Specialized Gravel Bike - Convert 90's Mountain Bike to Gravel Bike

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In this one, I convert a 1990's Specialized Stumpjumper mountain bike into a modern gravel bike, complete with drop bars, disc brakes and tubeless tires. I do it right and I make it modern. You can do it too! The end result is a beautiful bike that I can ride anywhere I'd like to go. And I've saved another 90's MTB from the landfill.
Parts list (configuration as shown at the end of the video):
Frame: 1998 Specialized Stumpjumper, Size 18", 22" top-tube length
Fork: Raleigh Redux, Aluminum, 1 1/8" steerer, fits 27.5x2.5" wheel & tire combo
Wheels: DT Swiss E1800, Centerlock disc, Quick release, 135mm hub width
Tires: WTB Crossboss 700c x 35mm, Tubeless, with MucOff sealant
Handlebars: Zipp Service Course 70 XPLR, 42mm width
Stem: Satori Stealth 6, 90mm, 7-deg rise
Seatpost: EC90, cabon, 30.9mm x 400mm
Seat: Oval Concepts 500-series (it came off my Fuji Cross)
Levers: Shimano Sora R3000 2x9 speed
Crankset: IXF 9-speed, triple with inner ring removed to make it a double, 44/32
Bottom Bracket: Shimano BBR-60 with center tube omitted
Front Derailleur: Shimano SLX M661 (triple)
Rear Derailleur: Shimano Sora R3000 GS (later uprgraded to 105-5700 medium cage)
Chain: KMC 9-speed
Brake Calipers: TRP Spyre (Road)
Brake Rotors: Shimano Deore SM-RT54, 160mm
Cables: Jagwire sport, Universal Road kit

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Опубликовано:

29 янв 2023

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Комментарии : 653

@christianalboroto7574 Год назад

The joy of building your own bike can't be beaten. That's it.

@glennoc8585 Год назад

It's a beautiful thing!

@nicholasfulford209 Год назад

Looks awesome, what stem is that & size??

@cd0u50c9 Год назад

Absolutely. As someone who's assembled my own bikes for a fair few years now I can confirm that nothing beats riding a bike you can't find in a shop anywhere.

@rollinrat4850 Год назад

You get EXACTLY what you want. Not what some greedy product manager thinks you 'need' or what makes them the best profit.

@batterybuilding Год назад

Only beaten by building your own wheels which is pretty much the same thing❤

@Echo_Recon_01 6 месяцев назад

the way that frame become a Disc frame is Masterclass. 👏

@daviddahlmann7562 5 месяцев назад

Absolutely 👏🏻

@robertspeer6872 4 месяца назад

I had the same thing happen when I decided to convert my 90's rockhopper. I just couldn't bring myself to alter a bike I've had and ridden and loved for almost three decades. So I did the same thing, went out and bought another. Problem was the new one came as a complete bike and it rode just as well as the first! So now I have two 90's Rockhoppers, the new one honestly even fits better, and I'm keeping my eyes out for another. This time maybe just the frame only. I loved this video and I feel the same way about these old mtb's. They were what I came of age on and they deserve much better than ending up in a landfill. Thank you for this video and I wish you many happy miles on the bike, it's a great build.

@violian5 Год назад

That work you did on that disc mount is amazing. Looks better than what it would've came from the factory.

@einundsiebenziger5488 9 месяцев назад

... would've come* ...

@richmondstar4354 5 месяцев назад

Surprised he did not take the old rear V brake mount while he’s got the tools and paint?

@adamdielschneider9957 Год назад

I love everything about this video--the concept of the build, the shooting style, and the very helpful technical information. Very satisfying to watch this bike come together!

@RobertAdairWorkshop Год назад

Thank you, Adam. That's a nice thing to hear. Appreciate it.

@user-sm1ur5bk2r 4 месяца назад

@@RobertAdairWorkshopсталь шоле Да зачем она

@AllenTufts-sg8sn 5 дней назад

I couldn't have said it better myself - stunningly good work!

