Building my Sister her First Mountain Bike (and testing it)

If you remember my old Trek Hardtail, you might remember that I gave it to my sister. Well, I have another sister, and she recently asked me for a mountain bike recommendation. Let's build her one!
I used a Diamondback Sync'r Pro alloy frame, which we had converted into a single speed and used for various experiments. This bike was also my daily rider at one point, and had seen a lot of action.
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[@NatetheAceOfficial]

"I wanna make it cool. I wanna make it personal. I wanna make it a business expense." Ha! Good on-ya for helping out how you can! Being a good brother!

[@SethsBikeHacks]

The auditors can see this video as proof!

[@derekflorence8471]

Oh the shenanigans!

[@RealMTBAddict]

It's not a business expense

[@yaboi3702]

@@RealMTBAddictit’s literally money spent for a video(his business). This is a cut and dry business expense.

[@RealMTBAddict]

@@yaboi3702 it's a gift.

[@Dreamweaver94]

For someone who doesn't seem to like to paint, Seth does a pretty damn good job painting frames lol

[@DavidMaruca_]

With the new house, new garage, 3D printer, mud room, etc? I'm sure Seth is starting to come around to painting lol

[@tbthegr81]

Best way to avoid painting is doing it correct the first time!

[@devincrighton4376]

seriously a kick ass paint job. love the purple blue two tone

[@gnaedigerfels]

@@devincrighton4376 good yes, kick ass nah man

[@MrDjG10]

Nice color choice! I literally just used the same color on my sons bike a couple of weeks ago. Only suggestion I would have is to also use a clear coat to protect the paint from chipping especially a mountain bike.

[@phoenixGrassl]

Hey Seth wet sanding works better because the water is acting as a lubricant, so it’s less abrasive than dry sanding, and results in a smoother finish

[@dakshrokadia_MTB]

😮

[@distinguisheddjentleman8081]

The water carries the dust out of the paper keeping the spaces between the grit clean. Makes for faster and smoother sanding.

[@dustyc324]

​@@dakshrokadia_MTB sanding paint dry clogs up the paper too bad.

[@codyherring3895]

it also allows the swarf (bits that the sandpaper removes) of the cured paint to act as an abrasive.

[@Snowcruizer]

Adding just a dab of soap to the water works wonders

[@sirmyself]

Watching your videos gave me the knowledge and confidence to fix, adjust and clean my parent's bikes as well as my sister's. I may not have the proper setup to true wheels, but I could make do with the brake pads and a ziptie and when they brought it to a bike shop, apparently, they were told there was not much to do with the bike. I discovered your channel in May this year when I was looking for a review for the Trek Marlin 5 and stumbled upon your flip bike for the 29er. I then proceeded to watch almost all of your videos just because of all the high quality content you make. You keep saying you hope we learn something or at least find your videos entertaining. Let me tell you: it's always both. Thanks Seth.

[@cakrawalajingga]

Same here,bro. Keep waiting for a new video. I don't know why... but the video just soothingly makes me relax,,,

[@MrGamerholic]

As someone who bought a marlin 5 recently it rides nicely out of the box. Mine does need minor adjustments on the front derailleur but I am not concerned about it because I will be switching it out to a 1x drivetrain in the next few months. Also the saddle is not right for my butt major soreness after the first multi hour ride.

[@jordanbentley]

Sanding or sharpening with water makes it so the particulate coming off forms a slurry that helps with getting between the cracks/bumps of the surface (i think)

[@oftankoftan]

it also stops you from huffing paint.

[@MarvinWestmaas]

Why do we often lubricate band saws, press drills, lathe's and equivalent metal working devices? Because the lubrication helps with -> preventing clogging by removing particles, aid with cooling and in some cases the slurry is indeed also abrasive. If you wet sand with a more coarse paper it will be a more abrasive slurry because the particles will be bigger. The water will also de-clog the sandpaper more easily. The biggest benefit of wet-sanding is therefore being able to use a really fine grid without it clogging up immediately. I think...

