Seeley MK3 rake and trail values

Hi All,

Does anyone know where I can find that information?

Thanks a lot & Merry Xmas,

Laurent

It will depend on shock length, fork length and yoke offset. So I suspect it won’t be easy getting ‘one’ answer...

Hi Laurent , it seems that it is 27° or 28°(??).......after that the trail will be as said FAst Eddie according to the yole offset and shock/fork lenght.

That might be some kind of nominal rake in a jig, but in the bike it’s dependant on fork and shock length. Jack up the back and drop the forks and you steepen the rake, and vice versa, etc.

A while back, Kenny Cummins had the specs of his Seeley on his website. They were very similar to my own. I recently tried to find Kenny's stuff again, but the web page now redirects to his mechanic. With my Seeley, the rake when the bike is unloaded and stationary is 27 degrees. My fork yokes have about 35mm of offset. The rear shock length and spring rating are critical to the way the bike steers when accelerating around and out of corners. If you have a look at Dave Moss's videos about suspension on modern bikes, you will see what I mean.

I think the shocks on the rear of my Seeley have 80 pound springs and I weigh about 13 stone. If I wind them up, it changes the handling so the bike self-steers less when coming out of corners. If you can get this right, your bike will be much more competitive. You can brake into tight corners, then get straight back onto the gas without rolling an inch in between. In more open corners, the bike will be a blur. With a Commando motor, it is useless doing point and squirt. You have to win in the corners - turn under and come out faster. If you get the geometry right, you will find the bike stays slightly more vertical in corners as it turns.

Hi Gents,

Many thanks for your replies. Of course these values depend on the height, offset etc... but I think that the friend who asked me the question was referring to a "nominal" rake.

L.