Broken after 2 years - What factory part failed on the Schwinn Boundary and why it’s a good thing?

[@glennpettersson9002]

All the power runs through there and without a sealed unit they're prone to getting washed out and contaminated. Wheel hub bearings are the same and the difference a clean and lube has on the feel of a bike is amazing. Great video 👍

[@hu5116]

I have exactly the same problem, same bike! Thanks for this video!

[@Parker-di7ef]

Uhg, even with the things that broke, I miss my stolen Boundary. Only had it for a month and right after doing my first set of upgrades (pedals and hydraulic brakes) it was taken. It served its purpose and totally got into hooked on biking though!

[@agmood]

Just started to investigate a similar problem on my Boundary, purchased shortly after you first showcased the bike on your channel! Glad you still have some Boundary content and would definitely like to see some more. Mine is starting to show its age a bit so this spring is upgrade season.

[@williamemilceleiro9857]

Almost identical to the bb on my '94 Motiv. FYI I ditched the cages and used loose bearings, eleven bearings to be exact. The cages hold nine QUARTER INCH BEARINGS. The difference is astounding! Less friction and more support is really noticeable. Thanks for the great videos btw. Cheers!

[@Mikidy303]

This happened to my boundary as well. During the replacement I took this opportunity to replace the crank with a 34T. I had to cut off the crankset with a grinder. No real mountain biking but several thousand miles on some gravel paths, but mostly on paved surfaces.

[@joeyhebert9881]

So true. The bottom bracket on my new eboundary is clunking loudly after less than 10 miles. Excellent customer service from walmart, no issues with return.

[@s0steezy]

Hey Kev, huge fan of your videos and they've helped me a lot with my first mtb a used boundary! Could you do a video on bike maintenance on the boundary? Maybe just what all would be done for tuneups, how you clean the hard to reach spots and which are important to clean or lube etc. Specifically I'm trying to find videos on removing the rear wheel and cleaning inbetween all of the gears, hub, etc. I ride in a lot of dirt and dust and have started hearing a weird noise back there since my last ride! I got the wheel off and sprayed things down but have seen others actually remove each cog one by one. Thanks again!

[@colorblindbasshead913]

Bought a Schwinn axum 29" in 23' and rode it for that year, taking it easy as I was only getting familiar with the bike. Last year I began to build confidence and pushed it a bit more. Not much longer and I began hearing this sound. I know it's a budget bike but come on, it's the bottom bracket we're talking here.. besides the frame, that's the heart of the bike. Who wants to spend $400 to turn around and have their BB go out?

[@garycallahan7867]

Great Video! The BB on my Al Comp lasted about 50 miles. I went the IFX route.

[@pratyushjayachandran]

I knew the problem the moment I looked at the thumbnail which was confirmed later by listening to the audio. This is not a one off problem. So, I have a Schwinn Ranger and so do 2 of my friends. All of their bottom brackets have metal shavings inside. Mine was so bad that the cups got scored so I had to replace everything. My assumption is that these are metal shavings left from manufacturing, presumably from the bottle holder holes, that gradually find their way into the bottom bracket housing and mess the bearing and the surfaces. The parts are otherwise fine.

[@KevCentral]

Thanks for sharing

[@justafanmarvel9669]

I came onto this channel long enough ago to be here when the boundary was new... I'm glad to see it back and hope it's a regular again. I know there are so many bikes out there and people are jumping in at all points so content has to constantly modern but it's nice to see some of the "legacy" bikes getting love here lol

[@JasonLewis-ov1yr]

I started with a xrpro and now have a boundary. This channel is awesome

[@justafanmarvel9669]

@@JasonLewis-ov1yr I agree.. but it can hurt your wallet lol

[@KevCentral]

😈

[@JasonLewis-ov1yr]

@@KevCentral any advice on a new chain for the boundary? I broke the factory one yesterday.

[@thetoolmat8632]

Yeah i just picked one up for little rides, but now seeing these videos it looks like a new upgrade hobby! - anyone seeing this - if you have more info on boundary upgrades, please let me know…thanks

[@dean15221]

I am in process of rebuilding an older Schwinn Ascension and guess what it needed first, the new one works fine... I like the idea of going from trash pile to riding .

[@jacklo325]

Glad you're using the old mighty impact wrench! My ledge x2 had the same issue like your boundary. Brand new, out the box, bb would skip rotations, and metal shavings on the cone...

[@АшотГогавич]

*Works great, comfortable too*

[@norms3913]

I done away that bottom bracket and switched it out with a cartridge unit with a correct spindle length that works with my crankset

[@danielbao7515]

8:50- what you came here for, your welcome

[@luigiprovencher]

Blah! Blah! Blah! Blah! Blah! Blah! Blah!

[@blakekuhlmann2143]

i saw an ozone of some variety come in with BB issues, we tried absolutley everything but the threaded BB came crossthreaded from the factory and rusted tighter, just like that the whole bike was totaled.

[@zacherydrzik7122]

Can we get a updated upgraded parts list? Most from the original video are unavailable. Just picked up a boundary and taking it out soon for my first mountain biking trip. I can already tell the factory forks need attention. Never upgraded a bike before

[@lamonttucker2842]

Good evening thank you so much would it be best to just go ahead and grease bottom bracket some big box bikes ready to ride

[@KevCentral]

Preventative maintenance can make a big difference

[@MichaelOnines]

My bottom bracket was shipped practically dry and poorly adjusted. Really glad I spent the time to adjust all the bearings (front wheel, rear wheel, head, bottom bracket) and check on the lubrication before riding.

[@tomrodgers6629]

I guess I will be doing that bottom bracket upgrade a lot sooner then I expected. I have had the bike a little over two months problem free but today my bottom bracket seized for a minute. I am going to repack it. I hope the bearing cages are still intact. but I am still up grading it. I have destroyed a bottom bracket shell pushing a bad bracket to long.

[@nc3826]

The races on the spindle still looked good... So replacing just the bearings would have been an option.... And replacing the cage bearings with loose bearings will give you a greater surface area and a smoother rotation...

[@erkanKocaemin]

So lucky you nothing broken or dead .Just damaged bottom brakets(Lagers) that can be changed :D

[@tyskull4396]

My staffs frame is oval shaped on one side since I got it but my crank is fused to the spindle so I cant get the bearings out to fix it or see if I can get a warranty

[@ChicoBlanca6977]

As I've mentioned before, I had my Al comp about 2 weeks when my bottom bracket went. Yeah it was no fun considering I had to walk the rest of the way home from work but it was only a few blocks however the inconvenience factor was very much present because I have a very labor intensive job and add the stress at the end of a 10-hour day who the hell wants to walk their bike home after it done broke? Now I got to worry about diagnosing the problem, ordering the necessary parts and / or tools, and finally fixing it, and in the meantime find an alternate means of transportation to your job. All in all roughly two weeks until I was mobile again. As I've seen in other comments, I agree that the sealed cartridge way was a much better option than the more primitive ball and cone. One of the problems that this is such a common occurrence with the majority of us here and many more not participating with us cool kids is the fact that virtually everything we own and use nowadays is made in the PRC, and I'm sure we can agree the quality of these products for the most part, is sub-par at best. That old saying, "they don't make them like they used to" stands tall as ever these days. Yay to the puppet masters for outsourcing essentially everything we once were able to depend on and not have to think about when a particular product was going to fail or break much more prematurely than we were once used to. Not trying to get all political n what not here, but the nonsense has been affecting me and everyone else reading this and no one over there is doing anything about it while the rest of the world laughs at us while we give them our money, resources, and above all, jobs that once upon a time, quality was priority. I miss the old days. U see a lot of vintage bikes from the '80s and '90s being restored and they're still solid as they were the day they came out the factory. 20 or 30 years from now we won't be able to say the same thing, or at least our kids are grandkids won't.

[@TrinityWilderness1]

Well Chico Blanca, you’re correct about the Chinese quality issue. Absolutely TERRIBLE quality for the most part, 99% of the time. However, this is not an issue of “puppet masters”, it is more an issue of CEOs, Board of Directors, and stockholders than demand higher profits at any cost. Just basic American economics at work, I’m afraid. Our entire financial system is based on profit at any cost - Capitalism is a “buy low, sell high” system. It may create angry feelings and disappointment, but it’s what we’re stuck with until we (as a nation) say, “enough is enough, QUALITY before profits!” And, sadly, that is extremely unlikely…

[@simple_oversight]

Same. Literally didn’t get 50 miles of riding out of it. Replaced with a decent aftermarket set and haven’t had an issue in the 2 years since.

[@imkristhatguythatwatchesuo9366]

Same thing ended up happening with my Boundary. The play in the bottom bracket caused the chain to slip when pedaling which ended up sending me straight into the bars and then the ER.

