Chris-CJ
Well-known member
Read about this unusual fork design that may even make it into production.
The engineering is fine, but the looks?
The engineering is fine, but the looks?
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Girder forks with a new twist!
- Thread starter Chris-CJ
- Start date
I like it. CFMOTO seems to be pushing hard into the market.
TK4
Well-known member
The general disadvantages to girder (and springer) front ends is weight, as well as needless complexity in construction.
Honda and others tried to create rising rate telescopic forks in the 1980s, they were not generally received favourably.
An answer to a question nobody asked, except as a styling exercise.
Honda and others tried to create rising rate telescopic forks in the 1980s, they were not generally received favourably.
An answer to a question nobody asked, except as a styling exercise.
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I think that's a visual side-effect of the camera angle and fender shadow. The bottom of the tire looks normal in the front angle shot.
That horizontally mounted shock causes some issues. I can think of a few ways to turn the force 90 degrees and none of them are things that are very robust in the space you have there.
Cool to look at but way too many drawbacks to ever take off.
Heavy, going to be expensive, and overly complex which is going to cause significant wear or excessive maintenance.
Don't you need to change directions twice... up and down forks > to fore and aft > to left and right... on both sides... that's 4 bell cranks... and that's a lot of stiction, that can all be eliminated by mounting the shock in the tradition position
We would need to see a pic of the back of the fork.... it seems they have left that shot out.
I'm thinking this is more of a concept bike to show off your engineering and vision. I would be very surprised if this ever saw production.
DeCoster said That the Ribi linkage fork was the best fork he'd ever used (at the time). You could dial in the amount of anti-dive and linkage rate the fork had, amongst other improvements (stiction, unsprung weight).
He liked it so much he demanded Honda buy the rights to it when he left Suzuki to sign with them. They built an updated single shock version, but it never made it past the works stage. Cartridge design and an improvement in progressive valving for telescopic forks rendered the costly design obsolete.
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TK4
Well-known member
DeCoster said That the Ribi linkage fork was the best fork he'd ever used (at the time). You could dial in the amount of anti-dive and linkage rate the fork had, amongst other improvements (stiction, unsprung weight).
He liked it so much he demanded Honda buy the rights to it when he left Suzuki to sign with them. They built an updated single shock version, but it never made it past the works stage. Cartridge design and an improvement in progressive valving for telescopic forks rendered the costly design obsolete.
I was referring to things like TRAC (Honda), as well as Suzuki, Yamaha and Kawasaki all having their own permutations.
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