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TDM Top Yolk/Triple Clamp
Posted: Thu Mar 01, 2012 12:15 am
by Beardyweirdy
Does anyone know it the TDM Top Yolk will fit with a TRX Stem and Bottom Yolk?
I thought I'd read on here that it did, but it seems a bit to easy and thought I'd check.
I'm trying to fit some Jota 'bars and avoid paying through the nose for a CNC set up...
ta
k
Re: TDM Top Yolk/Triple Clamp
Posted: Thu Mar 01, 2012 11:33 am
by cal
Pretty sure that no model of tdm will fit as they are 43mm and trx are 41mm The early tdm ones I think were smaller at 41mm i am not sure how far apart the spacing for the fork legs are and also for the steering tube offset, I had a look at using a tdm for mine but was told it was a no go.
You would think though that there is a top yoke off of another bike somewhere that would fit, even if it wasn't a yam one.
Re: TDM Top Yolk/Triple Clamp
Posted: Thu Mar 01, 2012 12:16 pm
by jjmoto
fazer 600 top yoke?
Re: TDM Top Yolk/Triple Clamp
Posted: Thu Mar 01, 2012 12:48 pm
by Kayla
jjmoto wrote:fazer 600 top yoke?
No
I think a late XJ900 yoke might be a candidate though.
edit- I've just bought one for £20 all-in*, I'll let you know if it fits when it arrives
*edit again- cos if it doesn't it's a cheap gamble and I can easily make it fit something else

Re: TDM Top Yolk/Triple Clamp
Posted: Sat Mar 03, 2012 1:12 pm
by Kayla
Okey dokey, the XJ900 yoke doesn't work, the pitch is 210mm and the offset is 25mm (I think). Meh. Back to the drawing board

Re: TDM Top Yolk/Triple Clamp
Posted: Sat Mar 03, 2012 10:54 pm
by fung
so that pitch and offset would give what rake and trail ?
Cheers
Fung

Re: TDM Top Yolk/Triple Clamp
Posted: Sun Mar 04, 2012 9:26 am
by Kayla
fung wrote:so that pitch and offset would give what rake and trail ?
Cheers
Fung

The yoke isn't raked so the standard (25 degrees?) rake would stay the same, but if you were to use both XJ yokes the trail would increase-
which would make the bike more stable in a straight line and need more effort to turn. My bf's Buell has a really steep rake (22 degrees) and a really small offset (20mm I think), whereas older bikes (70s-80s Yam TZs) had relatively relaxed rakes and large offsets.