@fentuz Год назад

It's worth mentioning that 7-8-9 speed Shimano shifting components have the same ratios so it is possible to mix and math sora with altus/alivio and acera. I use these on children bikes, folding bikes and on my hill climb commuter bike (9S XT cassette as bigger range than Sora and lighter than Ultegra). Also, with 26" MTB, 650B is a good option. I ride/race my modern carbon gravel mullet bike with 650b wheels, XC race tyres and XC transmission (700C are gathering dust)

@engineroom1670 11 месяцев назад

I successfully married SORA R3000 and Shimano Deore LX. Works like a dream. BTW Great video.

@eibes Год назад

Your video is so well done, clear and informative! It's the best one I saw concerning this subject, and I can tell you I watched a lot of them. Thank you for the time spent on making it for our pleasure.

@LOZUPONEJ Год назад

awesome. I’m sure staying with rim brakes would be fun too

@girigauravbhatnagar1 Год назад

Thank you for documenting and walking us through this. Lovely!

@BryanSolanoMX Год назад

Best explained video about 90s MTB to Gravel conversion I've seen so far. Now I know how to proceed with my old mountain bike. Thanks!

@joseott6364 Год назад

I race, so I love a good modern race bike, but the aesthetics of a good old round tube bike can’t be beaten. I also love these old mountain to gravel builds, especially where the brakes and wheels are updated. Tip of the cap to you my friend

@RobertAdairWorkshop Год назад

Thank you.

@pottery1950 5 месяцев назад

Thanks for sharing your experience!

@hamishdore5635 Год назад

I get more joy out of building the bikes than I do riding them. Great video, I've always though about adding my own disk brake mounts and this method seems like the most achievable for me.

@TheTest4echo 10 месяцев назад

Thats beautiful man I really appreciate seeing people bring new life to these truly amazing bikes. I did the same thing to an older Stumpjumper years back.

@patrick_3723 Год назад

Excellent work, and amazing to show how such a frame can be re-purposed - Tidy!

@alicangul2603 4 месяца назад

What an amazing, soothing video! Thank you for this.

@davidwolf6927 9 месяцев назад

Great work, I like your attitude to reuse, repair, rebuild!

@nickdavis9280 Год назад

I agree with you. It's great to breath new life into old bikes. I do it with British bikes. Great channel!

@SamNivlem Год назад

Awesome build! Video was very entertaining, informative and well edited. Great work!

@lukewalker1051 Год назад

You are a true artisan. Well done. Extraordinary work.

@BrianRPaterson Год назад

Lovely job! I reckon discs are essential because they'll work in the wet. I hope the bike had a long and well traveled life. Cheers

@Natalie-rc4cx Год назад

Your sentiment and skill is inspiring.

@yardsalecycles Год назад

Saving a bike from the scrap yard is always a plus I always keep an eye out for older specialized especially the hand made ones ... great build

@kridstax2248 4 месяца назад

Awesome build. So cool watching the machining and brazing of that adaptor

@MarceloParauapebas 11 месяцев назад

One more 90s bike saved! Thank you for doing it!

@TsunamiKitten 10 месяцев назад

This is great. I have two frames that were once "state of the art" that are just sitting there. Now I have a plan. Great job and thanks for posting!

@nakitojimo2001 Год назад

That's awesome.. I'm considering to convert my dad's old MTB (1992 Marin Bob Cat Trail 3 chromo), since he never ride outdoor anymore. Actually I already have a steel gravel bike by myself, but I just want to keep the legacy alive since, like you said, it was still made in USA back then.

@Erik-cq4vc Год назад

Loved everything about this video. The walk through of it all, narration and editing not to mention the great final product.

@RobertAdairWorkshop Год назад

Thanks so much!

@ajwright7936 Год назад

The mount you developed is absolutely amazing. this is so cool. very very inspiring.

@TandemAdventures Год назад

Hey thanks for the great build! I have an old Stump Jumper in my shed. I got it back in ~1994. It was the gray one with red lettering and GRAY TIRES!! So cool!! I just added to my to-do list for tomorrow, "get your old Stump Jumper out of the shed"!! Thanks for the inspiration!

@babyrabies Год назад

that's dedication! I just added a surly cornerbar to my old mtb, rewired the cabling and call it a day.

@Demdere Год назад

Excellent video. Thank you for going into the details about considerations!