[@alaricpaley6865]

@@MarvinWestmaas Nah, you got it

[@jakecole7447]

@@MarvinWestmaas and also those big particles clogging up the sand paper can cause it to be more abrasive with deeper grooves which you might not be able to buff out later - for paint that is.

[@SethsBikeHacks]

Intuitively it feels like that's what's happening.

[@snbsmtb]

That paint looks sick!! Hope to see more of it in the future Seth!! And that bike deserves to be ridden rather than sitting in a storage unit. Great video though!!

[@Shadiestallie420]

We probably won't see it and won't be in his unit he said he's sending it to his sister.

[@incurseio]

@@Shadiestallie420 He meant the paint

[@e36z32]

Great build. Your daughter clearly has an eye for color! It’s killer looking. Would you do a parts value breakdown of it similar to what you do for flip bike videos?

[@mircea5013]

Copper or brass would have been far better, as he showed right before using the purple. It needed some contrast. Sorry. I'm brutally honest.

[@konishiwoi]

Your daughter was right on the money with the purple accents

[@CoffeeMonster12]

That paintjob is actually amazing

[@rizzors25]

Right? Actually surprising how good that looks. Need to find something to paint like this

[@jedscaramella3398]

Loic Bruni had that paint in 2017ish? Specialized used it for 2018-2019 models. Had it on my old Stumpy, it's better in person!

[@michaelmay9728]

I want to know what color that is? Anyone know?

[@jessy407]

​@michaelmay9728 it's in the video..purple blue shift..

[@wadestewart4548]

I work in a bike shop and the comment about how dropper posts work just office chairs is something I'm definitely going to use to explain how they work. Thank you.

[@spyder027]

I’ve used that was to describe them for a few years and I’ve never heard someone else say it

[@pokeypaul78]

I hope you remembered to put a Berm Peak sticker on there...

[@bryanwagnerseniormtb9940]

Nice job Seth! That color reminds me of my wife’s Liv Intrigue with the chameleon galaxy paint, love the color shift. I’m 100% confident your sister will be blown away by your efforts. I’d love to see a video of you and your sister going for a ride together.

[@joshuatatro4503]

As someone who switched to a SRAM 1x11 from a MicroShift 1x9, I can totally see the allure of the Advent setup. I have to adjust the SRAM every so often, but the MicroShift seemed to just stay put and was rock solid in operation the whole time it was on the bike. If you want simple and reliable the Advent 9 or 10 is amazing (not to mention inexpensive).

[@oldshovel]

Always good to go with the advice from your daughter. 🙌

[@lynxg4641]

Not one to normally comment, but this deserves one. 100% think that the build you did is perfect, that 9spd Microshift drivetrain, CST BFT tyres, Shimano Brakes all super good, super reliable, your sister will be stoked. Oh also love the colour shift paint, so sweet.

[@chorito1]

Do you know what chain did he use?

[@lynxg4641]

@@chorito1 far as I can tell it's a KMC X10, a lower end one.

[@noobdaygamers6677]

Men only have 2 moods 1. Extreme affection and love towards siblings, ready to give them all and sacrifice their own life for their's 2. From the bottom of my heart i hate you

[@aaronandtim1]

Perfect timing, quiet night at work. Much Love from Down under Seth.

[@LeaveNoTrashBehind]

That's a wicked bike! I hope you start the flip bike series again, that was fun to watch.

[@ainteasya]

I love how you kept this build battery free. Im sure your sis really appreciated that ❤

[@zog6940]

The spray-on automotive clear coat you briefly showed is AMAZING. I've used it for so many things. looks great and gives insane protection. I've even used it to clear coat custom videogame controllers for friends. I shoulda known that was what you use too

[@anaboveaveragedog]

Seth, you should do a golden ticket type thing with merch. Ship random merch to subscribers and if they win, they are invited out to Berm Peak maybe get to see your workshop and ride the trail. It may be weird because it’s at your house but it would be cool to see, maybe make a video out of it. Possibly a great a idea?

