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 Y'know that idea about 1400-ising a GRiSO......

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Pete Roper
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Age : 59

PostSubject: Re: Y'know that idea about 1400-ising a GRiSO......   Mon Oct 10, 2016 4:04 pm

Sorry guys. Bolt on capacity increase was easy with the pushrod bikes, up to a point.

The point comes when the stud pattern limits bore size and the con rods hitting the cam lobes limits stroke. The *1200* cc format, although it is in fact smaller, is the effective limit that the old engine can be taken to.

The Hi-Cam has the advantage that the dummy shaft that takes the cam drive from the front to the back of the engine has no lobes on enabling a slightly longer stroke, (I think?) but as important is the widening of the stud pattern and different construction of the overall top end meaning capacity can be increased.

FWIW a greater swept volume is very unlikely to make much more top end. What it will hopefully do is increase torque, especially with good cylinder fill, appreciably.

Pete
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Oz1200Guzzi
Don Abbondio
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PostSubject: Re: Y'know that idea about 1400-ising a GRiSO......   Tue Oct 11, 2016 3:20 pm

I think it is awesome that in this day and age of 'plug-n-play' that people are still will to give things a go. Awesome!
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Grisodude
Tiradritto
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PostSubject: Re: Y'know that idea about 1400-ising a GRiSO......   Thu Oct 13, 2016 1:14 am

"I think it is awesome that in this day and age of 'plug-n-play' that people are still will to give things a go. Awesome!"
Tony said

Yep I call it out of the square thinking.
Love it
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ghezzi
Fra Cristoforo
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PostSubject: Re: Y'know that idea about 1400-ising a GRiSO......   Thu Oct 13, 2016 1:21 am

Hey, does that include Bella?
Or was that just a WOFTAM?
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Pete Roper
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PostSubject: Re: Y'know that idea about 1400-ising a GRiSO......   Thu Oct 13, 2016 2:34 pm

ghezzi wrote:
Hey, does that include Bella?
Or was that just a WOFTAM?

What? The capacity increase? Yup. You can use a 1200 crank etc. in your case but there *Might* be issues with the rod bolts kissing the filter, (Use a smaller, lower, filter.). The other thing would be needing an adapter for the end of the crank to fit the Ducati alternator but that's been done before.

Pete
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beetle
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PostSubject: Re: Y'know that idea about 1400-ising a GRiSO......   Thu Oct 13, 2016 3:09 pm

Isn't the 940 a ripper because of the short stroke?


scratch
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ghezzi
Fra Cristoforo
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PostSubject: Re: Y'know that idea about 1400-ising a GRiSO......   Thu Oct 13, 2016 3:57 pm

Sorry guys, I was referring to Tony's comment;

I think it is awesome that in this day and age of 'plug-n-play' that people are still willing to give things a go. Awesome!

Hey, does that include Bella?
Or was that just a WOFTAM?
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techman-001
Grignapoco
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PostSubject: Re: Y'know that idea about 1400-ising a GRiSO......   Thu Oct 13, 2016 4:15 pm

ghezzi wrote:
Sorry guys, I was referring to Tony's comment;

I think it is awesome that in this day and age of 'plug-n-play' that people are still willing to give things a go. Awesome!

Hey, does that include Bella?
Or was that just a WOFTAM?

Engineers I used to work with were always trying to incorporate WOFTHAM into the first seven paragraphs of all their reports and sneak it  past management. i.e.

While our competitors enjoy ...
Originally used in our model xyz ..
Focus is on the ...
Technological advancements allow ..
Also relevant ...
Mass manufacturing techniques allow ..
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beetle
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Posts : 3966
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PostSubject: Re: Y'know that idea about 1400-ising a GRiSO......   Thu Oct 13, 2016 5:20 pm

ghezzi wrote:


Hey, does that include Bella?
Or was that just a WOFTAM?


But Bella is a special case, Wayne. Razz


cheers
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ghezzi
Fra Cristoforo
Fra Cristoforo


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PostSubject: Re: Y'know that idea about 1400-ising a GRiSO......   Thu Oct 13, 2016 6:29 pm

Yeah, my sister says I'm "thpethial" too. geek

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Glen Forrest
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PostSubject: Re: Y'know that idea about 1400-ising a GRiSO......   Mon Nov 14, 2016 10:42 pm

Oz1200Guzzi wrote:
I think it is awesome that in this day and age of 'plug-n-play' that people are still will to give things a go. Awesome!

Bravo Pete.

Good luck and hope it works out well.

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PostSubject: Re: Y'know that idea about 1400-ising a GRiSO......   Today at 9:53 am

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