bOsscO

Cool thanks! We'll see what comes to light as I continue. If I can find a serial # maybe I can narrow down the age.

wesmamyke

The rest of the frame details can narrow it down too. What's the bottom bracket yoke look like?, head tube size, seat tube size etc.

Not sure if they made them late enough to have V-brake specific cable routing with no canti hanger, but that would be '97ish.

bOsscO

Right, ok. Some more pics;

Bottom bracket yoke

Seat post diameter is 26.8mm.

Original sticker on toptube says OMP

Canti hanger on rear

Rear brake bosses
Headtube diameter is 1.25''.

2cam16

The "omp" probably leads to an IBOC COMP. Sounds like a good one!

wesmamyke

Matches this '95 IBOC Comp: Mongoose IBOC Comp SX 1995 | Retrobike

I would be careful if stripping the paint that's left with anything harsh. Looks to have bonded main tubes.

Niall Dublin

Took the plunge a couple of weeks ago and ordered parts from all over, which eventually all arrived. Spent yesterday putting things together, and went for an 80km shake-down spin today. Nothing rattled, and nothing fell off. Happy enough with how it turned out, I haven't decided what to do regarding rack or luggage, not settled on saddle or pedals, but I'll leave it as is for a while. It's pretty tall, due to the high bottom bracket on these bikes, approx 2" higher than normal. The brace between the chainstays wasn't drilled for a fender, so I ended up with a bit of a bodge, using a Daruma eyebolt and cable tie, if anyone has a better suggestion, let me know.
Nitto Threadless Adapter, Nitto Bars, Ergotec Stem, Gran Compe Friction Bar end Shifters, Cane Creek V Brake Levers, Berthoud Fenders, Compass Naches Pass Tyres.
Cheers, Niall.

M800 Before

M800 After

bOsscO

Cool thanks for the info on the IBOC model, and warning on paint removal. Rather than paint stripper would multiple steps of metal specific sandpaper be a safe alternative for this frame? I've seen a few videos of this starting with 400 grit, then 800, and 1500 to finish. https://www.3mcanada.ca/3M/en_CA/com...4529206&rt=rud

wesmamyke

I would think doing it all by hand would be okay. Wet paint would probably be the way to go if you want to paint it.

Pretty sure I've seen a bonded frame on here that was powder coated and the person seems to be alive still. It just seems like a bad idea to attack decades old bonded joints with solvents and/or heat though.

J.Higgins 

I've repainted composite and bonded frames with little more than wet-sanding and a coat of primer. as in this case however, a little more sanding will be required to remove the hideous respray coat. Laborious, surely, but it can be a soul-soothing exercise if you do it right. I sometimes take a frame and an assortment of abrasives and water out to my deck and sit there and enjoy the air while I merrily sand away the sins of the previous owner. Sun shining. Birds singing. Breezes blowing. Ahh!

bOsscO

Awesome thanks, will start hand sanding with various grits.

Right on. One reason I started this project is due to COVID-19 and all the extra time I have. Sure, our garden has never looked better and all the house projects we've been putting off are getting done, but this bike build is a good way to flex my mental muscle.

Voodoocurt

Not MY conversion but the one owner before me... I’m not sure I like it yet, I’ve got some fiddling to do with it to get it just right but always wanted a 90’s Stumpy, and I think this is a ‘90 or ‘91. I added a vintage Blackburn rack for a bag for the family, and I love those Sim Works/Panaracer Homage tires. Got it cheap too.... it also came with ALL the original components.

Voo

bOsscO

Wow it looks as good as the day it hit the LBS sales floor!

Voodoocurt

Ha, Thanks! It is pristine...I bought this one and an '88 Hard Rock for 200$. I picked them up and was shocked for the price. They are pristine... I only found one or two spots that are chipped. No dents, dings, nothing...a scratch here and there that buffed out but other than that they are both in pristine condition. Here is the SS '88 Hard Rock...it is a rocket.

I will probably change out the drop bars back to a MTB setup for the Stumpy... or maybe just raise them up some, not in love with the setup...not real comfortable to me.

thumpism 

Can't believe you didn't use the hanger tube built into the stem! Think of all the weight you could save; front hanger, nut and bolt and all that extra housing.

Voodoocurt

Ha! Yeah, this is the way I bought it off FB...I'll be re-routing and using it very soon.

rmplum

Huron River Drive is gravel (for a few days at least). So nice!

jlaw

I've seen the Sling Shots many times - how do they actually ride? Do you ever notice that the down tube is missing?

Interesting bike.

BCATC

Stupid question and I'm probably overthinking it:

I feel like I need additional reach and I'm close to maxing out the height of my stem. Does the minimal insertion line need to be below the top bearings of the headset or the top of the headtube? Or is it just a simple matter of, as long as you don't see the minimal insertion line then you're fine?

RichSPK

As long as you don't see it, you're fine. I don't mean cover it with electrical tape, though!

You might want to try a stem that extends farther forward, too.

ravenix 

Haro
My old 80's Haro converted into a 3x1 speed. Perfect for cruising the trails around town....

The_Joe

My Marin project in almost it's final form. Set up as a 1x7. Carried me along a comfortable 25 miles for her inaugural ride this past weekend.

rmplum

To me they ride like very lively steel bikes - but heavier than the super lightweight, whippy stuff. It's not weird or super alien or anything - and it's certainly not "mid suspension" of any meaningful type. I've owned many and find them to be a lot of fun. It's perfect for how I have it setup now and I ride it off road somewhat frequently still.

ravenix 

Haro Front View

RichSPK

That rack looks like such a good match for the frame!

Squeeze

That looks great!

Does anyone know if those late '80s Specialized MTB have a wide enough frame to take a modern 8/9/10-speed rear wheel? I saw a twin of that one (same size and color) on craigslist recently that tempted me but it had a 6-speed rear wheel and I figured I just wouldn't bother with it for that reason alone.