[@DanLeeAdventures]

I just replaced the bottom bracket on my Schwinn mountain bike I hope I didn't put the spindle on backwards but it went back together pretty easily

[@oklahotb3217]

Really good info Kev. One thing you didn't mention is if you were going to just replace the cage bearings and reuse the spindle and cups, you will want to inspect both the chips and spindle where the bearings ride for scoring or other damage. When I replaced the bottom bracket on my Axum, there was a lot of dirt that made it's way inside the frame and into the bearings. I would have needed to replace my spindle as well if I was planning on sticking with the cage bearing set up.

[@durtyt4770]

Can't blame the part. Unless it was serviced regularly.

[@KevCentral]

I’m happy with 2 years of abuse. It wasn’t touched out of the box

[@blakekuhlmann2143]

you havent seen inside many BB shells, have you?

[@hagi1367]

What size bottom bracket does the Boundary tale? Do you recommend one in particular?

[@zebulundocallas]

That bottom bracket can last if it was serviced regularly. The maximum lifetime of ordinary bb grease is 3 months, the maximum lifetime of shimano bb grease is 6 months. It does not matter if it is ball bearings or sealed bearings. It does not matter if the brand is Suntour or Sram. If it is not being serviced, it will rub out due to friction and eventually rust due to moisture getting in the gaps.

[@terem1677]

Mine started knocking after 2 hours on the first ride, I ignored it for about a week or two before I decided to open it up and to my surprise, there was hardly any grease, lots of metal shavings, and almost all of the metal ball bearings were deformed. Got the bb replaced then I decided to take a look at the headset bearings to see if there was any grease and just like the bottom bracket, little to no grease at all. Got all of the bearings greased up and 6 months later the bike is still going strong.

[@weshobbs1964]

So what size bottom bracket??!

[@badbattleaxe5832]

What derailer did you get for this bike? my stock one broke. I need to get a new one ASAP.

[@jamessf426]

love your channel's focus on budget big box bikes for the rest of us. But where's the love for gravel bikes? They're more popular than ever now, but the industry is cashing in on the trend and inflating prices like crazy. Would love if you could check out bikes like the mongoose elroy/grit from walmart, which is pretty much the only sub $500 gravel bike out right now. There's not alot on youtube about it, and I'd love to hear your take!

[@jasonmcelroy4617]

What is the “specialty tool” that you used?

[@michaelbrinks8089]

I always use marine grease that is much more water resistant for my truck,motorcycle & bicycles. It's used for things like wheel bearings on boat trailers that get dunked under water often. I dunno much about grease but know there are several types made for several different applications, like high temp or very cold environments & cheap grease washes away easier. Recently found a package of engine coupler spline grease (didn't know they get their own special grease) it's very thick & sticky so it doesn't sling off the spline at very high RPMs. I assume it's also water proof for things like boat engine shaft splines. The bike factories in China probably use the cheapest/low quality grease possible. If the crank bearings had marine grease new from factory. They'd most likely still be fine with no rust.

[@Overland_eXploits_Oklahoma]

Great videos. I now have Boundary an Al Comp. Question. Is the chain ring changeable on the Boundary? Mine is bent (not flat) . I might be able to flatten it out? Thanks.

[@KevCentral]

Hello. The factory crankset doesn’t have a replaceable chainring. Did it get damaged in a crash?

[@Overland_eXploits_Oklahoma]

@@KevCentral Yeah small one, just pushed 1/4 of it out. Was thinking I might be able to flatten out. Already ordered the IXF set. Was wanting to fix and install on the AL Comp

[@Overland_eXploits_Oklahoma]

@@KevCentral a slight hit on a log. I did the ixf crankset. Great recommendation! Question, Why a plug on 1 side and not the other? Any recommendation for a bash guard? (crank mounted or slide type) or not worth it? I am a novice but have some obstacles at the local MTB trails and want to make sure I don't damage this , although its a cheap and easy fix. Sorry for so many questions. I just started riding after not riding for 25 years. Got a modified Al Comp and Boundary. Got both used for cheap. Keep kicking out the great content.

[@megaman3851]

You can feel a worn/loose B.B by grabbing both crack arms and try to see if you can move it from side to side. If there is play there is something wrong with the B.B

[@KevCentral]

I’ve had bearing failures before that wouldn’t let it rock, but we’re gritty and clunky

[@webmenacee]

Yooo thank you for this video kev! I needed the knowledge you just gave me. Now I can go back to that bike shop that sold me a 💩 refurbished bike!

