907ie FRONT DISC SET NEEDED.

[customhead]

mmmmm..thought i had 1989 900ss forks on the project but the 320mm rotors dont let the calipers bolt up.

pretty sure it will be the 907ie BB1 forks that take the 300mm rotors then. annoying.

anyone have some rotors hanging around?

regards

Sean

[customhead]

or a whole front wheel it just occured to me....

[bmw851]

Sean, you should just need a set of adapter plates plates for the 4 Spot Calipers to suit the rotors, they were available through bevelheaven, https://store.bevelheaven.com/brake-rel ... mm-rotors/

and/or there are drawings on the site to get them made up.

This is one type below, assuming 40mm mounting centres

Untitled.jpg (127.88 KiB) Viewed 6426 times

Cheers

Peter

[bmw851]

Newdisc_zps876c46ae.jpg (47.3 KiB) Viewed 6423 times

This is site member Danielmc's adapters and link to the technical drawing

https://app.box.com/shared/lzd6kxnkgk

[paso750]

Is that primer or is all really painted baby blue ?

[customhead]

I am using 40mm spaced calipers. You can see them on the ground. The forks have 40mm mounts.
I would like to keep both and just change rotors.
Those mounts wont help and I dont want to use "Yamembos" BMW 851

the color for the bike is Blue Grey. I have made many custom Ducatis and am bored of red, black, and yellow.

[paso750]

so the issue is not an incorrect offset of the discs but that you can`t mount the calipers due to the 10mm larger disc radius? I guess one could design a caliper adapter to make it work. Can`t say how that would look though.

What bike are those calipers from or did you paint them ? The ones from the early 851 look different and the black ones from the old Multistrada have 65mm mount.

[customhead]

exactly. its the diameter that is a problem.

the calipers are what I call STD gold Brembos (think 900ss) but 2-pak black.

300mm discs are the easiest solution I believe.

[paso750]

understood.
Maybe this helps finding some. From the 907ie FAQs:

300mm front brake discs

are the same as used on:

Cagiva Freccia C12 89-91
Guzzi Daytona 1000 ie 92-94 (KA)
Yamaha TZ 125 comp. 94-95 (4JT)
TZ 250 97 (4TW)
FZR 400R 90- (4DX)
FZR 600 89 (3RG, 3RH)
FZR 600 90-94 (3HE)
FZR 600 95-96 (4JH, 4MH)
FZS 600 Fazer 98- (RJ02)
TDM 850 91-01 (3VD)
TDM 850 96- (4TX)
TRX 850 96-00 (4UN)
FJ 1200 88-89 (3CW)
FJ 1200 90- (3CX, 3GP)
FJ 1200 (w/o ABS) 91-93 (3YA)
FZ 750 Genesis 89-92 (3KT)

[bmw851]

I am using 40mm spaced calipers. You can see them on the ground. The forks have 40mm mounts.

Not a problem, could see the 4 Spots on the ground, but couldn't see the mounting tabs on the forks, so thought they were MIB's or similar with the 108mm mounting spacing, my bad.

Metropolitan Spares in Sydney would most likely have 300mm s/h rotors to suit if worse comes to worse.

Cheers

Peter

[customhead]

Thanks everybody, still looking....