6 pot caliper mod for Anti-Dive forks

[aviationfred]

This may help with the difficulty in finding good quality 16" front tires.

I spent some time at another members garage today (Shaarth). He has an XS1100 with FJ anti-dive forks. The really interesting part is that it has a 17" FJ wheel with ARASHI rotors and Hayabusa 6 pot calipers. The calipers are mounted to fabricated brackets.

The ARASHI rotors are 300mm dia. He had to remove 1/8 of an inch in diameter. OEM 298mm FJ rotors should work without trimming.

Fred

[Shaarth]

The brackets for the early anti dive forks came from brackets made for the early VMax's. They both had the same caliper bolt pattern. Probably the same calipers. I have a bit more experience with VMax's. This is my first FJj1200. And I'm still have a lot to learn. Aviation Fred has been very helpful. I got them from Sean Morley's. Sean's forgot more information about Bikes in general than I'll ever know. I talked to him. He designed them and had a shop in Texas later cut them and powder coated. I got a pair that wasn't powder coated. When  I tried to rough them up for painting I found out how hard they were. I don't know the type of stainless steel But it was hard. They will not flex. If anyone's interested about buying the adapters Talk to Sean. If enough orders together you could get them cheaper.

[FJ Flyer]

General consensus is that slapping a set of '89 or newer fork sliders and front wheel and some R1 or R6 calipers and master cylinder is the way to go.  Two advantages - you get rid of the anti-dive junk that never worked, anyway, and you get the 17" tires that are more readily available.

Almost ridiculously easy mod.

[Shaarth]

General consensus is that slapping a set of '89 or newer fork sliders and front wheel and some R1 or R6 calipers and master cylinder is the way to go.  Two advantages - you get rid of the anti-dive junk that never worked, anyway, and you get the 17" tires that are more readily available.

Almost ridiculously easy mod.

Your right. It would of been easier if I had bought a set of 89 sliders with a 17in. Tire. But I used what I already had in my garage. I took the lower half of the anti dive an threw it away and turned it upside down and built a blanking plate and had it powder coated. Then bought a 17in tire on EBay. I already had the tokico calipers. They are plentiful and cheap. Then bought the caliper adapter plate from Sean Morley. The early Vmax used the same calipers as the early FJ1200.then put it together. I don't think the 6 pot calipers will work on the early 16" wheel. Not enough clearance. Would of been a waste of time when there are plenty of 17" wheels around. What was interesting was I took off a huge amount of weight off the XS1100 front end. The XS has solid rims and are heavy. The FJ1200 has hollow rims. I'm also  putting a FJR 1300 rear swing arm, wheels, driveshaft and mono shock with a XJR fuel tank. I'm waiting for a middle gearbox spacer to be made to align the shafts together. Sorry a little off subject. The XS1100 was the Grandfather of the FJ200 and both have very tough engines.

[FJ Flyer]

Wow, you are ambitious!  Good luck, it will be interesting to see the FJR swingarm/shaft on it.

[fj1289]

General consensus is that slapping a set of '89 or newer fork sliders and front wheel and some R1 or R6 calipers and master cylinder is the way to go.  Two advantages - you get rid of the anti-dive junk that never worked, anyway, and you get the 17" tires that are more readily available.

Almost ridiculously easy mod.

Your right. It would of been easier if I had bought a set of 89 sliders with a 17in. Tire. But I used what I already had in my garage. I took the lower half of the anti dive an threw it away and turned it upside down and built a blanking plate and had it powder coated. Then bought a 17in tire on EBay. I already had the tokico calipers. They are plentiful and cheap. Then bought the caliper adapter plate from Sean Morley. The early Vmax used the same calipers as the early FJ1200.then put it together. I don't think the 6 pot calipers will work on the early 16" wheel. Not enough clearance. Would of been a waste of time when there are plenty of 17" wheels around. What was interesting was I took off a huge amount of weight off the XS1100 front end. The XS has solid rims and are heavy. The FJ1200 has hollow rims. I'm also  putting a FJR 1300 rear swing arm, wheels, driveshaft and mono shock with a XJR fuel tank. I'm waiting for a middle gearbox spacer to be made to align the shafts together. Sorry a little off subject. The XS1100 was the Grandfather of the FJ200 and both have very tough engines.

Pictures please!  A full blown project write up too if you're willing! 

[aviationfred]

The photos that I posted opening the thread are of Dale's XS1100 with the FJ forks and wheel.

[fj1289]

The photos that I posted opening the thread are of Dale's XS1100 with the FJ forks and wheel.

I want to see the whole project!  Sounds like a lot of creative use of Yamaha parts bin engineering.  We used to have a lot of that going on in the old Yahoo group.  I like seeing what people come up with and the creative ways to solve problems as they come along. 

[aviationfred]

General consensus is that slapping a set of '89 or newer fork sliders and front wheel and some R1 or R6 calipers and master cylinder is the way to go.  Two advantages - you get rid of the anti-dive junk that never worked, anyway, and you get the 17" tires that are more readily available.

Almost ridiculously easy mod.

I agree with this post 100%. But the intentions of this thread was directly aimed at those that want too keep their anti-dive forks and 16" wheels.

In the past, I have advocated ditching the 16" wheel and the anti-dive forks for the later model 17" wheels and forks. After I did the cost comparison of that exact swap and my GSXR1000 fork mod. It turns out that, yes the swap is a direct remove and replace, but at the cost of roughly $1000.00. May be prohibitive to some members.

The brackets that Dale found, gives a fairly inexpensive option for 17" wheels and better brakes on the 1100's and early 1200's.


Fred