[@luigiprovencher]

If you still have your BCA SC29 you might want to do this ASAP to it and if you do then good luck trying to get the fixed cup off of the driver's side. They don't grease them and if they do then it's definitely not enough and they torque them down too much because I've been trying to get mine off for over a week now and I can't get it to budge. Even with all of the tricks that I've seen on KZbin it won't move.

[@mdgeist472]

I had 2 guesses...wheel hubs or bottom bracket. Normally these are too tight from the factory, so I always adjust how tight they are. Also the bottom bracket sometimes has metal shavings from the frame, so I clean those out and regrease the bearings.

[@tomrodgers6629]

One more question Kev, I know you just changed out the wheel set on your boundary. But can you tell me what free wheel tool I need for the original wheels? Again thank you in advance.

[@KevCentral]

Are you asking about the freewheel remover?

[@tomrodgers6629]

@@KevCentral Yes, thank you for your quick response. Yeah, the pro rush freewheel gave up the ghost.

[@Nyc.__.luis06]

Hey does anyone know what size bottom bracket is on that bike ?

[@kennnethbrown7582]

I still have my SCHWINN BOUNDARY I had a flat tire I fixed that but before I had the flat tire I've been here and clunking noise in the bottom bracket I believe it's the bottom bracket it only happens when I pedal forward and when I'm in a low gear

[@davidcrowson4745]

I want to see the IXF conversion

[@JDavid-gx8rs]

would this one work? BUCKLOS IXF 104 BCD 30-52T Mountain Bike Crankset -Hollow Integrated MTB 170mm Crank Set- Aluminum Alloy Bike Crankset with Narrow Wide Tooth Chainring Bottom Bracket Bolts (Black/Red) ???

[@JTsCustom]

The bb on my axum DP failed very early on. It probably wasn't right from the beginning though, wasn't smooth out of the box but wasn't going to mess with it since 98% of users wouldn't know it anyways.

[@goldeneaglealexander6884]

I’ve only had mine 5 days or less no hard rides just flat ground and this is already happened I hear a bang bang bang and feel a thump thump thump in the pedal every time I make a revolution around on my pedaling 🙁just bought new pedal s and tools to tighten and put them on I hope it fixes the problem my luck it’s the crank ugh 😩

[@zerogravity4408]

This happened to my mongoose ardor but when I opened it up the bering cage completely blew up the bearings were just rolling around down there the cage was absolutely mangled on both sides so I converted it to IXF after a 2 hour long fight to get it off of course though because apparently my tools arnt good enough anymore

[@childerstodd]

My son has a boundary, the freewheel on the first one staring making noise so we returned it to Walmart. Last weekend we were riding and the freewheel stripped out on the second one.

[@KevCentral]

Ouch

[@childerstodd]

@@KevCentral what’s a good replacement for it?

[@childerstodd]

Freewheel that is

[@tattonoboyle9241]

After watching your Project Boundary I went out and got my own Boundary. I have loved it every moment. And I had the same problem my self. My local bike shop replaced the bearings for me. But now I may be having the same problem. What part are you using on yours? I want to know so I can posable use it on mine!

[@KevCentral]

I’m replacing the entire crankset assembly with a lighter unit that includes an external bearing bottom bracket. It’s called the iXF crankset. You can find the ones I use via the ‘Bike Parts’ listing on my website

[@tattonoboyle9241]

@@KevCentral Thanks! I will definitely have to order that first chance I get.

[@CaliforniaFishing]

You can also just buy a Shimano un300 for $20-$25 on Amazon and be done. I replaced mine with one and no more worries, and part is so affordable, I would not go back to caged or loose bearings, ever.

[@tattonoboyle9241]

@@CaliforniaFishing Thanks for the suggestion. But I already ordered an iXF crankset. Plus I like that I can out a green gear on it! 😉

[@Adamsday]

Thanks for this one.

[@warthundershorts6649]

Hey did you know that hyper has a full sus ebike with a mid drive and a front thru axle

[@dreamweaver5869]

The Shimano BBUN300 BC137 73 LL123 Bottom Bracket is a direct swap out for 17.99 on Amazon. It has Sealed bearings and was a dirt cheap upgrade for my Axum.

