Hi I am a little green with the terminology but I am fitting a set of upside down forks to my Z900 and have found a couple of engineering companies that can make the custom yoke set for my bike but they are asking me for the offset for the forks from the head stock to the fork legs I want to have??
this means not a lot to me but I see you have fitted non stock forks to your bike, what distance am I looking for please?
if you can help that would be great
regards
John
Hello Guest User,
Please feel free to have a look around the forum but be aware that as an unregistered guest you can't see all of it and you can't post.
To access these 'Registered Users Only' areas simply register and login.
Please feel free to have a look around the forum but be aware that as an unregistered guest you can't see all of it and you can't post.
To access these 'Registered Users Only' areas simply register and login.
fork offsett for custom yokes
Moderators: KeithZ1R, chrisu, paul doran, Taffus
Zed1015's PM may have covered this but I have just fitted custom yokes to a Z900. My bike has a 17" front wheel and I guess yours does to, as it has USD forks. With a smaller wheel, you need less offset than standard to avoid reduced trail and possible instability. The standard offset is 60mm which gives a trail of about 97mm with a 19" front wheel.
I calculated (with assistance from Harris) that a 17" wheel needs about 46mm offset to keep the trail constant assuming no change to the angle of the front forks. I bought yokes from Japan which have a 40mm offset, which gives slightly more trail than standard with a 17" wheel. This should in theory make the steering slower but the reduced inertia of modern wheels will partly counter this.
BTW the forks I have fitted are 800mm long when fully extended. I used Sculpture/Sanctuary yokes which are expensive but beautifully made and come complete with lockstops, taper roller bearings, handlebar brackets, mounting holes for the brake splitter, even the option of using a standard steering lock. I don't know how much you are paying but I would only use a UK firm if they are a lot cheaper than Sanctuary.
I calculated (with assistance from Harris) that a 17" wheel needs about 46mm offset to keep the trail constant assuming no change to the angle of the front forks. I bought yokes from Japan which have a 40mm offset, which gives slightly more trail than standard with a 17" wheel. This should in theory make the steering slower but the reduced inertia of modern wheels will partly counter this.
BTW the forks I have fitted are 800mm long when fully extended. I used Sculpture/Sanctuary yokes which are expensive but beautifully made and come complete with lockstops, taper roller bearings, handlebar brackets, mounting holes for the brake splitter, even the option of using a standard steering lock. I don't know how much you are paying but I would only use a UK firm if they are a lot cheaper than Sanctuary.
Who is online
Users browsing this forum: No registered users and 22 guests