Top End of an 8000 rpm 750 Breganzie Twin

No Hound:

I can't do it without access to original SF Spec Valve Train (Too much time has elapsed). Perhaps from the Green Book, where my Spec's are beyond spec's to design an 8000rpm Breganzie SF Valve Train.

Had a stroke about a year ago that limit's my ability to see, use a lath and wrench - I'm about to log out.

If you want to know something about the Breganzie SF 8000rpm Valve train - I suggest you pay attention and help me upload My Spec's.

2400 hit's I know damn well Laverda Forum Members are interested in the Breganzie SF.
 
Theory,

When it doesn't work, the theory used is clearly wrong, Physics is never wrong, it just has rules you don't always understand.
When it does work, the theory used "maybe" true,
Try it again on something else, if it still holds true then its worth remembering but still only "maybe" true,
Simplifying physics is usually the fastest way to a hiding,
Dyno testing or Real Racing with strictly applied rules are the only meaningful ways of testing your work.  "it feels faster" or "it'll rev to "8500" or "it's faster than my mate and he has 500hp"  is total rubbish and only for fools with egos to flatter.

One theory that always hold true though.
There is always someone who knows more than you, (certainly true here)
Forum experts usually know little,
If they were real experts then they would have little time for blabbing on the forum,
And even less need to do so,
If you want to prove your knowledge to others, go out and actually do it, then let your work do the blabbing, not the other way round.

I'm off back into the workshop to learn some more about making coffee.  (I?m an expert at that at least)  :D
Bye!!  :P

Julian




 
Laverda SF said:
Had a stroke about a year ago that limit's my ability to see, use a lath and wrench - I'm about to log out.
Click to expand...

Sorry to hear that you've had some health problems Ron. But don't "log out" too soon. I hope you'll be around to amuse and confuse us for a while yet. Are you still able to get out for an occasional ride on the SF?
 
750 Breganzies (sic) blow up at 8000rpm.  They do, Ron, Ron, they do, Ron, Ron.
 
I'm not at home - Spending time in the backwoods of the Cambrian Shield.

I will get back. I agree a 750 will blow up at 8000rpm but if the Valve Train is light enough with porting you can achieve it in short bursts along with jetting and a descent exhaust.

The red line of a 71 SF is 7400rpm.
 
Bloody hell Ron. We all thought you'd died.
26 people have just cancelled their flights to Canada. Seems they thought there was going to be a fast red SF for sale over your way :D
 
Trying to get my Jeep together for the Winter - Rebuilding the front drive shaft ;o(

It can run in 2WD without it but I need 4WD for the winter and Winter can be tomorrow in Northern Ontario.
 
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