Originally Posted by
srinath.the.man
I get it. Threads cause a starting point for a crack and this will not bend and give you any warning, it will just snap like a pretzel. I get it, I am steering away from it (no pun intended
Are you going to do what was suggested by BICYCLE (not motorcycle) experts in the very early part of this thread and repeated - using an inexpensive and readily available threaded to threadless converter? Actually designed for the purpose? A very simple, safe and foolproof conversion? I haven't seen acknowledgement of that yet and you've wasted far more time in your confusing diversions than a conversion would have taken.
Then I see this:
Originally Posted by
srinath.the.man
The more I think about this, the better option is to do what I have done before on my cheater chopper (motorcycle).
There is enough room between the treaded part and the stem for me to run an inner tube as a spacer. Then I'll use a long bolt ~8mm and 2 large washers and bolt it top to bottom. That serves the same purpose as a quill type insert, but instead of friction load transfer to the steerer tube and then the neck it actually bolts them together. That way even if the steerer tube cracks at the threads the bolt will keep it from coming apart. Rubber will avoid loading 1 spot hard too. Not gonna win any beauty contests, but I'll post the result if I ever get around to that way. I have various parts I dont even know about lying here and there. Lets see.
Fercrissakes man. Just do it right! Easier, safer, foolproof (now I'm seeing the value of that word)
Originally Posted by
srinath.the.man
A threaded steerer tube sticking up 2" above the neck tube is inherently subject to get damage even if a quill style stem is inserted and "reinforced". So The right steerer tube (its original) or threadless it is.
Cutting the threaded STEER TUBE so it isn't too long for the frame's HEAD TUBE isn't a bad idea as long as there's still enough threads to get the top bearings adjusted properly. And, although 2" is a lot, they make, and many bicycles use, spacers for that purpose.
Here's one of a million sources;
Rene Herse Threaded Headset Spacers (1 inch) – Rene Herse Cycles
This link might help you to undersand the difference between a bicycle steering/bearing system and what you're used to on a motorcycle.
Threaded Headset Basics - Velo Orange