[DHSMONO]

Hallo

I Want To Knoe What Is The Best Gear Ratio That I Can Get For Dh Bike
38t 12-25
40t 12-32
42t 12-32

I Buy The Diablous Crank And I Got 38t...
Any Recomandations About The Rear Ratio Or Sould I Change The Frond Ring????( Please Try To Avoid Of That)

And Another Thing Please. Does The Ec70 Carbon Seat Post Id Good For Dh? Or Is It To Weeky.?

Thanks Alot Guys.

 

[Manic]

mtbaction they said they broke that seatpost twice, they gave it a 1star, out of 5...

 

[.WestCoastHucker.]

well, i heard.....

 

[yangpei]

38T is okay, don't use EC70 for DH

I have a 38T in front and it woks fine for me. I chose this because I can still do some pedalling and fireroad climbing if necessary. In some faster DH courses, you may want to run a bigger front ring. I had the Easton EC 70 post on my xc bike (Intense Spider) and got rid of it after 2-3 rides. I don't think it's a good choice for DH. Stick with alum - I like Thompson.

 

[jung4g]

I've got a 42 front with Ultegra 12-25 in back. Works great. 42/25 is fine for urban and uphill (out of saddle, but that's what lifts are for). And 42-12 is as fast as we should need, at 3.5:1. If you're going faster than that DH, just hang on and enjoy the ride, no need to pedal at that point.

I prefer the smaller cassete because I can run a slightly shorter chain allow the derailleur to tension more (105 Derailleur) reducing the need for a tensioner/retainer. I still run a modified retainer, but I have no need for more chain tension, and I've never dropped a chain.

This is on a 44lb. KHS FR-1500 w/ Junior T., Saint Cranks, etc...

Oh, and go Thomson, absolutely no Carbon in the DH scene, IMO. Carbon scares me anywhere other than a road bike. Thomson won't bust, carbon will, it's a fact.