@kornenator Год назад

You made it look super easy, barely an inconvenience!

@miller1520 Год назад

Wow, that's one magnificent build. Particularly liked the weld, came out wonderfully. Cheers!

@manooko Год назад

Thank you! This is 1) a video that is clear and beautifully narrated 2) a wonderful project 3) an inspiration for everybody who love bikes!

@RobertAdairWorkshop Год назад

That's good to hear! Thank you.

@forrestgavins6077 Год назад

This looks great, well done!

@eddiea5076 Год назад

beautifully done, great job, very detailed information to the point. I'm in a process of making my 2008 Haro Flightline comp frame into a gravel adventure bike! This is a great guide

@1000monograms Год назад

I really like what you did. Not only it is awesome to save and repair/upgrade something just because you can, but also you have done excellent video on the topic with absolutely great delivery on design process and design consideration for your followers. This is the YT I love. Thank you sir!

@RobertAdairWorkshop Год назад

Cool, thanks!

@aboomination897 4 месяца назад

I rode GT MTBs in the 90s and always say that they were basically roadbikes with fat tires. Used to ride an "all terra" with high tire pressures and basically laid on the bar. Only really needed a drop bar, sadly got stolen. Thx for making that dream come true. Now I wanna look for purple "all terra" frames :D Thank you for all that hard-earned knowledge!

@supertool1987 7 месяцев назад

Beautiful bike and excellent video - thank you!

@LukeRichardson1981 Год назад

Love this. As a tinkerer myself (I converted my Giant hybrid with V brakes into a pretty decent road bike with disc brakes and did all the work myself) this video really speaks to me. And your final product is beautiful. Well done! The only thing I wouldn't feel comfortable doing is the addition of the disc brake mount, but fortunately for me my frame came standard with an ISO disc brake mount (though the fork didn't have a disc mount) so converting to discs was a simple matter of replacing the fork.

@videos6505 Месяц назад

Beautiful work!

@rextrinidad6646 Год назад

Amazing build and attention to detail.

@MustardDonkey 3 месяца назад

thank you for the insight on picking out frame size and component choices!

@ianpadernal7530 Год назад

Awesome build man so cool, old school rocks! Love it.

@Derekforeal Год назад

Very cool setup.

@peterhehn9511 Год назад

I was able to convert my 90's Klein to disc by attaching a plate to the dropout instead of a weld and putting a lefty fork. It looks like a FrankenKlein but your conversion is so much cleaner and almost looks like NOS! Well done!

@rob_cd 5 месяцев назад

Man. Bike looks fantastic. And what an engaging video.Bravo.

@InTheImageOfDNA Год назад

Love the idea. I've done a much milder version of it myself on my 2000 Stumpjumper Pro that had been sitting for over 15 years. After I replaced all the overly worn components, I simply put 26x32mm tires and fenders on it. It loses out on absolute efficiency compared to discs and 700c wheels, but it was my first serious and expensive bike and I wanted to keep it as original as possible while still being able to use it. I've put about 2,000 miles on it since and love it all over again.

@photorockbar471 Год назад

I used to switch tires on my 90s mtb to 26 x 1.5 slicks back then when I wanted fast tires.

@JeremyLawrence-imajez 2 месяца назад

@@photorockbar471 I put a 54/40 chainset on my 1990 Stumpy along with 25mm road tyres to get a fast road bike. Later swapped it back to skinny MTB tyres and left the crazy chainset on it. I used to beat everyone up the steep off road hills because I had no easy gear with a 40-28 lowest ratio and then lie on floor at top gasping for breath. 😁 Been wondering for years about resurrecting it with disc brakes.

@JohnGarlandTrialLawyer Год назад

Great work! Looks great.

@BuffsVintageBikes Год назад

Great video and very cool project. Yours is one of the first I’ve seen where the geometry actually looks well fitted for a gravel conversion. Great work 👌🏼

@RobertAdairWorkshop Год назад

Thank you very much!

@chesterthomas5093 7 месяцев назад

Nice job! Well done video, interesting step by step process, and beautiful bike at the end.

@FreemanBR 5 месяцев назад

Absolutely love the 90s technical course instruction vibe of the video!

