How 'bout a build thread? 1993 StumpJumper M2 Dadbike

This is more for me to record this, but maybe some of the stuff I run into along with way will help others, so here we go.

So I’m scrolling Facebook Marketplace, like ya do, definitely not shopping for a bike, and this 1993 StumpJumper M2 frame pops up for $60. The colourway is what caught my eye.

It’s got a rad paint job, and these 90s MTBs are cool. Tubes look nice and thick, and it’s aluminum which I’ve never tried.

Typically I’d just be like “Cool frame…” and continue on, but the price seemed pretty low for it, so I thought about flipping it, then thought about how I’ve been wanting to build something with gears … why not build this up? Make it a 5 or 6 speed and put some fatty tires on it and swept back bar, make it look like something on r/xbiking, easy!

So I arrange to get it from this guy, and I see that he has tons of other bike stuff for sale. He is clearly “a bike guy” so I throw out the idea of trading him a Flite Titanium + cash for the frame. He didn’t give me an enthusiastic yes on that right off the bat, but asked me to bring it along. I got that saddle a while back at an estate sale attached to a LeMond pantographed Campagnolo Aero post (which I sold for $200) for $8 total, so I guess you could say I got the saddle for $4.

The guy ended up taking the saddle & $40 for the frame. Nice. Call it a $40 frame. (The proceeds from the seatpost were already absorbed so I can’t say the frame was free according to bike math.)

Cleaned up well! (Still more to go though.)

Now I have to get parts. My initial plan was to do it low and slow to get deals on used high-end modern stuff mixed with some high-end period-correct stuff, but quickly found that even on the used market, I don’t have Paul/Phil/King money.

This is going to be a budget build with some splurges here and there, and of course it will be forever changing, like over time I might buy some higher end things.

More Facebook searching. Was going to just get another bike and swap parts over, but there was nothing great for cheap.

Then a RockHopper Expert likely of the same year pops up in Houston, TX (I’m in Dallas - 4 hours away) with a ruined frame for $40.

That would get me a wheelset, brakes, derailer, shifter, headeset, bottom bracket, and most importantly, a fork … or so I thought.

Anyway, I asked @Lucky_if_thats_possible (m4bandit for the OGs) if he could go get it, and he said he could, but my brother was also gonna be down there, so I sent him instead since I could easily get it from him.

Here’s a picture of that pile along with the M2 at golden hour:

The thing I was stoked about the most was the fork because those seem fairly hard to come by. I drove 2 hours to Waco to get the RockHopper from my bro and can immediately tell that the steerer is going to be too short. F. Take it out, and yep, it’s like 25mm too short. Not gonna work no matter what sketchy stuff I try to do. I was considering cutting & lengthening it or trying to do some janky threadless conversion…

At least I get a wheelset and some other stuff, right!? Sort of. The bottom bracket has some weird splines that neither me nor the LBS had the tool for, and they said they have no idea what it is. (This is the big well-established shop in the area and they know their stuff.) BBs are pretty cheap anyway so I’m just gonna get a modern sealed Shimano or Tange one.

This is the OEM wheelset that was used on both the RH and SJ of that year, which is cool to me. I like when things are correct. Decals are all faded, but I might have those reproduced. We’ll see.

Only problem is the rear is missing the freehub body. No big deal I thought, I’ll just get another one.

Oh wait, it’s a Suntour 8-speed Microdrive hub (says MD8 on it).

Research sez its own thing, not compatible with anything else, only around for a short time, hen’s teeth, but excellent when working well. Great. I’ll get that figured out somehow I guess.

The RockHopper had all the original Suntour XC Expert stuff on it, just missing the front derailer which I wouldn’t have used anyway since it’s gonna be a 1 x 8 if I can find a cassette that’s not $100…

Since the frame is toast and I can’t use the fork, I put the fork on eBay by itself and pretty much instantly sell it at $55 + shipping. I also sold the Panaracer Darts off the wheels it since they were in good shape and I want different tires. Net $70 for that stuff, so I’m ahead $30 on the RH buy and effectively have only $10 in the build now.

