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steering feel with different headtube angles(9 posts)

steering feel with different headtube angleseflayer
Dec 27, 2002 8:02 PM
All other things being equal, could you describe the difference in steering feel of two bikes; one with a 73 degree head tube and the other with a 74 degree head tube? Would it be particularly noticable?
re: feelings... the ex says I gots noneAkirasho
Dec 27, 2002 8:07 PM
... it's actually hard to keep all other things equal, but in general, the steeper the headtube angle, the faster the steering response... you rarely see a 74 degree on a road frame.

We abide.

Remain In Light.

Be the bike.
Not exactlyMR_GRUMPY
Dec 27, 2002 8:25 PM
Without checking other manufactures, I know that Waterford uses a 74 head angle on 55cm and up frames.
standard geometry on Sevens is 74 head tubeeflayer
Dec 27, 2002 10:00 PM
Even though you don't see 74 that often, it is standard on Sevens and that's why I was asking the question.
standard geometry on Sevens is 74 head tubebsdc
Dec 28, 2002 6:17 AM
74 degree head tube angle is standard on 58cm thru 64cm Seven frames. If you look at the whole line from smallest to tallest frames, the head tube angles slowly increase and the seat tube angles slowly decrease. You'll notice this on most line of bikes. One of the reasons for this, it that it helps increase the top tube length of larger frames without creating a huge wheel base. I think whatever quickness in steering one might experience with a 74 degree head angle on a larger frame is offset by the slightly longer wheelbase and the usually longer stems used.
standard geometry on Sevens is 74 head tubeMR_GRUMPY
Dec 28, 2002 4:27 PM
If the bike you are talking about is somewhere between a 56 and a 60cm, and if the fork has a 73 rake, it will be a "race" bike, and have pretty quick steering. Not the best thing for those 5 day tours, but great for Crits and road races.
re: steering feel with different headtube anglesHeron Todd
Dec 28, 2002 8:23 AM
Head tube angle alone tells you very little. The important spec as far as handling goes is trail. This is a function of both head angle and fork offset. Head angle may be varied to affect top tube length or toe clip overlap. The fork offset can then be changed to arrive at the proper trail.

Todd Kuzma
Heron Bicycles
LaSalle, IL 815-223-1776
http://www.heronbicycles.com
At last!Kerry Irons
Dec 29, 2002 6:11 AM
As I was reading down through the responses to this post, I kept asking myself "How can these guys be talking about handling as a function of HTA without discussing fork offset?" Todd finally nailed it, as I would expect. It is the combination of fork offset (or rake) and HTA that determine the front end responsiveness of the bike. Of course, this has to be combined with wheel base, front center distance, and chainstay length to get the whole picture. Just focusing on one thing to "define" handling seems to be a common fallacy. Similar to "How does frame material X ride compared to frame material Y?"
74 to 73.5cogmaster
Dec 30, 2002 5:56 PM
I just built up a bike with a custom frame in which I went with a 74 HT to a 73.5 HT. I found the 74 to be a bit too fast for me and wanted it a little more stable. THe 73.5 HT was recommended to me and works perfect. Unless you want super reactive steering, there is not compelling reason to go 74.