@RobertAdairWorkshop 5 месяцев назад

Awesome. Thank you!

@pupi-pupi 8 месяцев назад

Man, thats fantastic build

@zap... Год назад

Nice job. Looks great. Way to go!

@AshutoshDhaka Месяц назад

That looks really good and what craftsmanship

@kffgames Год назад

Amazing content. Loved it!

@choiseulsang Год назад

wow~! very good to see this video. someday i'll gonna make my old bike to the gravel bike..!!

@MMcG25 Год назад

Great work, great video, sharp looking bike!

@cmexcmex9355 Год назад

very cool project and build!

@StereoDiscoShit Год назад

Nice one! Looks badass!

@mikecalver1 Год назад

Nice bike, great disk conversion

@andreanetto69 Год назад

I built a gravel monster bike for my girlfriend, last year. It is funny, really funny to ride everywhere (even tarmac with road wheelset), but my excitement to see people that looks at the bike I built…great video!

@hoangphucvo3376 Год назад

what a build man, goodjob

@DilbertMuc Год назад

Wow, I do have an old '95 Stumpjumper M2 in very similar color. For the gravel conversion I bought a modern 80mm Rockshox Reba Air that already has the disc mounts. For the rear brake I kept the V-brakes (XT parallelogram brakes) using an Extreme cable pull adapter. Most of the braking is done on the front anyway and a mechanical TRP Spyre does the job. Built it with Shimano Tiagra 4600 10s STI and 9s XT derailleur (same cable pull) and love it.

@JohannesCycling 4 месяца назад

Doesn't the higher breaking force of hydraulic disc break damage your frame that was never designed for this force? V-brakes can be quite ok, especially if the terrain isn't all to steep.

@DilbertMuc 4 месяца назад

@@JohannesCycling No. The REBA fork is quite sturdy and designed for disc brakes. The early Stumpjumper frames of the 90's were very robust as ultralight hydroformed frames were not invented yet.

@JohannesCycling 3 месяца назад

@@DilbertMuc Yes of course the fork itself is going to be ok, with disc breaks as it was designed for this system. My "only" concern is the frame 😬 Have you done steep downhill descents on this bike where lot's of breaking is required? I live in the Alps, and the road steepness around here is more often than not measured in the double figures %. Some of them are more than 20% steep which can sometimes be frightning when descending on an rim break bike. 😄

@DilbertMuc 3 месяца назад

@@JohannesCycling Yes, I too live close to the Alps and have been riding there for over 25 years with this bike. The M2 frame is accepting up to 80mm forks and also was delivered with a Judy DH (DH=Downhill... cough, 80mm suspension instead of the usual 63mm 😅 ) later on, even before they enlarged the bossing at the steering post.

@sbaddison Год назад

Lovely build 😎

@mcluvin1749 Год назад

Such a great video! Your editing skills with the animations are amazing!

@sharonmc5192 Год назад

Randomly came across this in my feed. Very impressive. What a fantastic bike. Well done

@RobertAdairWorkshop Год назад

Thank you, Sharon.

@jesuisFORTIO 4 месяца назад

looks amazing! good job!

@marcopaganotto9125 Год назад

That's a lovely build dude 👌👍🙏

@paulosergiodeoliveira7228 5 месяцев назад

Congrats, amazing project.

@stefannewels1823 4 месяца назад

Thx for mentioning the higher BB and also for leaving Your old one intact 🕴👍

@paolodepetris7034 Год назад

Amazing work, keep on!

@gibaambrogi1 Год назад

excellent!!! great job and wonderful bike

@weeringjohnny Год назад

Having to braze on a rear brake mount probably puts some people off from doing a conversion like this. I kept the V-brake on the back and used a mechanical disc on the front fork which I had to get new. A decent V-brake set up stops you well enough and in any case it's the front that does most of the braking as your weight is pushed forward as you slow down. .

@paulmiddlemass6465 Год назад

Yeah that would be my method without having the tools to do the mount at the back. For the same reasons you give.

@Tankthyfrank Год назад

Awesome project. Such a well done video!

