FF: Forks Girdraulics........Factory specs on trail.......

[greg brillus]

Hi there all, does anyone know the factory specs for trail on the Girdraulics in the solo and sidecar positions......... I have a friend who is setting up a road racing outfit and wishes to know what the specs are.........Many thanks and cheers for now......... Greg.

 

[Oldhaven]

Chapter V of the Riders Handbook. 3-1/4; 2-1/2

Of course it varies quite a bit as the forks work so I expect this is at normally laden height, and the JE steering mod changes all that.

 

[Ken Tidswell]

The factory works sheets says the standard solo trail is 3¼ inches and sidecar is 2½ inches.

 

[timetraveller]

When braking hard with the standard geometry, or lifting the front wheel off the ground, the trail increases to about 5 inches. To check this put the bike on its front stand and look at how close the lower front mudguard stay gets to the mag cowl.

 

[deejay499]

Hi there all, does anyone know the factory specs for trail on the Girdraulics in the solo and sidecar positions......... I have a friend who is setting up a road racing outfit and wishes to know what the specs are.........Many thanks and cheers for now.........

Don’t forget that the trail changes with smaller wheels.

 

[timetraveller]

No disagreement here but a note on something I have often come across which seems to cause confusion. Ignoring a few tenths of an inch a 20" wheel with a 3" section tyre has the same rolling diameter, 26", as a 19" wheel with a 3.5" tyre. No change of trail there. However, a 16" sidecar outfit front wheel with a 4" section tyre will have about a 24" rolling diameter.

 

[greg brillus]

Thanks for the input guy's.......just been trying to find some info to help out a chap with a road racing outfit that has had a few handling issues. But there might be more to the story, and i have not seen the machine to know exactly what is going on.........Cheers........... Greg.