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Ten millimeters

post #1 of 12
Thread Starter 

 I switched the stem on my bike today from a 100mm to a 90mm. I didn't think I'd be able to tell a difference, but I had both stems and it couldn't hurt to try. I like the Giant a lot, and love the traction of the rear wheel, but feel that the bike pushes in tight corners. 10mm less stem let me put more weight on teh front tire and made the bike corner quite a bit better. I think technique will play a role too. If I lean the bike and countersteer more, it turns better too. I'm gonna need knobbier tires though, my Maxxis Crossmark/Schwalbe Racing Ralph combo barely have sideknobs. Time to go tire shopping.

post #2 of 12

Yeah, It can really make a difference. You probably already know these things but....

 

The total length from seat center, to stem center, is what really matters. You could possibly get even more front tire pressure by shifting the seat forward, or a low rise stem/bar. (If thats what you want.) If you have a laid back seatpost, you can swap to a straight one. Or, possibly a longer seat to apply pressure with your hip adductors.

 

The Michelin AT tires (also known as tyres) are worth a look. : )

http://two-wheels.michelin.com/2w/front/affich.jsp?codeRubrique=2092004115833&codePage=2092004115833_13092004172755&lang=EN

 

I'm still wondering about that 6 inch travel bike vs. dual squishy 29er.

post #3 of 12

Panaracer 2.4 mounted tubeless really a 2.5 and had huge big lugs. Rear tire get a 2.35 Blue groove or 2.35 holy roller. disregard weight, they will roll faster than 2.1 on XC trails.

 

FYI shorter Stems matter alot, I run 90 degree on both my bike I wouldnt not go any longer. A lower riser stem while putting more weight on the front will actually make the bike harder to decend on. hence why any DH worth his salt runs a direct mount stem.

 

shorter stems and wider handlebars are the closest you can come to buying skills on a mountian bike.

post #4 of 12

http://www.pricepoint.com/detail/12674-320_PANFR4-3-Parts-73-Tires/Mountain/Panaracer-Fire-FR-Tire.htm

 

those are sideknobs. :D

 

these are a great rear tire as well and should clear you frame but just barely

 

http://www.pricepoint.com/detail/14252-320_MAXHR5-3-Parts-73-Tires/Mountain/Maxxis-High-Roller-Tire-26-x-2.35.htm

 

I run tons of different rear tires on my MTBs(blue groove/nevegals/Fire XC/Hutchison Pyrinnha/ and Holy Roller) but the 2.4 Panaracer Fire FR is hands down the fastest front tire I have ever ran. Makes the overall diameter larger(as large as some 650bs in fact) so its roll over stuff easier, huge volume so the tire doesnt roll around rocks and roots as much as it envelops them, big contact patch that excells at cornering, great sideknob that piece any soil, and burly as all hell. Plus the center knobs are actually fast. Like really fast.

 

 

post #5 of 12

If you are happy with Racing Ralph and want more knobs, try Rocket Ron. It's same 2.25 and approximately 70g lighter then RR. I'm riding Rocket Ron (front)/Racing Ralph (back) combo this year, and it works great... even in a bit wet where Racing Ralph was anything but good.

post #6 of 12
Thread Starter 

 

Quote:
Originally Posted by BushwackerinPA View Post

 A lower riser stem while putting more weight on the front will actually make the bike harder to decend on. hence why any DH worth his salt runs a direct mount stem.


Beleive it or not there is a trend in DH going toward lower front ends. Bar rise is getting lower (you'll hardly ever see a 2.5" rise anymore) and there are even super-wide flatbars for DH now. I want a direct mount stem for my DH bike though so that my bars won't twist when I wreck... Thinking about the Strairlie stem which is only 28mm long.

 

The Specialized's bars were 27.5" above the front axle. The Giant out of the box had them 29.5" above (RF Next SL bar with 3/4" rise). I moved all of the spacers to the top and flipped the stem and am stillat 28.5". If I want to go lower I need a new headset and/or flatbars. I also may need to get a straight seatpost, but need to break out the pendulum and figure out where I want to be.

post #7 of 12

 

Quote:
Originally Posted by epic View Post

 I switched the stem on my bike today from a 100mm to a 90mm. I didn't think I'd be able to tell a difference, but I had both stems and it couldn't hurt to try. I like the Giant a lot, and love the traction of the rear wheel, but feel that the bike pushes in tight corners. 10mm less stem let me put more weight on teh front tire and made the bike corner quite a bit better. I think technique will play a role too. If I lean the bike and countersteer more, it turns better too. I'm gonna need knobbier tires though, my Maxxis Crossmark/Schwalbe Racing Ralph combo barely have sideknobs. Time to go tire shopping.


Funny that you should bring this up.  This as well as some seat post adjustment are things we're discussing to adjust Terry's new mt bike.

At the moment, it puts him over the handlebars which could be baaaaad!

post #8 of 12

 

Quote:
Originally Posted by primoz View Post

If you are happy with Racing Ralph and want more knobs, try Rocket Ron. It's same 2.25 and approximately 70g lighter then RR. I'm riding Rocket Ron (front)/Racing Ralph (back) combo this year, and it works great... even in a bit wet where Racing Ralph was anything but good.


lighter isnt faster - it really is a tough pill to swallow. but both of those tires IMO are over priced crapolo. There has even been people getting sidewall pinch on these tires which at 60+ a piece is unacceptable.
 

 

Maxxis, Panaracer, Hutchison, and Kenda all make great tires for about half the price of the scwalbe.

post #9 of 12
Thread Starter 

The Schwalbe tires are really nice and I've had nothing but good luck with them, but the pricing has truly gone through the roof with them.

 

I think I'm gonna try some Contis. 

post #10 of 12

you can also try inverting the stem -- stem can positon the handlebars up or down.  mine is upside down on my road bike ... I like low handlebars.  =)

 

Team in Training -- El Tour de Tucson 2009

 

(for The Leukemia and Lymphoma Society)

 

pages.teamintraining.org/ma/tucson09/klkaye -- fundraising

klkaye.bostonbiker.org/ -- training blog

post #11 of 12
Thread Starter 

 

Quote:
Originally Posted by klkaye View Post

you can also try inverting the stem -- stem can positon the handlebars up or down.  mine is upside down on my road bike ... I like low handlebars.  =)

Already did.

post #12 of 12

 

Quote:
Originally Posted by BushwackerinPA View Post

 
lighter isnt faster - it really is a tough pill to swallow. but both of those tires IMO are over priced crapolo. There has even been people getting sidewall pinch on these tires which at 60+ a piece is unacceptable.

I know that lighter isn't faster. Rocket Ron is slower tire then RR, even if it's lighter. But it has better grip, especially on a bit wet surface.

I agree about over priced part, but not about crapolo part :) I never had any problems with them, and I'm running them for quite few years (mostly Racing Ralph till now). They don't last really long (one season is max for me), even though they don't show almost any usage, but grip just isn't same anymore. But I didn't get any problems. Sure I get flat from time to time, but I got it with every tire I was using till now.

As far as price goes, I get them for about 35eur, which is about same as Michelin. Maxxis, Conti or any other tire in same category. Afterall, both Racing Ralph and Rocket Ron are in category of racing tires, and none of them, no matter what company it is, aren't cheap.

But yes I also heard prices for Schwalbe are different in USA, then they are here on this side of ocean.

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