Author Topic: Stem Shafts Sizes ? (Read 950 times)

brass monkey! · « **on:** June 28, 2007, 09:43 AM »

can anyone enlighten me...............................

How many different size stem shafts are there ?

I have a Gold Sugino Stem, that I was going to stick on my Ripper, but it don't fit the LG Forks !?! However I tried my Tuf Neck and it fits fine, the Tufneck shaft is narrower than the Sugino,.......are there two sizes ? 7/8th's and 13/16th's

Please help....., am I losing the plot ?

Matt

Stodgy · « **Reply #1 on:** June 28, 2007, 12:27 PM »

There are definately two sizes, but i've only just found this out.

I sold an SR stem on the bay and I had a question from a buyer asking if it was the skinnier size, sure enough it was, but it was marked in mm rather than inches.

Learn something new each day.

brass monkey! · « **Reply #2 on:** June 28, 2007, 12:37 PM »

Quote from: Stodgy on June 28, 2007, 12:27 PM

There are definately two sizes, but i've only just found this out.

I sold an SR stem on the bay and I had a question from a buyer asking if it was the skinnier size, sure enough it was, but it was marked in mm rather than inches.

Learn something new each day.

me too Dave.....

looks like i'm in the market for another stem now......

bodamus · « **Reply #3 on:** June 28, 2007, 12:50 PM »

There are different size Stem shafts I had a Tuf Neck that was the narrower 13/16 and had to use a shim on it. Had an early Gold Suntour Stem that the shaft was too fat to fit my Kuwahara Forks aswell.

bodamus

SaMAlex · « **Reply #4 on:** June 28, 2007, 12:58 PM »

There are 2 main shafted stem sizes.

BMX (USA) 21.1mm
"MTB" (Euro?) 22.2mm

Most shafted BMX stems are 21.1mm but some BMX style stems are/were avalable in 22.2 (ie Sugino and SR).

Hope that helps.

brass monkey! · « **Reply #5 on:** June 28, 2007, 02:50 PM »

thanks Gents, I have learnt something today !

animal · « **Reply #6 on:** June 29, 2007, 05:11 PM »

I to have had this problem, tuff neck stem was tight in landing gear forks but lose in my MRD forks, cut up a carling can and used in as a shim

Didn't realise there are different sizes, just thought MRD forks were a duff size as had the same problem bitd. Does that mean all stems come in a metric and imperial fitment?

login_user · « **Reply #7 on:** July 05, 2007, 01:55 PM »

Quote from: S&MAlex on June 28, 2007, 12:58 PM

There are 2 main shafted stem sizes.

BMX (USA) 21.1mm
"MTB" (Euro?) 22.2mm

Most shafted BMX stems are 21.1mm but some BMX style stems are/were avalable in 22.2 (ie Sugino and SR).

Hope that helps.

Fook

i've got one of those bigger Sr stems and its fooking useless.