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DavidGuerra mikekazimer's article
Feb 16, 2015 at 15:45
Feb 16, 2015
First Look: OneUp Components DH Block
There is another advantage in keeping the extra range of 9 or 10 speeds for dh, which is that one may use bigger rings up front. I grant that I am not a "spinner", but it seems awfully strange to see dh bikes with 38 teeth rings when I can even max out a 44 teeth on a (moderate) climb. The use of these small rings up front started rising as the trend of using road cassettes for dh started spreading, as the biggest cog of a road cassette was often too heavy to use with a decently sized ring up front. So the end result was that the psychological illusion that using a road cassette would give you more speed because of its heavier range, ended up reducing the whole drivetrain to a lower multiplication ratio, and to a lower possible speed. So that now a downhiller has to have a furious-rabbit spinning pace to catch up with a cross country bike on a downhill.
DavidGuerra mikekazimer's article
Feb 16, 2015 at 15:11
Feb 16, 2015
First Look: OneUp Components DH Block
The use of road cassettes for dh seems to me like the stupidest thing ever, absolutely incompreensible, and it boggles my mind how even bike manufacturers include them on their bikes. If you want to use a shorter chain, just do it, no need of using a road cassette and having to shift two or three gears at a time. Just limit the derailleur and use only the smallest cogs. No need for this device either, the bigger cogs do the same job as this, preventing the chain from moving into the spokes. Me, I actually prefer to keep the chain long, it's not really a problem, and the extra range can be useful at times. Besides, when going down I won't likely shift into the bigger cogs, so the chain won't be near the spokes anyway. And as for 7-speed drivetrains, they are only an advantage if the hub moves the spokes into the place where the bigger cogs used to be, centering the rim and equalizing spoke tension on both sides. If this is not the case, the only thing 7-speed does is create an extra gap into which the chain might fall.
DavidGuerra paulaston's article
Feb 12, 2015 at 7:32
Feb 12, 2015
Pole Rinne Ylä - Review
"If you exceed 100% of AS you are extending the swingarm by every pedal stroke". What? Pedaling will never ever extend the swingarm. Depending on the pivot position the effect will either be neutral, or it will push it either up or down, to compress or de-compress the shock. But a pushing action can't possibly result in an extending action. Zero interference of pedaling with the suspension occurs when the pivot, either physical of virtual, stands on the chain line or on its virtual continuation. With this design, the force exerted on the chain will squash the suspension. The suspension will absorb a part of the pedaling force and when it releases it, the effect will not translate into further forward motion. So the way to pedal with this bike is to keep the pedaling force constant so that the shock remains compressed. As soon as it de-compresses, you will lose energy again when first pushing the chain, as you will have to compress it again before the full pedaling force reaches the rear wheel. Now, there may be some advantages to this design, but pedaling efficiency certainly isn't one of them.
DavidGuerra geebeebee's photo
May 12, 2014 at 7:01
May 12, 2014
I see a derailleur, but where the hell is the cassette? Is it even worth having a derailleur if you're only going to shift between such similarly smll cogs?

DavidGuerra RichardCunningham's photo
Mar 5, 2014 at 13:40
Mar 5, 2014
What is a terrible idea and why?

DavidGuerra RichardCunningham's photo
Mar 5, 2014 at 8:25
Mar 5, 2014
would... have

DavidGuerra mikelevy's article
Mar 5, 2014 at 7:53
Mar 5, 2014
First Ride - SRAM Debuts DH Specific 7 Speed Drivetrain
Why not a 11-20 5 speed, by taking the top 4 off a mtb cassette? Is there a need for such close ratios?
DavidGuerra mikelevy's article
Mar 5, 2014 at 7:48
Mar 5, 2014
First Ride - SRAM Debuts DH Specific 7 Speed Drivetrain
I have always thought that running road cassetes on downhill bycicles is stupid, and the existence of this product confirms this opinion. Just like they say, there is no need for close ratios on downhill. You don't need the bigger cogs of a mtb cassette either, but no one is forcing you to use them, you can just use the 7 smaller ones. Which, minus the weight difference, is exactly the same as running this 7-speed setup. The real advantage of running a 7-speed cassette though, is that a wider hub can be used, helping to center the rim and equal spoke tension. Like Specialized is doing on their Demo bikes. However, this cassete is meant for a regular hub and just leaves the space where the cogs used to be unused. I'm still waiting for the real 7-speed downhill standard cassette and hubs.
DavidGuerra RichardCunningham's article
Feb 21, 2014 at 15:04
Feb 21, 2014
Nico Vouilloz Injured in Training Accident
Gotta agree with that. It's a case of fashion against function.
DavidGuerra RichardCunningham's article
Feb 21, 2014 at 14:57
Feb 21, 2014
Nico Vouilloz Injured in Training Accident
XC can be dangerous if, like me, you don't gain a lot of ground on the climbs, but do on the descents, and try to overtake there. For a certain period all of my falls were happening when doing crazy off-course lines to try to overtake someone on a cross country race.
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