How to Install Motorized Bike Rear Sprocket Assembly on 26" Wheel

[@dustinh4175]

I literally got so frusrated trying to get a sporcket on strait without warping in the process that I numbered every bolt in a cross pattern like a cylinder head and made 1 turn and then switched to the next bolt. It took forever but worked great.

[@charleneblack2792]

That's a great idea! Thank you!

[@terranceturnbow8184]

Bro use zip ties place them around the hub between the sprocket to get a perfect alignment than when tightened pull them out

[@sulaimanashraf1823]

​@@terranceturnbow8184Elaborate

[@Jazzy_Reacts]

I put one of these together and this is by far the most difficult part. I tried finding a pre assembled one but no luck

[@MsAhlexusP]

You can put a shallow 1 and 1/16 1/2 socket. Put in the center or the sproket and depending on your axle. Most you can put the nut back on. And it will hold the sproket center. The entire time, and you wont have to adjust the sproket back in forth to get it centered out.

[@rexterrocks]

Most kits now only come with one set of plates, usually one with 5 holes and one with 4. There isn't any need for the extra plates although I changed my sprocket recently and had spare plates and thought I would try 2 sets and it did seem easier to set up. One mistake he made that you should avoid is make sure the cut in the ring is UNDER a plate and not between them. A good way to tighten the bolts evenly is to use a ruler or piece of card and mark how much thread is showing through on it and do them all the same. The 10mm nuts are very easy to strip if you overtighten them.

[@timothyaldrich4127]

My bike came with only 2 plates and unlocks what a pain been trying last 2 days on and off hopefully I'll get it this is a 2 man job definitely

[@rexterrocks]

@@timothyaldrich4127 I'm just fitting a new sprocket myself. It is hard to line up. I fit the plates, rubber and sprockets on as near as I can get, but not too tight, then, with my bike upside down I remove the front wheel and put the rear one in its place. I can then spin it and see where to adjust. It makes it a lot easier.

[@dustinh4175]

I replaced the factory sprocket bolts with allen bolts from an old motor and make sure to use a flat washer on the outside of the sprocket and then on the inside I use a flat washer then a lock washer then a regular nut but longer with more threads then double nutted to a nylock nut and it holds good and looks cool too.

[@charleneblack2792]

Getting this sprocket straight is nearly impossible. I've been fighting with it for hours. I've never done anything like this, so that makes it harder. Good luck, everyone!

[@brandonkellogg9590]

If the coaster brakes doesn't clear the bolts, switch to button head bolts. They are much lower profile.

[@MeiGunner]

You can also face the sprocket in or out to make sure the chain stays straight with the motor

[@DavidWilliams-dz7zd]

Would you guys be able to install a sprock on a rim and then sell it to us if so I want to buy one that has one already installed

[@Killasandwick]

As soon as he said don't accidentally completely disassemble the entire axel is where it's went wrong. Goddam!

[@ambroseabellair5306]

Your putting the plates in the back of the sprocket and behind the spokes but you didn't mention that. You made it sound as if there were just plates on the inside of the wheel hub, but unless I'm seeing things you have another set of plates between the sprocket and the outside of the wheel against the spoke. Is that for pushing the sprocket out further for clearance or do you need it for securing the sprocket to the spokes. Never saw that before, wondering why, just saying it cause's a little confusion when you do something but don't actually mention it, just a little slight of hand hey partner.

[@413MassDigger]

i said the same thing,, never seen plates behind the sprocket like that before

[@audieallen9734]

my kit came with a butt load of extra lock washers and regular washers, and I can't tell how many I should use? should I put a lock washer and regular washer on both sides, if I have enough?

[@alangoodrich6590]

Same

[@MeiGunner]

You only need 3 brackets not 6 if you took the ones off the back of the sprocket and threw away those 3 extra you'd be able to fit the coaster brake back on

[@dustinh4175]

I feel like the 3 bolt plates are better, they dont bend as easily. Better steel or something but thats just my personal experience.

[@jerrydahms2084]

if your having a problem getting the sprocket straight use some zip ties between the dust cover and the sprocket.. might have to trim down the dust cover if your not wanting to use zip ties. any other ideas would be helpful. Just a few I've done so far as a newbie.

[@bobjohnson9597]

when showing initial set up you show the outer edge of sprocket closer to inside of wheel however when you actually mounted the sprocket the outer toothed edge is away from the center of the sprocket which changes the alignment of the chain in referrence to the front engine sprocket. Which side of the sprocket should face out?

[@charleneblack2792]

I'm curious, also. I think I'm going to flip mine around, so the teeth are closer to the wheel.

[@SteveMayle]

What's wrong when after installing the sprocket and the opposite spoket for the bicycle chain no longer moves freely without spinning the coaster break?

[@hirockn]

Please tell me the size of the chain on the engine side.

[@kxlucifer]

just get the hub adapter assembly theyre better thicker material and doesnt require bending the coaster brake arm since the bolt sit flush..source i have 2 motorize bikes both have them.

[@abumannocchi8048]

K Lucifer I have a ten speed the motor 80 chain hits the bike frame ,what should I do? And if anyone knows where to get replacement engine mount bolts let me know.

[@martinj9647]

Probably because there is pretty much an endless variety of hub diameters while there is only maybe 3 different sized hub adapters, so unless you do some wonky business with shims, or have your own mill they won't fit many wheels, and buying a new wheelset and $30 adapter to save 15 minutes isn't feasible for most people that are building a motorized bike as an inexpensive alternate mode of transportation

[@dexlofi]

My problem currently is that my rear coaster hub is too wide in diameter to even fit the sprocket.

[@josh7637]

Tightened the bolts down pretty meticulously with even pressure. Center of the sprocket is center with the hub beautifully. Wheel is back on the bike and turning the pedals by hand, I notice the rear sprocket has tons of wobble as it goes around. Should I go around and snug bolts accordingly again? It's bad enough that it will need to be corrected. Just didn't know if there were any tricks I should know about.

[@dominicmancini8330]

Put something ther to keep it centered. Hope helped

[@naumansm3]

How much should the bolts be tightened ? For me, the tire seems to be have gotten a 'wobble' after I tightened the bolts

[@malleusmaleficarum6004]

You likely did over tightened some of the bolts, but the main problem is that you tightened them unevenly and put more pressure on certain spokes pulling the rim out of alignment

[@Mac181]

My set only came with 3 pieces think that’s going to matter ??

[@D347H2]

I need to know how you get the sprocket to stay straight. no matter what Ive tried, my sprocket seems to go off of alignment even just the slightest and it does cause a HUGE problem with the chain going too tight and then loose because of the bobbing of the sprocket. I've tried so many times to keep it aligned and it just goes off the slightest.

[@D347H2]

My solution to this was getting a hub mounted sprocket. I unfortunately stopped building motorbikes over a year ago. I was building them and selling them for decent money. But check out BBR Hub mounted sprockets or look them up on Amazon. make sure you use a digital caliper if you don't know how big your hub is on your rear wheel. Make sure you order the right size if you go this route. Believe me, i will NEVER use a spoke mounted sprocket ever again.

[@brsproductions6117]

Are you tightening the bolts properly? Does it become misaligned immediately, during the first ride, or after a few rides? U may need to install ride then retorque after 10 or so minutes of riding. Edit: you should be making sure all bolts are tight before each ride. The shaking from the motor will loosen bolts and screws due to vibrations.

[@joelstrickland8890]

@@D347H2 do you know if this kit will Work on a 3 wheel schwinn meridian?

[@D347H2]

@@joelstrickland8890 I really dont know as I've never built a 3 wheeler. I haven't built a bike in many years due to working a lot

[@joelstrickland8890]

@@D347H2 ok thank you for the reply, have a good weekend.

[@skilletfingerz7380]

What if the bolts don’t go through the spokes can you mount it somehow else with adhesive or some sort of other bolt can’t get another bike and tbis is the only option

[@jynkot5542]

thank you im in the process of building one just ran into a problem with bent rims that is throwing the sprocket off alignment

[@deborahwebb9012]

What if I put the spocket on back wards, do I really have to turn it around?

[@motoredbikemadness2061]

If your chain isn’t rubbing the frame and is aligned straight with the motor then it’s fine

[@ventus_luxis]

but how do i get the support loose from a brand new rim

[@austinshipley0]

THANK YOU SO MUCH EVERY OTHER VIDEO ON HOW TO PUT IT ALL TOGETHER SKIPS THIS PART LIKE ITS IMPORTANT!!!

[@jduboi5]

i just realized that my bike has 29in wheels, is it possible to install it on this size cause im running into problems!!