@bensbobbershop33 Год назад

Turn out awesome! 🤩

@mattialodi7554 Год назад

Best video about “gravelizing” old mtbs I’ve seen so far. And it happens at the right time, I’ve almost completed my 1995 Trek 930 GRVL 😂

@RobertAdairWorkshop Год назад

Sweet!

@lazylee74 Год назад

Having a 1998 Rockhopper the scene at 1:54 where you decided to keep the bike really resonated with me. ❤ Great project and video btw, I enjoyed it! 👍

@pablovargas829 Год назад

awesome job mate, i love it!

@tlarent6330 Год назад

Well thought out design for a cool gravel bike. Excellent graphics and presentation. Now I want to build one!

@RobertAdairWorkshop Год назад

Go for it! It was a fun project and I got to learn a new skill with the brazing.

@danieletognozzi7641 Год назад

stunning build. exactly how I wanted to build one.

@deepest_blue Год назад

Looks phenomenal, great job.

@RobertAdairWorkshop Год назад

Thanks!

@agustinmerino3453 Год назад

Can´t enjoy more watching this video. Not just for the skills on bike mechanic or attention to details like painting or so, but also the video editing. Everything in this video is smooth and pleasing. Love it!

@RobertAdairWorkshop Год назад

That's great. Thank you!

@angela-onesroman8873 5 месяцев назад

Excellent work my friend, I really admire your outlook on the old frame. I appreciate your passion and pride in your work, thank you, subbed 👍🏽...

@Take2wheels Год назад

Well done, this is inspiring work!

@RobertAdairWorkshop Год назад

Hey, thank you! That's awesome.

@radeko.9918 3 месяца назад

Watching it is so satisfying. It’s like therapy

@ianthompson6268 Год назад

bravo! very nice build and video.

@bilalhajar3597 10 месяцев назад

I like your craftsmanship on this project. Well done !

@RobertAdairWorkshop 10 месяцев назад

Thank you very much!

@michallitwiniuk6986 Год назад

Really great work👍

@69Deez_Nutz69 Год назад

Amazing how you converted a rim brake frame to DISC! Worth the watch time, too bad I don't have any Aluminum stock to make my own but still a bookmark on my watch. 👍

@1carusjohn32 Год назад

Converted my Gary Fisher Big Sur to gravel a few years back. It already had discs but had to convert to cable rather than hydraulic -- the road shifters (105) were cable pull. I lucked out as the 105 10 speed road shifters have the same pull ratio as the deore derailleur 9 speed on the mtb. I ended up buying a 10 speed cassette and everything worked fine. I didn't upgrade to 700c and I kept the shock fork on it. The local gravel boys thought it was a bit odd, but the terrain here is definitely a bit more off road and the shock really comes in to it's own. ( Not surprisingly folks are now buying shocks, with a lot less travel, for the front end of their expensive gravel bikes) Your frame probably has better geometry for this than mine. Nice conversion.

@oldcountry3821 Год назад

New subscriber, based on this video. What a great build and accompanying description. Thanks for saving the old StumpJumper frame. The end mill and brazing work to create and fix the rear disc break mount was very impressive. I'm thinking about a similar project here in Germany. Essentially, you have only very positive comments, so we all can't be wrong. You are the real deal. Continued success to you and your channel!

@RobertAdairWorkshop Год назад

Awesome, thank you!

@benodaboy Месяц назад

Wow - finally I've been looking for an walkthrpugh build for a 26 to gravel bike conversion for weeks - this is by far the best. I'm converting my 2003 jamis croscountry 1.0 because the frame is so good. It's already got the disk brake mounts so should be sweet. Man I'm so excited. Fantastic looked bike - great choice of color on the front fork

@RobertAdairWorkshop Месяц назад

Wow, thanks!

@billymartyn5573 Год назад

Awesome job. The conversation to disc brakes was clean and nicely done. ✅

@RobertAdairWorkshop Год назад

Thanks! 👍

@MoCbr900 5 месяцев назад

Great work!

@Ronin_Texas Год назад

Awesome Result.

@Lotharya Год назад

I found your video just after I did on an old Specialized Allez 1991 a full change of components for ultimate items I could found and I spend a lot of money doing that, but as I keeped on my mind the idea during the process I learned a lot while doing all of this. As you just said nobody has a bike let like yours