Author Topic: mystery forks (Read 5916 times)

Colin Tweedie · « **on:** June 18, 2012, 01:37:38 PM »

Can anyone identify these ? Colin S recons they are race forks origonating from the US of A . Looks like magnesium and 35mm

kos · « **Reply #1 on:** June 18, 2012, 02:03:36 PM »

Not Honda

Colin Tweedie · « **Reply #2 on:** June 18, 2012, 02:19:33 PM »

Still think they are not Honda?

scottly · « **Reply #3 on:** June 18, 2012, 06:35:54 PM »

They look like they were designed to fit the early "C" caliper brackets. Also notice the FC cast into the lower fork leg? I wonder is there is any connection to my CFC magnesium right-side bracket?

spiritof67 · « **Reply #4 on:** June 18, 2012, 08:58:42 PM »

In partial answer to the "FC" question, my nominal knowledge of Italian would lead me to believe that it may be "Forcelle Ceriani", or Ceriani forks. Didn't Ceriani make replacement forks for the CB750, like Marzocchi ("Forcelle Marzocchi")? And the "CFC" is for Checkered Flag Customs, an offshoot of Yoshimura. They made those infamous and rare magnesium "other-side" caliper mounts that enabled us to double disc our CB750's back in the 70's.....

Spirit

scottly · « **Reply #5 on:** June 18, 2012, 09:13:30 PM »

Quote from: spiritof67 on June 18, 2012, 08:58:42 PM

And the "CFC" is for Checkered Flag Customs, an offshoot of Yoshimura. They made those infamous and rare magnesium "other-side" caliper mounts that enabled us to double disc our CB750's back in the 70's.....

Spirit

Thanks!!! Any more info you can add would be appreciated! Scans of print ads, etc...

754 · « **Reply #6 on:** June 18, 2012, 10:09:10 PM »

Checkered Flag made 4 bolt lower mount, magnesium fork legs for dual disc,, way back.. probably before Yoshimura got well known.. Those look like Ceriani Trees, do they have handlebar mounts?
I am not sure that the original Cerianis had Forcelle in the name.. it may be from when the 2nd generation stuff got made..

Colin Tweedie · « **Reply #7 on:** June 19, 2012, 05:05:59 AM »

No handle bar mounts , the other fork leg is marked CF

turboguzzi · « **Reply #8 on:** June 19, 2012, 12:32:54 PM »

Quote from: colintweedie on June 19, 2012, 05:05:59 AM

No handle bar mounts , the other fork leg is marked CF

which is clearly "Ceriani Fork"

seriously, with a grimeca hub and tomaselli clipons, the whole plot looks Italian indeed but never seen one in our race meetings.

fang · « **Reply #9 on:** June 21, 2012, 07:43:49 PM »

They look a LOT like my buddy's Ceriani Forks. But I am no expert about that.

754 · « **Reply #10 on:** June 21, 2012, 09:14:50 PM »

If its Ceriani legs then you should find other sets. i am telling you checker flag made magnesium or Allowers with 4 bolt bottoms.... I doubt the lower legs are Ceriani..

scottly · « **Reply #11 on:** June 21, 2012, 09:31:38 PM »

Whatever they are, they were clearly made to use the early 750 brake mount. It would be nice to see more detailed pics of the triples.

turboguzzi · « **Reply #12 on:** June 21, 2012, 11:59:40 PM »

triples look like OT35 ceriani though

scottly · « **Reply #13 on:** June 22, 2012, 12:04:28 AM »

Hard to say without good pics, from different angles..
In the first pic, the front of the top triple appears almost flat, while the bottom one has a rather deep "V" shape, compared to your pic, TG.

