Anyone on here running FG43 forks? I have a few questions with fitment. I can’t to get mine to line up, I think the disks are at least 5mm too big, although they came off a 916. I’m using my own WSBK calipers, that’s the only difference. With everything lined up and the pads touching the bobbins I’m still nearly half a hole out for mounting the caliper. I’m sure I’ve seen these forks and disks used before but could have been Facebook. Any help appreciated.
There are 2 disc offsets on Ducatis of that era, 10mm and 15mm. 916 as standard is 10mm, 748R and (I believe) 996R are 15mm. Do you know what offset discs you have fitted ? Andy
@Android853sp Thanks. I have the correct 15mm offset disks fitted. My problem seems to be the disk diameter
@Android853sp I should say the rotor diameter seems too big. The disk fits in the caliper fine but the bobbins clash with the pads
Is it something to do with old-school 'narrow band' discs as used on some race bikes? Looks like the caliper brackets are bolt-on so could be swapped.
Ive been searching for 100mm 6bolt ohlins brackets for fg43 for 15yrs. I have the 108 on mine and 748R discs and a spacer. I put gold coloured gsxr radial calipers on. Mainly coz same colour my old 40mm brembos are. Works great (comparitively speaking)
Thanks for all that info @Sev , I have a smaller set of disks which I can use in the shed I think but was really wanting to use the racing ones. The thing I don’t understand is that the forks and disks I bought together and came off another 916.
@ducati dad i have a few sets of these cast floating disks mate but they are the wrong offset for my setup
@Sev. After reading this thread, it motivated me to write an email to Ohlins asking if they have drawings. Dont ask, dont get kinda thing. Sure, the bikes not going anywhere for a while. Be nice to use my oem 916 discs as all I could get were galfer wavey things for 748r and I dislike wavey discs. Plus the carrier is black.
Thanks again @Sev . Yes see photo from when I bought them all fitted to SP2. The only difference being the calipers, although I bought the calipers also so will have to dig them out and try but would rather use mine. I can’t see how the calipers would make any difference as both for 40mm 916 forks. The offer with the racing disks is perfect, it’s the diameter I’m out on. I tried a set of disks I had the same as @ducati dad has but the offset was way off. I would need to shim between the bracket and the caliper.
@Sev, this thread is of no use to me whatsoever, but enjoyed reading it, the level of your knowledge is very impressive
Sorted, thanks for all the help @Sev amazing knowledge. I had to trim a bit of the pads, not as far as friction material though, I only realised when I took the pads out both sets of calipers and put them back to back. All together now.
It was the pad backing, I had to grind a small radius onto the bottom of the pads to clear the bobbins, it didn’t impede on the friction material though
@Sev, brilliant, thanks again. My pads in both sets are flat bottom, I will order replacements at some point with the correct profile.
