Here's my 08 Moment with 36 TALAS fork. I'm running X0 shifters / derailleur and XTR crankset. The wheels are King / Mavic. I think it weighs about 31.5 lbs, if I remember correctly.
Kokopelli Racing
"Curb drops to flat, or curb drops to transition? There's a BIG difference there." Qfactor03
Hey all, I've been diggin' the Moment for a while and have recently been seriously considering one to replace my Chumba XCL. It's a nice bike that I'm not totally dissatisfied with, but I've broken the seat stay once already... guess I'm looking for a bit more.
I have a quick question for all you running 36s out there. What's the BB height when equipped with this fork? I may end up running a coil shock matched to a new Manitou Travis 150 that I have, but I'm a little concerned because of the geometry numbers listed on the website with what I would imagine is a 32? Let me know, thanks!
The website states 14.2 inches with a 150mm fork. The extra 20mm axle crown height of the 36 raises it another .2inch.
On paper 14.4 inch is really high for this amount of travel but in reality it does not seem to be detromental to the cornering of the Moment.
Of course the height/profile of the tyres makes a difference and the amount of sag makes a big difference too. I tend to run a lot of sag on my bikes (30% on My Moment), I like the way the rear tracks the ground when set up that way. In the corners the bike compresses for loads of grip and stability.
Thanks for the quick response Nsynk! It's interesting that you say the geo numbers are measured with a 150mm fork because what I see on the website is a static fork length of 520.7mm A2C. The A2C length on my Travis is the same as most 160mm forks at 545mm which is what causes my concern.
Seems to me that increasing the fork length by nearly an inch would raise the bottom bracket by a good half inch with changes in the head & seat tube angles of about 1 degree. You raised a good point about sag and tire profile, but with my considerations I think any other changes to these numbers would be negligible.
So with a presumed static BB height of ~14.7" and running roughly 28-30% sag, I should get a sagged BB height of about 13.7"... does that sound about right? This would be just under an inch higher than my XCL, and while not all bad, it would take some getting used to. I'll tell you one thing, pedal smacks on technical climbs would NOT be missed for sure!
After calculating it I came up with about 1.8", so yeah you're right. Two tenths would be splitting hairs, and BTW Manitou for whatever reason measures their shock stroke at 56mm. Sounds even better yet!
don't worry about bb height with our travis. 1 inch up front doesn't translate into 1 inch increased bb height, more likely less than 1/2 inch, which shouldn't cause any concern.
I don't think the BB would be raised by as much as 1/2 inch probably 1/4 to 1/3 inch. If you think that the pivot point for rasing the front is actually the rear axle you could work it out using trigonmetry. With the points being the rear axle and the original top of the crown and the new top of the crown. The crown top points are only an inch apart and a long way from the point at the axle. Creating a long very thin triangle. The height of the triangle as it passes the bb will be the increased height of the BB. I recon the BB height is more like 14.4 , Which is still 1/2 inch to 3/4 inch higher than most AM bikes with 6'sh inches of travel.
Sagged would be about 13.5, pretty ball park I think
As an aside. I have considered running a 190 x 57 mm shock. They used to be quite common (Orange Patriot fro example). That would lower the BB by 3/4 inch and slacken the angles by 1 1/2 degrees. I doubt the warranty would remain valid but it might be worth it for the excellent geometry.
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Originally Posted by dbmnk