H2Eric · « **Reply #14 on:** June 22, 2012, 01:08:50 AM »

754 I think you are spot on. I've just dug out my Yoshimura catalogue from 1973/4 and Checkered Flag Customs became a division of Yoshimura Racing Inc. Those lower fork legs look exactly the same as what's in the catalogue. A complete dual disc system including a pair of magnesium fork legs would have cost you $189.50

Regards
Eric

turboguzzi · « **Reply #15 on:** June 22, 2012, 04:39:58 AM »

Quote from: H2Eric on June 22, 2012, 01:08:50 AM

754 I think you are spot on. I've just dug out my Yoshimura catalogue from 1973/4 and Checkered Flag Customs became a division of Yoshimura Racing Inc. Those lower fork legs look exactly the same as what's in the catalogue. A complete dual disc system including a pair of magnesium fork legs would have cost you $189.50

Regards
Eric

would surely love a scanned copy of that catalog... can i PM you my email? i can put it up on a server somewhere to share

bwaller · « **Reply #16 on:** June 22, 2012, 05:54:20 AM »

I've got a Yosh catalog with the CFC parts in the back. They advertize as a division of Yoshimura racing Inc. at that point. Four stud magnesium fork legs are $39.95 ea....polishing $5 extra per leg!

It's 120 pages though TG, maybe I can cherry pick through the 500/750 stuff unless someone else already has.

754 · « **Reply #17 on:** June 22, 2012, 07:29:51 AM »

I think I got a road test on them legs in a bike mag from way back, finding it may be tough..
If the top tree is flatter it could be 2 bottoms, or a shaved off flat track tpe like the Sorcerer is getting..

Colin Tweedie · « **Reply #18 on:** June 22, 2012, 07:59:33 AM »

Thanks guys looks like you have solved the mystery , could it be said these are quite rare ? the reason I'm asking is that I intend to convert from drum brake to disk to do this would mean machining these stumps to fit caliper brackets etc might be shame to spoil them?

754 · « **Reply #19 on:** June 22, 2012, 08:40:24 AM »

I cant see why you would have to cut the legs to mount brakes on them.. use double acting calipers..

Colin Tweedie · « **Reply #20 on:** June 22, 2012, 09:04:17 AM »

Was going to do it the same way as my Tab K4

scottly · « **Reply #21 on:** June 22, 2012, 10:19:20 AM »

Quote from: colintweedie on June 22, 2012, 07:59:33 AM

Thanks guys looks like you have solved the mystery , could it be said these are quite rare ? the reason I'm asking is that I intend to convert from drum brake to disk to do this would mean machining these stumps to fit caliper brackets etc might be shame to spoil them?

Why not use 2 stock calipers? You can modify a stock left side bracket to mount on the right fork leg. BTW, only 2 of the CFC brackets have surfaced, that I know of.

Eric, did the dual-disc system in the catalog include cast-iron rotors, bolted to aluminum hubs?

Colin Tweedie · « **Reply #22 on:** June 22, 2012, 10:27:50 AM »

I used a stock caliper on the 350 k4 it was good for about 4 lapss then started to fade , might have been the pads but there is just no substitute for a Lockheed AP

H2Eric · « **Reply #23 on:** June 22, 2012, 02:35:26 PM »

Quote from: scottly on June 22, 2012, 10:19:20 AM

Quote from: colintweedie on June 22, 2012, 07:59:33 AM
Thanks guys looks like you have solved the mystery , could it be said these are quite rare ? the reason I'm asking is that I intend to convert from drum brake to disk to do this would mean machining these stumps to fit caliper brackets etc might be shame to spoil them?
Why not use 2 stock calipers? You can modify a stock left side bracket to mount on the right fork leg. BTW, only 2 of the CFC brackets have surfaced, that I know of.

Eric, did the dual-disc system in the catalog include cast-iron rotors, bolted to aluminum hubs?

The CFC kit used standard Honda discs and a standard Honda 500 caliper by the look of it which I think were reversable to use on the right side. CFC also did magnesium caliper mounts as well @$18.95 each. I was lucky enough to purchase one of these kits for my CB500 back in 1974, the only snag was the salt that the highways dept threw all over the roads in the winter which ate the magnesium.
I'll try to scan a few pages from the catalogue and post them here tomorrow.
Cheers
Eric

754 · « **Reply #24 on:** June 22, 2012, 08:35:55 PM »

I am not sure these were even intended for 750;s, pretty sure the roadtest i saw was for a CB 500
I thought they were 99.00 or 119.00 without a second disc.. I bet Racecrafters may have sold them..anyone remember them?

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Author Topic: mystery forks (Read 5916 times)