My friend’s old Trek shifter boss fell off..

[shinomaster]

What options does he have with this old frame?

Thanks, and happy holidays!

Juanito

[Peter P.]

If he's the original owner, perhaps he can get a warranty replacement frame.

Next option is a Problem Solvers Backstop, available at your local bike shop through QBP.

It clamps around the downtube and creates a slotted cable stop. It's available in various diameters so hopefully one size will fit the downtube.

After that's installed, he'll have to convert that shifter to a bar end shifter and add a brake lever, or install an STI lever.

[weisan]

https://www.hashtagbikes.com/product_p/ld0900.htm

[classtimesailer]

Epoxy.
Drill a smallish hole in the down tube, clean everything well, and glue.

[AngryScientist]

that's really interesting.

is that an aluminum frame?

[zennmotion]

Call Trek. Seriously. I had a mid-80s vintage Alu Trek 2000 where, more than 30 years later, the bonded rear brake mount failed. I had to go through a dealer (not the one I bought it from) and it took quite a while but Trek actually glued the thing back on, gave the rest of the joints a thorough inspection and even repainted the frame all under lifetime warranty- they apologized that they no longer had the original decal graphics available. Word was, they were really eager to see how their early frames held up over time. I can almost forgive them for what they did to Greg Lemond. Almost.

[shinomaster]

Good info, thanks everyone!

[m_sasso]

A slew of different clamps here, including single-sided for a bit less clutter than posted above.

https://neloscycles.com/Shifters-Cla...tube-Shifters/

[bikinchris]

Originally Posted by shinomaster

What options does he have with this old frame?

Thanks, and happy holidays!

Juanito

If you are the original owner, then I agree that you should call Trek. But it does mean you will be without a frame for a while.

Or you could install eTap and not worry about the downtube shifter boss!!!

[Cat3roadracer]

JB Weld it back on?

[makoti]

Originally Posted by shinomaster

What options does he have with this old frame?

Thanks, and happy holidays!

Juanito

Is that an aluminum frame? Perhaps a 2000 or 1500 or something? I ask because the EXACT same thing happened to me with my 2000. Shifter bosses fell off. Epoxy failed. Trek replace the frame, but it was only 3 years after I bought it.

[bikinchris]

Originally Posted by makoti

Is that an aluminum frame? Perhaps a 2000 or 1500 or something? I ask because the EXACT same thing happened to me with my 2000. Shifter bosses fell off. Epoxy failed. Trek replace the frame, but it was only 3 years after I bought it.

At that time, they had the exact frame still in production. Easy way to fix that.

[makoti]

Originally Posted by bikinchris

At that time, they had the exact frame still in production. Easy way to fix that.

Oh, yeah. I don't know what they will do now for the OP. Hopefully fix it, but I don't know that they even do that with frames, anymore. They sure didn't do it very well then.

[ultraman6970]

They sell a boss that is threaded that can be used in your case, but you will need to remove the other one too.

The boss is threaded to a center pilot, easy to install and remove and not expensive, the good thing is that will look stock. not like the clamp systems.

[bikinchris]

Originally Posted by makoti

Oh, yeah. I don't know what they will do now for the OP. Hopefully fix it, but I don't know that they even do that with frames, anymore. They sure didn't do it very well then.

Probably offer him a moderately priced frame from current production. Problem is they don't make any bike with downtube shifters that would be a performance road frame.