[@danielfinegan3723]

Ahhh I remember it well when Seth got that Sync'r and retired the trusty Trek 4900. The 360 on that step up at the start of this video is iconic folks!

[@lowerdfool]

Wet sanding is common on high grit paper, because the sand paper will load up too quickly, and stop actually sanding if it is dry. The water helps carry whatever your sanding, out of the grit of the paper.

[@travismorgan4249]

Purple was definitely the correct accent color! Bike looks great!

[@srdjanbabic8304]

A mountainbiker will do everything to get their siblings in the sport! That's the true spirit! Great video!

[@OrdinaryMech]

Plot twist: Seth’s sister is 6’4”

[@jonatankaj6380]

You have probably got this question a lot, but what happened to flip bike? Loved the series.

[@cgstadler]

Seth- another possible tip for your sister: is that a push shifter? Where you use your thumb to shift both up and down (vs the pointer finger on the other side of the grip).

[@Azeem200LBS]

I still remember his old videos back when he used to live in florida,and he torture tested a mongoose bike from Walmart ad his sister (Emily) was riding the og trek 4900, those were some good days 😄

[@winklertribe5268]

That paint job is fabulous! Great job Seth! Your sister is so lucky!

[@tydontdy3459]

Purple was the correct answer. Your daughter has swag... Or whatever the kids are saying now

[@64Spokes]

Wow what a trip down memory lane I remember when you posted that murder machine video and it was the reason I stared loving the “hardcore hardtail” scene. Sad to see it go but at least it’s going somewhere great!

[@atlascharles6895]

I believe the water used when wet sanding acts as a lubricant and helps evacuate the particles of paint from your sandpaper. So, it prevents your sandpaper from clogging up so that the sand can be more effective when cutting through the paint, while also lubricating it and making it a bit easier to sand.

[@jacobrick6515]

I think it also evens the sanding because the particulates are dispersed in the water

[@atlascharles6895]

@@jacobrick6515 Yep, I agree. Preventing build up on the sandpaper naturally evens the sanding since you don't have high spots on the sandpaper.

[@jridges9956]

I love that Seth can make things like this into a video for us to watch

[@deenukagunawardana5620]

Seth says himself that he's not good at painting and he doesn't like it, but Seth has good taste. Most importantly Seth is a great brother. His sister is lucky to have a brother like Seth

[@pablorincon6982]

Please seth,,make a video about how to secure your bikes at home!!😃 I thought that my garage was the safest place but they manage to get in and stole my 2 bikes😢 Police👮‍♂️ did nothing to help me, even when I found the thief I had to stole back my own bikes !!! All this happened in california,so send that bike with a big chain and locks🔒⛓️

[@samurphy]

Would love to see a video about the Chinese groupsets. I see road bike channels doing work with LTWOO and Sensah, but would love to see an honest review of something like the Sensah RX12 1x12 MTB system

[@Jb995k]

There’s a cool type of bike you might want to check out, I have one myself and they’re a really good looking and fun thing to have. They’re called mini rockers. Mine is the IROK rocker+ mini monster ❤

[@trev5862]

Hi Seth, What kind of fork oil should I get for a Rockshox dart 2? And I love to do downhill and jumps. Thank you love your videos keep up the good work.

[@MS-bw7yt]

That chainstay protector will rip the paint right off, when you remove it. Fresh paint needs about 2-3 weeks to degas, before you apply any sticker, foil etc

[@JaredRMorgan]

good call on the micro shift. underrated kit right there.

[@onlysendsmtb]

9:30 Now I get it, there are tangible advantages to tubeless, but not getting flats is just silliness. I run tubes and haven't gotten a flat in years...and I ride hard. I ride Shepherd Mountain. I see tubeless guys with flats all the time. Y'all have just drank the coolaid with this "flats less often" nonsense.

