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Tony Martin?...

Which Tony Martin? lol.

I'm neither the Cyclist, shooter or Black Sabbath vocalist.

Tony

Absolutely, I'd far rather use a shim for that kind of correction, where it's two decent pieces of aluminium, rather than the 'coke can' style for smaller diameters.

OK super, that's good to know.

Cheers RPM!

Tony

RPM, sorry to bother you again with another question but from what I can gather the Pro Vibe stem only comes in 31.8mm meaning that a shim would be required to reduce the diameter from 31.8mm down to 25.4mm which seems like a lot to me - correct me if I am wrong.

Tony

I use a pro vibe 7s stem with 34cm nitto B123cromos and velo solo shims.
Stiff as a board.
Have no experience of the OS nittos or x4s and don't see many sprinters using Thomson stems any more tbh.

I don't like any element of doubt in my equipment where safety is concerned.

I totally agree and personally I have always disliked handlebar flex. I have seen a few sprinters on the Thomson stems over here at least.

I'll look into the Pro Vibe stem too with the shim method, it seems like a very stiff stem and I see you did some research before settling on it.

Thanks RPM

Tony

Thanks for the replies guys.

The following post here gave me a few doubts https://www.lfgss.com/thread35890.html

RPM, how do you find the stiffness of the 31.8 stem (X4 I presume) with the shim? I have just seen on FGF that you had the same doubts a couple of years ago with the interface. Also do you think the newer Nitto OS bars go well with the X4 stem for sprinters?

Cheers

Tony

First post here.

I am a sprinter wanting to use a Nitto B123 bar with a Thomson stem and from what I have gathered the steel B123 does not go well with the Thomson Elite stem. The B123AA seems to be OK with the Thomson but I am (perhaps unduly) concerned with the stiffness of the aluminum bar.

Does anyone riding track have any experience with the above combinations and could help me out?

Many thanks

Tony