[@martinj9647]

Wheel size doesn't matter so much as spoke count and pattern. The holes in the sprocket are basically only made to fit a set number of spokes, any more than that and it's impossible to line up all 9 holes without bending spokes or changing the lacing pattern. Edit: the optimal seems to be 32-36 spokes for anything 24-29", though there's undoubtedly other combinations of wheel size, spoke count and lacing patterns that'd work. On my bike I have 29" 48 spoke wheels, so every 3rd hole is blocked, so it has 2 bolts, empty hole, 2 bolts, empty, etc.. If you need to do this just make sure none of the side by side bolts are in the same plate on the back(each middle hole of the plates should be empty), and the cut in the rubber piece is behind on of the plates, not where two meet. Of course it's ideal to have all 9 bolts in but I've had this bike going on a year and just removed the sprocket to change out the spoke nipples and there were no bends or other visible signs having the 3 bolts out was causing any issues

[@compunerd]

i bought the upgraded clamp that goes right on the hub..s o much better

[@darioontiveros4084]

What happens if you do accidentally disassemble the axle. Then what?

[@nathanael5606]

You will have to learn how a coaster brake works, and then put it back together with grease.

[@cobzoid1883]

reassemble it lol

[@cobzoid1883]

i didnt the same thing you just have to screw it back in with all the bearings in place

[@Eetu-vu6yc]

I have 26 wheel but it has 3 gears so the middle ìs bigger i cant fit the sprocket on any tips?

[@brsproductions6117]

How to set the pre load or whatever for the bearing

[@panzerwolf494]

Yeah, don't use these clamps, they fuck your spokes up just from the engine starts. Get yourself either one of the wheels with a hub drilled for a sprocket, or one of those clamps that bolts around the hub.

[@alexonwheels4190]

What should I do if my wheel only had 32 teeth but the sprocket has 9 holes?

[@lyntiecegalleher3110]

How to put together the rear axle together

[@jeremiahsanchez1094]

Why is this still posted if you no longer have them assembled like this? Or why not make an updated video?

[@robbiemclendon1047]

Mine only came w/the 2 backing plates..already been thru a set of bolts trying to get it together, won't tighten evenly...

[@Sophia-hs3rz]

Hi, like your videos. I see some using a flat sprocket & you're using a dish. What are the different applications?

[@dominicmancini8330]

Is it the spokes that holds the sprocket in place

[@pablodalisay7132]

Is there a sprocket for engine with free wheeling?

[@cooperk02134]

Question, does it matter what side of the sprocket is either inside or out? It looks like I can mount it with the teeth more on the inside, then if I flip it they will be a little more towards the outside….

[@coltonrooster]

As long as it's aligned doesn't matter

[@sompophuayrahan3891]

Can i just use the fixie gear it self...(the both fixie and single speed bike)

[@worscohli]

ummm i dont think mine has plates on both sides of the pads

[@0spike]

Hi great video, can you tell me what bike your using?

[@MaverickNelson3]

I do the same as this vid and I have problems while test riding it. I take the coster break off and install the sprocket and reinstall the coster break, but when I ride it wthout the motor chain on and use the coster break the rear hub untightens and makes my rim Loose. If anybody knows could they please tell me why it does that. It already broke 2 rims from it unloosening.

[@TheTechnology1998]

Does the new sprocket fit the bicycle's chain or is the sprocket to big? Plz respond back.

[@b1200guy]

No, the new sprocket fits the chain that comes with the kit, a 415 size motocross chain. You have to get these at a motorcycle store if you need to replace it.

[@jordonfoster5280]

What if I have rear disk brakes

[@bikeberry]

Most standard disk brakes will need to be uninstalled before the rear crank assembly can be installed. There are aftermarket extension brackets and larger diameter disk rotor which can make the use of disk brakes possible.

[@miguelhuertas7769]

Hi the sprocket teeth go to outside or inside thank you

[@truongameo8821]

Friend did ít good me looking and how made it same same you

[@mitchnolan7005]

Put tape on the bolts to hold them in place

[@underworldslums6313]

my motor sprocket has a slight wave in it causing the chain to keep slipping off of it. I've readjusted it a few times and switched out a new one and still has that wave in it. any tips?