[@HeisenbergFam]

You really are supportive and respectful sibling if you are willing to build a mountain bike for your sister

[@rpungello]

Content baby!

[@noobFab]

No Berm Peak sticker??!? Fur reelz? Awesome build, especially the paint job - looks awesome.

[@DaveLivesey]

echo your thoughts on the microshift - i put it on my hardtail and shifting performance is as good as my eagle GX or indeed just about anything I've ridden in 20 years.

[@mtbeatsleeprepeat333]

If you’re looking for video ideas should do a mini rock or BMX review video

[@waltysalamander]

That’s cool! You should do a whole video where you take her on her first trail!

[@Tyreinn]

They live on opposite coasts, pretty unlikely

[@waltysalamander]

@@Tyreinn He goes to whistler bike park. I’m sure he can get to California.

[@bonemasterj]

This is a wild guess, but maybe adding water to sand works better because the sand slides instead of tumbles over the surface.

[@samarthdarole5439]

the murder machine video was the one when i got to about this channel during covid and got me into MTB's great to see how much you have grown now, murder machine will be missed

[@dustinmorse8497]

I see you gave it proper dampening 10:48

[@sajgoaron8382]

Hey seth is was looking to buy an affordable dereilleur adn is the sram gx 2.1 a good one?

[@josephawatson]

Wet sanding keeps the paper from loading up with the material you are sanding away.

[@michaelflower5872]

Great job Seth, paint job is excellent. Only thing missing is a Berm Peak emblem or at least sticker on the frame, be proud of your build. Great Video.

[@ronn8751]

Hey Seth do you have any mountain bike recommendation. ( Please send me a mountain bike )

[@jacobelliot218]

top of the range carbon rims but a Walmart drivechain.what has the world come to

[@allanridesbikes5856]

Oh man! A piece of Berm Peak history is coming to California! 🤙

[@KrishnaTejasVoruganti]

Remember her from ur old Florida vids, glad to see she's got her own bike now

[@alexflosho]

Well, I’m gonna go get that DupliColor and paint my bike now

[@natesheffield9524]

As skeptical as some can be to stray from sram and shimano drivetrains, the microshift advent setup is actually really nice, ive been running an advent x 1x10 on my gravel bike and i love it, its solid and has drop bar compatibility, never seem to have to adjust it and it goes super wide range for a 1x setup

[@everyhandletaken]

+1 for the Advent, been running one for quite a while & it has never missed a beat, nor dropped a chain. They are great value & can't fault them

[@kylem3373]

The bike came out absolutely awesome and what a great thing to build a bike like that for your sister

[@mtbwithtfb]

I learned that you are really good at what you do, Seth. Both making video content and building bikes. I always learn something and I'm always entertained. Thank you.

[@dadbod4life]

Imaging calling your brother for help with a bike, and its Seth!! How amazing!

[@janeblogs324]

Wet sanding prevents the paper from clogging and also keeps heat down

[@magruderable]

Dudes a wizard, I swear. I love that he has all those parts.

[@jacobg130productions]

I could imagine that conversation: “Hey sweetie.” “Ya!” “What color do you think auntie would like?” “Purpa!” “Alrighty then.”

[@robinstrahl4282]

I love that you had your advertising in such a way that you can still recommend parts from them after you have ended your partnership with them. You are such an honest guy :) And you make so great content :) Thanks :)

[@alexflosho]

I do love Sram but I agree with you on the Advent.

[@darrendahlin7720]

Great choice with the Ergon saddle and grips!

[@Mrkeats5487]

Really nice job Seth your sis will super pumped.

[@jurajkovac1770]

Hi Seth. Here is explanation in short. Wet sanding works because water or any other liqiud keeps sandpaper from being clogged. also particles (ussually sanded paint) becomes abrasive together with sandpaper and its microscratching the surface, creating even but relativelly porous surface, which is best for adhesion of new paint. Great video as usual.

