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 Post subject: Need fork leg help! 907ie.
PostPosted: Wed Mar 25, 2015 11:23 pm 
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Joined: Tue Oct 28, 2014 1:36 pm
Posts: 16
Location: USA
model: 907 I.E.
year: 1991
Can anyone tell me if the 1991 fork legs are different from the 1992 on the 907ie?
The bolts are 40mm apart, but is the location of the lug different?
I have purchased 320mm rotors as well as new P34 Brembo gold calipers .Took a quick fit up without my wheel and it looked like they will work with my fork legs. ( My wheels are at the powder coater until the weekend.)
If you have a 1992 ,could you measure the location of the lugs for me? I would greatly appreciate it.
Thanks in advance.


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 Post subject: Re: Need fork leg help! 907ie.
PostPosted: Thu Mar 26, 2015 3:13 am 
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paso grand pooh-bah
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Joined: Sat Sep 03, 2005 12:00 am
Posts: 1322
Location: SF Bay Area
model: 750 Sport
year: 1990
The answer is "probably".
The 1991 had 300 mm rotors, and the 1992-3 had 320mm rotors. Same wheels, and sometimes same calipers (black or gold) So yes, there are two different fork legs. No obvious visual differences.

Cheers, Phil

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


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 Post subject: Re: Need fork leg help! 907ie.
PostPosted: Thu Mar 26, 2015 10:09 am 
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paso grand pooh-bah
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Joined: Thu Nov 03, 2011 10:13 am
Posts: 670
Location: Scotland
model: 907 I.E.
year: 1994
I have a 93 model with 320mm discs. As near as I can measure, the distance from the bottom of the fork leg to the centre of the lower caliper lug is 145mm.

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2017 Supersport 939
2015 Scrambler Classic
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 Post subject: Re: Need fork leg help! 907ie.
PostPosted: Fri Mar 27, 2015 1:35 pm 
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Joined: Sun Feb 09, 2014 8:24 pm
Posts: 9
Location: Netherlands
model: 907 I.E.
year: 1992
With both a '91 and a '92 in the garage, it is easy to compare. The results are:

'91
Distance from centre of axle to bottom calliper lug: 110 mm
'92
Distance from centre of axle to bottom calliper lug: 120 mm

It does make sense as the brake discs on the '92 are 20 mm bigger diameter, so 10 mm larger radius...

Sorry buddy, but they are not the same for exactly this reason...

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If it ain't broke, don't fix it. Modify it!


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 Post subject: Re: Need fork leg help! 907ie.
PostPosted: Sun Apr 05, 2015 3:14 pm 
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Joined: Tue Oct 28, 2014 1:36 pm
Posts: 16
Location: USA
model: 907 I.E.
year: 1991
Thanks for all of the replies and assistance. It has helped as I work through this. I am amazed at how small the 907 community is. There is so little info on the web to work with. I am a licensed Ducati mechanic and will help try to provide as much info from my experiences with my 907 as possible to help others.
I am going to use the Brembo Goldline ( P4 3--34 with 40mm spacing)) calipers that I purchased from Bevel Heaven along with Brake Tech Axis Iron 320mm rotors that I purchased from Chris Kelly at California Cycle works.I had a set of 1992 forks purchased from EBAY but when they showed up someone had ground the caliper mounting lugs at some point ( who knows why) and rendered them useless, so I sent them back for a refund.I am now looking for a set of lower fork legs to make this work out.In the meantime I will be using 300mm EBC Pro-Lite rotors so I can at least ride the bike.
After I get the forks I need I will switch over to different pads and the Iron rotors.
I have re-powdercoated my wheels as when I purchased the bike the PO had done a lousy job on them. I have also reworked the rear cush drive with Titanium pins from TPO parts as well as new cush lugs and Supersprox sprockets with machined 90 degree valve stems.
I have also upgraded to a Nissin Radial pump master cylinder with 5/8 piston.


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