[@CaliforniaFishing]

That's what I did. I forgot the model number. I am surprised that in the 21st century bikes are still coming out with the old spindle and ball bearings/caged bearings. I understand it works, but that part is $18 on amazon, so even cheaper for a company to purchase.

[@rashb3994]

Will this work on the Boundary too?

[@Jimminizm]

Thank you

[@slambergang]

Do you remember the measurements on the spindle? There's 3 different options you can pick from

[@tomrodgers6629]

Kev, what bottom bracket tool was that? Thank you in advance.

[@KevCentral]

The blue one or the wrench style?

[@tomrodgers6629]

@@KevCentral the silver one you pulled the bottom bracket with.

[@tomrodgers6629]

It is a silver bottom bracket socket. I believe it is a 3/8 drive.

[@KevCentral]

Ah. The one on the impact driver. That was part of a bottom bracket removal kit I purchased from Amazon. I have a link to it on my websites ‘shop’ link the bike parts

[@tomrodgers6629]

@@KevCentral thank you.

[@cogiccowboy3168]

Can someone please confirm the BB specs and any replacement specs suggestions ?

[@cogiccowboy3168]

I pulled mine. It seems to be 73 x 127.

[@4et_Chango]

what size is the bottom bracket

[@kv7005]

I the two years that you had ridden this bike did you ever grease and adjust bottom bracket?

[@KevCentral]

Nope. This bb was left as it came from the factory

[@rubenvasquez9686]

I had the same issue and replaced it with an IXF crankset 💪🏽👍🏽

[@KevCentral]

Congrats! You’ve been randomly chosen for a free KevCentral sticker. Head over to KevCentral.com and click on the ‘chat’ icon in the bottom right corner to contact me and have your sticker sent to you. 👍🏼

[@ThatNinja1]

I have a schwinn Bellwood hybrid and my the bb was the second factory part that broke on me. The first was my freewheel hub.

[@KevCentral]

Thanks for sharing

[@chrisbarker270]

I know this comment has nothing to do with the Boundary but do you know the headset size of the non tapered Al Comp? Schwinn should put better BB in there bikes. I replaced my BB on my Comp and was much better. Thanks.

[@timteffeteller1889]

What's the best bottom bracket to use on the boundary if going with an ifx crank? I've read the one supplied with the crankeset is junk.

[@KevCentral]

They hold up decently well. Shimano is the best without going to an exotic brand

[@timteffeteller1889]

@@KevCentral do you know a part number for the shimano?

[@timteffeteller1889]

BTW not the square version. Not even sure if the ifx has the square taper version available

[@TheSpaceBrosShow]

@@timteffeteller1889 Best? Sky is the limit. White Industries, Wheels MFG, Hope, Hambini. Really any 24mm axle bb will work, just pick one that you're willing to spend on

[@richardcarr6493]

l just replaced with a shimano sealed one piece square taper unit and its been great

[@FrankLadd]

How can you tell what parts or style of bottom bracket is compatible with yout frame?

[@KevCentral]

The type of bottom bracket dictates what works on it. Most bikes seen on this channel are conventional bsa

[@Mike22313]

Kev, why do you counting bike life by riders and years, not kilometers (miles) and hours? You not strip paint from pedal bolts yet. Tire look like new same as chainring. Do you really use it or just give youre frands few time to ride, and store it in garage?

[@FedoraQuilava87Music]

The Bottom bracket on my Al Comp crapped itself out in 50 miles, it wasn't properly lubricated from the factory so the bearings are pretty beat up. It works, but its noisy

[@KevCentral]

Thanks for sharing

[@singletona082]

I take it you are going to make a video on how to install an IXF?

[@KevCentral]

Haven’t I made one of those before?

[@singletona082]

@@KevCentral For the action crankset that slides over square taper on your 1x video. You had mentioned the ixf crankset but didn't show how it was installed.

[@TivonSanders]

Bottom bracket. I should've known. I can't believe I guessed the chain. lol smh My S29 is about 2 years old now with it's stock bottom bracket, and hasn't failed yet. This video gives me fair warning though.

[@eugene44569]

what crankset are you going to use now on the bondry?

