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

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Pete Roper
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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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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
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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
Carlotto
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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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Hacky
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PostSubject: Re: Y'know that idea about 1400-ising a GRiSO......   Sat Dec 17, 2016 3:55 pm

I have plenty of spare time at the moment. Found this on my searches which may be of interest. The engine mods not the cafe racer styling.
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GNORTS
Grignapoco
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PostSubject: Re: Y'know that idea about 1400-ising a GRiSO......   Sat Dec 17, 2016 5:07 pm

Hacky wrote:
I have plenty of spare time at the moment. Found this on my searches which may be of interest. The engine mods not the cafe racer styling.
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Damned exhaust is on backwards.

The article says the Tonti frame is still in production. News to me.
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f-man
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PostSubject: Re: Y'know that idea about 1400-ising a GRiSO......   Mon Dec 19, 2016 10:44 am

Radical Guzzi (Stefan Bronold) uses old Tonti frames. So he had only to fullfill the old emission standards and it is possible to approve the bikes here in Germany.

Sven
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Street
Nibbio
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PostSubject: Re: Y'know that idea about 1400-ising a GRiSO......   Mon Dec 19, 2016 11:02 am

Check out that clearance!

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Street
Nibbio
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PostSubject: Re: Y'know that idea about 1400-ising a GRiSO......   Mon Dec 19, 2016 2:12 pm


By the way, this may be a stupid question, but with the exhaust facing forward like that, wouldn't there be some kind of conflict between the exhaust trying to exit and cool air trying to enter at the same time? And wouldn't that affect performance somehow? Where's that head-scratching emoji? scratch
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beetle
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PostSubject: Re: Y'know that idea about 1400-ising a GRiSO......   Mon Dec 19, 2016 2:35 pm

I'm more concerned with the torque of that 1400 twisting that crappy Tonti frame like wet spaghetti. Or twisting that old bevel box to shreds.

And don't get me started on unfiltered carb-u-wreckers. Rolling Eyes




.


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Grisonut
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PostSubject: Re: Y'know that idea about 1400-ising a GRiSO......   Mon Dec 19, 2016 6:50 pm

Street wrote:

By the way, this may be a stupid question, but with the exhaust facing forward like that, wouldn't there be some kind of conflict between the exhaust trying to exit and cool air trying to enter at the same time? And wouldn't that affect performance somehow? Where's that head-scratching emoji? scratch

Kinda dumb set up for sure...as far as obstruction flow, nahhh...the pressure coming out of those pipes is much greater than cutting through ambient air. Even rain wouldn't be a problem...
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ghezzi
Fra Cristoforo
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PostSubject: Re: Y'know that idea about 1400-ising a GRiSO......   Mon Dec 19, 2016 8:49 pm

Ever consider the exhaust pipe angles of top fuel dragsters. They are angled upwards to create down force and rearward for obvious reasons. If they lose a cylinder half track the imbalance of "thrust" can cause the car to veer to one side.

I think the 1400 is a few thousand horsepower short of a reverse gear.
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f-man
Grignapoco
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PostSubject: Re: Y'know that idea about 1400-ising a GRiSO......   Wed Dec 21, 2016 4:44 am

Here is another Radical Guzzi. It is also awaylable with up to 1700 ccm.

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Sven
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PostSubject: Re: Y'know that idea about 1400-ising a GRiSO......   Today at 11:33 am

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