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Head tube angle/increased fork travel
Alright, my bike currently has a 70mm head tube angle with 63 mm travel on
the fork. I mentioned in another thread that I was thinking about getting a new fork like this one: http://makeashorterlink.com/?J2BC12E05 or another 80mm travel fork (any suggestions for a nice price--marzocchi maybe). Anyway, someone mentioned that most people find 71 degrees to be about right for the head tube angle. Of course, mine is already off that mark by 1 degree. Does anyone know how much the above fork would throw off the angle even more? Is there any way at all to counteract that effect without having a frame builder replace the head tube. If not, then does anyone have any other suggestions? Thanks again, Alan McClure |
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Head tube angle/increased fork travel
"Alan McClure" wrote:
Alright, my bike currently has a 70mm head tube angle with 63 mm travel on the fork. I mentioned in another thread that I was thinking about getting a new fork like this one: http://makeashorterlink.com/?J2BC12E05 or another 80mm travel fork (any suggestions for a nice price--marzocchi maybe). Anyway, someone mentioned that most people find 71 degrees to be about right for the head tube angle. Of course, mine is already off that mark by 1 degree. Does anyone know how much the above fork would throw off the angle even more? Is there any way at all to counteract that effect without having a frame builder replace the head tube. If not, then does anyone have any other suggestions? The change from a 63 to 80mm shock (assuming the ride height will change by ~15mm once sag is factored in) will be between close to another degree (probably about 0.7-8 degrees, depending on a lot of minor things like wheelbase). That would put your head tube's effective angle at 69 degrees - pretty slack, but not horribly so. I doubt you'll find the difference all that drastic though. If it's a stiffer, better fork the result will be worth it. Mark Hickey Habanero Cycles http://www.habcycles.com Home of the $695 ti frame |
#3
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Head tube angle/increased fork travel
Alan McClure said...
Alright, my bike currently has a 70mm head tube angle with 63 mm travel on the fork. I mentioned in another thread that I was thinking about getting a new fork like this one: http://makeashorterlink.com/?J2BC12E05 or another 80mm travel fork (any suggestions for a nice price--marzocchi maybe). Anyway, someone mentioned that most people find 71 degrees to be about right for the head tube angle. Of course, mine is already off that mark by 1 degree. Does anyone know how much the above fork would throw off the angle even more? Is there any way at all to counteract that effect without having a frame builder replace the head tube. If not, then does anyone have any other suggestions? Thanks again, Alan McClure I just went from 80mm travel to 125mm travel when I installed my Fox Vanilla fork and I love the geometry change. One reason I bought the Fox was that it converts between 80, 100, and 125mm travel. I figured that I would have to knock it down to 80 to get good handling, but now I see no reason to bother with it. When I was having problems with my stock 80mm fork, I talked with the guy who designed the bike and he said that they run them at 105mm all the time and they feel great. This conversation came up when I arranged to trade up my defective 80mm fork for a Duke SL U-Turn which has a travel range of 63-105mm. My experience agrees with his. I do have the sag set to the maximum recommended, and I may find out that there may be times when less travel would be better, like on challenging uphills, but there are advantages and disadvantages to everything. It's all a matter of taste, and the differences can be subtle. I don't think you should lose any sleep over the difference between a 63 and 80mm fork. |
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