[@KevCentral]

Mentioned in video 🙃

[@jonathandeleon2417]

I have always loved riding bikes and always have had a interest in MTB since I was a teenager, watching drop in on HBO. Now as an adult I really want to try it but don’t know what bike to get. I have always dreamed of having a pro-ish bike since I used to watch these pros as a teenager and started watching berm peak in college. I just can’t afford a $1500+ bike right now but still want to get into it. I have learned about the schwinn AXUM and Boundary from your channel and I am interested in them. I really just want a good advice on if I should spend $350 on the boundary or $500 hundred on the AXUM or if I should save my money and buy a Diamondback beginner hard tail. I really do think the Schwinn bikes can survive me well since it will be some time before I can really hit diamond trails and jumps. Is the Schwinn Boundary really a good bike and will it serve me well for a few years? I really like this bike for the low price.

[@KevCentral]

Hello. My advise is to buy the best you can afford to buy

[@slimey831]

I bought mine and when I stand up to power pedal it makes that exact noise

[@KevCentral]

Start running through the 3 failure points I mentioned. It will be one of the 3.

[@reeceholmes8546]

I guessed right, thanks KevCentral

[@KevCentral]

Congrats! You’ve been randomly chosen for a free KevCentral sticker. Head over to KevCentral.com and click on the ‘chat’ icon in the bottom right corner to contact me and have your sticker sent to you. 👍🏼

[@Wile-E-Coyote_Super_Genius]

Great video...Electric Impacts are worth every penny.

[@aaronbehindbars]

I'm surprised a low-end, unsealed, and likely underlubricated BB went that long. If the spindle and cups weren't pitted, I'd clean it up and pop some new uncaged balls in with a high quality waterproof grease (Phil Wood is good stuff). I just rebuilt a 40 year old Sugino BB (and I kept the caged bearings) and that baby spins and spins. Maybe I'll throw that video short up on my channel.

[@KevCentral]

Often they are underlubricated, but not all come from the factory lacking lubrication. I’m suspecting, based on how long this has lasted, that this one was initially somewhat ok.

[@aaronbehindbars]

@@KevCentral Still not bad for such a budget part. I've had nearly new cartridge bearing units fail. I'd say nothing beats an old Shimano BB-UN72 (Deore XT). As long as you don't store them at the bottom of a swamp, they last forever.

[@audiogarden21]

I take it that bottom bracket has a 20 tooth spline. Important to know for those lookin' for tools.

[@arichardofalltrades6770]

In my experience, replacing the BB shaft and bearings to a cartridge style bottom bracket is a significant improvement, and very well worth the $10 the cartridge costs.

[@EricDalnas]

Cheapest way to shed weight.

[@MichaelOnines]

Do you have a brand and model # recommendation? I just replaced my caged bearings with loose because I was having a similar clunk. It seems fine now, but next time I service the BB a swap sounds like a good idea.

[@arichardofalltrades6770]

@@MichaelOnines The biggest thing is the width of the shell on the frame. Probably 68mm. but you should measure it. Some will have the pedals slightly out more, but less than 1/4", so you probably won't notice - I never did. Can't go wrong with Shimano, but I think just about any brand is fine. Just do a search on "square taper bottom bracket" and you will see a bunch. You will definitely feel the difference, especially on a longer ride.

[@arichardofalltrades6770]

BTW, check out some of my cool bike projects!

[@markweaver1012]

I've worn the cartridge-style ones out too. I'm about 200# and like to climb hills by standing on the pedals, so there's probably a limited expected lifespan. But it's not a complicated or expensive fix. And I've never had a problem getting the crank off with my puller.

[@isahacks]

is the only part that my project boundary has broken..... and it has been broken for like about a year... i just ride it like that because is just a light trail use bike... I will eventually replace but not in the works because the frame of the bike is too big so it gets less and less riding over time.

[@tylerdavidw]

This happened to my boundary after about 2 months of street riding. Otherwise it’s been a great bike

[@DFX2KX]

Oh wow, I think I might have been one of the folks who guessed right, purely from being mad at the swhinn's bottom bracket from the removal process, lol. (edit, LOL you even mentioned how they're almost air-wrenched together. Beat me to it. breaker bar is your friend. mine was also very poorly welded. also, I had a strange feeling in my pedal that turned out to be my pedal hitting the speed sensor/light power wire splitter. helpful to check things like that if you've got such a setup)

[@KevCentral]

Speed sensor? Which bike are you on?

[@DFX2KX]

@@KevCentral Schwinn Aluminum Comp! But with a TSDZ2 Mid-Drive kit installed (hence what was supposed to say 'almost welded' in regards to the BB above, motor replaced it). The sensor came with the kit. The cable's pretty long, and the loop of excess started bumping the left crank. better that than the OTHER things that make that noise/feeling on a mid-drive though. bit of tape got it out of the way. I mentioned it because folks sometimes have rear wheel speed/cadence sensors that might hit the pedal if they shift around on a bump. As an aside, Kev... Know what sort of Brakepads these Schwinn's actually *take?* (on the other hand, it might be prudent to upgrade them considering....)