Back to the fork search, I find this vintage Specialized Facebook group which has some pretty sweet builds and stuff for sale, so I ask if anyone has a fork, not expecting anything. I get two dudes offering to sell! Picked one up in the correct color for $80 from a guy in Colorado.

Definitely enough steerer tube now!

$90 all in at this point. Not bad for a 1993 StumpJumper M2 frameset? I mean, people are selling other versions of these for way more, but that’s eBay prices.

That’s where I’m at as of today.

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dropped the stem in the ups last night

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Can you post a picture of the drive side cup and spindle? Early 90s MTB was a lawless time.

yes, we are quite curious on this side of the internet

I’ll do you one better, here are both sides!


I had the lockring off at the time. The bearings are pretty crunchy, but I don’t even know if this is loose ball or sealed!

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quite the queer 10 notch’er

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bet you can bang it out with a flat head and a hammer

That’s definitely a Suntour BB. It uses a special tool, Suntour TA230 from the Googles.

I bet you could use an ISIS cup tool on it, though.

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Nice! I just don’t know if it’s worth it long term. It’s either buy the tool or buy a new BB (which I already have the tool for). Don’t really want to be slamming it off and on for service if it is loose ball. If it’s sealed, it’s “cooked” as the kids say.

Pretty sure it’s sealed? Word on the street is you can use a Park BMX freewheel tool to remove it but I never tried

Yeah judging by photos I’m seeing related to that Suntour wrench, it likely is cartridge, in which case it’s no good anyway.

The ACS 4-probably has the same diameter.

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ATMO check if it’s a 73mm wide shell before spending $ on the replacement BB.

It’s normal width

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OK so like @jame5on said, he kindly gave me the OEM stem for this bike, I just covered shipping which was $8.53

Found an identical Suntour MD8 parts hub for $31.26.

Gonna be upset if I can’t swap the freehub over. It sounds very nice.

I also got what I hope is a correct NOS cassette for $33.56 which happens to be on an NOS Suntour SL hub. The freehub bodies on the MD and SL hubs aren’t identical, but the cassette appears to be the exact same Powerflo AP II cassette people are selling as “Microdrive.” It uses the two threaded cogs that lock the cassette onto the hub, so in theory it should work. Maybe the SL freehub body would have swapped over … who knows! We’ll see how it goes - don’t have it in hand yet. I’m curious so I’m going to take them both apart to see what the innards look like.

So that puts me at $64.82 to get the wheels complete if the parts work out.

I know I’m jumping through a few hoops here when I could just go buy a new or used wheelset that’s already good to go. Maybe the house brand Specialized rims aren’t the best, but they’ve gotta be decent, right!? I also like the fact that it’s OEM, and that’s still a lot less than comparable options for what I have in them. I haven’t found anything better or cheaper locally. I’m not trying to end up with some random POS set either, and if I want genuinely good stuff I’d be paying way more than $64. Given that, and the fact that I already have the Suntour shifter and derder, chasing down the parts to finish a wheelset I essentially got for free makes sense to me.

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tarcklebee build thread dither so far I love it.

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It’s here!

Gotta love it when they have the original price tag on there still.

Let’s see if the cassette swaps over…

Fully on the hub!

They’re pretty similar hubs, but the SL has a 130mm axle, and I need 135 so I wouldn’t have been able to use this (unless I got a longer axle…) even if the freehub guts are the same. They feel and sound different, but who knows. There are also more threads / more thread area on the SL body than on the MD.

Little test fit in the frame …

That looks awfully close to me, but I haven’t built a bike with more than 1 speed in forever so I don’t know. I’m sure it’s fine.

With the way this is made, it looks like I could thread off the 11t if I wanted to. Not that I will, but I could.

Next will be disassembling and swapping over. We’ll see how it goes!

If anyone wants the NOS SL hub, let me know.

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what are ya gonna do for bars? choose carefully, as this will decide your 26” mtb category fate.

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vintage 1990s SCOTT Mountain Aero Handlebar Multi-Position Trekking Bike Packing | eBay

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All I want to know is what kind of monster cuts the spokes off a hub and leaves the cassette on?!

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