Topic: racing cb500 marching on

[turboguzzi]

OK peter, here's the deal

I have cast a pair of each.... share with me all your CB500 secrets and you get a set.

Fair enough?

Think twice before accepting. I have a VERY long list of questions :-)

TG

[jt]

Hi yossef,
We don't use nova in the 500.The 250/350 K4 gearbox fit straight in. In the Uk these cost about £800 and use some of the existing gears,works well at half the cost of a nova. Regards

Peter c

Peter,
    Could you go into a little detail on this? Do you use the complete 250/350 gearbox (shafts & all)  and some of the 500 gears?

Thanks
JT

[bill440cars]

Hi yossef,
We don't use nova in the 500.The 250/350 K4 gearbox fit straight in. In the Uk these cost about £800 and use some of the existing gears,works well at half the cost of a nova. Regards

Peter c

Peter,
    Could you go into a little detail on this? Do you use the complete 250/350 gearbox (shafts & all)  and some of the 500 gears?

Thanks
JT

             Yeah Peter, I'm with JT, I would like to hear more on this subject also. Would that setup be better in a 550 also? Details Please.
   
                                                  Later on, Bill

[peter c]

OK Guys,
If you get a set of gears to bring the ratios closer and give also a higher first gear from a supplier in the uk what you get is a new main shaft,the one the clutch fits on, new gears for this shaft and you use standard 350 gears to make up the box,fairly simple and no engineering. The 550 and also some of the late 500s have a thinner 5th gear,the one at the sprocket end of the shaft because the 550 hase a direct oil feed to this bearing,also on a 550 you would need to use the clutch actuation on the sprocket end of the shaft. There are hundreds of these boxes in use over here,much cheaper than a full nova box.I Have personally used this setup in my 500 for 3 years and used the same on my two 350s in the past.Hope this is of some help.I must say for racing it's the best tuning going,increases lap times a lot.
You will need to use the 350 clutch centre as the splines are different.
I may have some tuning secrets but only by private email.
Peter c

[bill440cars]

       Hey Peter,

               You've got an email enroute, as we speak.

                                                 Thanks, Bill

[peter c]

Hi Guys
For those who want a better rear brake we used a cb77 unit fitted the other way round to a cb77 with a modified brake plate,gives a lighter and more efficient twin leader.

peter c

[turboguzzi]

Hi pete

I am planning to fit a CB350/400 hub like the one in the pic. it's the italian classic bike champion's bike by the way.

In any case, at least here in italy, CB77's (hubs included :-)) are very rare on the ground

should pick a whole CB350 wheel this weekend

TG

[faux fiddy]

bump

3,000th read.


This thread was favorited on this computer, so it's my  portal to the website.

[bwaller]

TG started several threads as time went along, this is but one. His experimentation in the name of making it faster was inspiration for me too.

[SoyBoySigh]

Yeah - BUMP - I agree, some interesting stuff, and pic links that are still viable!!!

-Sigh.