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On the track, finally http://ducatittandf1.com/viewtopic.php?f=23&t=5539 |
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Author: | TT1-F1 [ Fri Sep 28, 2012 2:29 pm ] |
Post subject: | Re: On the track, finally |
Looks nice, is the fork not a little bit short, it looks so low on the front side? Jarno |
Author: | Carlo [ Sat Sep 29, 2012 5:33 pm ] |
Post subject: | Re: On the track, finally |
Hello, I'm Carlo, your bike is very beautiful, I do endurance races with a bike like that, I do not want to teach anything, but my friend Lou, rightly said that the bike is very low in front, but I would think that the 'rear shock absorber is too long wheelbase, and he can cause the problem that when expedite, the swing arm rear tends to open up even more, since it has a few degrees past alignment with the ground, then, in turn, does not work the rear shock absorber, since the transmission chain pulling forward, does open the swingarm ascillante, pushing the upward motion, and making the hydraulic rear suspension useless. I tried to say has a very complicated thing for my terrible English. Sorry but I do not want to teach anyone anything, it's just my passion for DUCATI that makes me speak. Ciao Dall'Italia. Carlo |
Author: | 618F1 [ Sun Sep 30, 2012 12:40 pm ] |
Post subject: | Re: On the track, finally |
Check your messages for a PM about a Palmer tank. MikeV |
Author: | Geoff [ Tue Oct 23, 2012 3:17 pm ] |
Post subject: | Re: On the track, finally |
Yes, the 916 fork is quite a bit shorter than the 40mm FI, something like 2 inches. In reality, the swingarm angle is not as bad as it appears in the photo. The fork is off a 916, length is 27-1/2inches. Triple clamps are belt 900SS with about 30mm offset. I measured the Forcelle Italia as 29-5/8 inch length. So yes I am low in front. Using my cheap protractor, with the top of the fork 5mm above the top of the clamp, fork rake is 24 degrees. Swingarm angle is 12.5 degrees which is with the shock length set to the middle of its adjsutment. I haven't calculated trail yet. With this setup, I had no stability concerns. What I did notice was significant stand-up on the brakes, which I did not expect with the reduced rake. The caveat is that I was riding on a very smooth track. I'm open to any and all input on geometry. I may make a gull wing triple clamp to extend the front, or look at a fork extension like Ed Milich makes if I need to get the front ride height up. With the shock length at its minimum, I can get swingarm angle down to about 11 degrees, with the current fork length. |
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