[@taitheguy85]

Yes: remove sprocket, flip it over, reinstall. If that doesn't fix it, then ur chain tensioner is ur problem. I would recommend a sprocket chain tensioner (like 30 bucks on eBay).

[@curtisanderson3427]

if the two gromet pieces are in bad condition could this affect the centering of the sprocket?

[@wildbill23c]

Yes, it will throw off the center of the sprocket, as well as not tighten down properly and cause an off-balance issue...more so than normal.

[@tjdukes7452]

Can someone plz tell me wat i can do about my rear wheel ....the bearings just keep getting destroyed fast wat kind of bearings can i put in it to make it last ot where can i get a heavy duty rear wheel with heavy duty bearings

[@STT.40]

I read that you need to use heavy duty automobile grease in the hubs and bearings. The regular bike grease is not durable enough.

[@emeryseyller8029]

for some reason my bike kit did not come with the two other plates ( 4 hole and 5 hole ones) i tried installing it without them for HOURS... wheel doesn't spin right, crooked, all sorts of problems... what do i do now? i am extremely confused

[@soccermessi-dq2eo]

Hey I just received my kit today and it did not come with the other 2 plates either, what did you do?

[@mariesayegh664]

Same

[@theone2be33]

Call the manufacturer and get your missing parts or report them to the Better Business Bureau

[@psytastic2215]

I got those but I didn't get the sprocket I'm pretty pissed off

[@patherrada4876]

I have not purchased a engine kit yet I'm just doing some research be for I buy and I noticed that the video says to use a 26in wheel with 36 spokes and my bike has 52 spokes and is 29in wheel I was wondering if would run into any problems putting on the sprocket.

[@paramandans]

Don't use those, it will mess up your wheel. Get the after market sprocket adapter.

[@kxlucifer]

pat herrada itll be fine it just wear the clutch faster with bigger wheels

[@MeiGunner]

4:07 Oof that's sprocket is crooked you said Tightening and align the bolts evenly ... ( Get that wibb-al woBb-al out of there and you have less vibration on your rides out on the road)

[@MrGuidoeric]

I am not finding the video for grinding the sprocket teeth

[@tsvetomiriliev5804]

What about the rear disk break?

[@pablodalisay8811]

Is there a free wheeling on the sprocket for engine ?

[@Killasandwick]

You overtightened the coaster hub which is on the little sprocket side of wheel. It should be hand tight to free wheel.

[@fuelityourself]

Have the kits always s had the double washer plate set?

[@joshuawalker2573]

Mine only came with 1

[@devinpratt9542]

my coaster brake is really hard to get off. any suggestions or videos to remove it?

[@taitheguy85]

Two 4-way tire irons (or a torque wrench)

[@beancube2010]

Why don't we have some universal motorized front wheel bicycle kits that can just haul any regular bike without making change to the rear part of the bike?!!

[@abundantsound7775]

There is. Just google bumblebee motorized bicycle front wheel kit. Done.

[@aaronsteiding4568]

After hours and hours of trying to get the rear sprocket aligned (which it never did), save yourself the headache and get a sprocket adaptor. Trash the one that came with the kit.

[@husnainemd6322]

where to buy that I don't know can you tell me please in india

[@ethereine6058]

Look up 2 stroke engines for motorized bikes

[@themiddleman7322]

Super simple and clean 👌👌👌

[@CreativeM35]

When i try to remove the brake coster the whole thing comes of with it. not just the arm, how do i overcome this obstacle?

[@taitheguy85]

Some are tightened to the nut MUCH tighter than others. Took me a while to figure out also, but in the worst cases (like urs) u either need a toque wrench, or two 4-way tire irons. Use one tire iron on the nut, & the other on the coaster brake arm itself. Hold the brake arm down (or up) while turning the nut counter clockwise

[@BadAls19]

14 if you were to use the 14 gauge spokes are they going to snap or are the thicker ones just a recommendation

[@StilwellMotovlogger]

It's possible they will break, or your sprocket will get bent. In my opinion it's a necessity not a recommendation.

[@_ken6243]

do the motor schwinn meridian motofized mooried cmeaa listien soften.

[@wildbill23c]

Using heavier gauge spokes is just a gimmick to get you to buy their more expensive wheels. If you install the sprocket and adapter properly it will work just fine with 14 gauge spokes. The bigger problem is keeping the engine mounted on the bike. I've broke 2 motor mounting studs in less than a year. These engines need far heavier grade studs than the cheap ones they provide and sell as replacements. I'm going to find out what size they are and go get my own heavier duty ones.

[@bennyvazquez1213]

my bike has aluminium magna weels purchase in wallmart how do i install the sprocket on it can any one help me out

[@tmabjj1]

Would it still fit on 700c size wheel like on a road bike

[@theone2be33]

Maybe

[@Maku_100]

Thank you wery mutch.This was helpful and keep going in theese videos

[@johnfarnham2614]

What is the name of this or part number??

[@KN4YEM]

Thanks alot for this video I will be doing this soon.

[@integrationofmanandmachine4714]

How is it now

[@dronescheck3991]

I only have 3 metal plates

[@anthanyjohnson6380]

Do we need to take dust cover off

[@bikeberry]

Typically, it is necessary for proper clearance, but there are some wheel sets which can have adequate clearance with the dust cover on.

[@mariodiodato309]

Anthany Johnson scusa come va montata la corona

[@psytastic2215]

I never got the sprocket for my kit I bought is there a cheap way to get one??? All the ones I see are like $50

[@bikeberry]

If your kit came without a part give us a call and we will send it out to you. [phone]

[@clerissonmesquita]

Thank you so much for your invaluable information, highly appreciate it, keep it up the outstanding job, have a great day.

[@F14TOMCATFT]

Thank you very much this video did help me

[@BadAls19]

Where can you buy this part individually???

[@davidcoon3602]

Bikeberry.com

[@richards9865]

Very nicely done - thanks.

[@The13thGuest]

Will it fit on a high flange hub?

[@integrationofmanandmachine4714]

Parachute regiment

[@evoemperor3776]

how many tooth is the sprocket? what chain is used 415?

[@integrationofmanandmachine4714]

Yesh

[@Oldcoinsandstuff1]

If you have a mountain bike why can't you just use the sprockets that are already there instead of adding a new one on the left side? They make engines that turn CW with the crank on the right.

[@taitheguy85]

Cuz the drive chain is always on the left of the engine. & if u can't pedal the bike, then it's not technically a bicycle, & u would need license & registration on public roads... Well, if u get caught that is

[@anwezzyupt202]

you should do a video of how to change the tire.

[@mattmesi]

They gave me split washers But I don’t see any being used for this video So I won’t use them. I have the exact same bike

[@ericmccormac6102]

I watched this twice. What motor?

[@ericmccormac6102]

newb problem.. byoe haha :)

[@BobTheBuilder294]

every time i destroy a wheel i get a cheap used one for like 5 bucks and i mess up the sprocket installation. Looks like mine is 14 gauge and i'll be destroying it again, oops.

[@mikehasuga4959]

Well done

[@chucklehead3697]

you said to leave a comment if you left anything out

[@0Kizzy]

Im having issues with ths sprocket not fitting the rim it looks like i have to machine it out about 1/8th inch for it to work

[@maddenmadness]

what size is the sprocket

[@scaw-j]

Hi there, I am trying this installation but I have 29" wheels and the 9 holes don't line up with the spokes. Do you have any advice for me or am I completely screwed? Thanks.

[@TIMEtoRIDE900]

+Scaw drill baby drill !!

[@taitheguy85]

Just use a wheel with a different spoke pattern. Size doesn't matter, spoke count is the issue. P.s. don't "drill baby".

[@martinbyrne6643]

The sprocket u fitted is no running concentric ‘ u need to re do it ‘ sorry

[@ashribadbiswal6680]

How can bay online

[@bikeberry]

bikeberry.com

[@zoologicalmilitia2241]

why is my chain jaming forward my clutch is off the chain jams

[@stevenwatson8295]

A real headache 😣

[@sberg8474]

Nah, who need brakes!

[@cordariousriggins9708]

bro my bearing just fell out when i got off the bike do need to buy a new rim

[@stevenwatson8295]

Take it to a bike shop. I'm 3 years late. 😂

[@paramandans]

Don't use those they will jack up your wheel and bike.

[@BlazeWells-ok3ei]

😮😅I have no brakes

[@fuze_perronplayz3637]

I love how they just ripped this out of there entire bike vid and then made an entire new vid on it

[@Employee941]

FuZe_Perron Playz yup

[@Killasandwick]

And the sprocket doesn't fit over the dust cover until you shave the hell out of the inside of the sprocket