Increasing axle to crown
04-11-22, 06:21 PM
#1
Full Member
Thread Starter
Increasing axle to crown
So, my Baselines fork has an axle-crown of 395mm and rake of 50mm. Frame is 74st/71ht angle.
Besides slacker angles how do you think swapping the fork for one with a 410mm axle/crown and 53mm rake would affect handling?
Besides slacker angles how do you think swapping the fork for one with a 410mm axle/crown and 53mm rake would affect handling?
04-12-22, 08:27 AM
#2
Senior Member
Join Date: Jul 2010
Location: Michigan
Posts: 4,863
Bikes: too many of all kinds
Mentioned: 35 Post(s)
Tagged: 0 Thread(s)
Quoted: 1147 Post(s)
Liked 415 Times
in
335 Posts
I do that all the time - in a fashion. I like going fat on my front tire, and may run 54mm front, 38mm rear.
Generally, doing this adds more trail (effectively reducing the head tube angle although in my case I'm increasing the tire diameter which increases the trail too), and makes the bike easier to ride in challenging conditions - makes the bike a little more stable.
increasing the rake is going to reduce the trail a bit, so in effect they counter ballance each other a little (although that change in rake is hardly noticeable).
you can go to a trail calculator and play with the numbers - Bicycle Trail Calculator | yojimg.net
Generally, doing this adds more trail (effectively reducing the head tube angle although in my case I'm increasing the tire diameter which increases the trail too), and makes the bike easier to ride in challenging conditions - makes the bike a little more stable.
increasing the rake is going to reduce the trail a bit, so in effect they counter ballance each other a little (although that change in rake is hardly noticeable).
you can go to a trail calculator and play with the numbers - Bicycle Trail Calculator | yojimg.net
Likes For chas58:
04-12-22, 09:32 PM
#3
Junior Member
Join Date: Jul 2020
Location: New Hampshire
Posts: 196
Bikes: 1984 homemade 531SL road bike; 1988 Ritchey TimberComp; 1997 Nashbar tandem; 1998 Kona Explosif; Specialized Epic, Scott CR1 Pro; Salsa Beargrease; Curtlo custom Tandem, Curtlo custom S3 steel gravel bike.
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 67 Post(s)
Liked 49 Times
in
37 Posts
Rule of thumb is 10 mm increase in axle-crown will decrease head angle 0.5 degrees. This will increase trail about 4 mm. You are then taking away 3 mm of trail with more fork offset so the difference is minimal.
Likes For Chilepines:
