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That is a clamp on shifter mount. I don't know the diameter or whether it was intended for stem mount or what. If stem mount it might be close to the right diameter. 4 mm is a fair bit bigger than 1/8", but some 1/8" rivets might expand enough to grab hold. 4 mm is about 5/32". There are...

The idea of the small diameter pin is to keep the boss from trying to rotate without relying on the concave profile to do that function. It would be more important for down tube shifters than STI but I would prefer to drill a hole in the down tube for it if it were my bike. On the CAAD2 frame...

I am wondering if you could drill out the rivet farther forward on the stay and use that as one attachment point for the stop. You would have to drill another hole but they would hopefully be far enough away from the existing hole to avoid stress cracking of the stay. Another option would be...

It's not something I have needed to research. When I looked at my 1987 frame, it had a 2 hole stop, with the holes perpendicular to the center line of the stay. Is there enough material in the stop you removed to allow you to drill another hole to match the existing hole in the frame?

Nice work. Looks like a pretty big lathe. What size and brand?

By high gear do you mean the largest cog? That is actually the low gear - lowest gear ratio with a given chain ring. I can't see what model of derailleur you have but it looks to be something like a GS cage Shimano. I'd need to know model number of the derailleur and the tooth count of your...

Yes. I have never drilled any rivets out of these frames but my guess is that they are aluminum rivets with aluminum shanks, which should drill out pretty easily. Problem with drilling out rivets is that the drill will often want to drift off the center of the rivet into the gap between the...

I have never checked the 1989 sloping SM900 Red Shred geometry to the later BOTE frames but the concept is clearly similar. Glad that you picked the bike up. The paint and 2.8 decals are still sticking points for me but that issue won't detract from it being a great bike.

Good to see. Hope they will be interested in reproducing more parts. The down tube shifter bosses for road frames would seem to be among the most in demand bits.

From what I can see, that should cover what you need to cable the frame. I haven't seen the stops you mentioned but derailleur cable tension and be pretty high. Back in the 1970s when everything was attached by clamps, frame builders used to braze a small piece of steel to the underside of the...

I never measured the stay diameter of an early Cannondale but my guess is that it's at least 20 mm so that clamp would be way too small. You could probably drill some holes in that stop and rivet it to the frame, but I wouldn't want to add more holes to the stays, especially if they were near...

Certainly something to consider. There are lots of options out there for vintage frames - all materials and brands. Don't know what your priorities are.

Kroil has a reputation as being the best penetrating oil but it's expensive and you usually can't find it locally. PB Blaster has a pretty good reputation and is easy to find. You can sometimes pick up framesets for less than the fork is worth so there is value there. These frames could be...

I was thinking that the 1987 frame I looked at had the two rivet holes (nearly) parallel with the rear wheel axle - in line at 90 degrees to the centerline of the stay. Those look to be staggered - kind of on a diagonal to the centerline of the stay. I have a couple of 1988 frames and some...

Maybe PM Improve Part. Was hoping he would get the parts in production because there aren't many options out there.

No special tools required, just a proper sized drill bit to drill out the rivets on the chainstay stop (start small). Adjustable wrench will remove the down tube bosses. Just be careful to loosen the correct side. The fixed side boss is diecast and pretty delicate. The one in my picture has...

All have the same decals and paint? Certainly could have been a limited or end of the year release that doesn't show in the catalogs but the 2.8 designation doesn't compute - especially since when the 2.8 frames did appear in 1995 they didn't have cantilever dropouts. I have a 1995 M900 that I...

The chain stay housing stop is made from a piece of steel about 1/16" thick. It is attached to the stay with two pop rivets. If you are handy you could probably fabricate a replica. I can get you a picture of the original if needed. Ask around your local bike shops about shops that were...

Looks like someone has run full length housing all the way to the rear derailleur but I can't imagine that it doesn't affect shifting performance. SunTour made some clamp on front derailleurs with a cable housing stop but I doubt that they would shift Shimano 11 accurately.

The gold portion of the down tube boss rotates independently of the concave boss, so that allows the assembly to tighten up without damage to the tube. You put the fixed boss and threaded rod through one side of the tube, add the boss for the other side, and tighten the gold "nut" to bring...