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 Post subject: Fork legs - 750 vs. 907
PostPosted: Wed Jan 14, 2015 5:52 am 
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paso grand pooh-bah
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Joined: Sat Sep 03, 2005 12:00 am
Posts: 1313
Location: SF Bay Area
model: 750 Sport
year: 1990
If you are converting to 17" Ducati wheels from 16" wheels, one of your challenges will be the spacing of the front wheel in the forks. If you use the newer speedo drive that comes with the 17" front wheel, the wheel is not centered in the forks. The big reason for this is that the inside of the left fork leg is different, as shown below.
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Of course, machining your fork leg to match the 907 leg is a bit of challenge, unless you have a good machinist. Trust me, I have done it once already. Set up time was a over an hour, and cutting took about 30 seconds. Its much easier get a set of 907 fork legs, or 851 fork legs.

Of course the added benefit of the 907 sliders is that you can put on 4 piston calipers without the need for an adapter plate.

Cheers, Phil

_________________
Duc in the Bay
1990 750 Sport x2-Rosso Blanko (900ss copy) & Nuovo Nudo (Scrambler project)
1991 907 -mostly stock
2002 ST4s - Lots of mods.


Last edited by ducinthebay on Fri Jan 16, 2015 6:11 am, edited 1 time in total.

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 Post subject: Re: Fork legs - 750 vs. 907
PostPosted: Wed Jan 14, 2015 9:08 am 
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paso grand pooh-bah
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Joined: Sun Jul 18, 2004 12:00 am
Posts: 5100
Location: southern Germany
model: 750 Paso
year: 1987
do you know the transmission ratio of the 907ie speedometer drive ? If that was known one could look for a narrower one from another bike that might fit.
Another option could be a spacer instead of the speedometer drive and the use of a digital speedometer if that is legal.

G.


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 Post subject: Re: Fork legs - 750 vs. 907
PostPosted: Wed Jan 14, 2015 10:35 am 
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Joined: Mon Dec 29, 2014 10:36 am
Posts: 4
Location: Spain
model: 750 Paso
year: 1990
I am using the wheel and speedo drive from a cbr 600 92 on my paso 750 and works ok.

Regards


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 Post subject: Re: Fork legs - 750 vs. 907
PostPosted: Wed Jan 14, 2015 10:54 am 
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paso grand pooh-bah
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Joined: Sun Jul 18, 2004 12:00 am
Posts: 5100
Location: southern Germany
model: 750 Paso
year: 1987
JC, is its transmission ratio the same and does your speedometer show the correct speed?


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 Post subject: Re: Fork legs - 750 vs. 907
PostPosted: Wed Jan 14, 2015 11:20 am 
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Joined: Mon Dec 29, 2014 10:36 am
Posts: 4
Location: Spain
model: 750 Paso
year: 1990
It shows about 5% more speed than a GPS.

Regards


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