Topica Loopframe_Guzzi Archive


Subject: RE: Loop Performance

Author: Greg Bender

Date: May 19, 2005, 5:13 AM

Post ID: 1718890997



Hi Skip,

I thought I'd expand just a bit on the grearing situation. I just pulled
out Mike Wright's Guzzi Gearing spreadsheet (downloadable from
GuzziTech). It's a lot more fun if you have Microsoft Excel
installed...because you can play with the numbers, see the effect of
tire diameter, theoretical speeds at a given RPM, etc.

V700
===============================
Gear Tooth Ratio Overall
Primary 16/22 1.3750
1st 13/29 2.2308 14.1863
2nd 18/24 1.3333 8.4792
3rd 22/21 0.9545 6.0703
4th 24/18 0.7500 4.7695
Final 8/37 4.6250


V7 Special and Ambo
===============================
Gear Tooth Ratio Overall
Primary 16/22 1.3750
1st 13/29 2.2308 13.4195
2nd 18/24 1.3333 8.0208
3rd 22/21 0.9545 5.7422
4th 24/18 0.7500 4.5117
Final 8/35 4.3750


Eldo, 850GT and 850T
===============================
Gear Tooth Ratio Overall
Primary 17/21 1.2353
1st 14/28 2.0000 11.4265
2nd 18/25 1.3889 7.9350
3rd 21/22 1.0476 5.9853
4th 23/20 0.8696 4.9680
5th 28/21 0.7500 4.2849
Final 8/37 4.6250


Skip & Jane wrote:
 
I think the 4th in a 4spd and 5th in a 5spd are the same if you have the
corresponding rearend. I know if you put a Ambo rear end in a eldo it
will
lower your RPM's at highway speeds. My dad has a Eldo with a 4spd and
a
Eldo rearend and that thing was a bullet from red-light to red-light. I
am
not sure what the final ratio was but it had to be low. It was a blast
to
ride around town

Skip & Jane Kologiski
Bird at The Wheel Vintage Motorcycle Stuff
http://home.earthlink.net/~kkologiski/bird.html
Central Florida Reps for the MGNOC (Moto Guzzi National Owners Club).
Fla Guzzi Sitehttp://www.thisoldtractor.com/fl_mgnoc/
Coma Vintage Motorcycle Group
http://www.thisoldtractor.com/coma/index.html
----- Original Message -----
From: "John Ulrich" <johnulri-@yahoo.com>
To: <Loopfram-@topica.com>
Sent: Wednesday, May 18, 2005 8:31 PM
Subject: RE: Loop Performance


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Robert Hawkes wrote:
 I have heard that simply putting a 5 speed tranny on an Ambo
doesn't really render the desired effect of actually having a
longer-legged bike.

I don't have my books with me but I believe 4th in a 4spd and 5th in a 5
spd are both the same ratio.

Later,
JU

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Regards,

Greg Bender
1971 Ambassador
2000 Quota
http://www.thisoldtractor.com/gtbender

Florida MGNOC website
http://www.thisoldtractor.com/fl_mgnoc

Minnesota MGNOC website
http://www.thisoldtractor.com/mn_mgnoc

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