[@danbob1650]

2019 al comp $40 bucks works .... Should I throw $400 or so in it...

[@CaliforniaFishing]

It it works for you, ride it until something breaks and replace. Unless you need extra gearing to climb, lighter wheels for the same reason, or stronger brakes for DH, then just keep it as is.

[@eugene44569]

suprised that cup and cone bb lasted 2 years but I know u don't ride it regularly

[@KevCentral]

It’s been ridden quite a bit - as mentioned in the video

[@Elena14204]

Thats exactly whats happened to my al comp.

[@dogit1840]

Well it was an honor to be chosen by you for a free sticker but I don't see anywhere on KZbin to contact you for mailing address no big deal it's the thought that counts with a gaff not the actual gift right

[@KevCentral]

Head to KevCentral.com and click the chat icon in the bottom right hand corner. You can contact me there

[@halholland1637]

My new Schwinn sounds like that. It has one mile on it.

[@bazil4146]

It looks like this bike hasn’t been washed in quite long time

[@KevCentral]

It has been loaned out and not in my possession a lot, so no - it doesn’t get cleaned regularly like most of my bikes

[@nofxaddict6798]

Wow weird seeing a even lower end schwinn without a sealed bb cartridge.great vid Kev 👍.....last bike i bought was a Ghost Kato 5 .

[@amercyreceived]

Same thing happened to my Schwinn. Sad.

[@KevCentral]

Considering I never touched the crankset aside from bolting on new pedals I’m impressed with the 2 years of rough treatment

[@MattExzy]

Interesting set up on that BB. I remember my first big box bike, it had those cup-and-cone style bearings, but with a terrible 'lock ring' on the ring side that just wouldn't come off - my grand master plan was to put a sealed BB in - however, not being able to get that off, I had to stick with cage bearings. This is interesting in that it has a sealed bearing 'look' to it from the outside with those teeth-like indentations. It's a shame they didn't go with a sealed one to begin with, but wow, looks much easier to service.

[@derekneumann]

A good explanation for non-bike-mechanic types. Well done. Did I tell you that I got some Fooker pedals for my girls on their new 27.5' Specialized Rockhopper Sports? Semi-good weather in my area this weekend finally, so first ride on new rides for my daughters. :)

[@aircraftmech123456]

Meanwhile, none of us have seen any of these come through our Walmarts!

[@NjAnderson118]

It’s always the dang bb!

[@obxarms7685]

A new BB and crankset should have been the very first upgrade.

[@Randy-ry9ss]

I spray a little WD 40 on it every few weeks and the clunking noise stops.

[@Graeleaf]

I just reach for my go to Sram DUB bottom bracket and NX crank arm set. Never have to worry again. I put them on my Mongoose Ledge X2, and several other bikes that I built. Usually around $135.00 for the set, when you can get them.

[@marianoalonzo8911]

The worst possible bottom bracket for those bikes, especially if they get left outside. I cant tell you how many big box store bikes come in with this issue.

[@tarstarkusz]

2 years seems rather excessively short for all the damage.

[@DFX2KX]

The parts on these big box bikes aren't built to be ridden all that hard, this bike got handed around and had the crap beaten out of it. All while never getting greased. it's kinda like my Al Comp's rear hub. It is absolutely toast and I know it, both hubs need to be replaced because they where never made with my Comp's Mid-drive conversion in mind either.

[@tarstarkusz]

@@DFX2KX The problem is they often come ungreased. Without grease, they won't last. Also, they need to be properly set too.

[@betterthannotgoodmtb]

The video was at 999 views when I clicked on it! Woohoo!

[@kibbee890]

Surprised they don't used sealed bearings for the bottom bracket. They last longer and require less maintenance. Guess big box bikes try to cut costs wherever possible. Nobody shopping for a big box bike is going to question what kind of bottom bracket it has.

[@chadlafrennie4065]

I wore out the BB on my big box bike in a matter of weeks due to dirt and water being slung off the back tire into the exposed part of the slot on the seat post.

[@janeblogs324]

Wow, did they copy Eastern bmx and put a water slot above the bottom bracket?