[@playgroundchooser]

Wet sanding also helps remove heat so the particles coming off the job don't "glass up" and become harder than the sandpaper itself. Not unlike if you bake a disk brake pad. 😛

[@shaikhassu07]

Hello sir love from india Love your video

[@joecexe1]

the colour on the frame looks so sick

[@Basement_CNC]

thx for inspiring me for all the mtb stuff, the murder machine especially make me crave a good all black mtb hardtale ❤

[@allanbuchan6947]

Nice paint job Seth , what make of paint is that ?

[@georgepickles8636]

Why do most of your mtb bikes have tubeless tires

[@Jun235sg]

Nice color combination + nice bike parts = nice bike

[@plixplux]

Wow, you did a banger job on the paint! Nice!!

[@demonstructie]

Wow his sister must be the one person to have moved _TO_ California recently

[@fenrir_-_]

Gotta love it when your family gets into a hobby ur a nerd in

[@llianjobarcas8811]

turn a japanese bike to a gravel bike please :D

[@Benjatheman17]

I didn't know you had a sister! She will be so happy with the bike. Great thing you did for her!

[@jakecohen5739]

Describing the dropper post as working just like an office chair literally just changed my life. I'd never heard that before and now I have a good way to explain it to everyone who asks "wait how does the seat work?"

[@RealMTBAddict]

How did that literally change your life? Lol

[@nowrideyourbike-nyrb]

Hey Seth, can you do a review of IXF CRANKSETS? Hope you can since there are lots of questions for this Crankset that are not adressed, maybe you can help. Thank you from the PHILIPPINES.

[@CorbinOutdoors]

“We’re gonna need a dropper post” Me: “dang, better go to the store” (Proceeds to pull out 20 of them)

[@davet4051]

It needs a Berm Peak sticker for a head badge! You sister is gonna be stoked.

[@s1ocky]

I kept waiting, the whole video, even in the outro... I'm so disappointed. Let down. The whole video is ruined, she's gotta send it back and he's gotta do it right! Complete fail! (Obviously sarcasm here, I love the clean stealth look. I really am shocked he didn't put a single sticker anywhere though.)

[@jurriaandejongh8677]

That color shift paint is SICK!

[@ironman12328]

The Fact Your Daughter can say Purple means that there not much Time left before she ask Daddy to build a Slide with a Swing, and Daddy builds it ,... Mountain Bike Themed with Ponys,... I could see that in the Future of this Channel,... well I can´t wait for more Ideas from her for You

[@mtbboy1993]

Sweet build. You should try VHS 2.0 chain stay protector. It has knobs with air pockets, so they dampen the noise. but it will do a great job at protecting the chain stay, and keep the noise down. it's secured by 3M VHB adhesive, so it's gonna stay put for a long time.

[@mathewnunez]

Markham Park…very first clip😍!!Going there tomorrow morning for an early ride!

[@kyboy9730]

What a cool thing to do for your sister bro

[@MichaelsJohnDeere]

For a minute I thought Seth was having truck trouble then I remembered it’s the new lightning F150 and the hood up just means your storing something. 😂😂😂😂

[@harrygrimley4352]

This is awesome. I specially like that you went to the color expert fo advice.

[@bilinasmini3480]

that the sand can be more effective when cutting through the paint, while also lubricating it and making it a bit easier to sand.

[@tobyirwin4040]

It doesn’t clog up the sandpaper 1:12

[@knightsljx]

as people have already commented, wet sanding prevents your sandpaper from gunking up immediately, especially if you're removing paint. but the biggest benefit is that it's better for your lungs as you're not breathing in the particulate matter

[@calvinboyle6700]

really nice build keep up the work

[@JWO1965]

Bikepaint rattle can is the $#|+

[@MinnElias]

I washed my bike after watching one of your videos and it rusted out and doesn’t shift anymore 😅. Gotta save up for a new one. Great video as always, Seth!

[@stephensbikerepair]

That would be sweet if I grow big enough to do the same thing.