1000ds FCR Build

[Düb Lüv]

Who gonna do it?

Franks going to do it.

[junior varsity]

sweet.  i have some of his handiwork.

[Düb Lüv]

I just got back my parts I sent to fast frank racing and I was pretty blow away by the work he did. Especially on the gears. On the big primary he faced both side before machining the holes rather than just punchin some holes in it. Top notch work.


Large primary
Before 4lbs 10.6oz
After 3lbs 11.3oz

Small primary
Before 2lbs 5.7oz
After 2lbs 1.5oz









Clutch case cover
Before 4lbs 1oz
After 3lbs 8.6oz

[Buckethead]

Ooooooooh.......   

[Rob Hilding]

Do you have a total weight savings to date?

Nice work!

[scduc]

At what point does lightening the gears become a bad thing? Although they look super nice, I'm afraid to do similar due to weakening the gear itself.

[Düb Lüv]

At what point does lightening the gears become a bad thing? Although they look super nice, I'm afraid to do similar due to weakening the gear itself.

Ohhh it likely going to rev like crazy. I know that. Well on all the newer sbk's and 1100s/evo's the internal gears a being cut and lightened from the factory. Even some of the older corse racing stuff was too.

[krista]

Ooooo I love the open clutch case!

[Düb Lüv]

Thanks Chris.


Gear and cover weights uploaded

[ducatiz]

At what point does lightening the gears become a bad thing? Although they look super nice, I'm afraid to do similar due to weakening the gear itself.

You would have to remove a lot of metal before it compromises the gear.  I've seen lightened gears with what looks like 75% of the metal removed. 

The main issue is balance.  As long as the gear has enough metal to keep the toothed portion attached at speed and it's balanced, not much happens.

[JohnEE]

Took me a second to realize what you did to the left cover, doh! You definitely need make a video/gif of clutch spinning when its all put back together again. Looks great!

[junior varsity]

Took me a second to realize what you did to the left cover, doh! You definitely need make a video/gif of clutch spinning when its all put back together again. Looks great!

These cut-outs on the clutch case cover were common on the race bikes from the decade-of-dominance era.

[koko64]

 
Wondering how she'll go come dyno time?

[Rudemouthsky]

Sorry for the interruption, just curious about something..

with a set of custom manifolds, or possibly a modified  set of 900 manifolds, could the FCR's on a rail be used for this project with similar success ya think?

[junior varsity]

You wouldn't want to, that'd be going to a long-manifold: no good for big power.