VESPA DYNO GRAPH POSTING AREA

Post your Vespa dyno graphs here! But graphs & spec info only, keep the chat in the 'dyno chat' section ;o)
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Adspeed
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Sun Nov 08, 2009 9:07 pm

Post your graphs here!! ;)

Although a dyno should be used as a development tool they are a perfect way to show others the results of many nights in the garage with the porting tool or some of the top tuners handy work but generally speaking to show the characteristics of your engine.


So whether your chasing big HP figures or got a practicle road/rally tune why not post them here with a little spec of the engine :)

Those guys that have posted already on the forum why not re post them here so they can easily be found in the future! :)

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Adspeed
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Sun Nov 08, 2009 9:13 pm

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This is my graph of the 50 Special I have with the Parmakit setup before and after a little fettling. To be honest from what I know now I'd approach the tune a little different but the thing flies anyway.

This engine was dynoed at Diablos for the smallframe shootout in the mag and produced 19.5hp :D

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acko
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Sun Nov 08, 2009 10:33 pm

Diablo/Harry Barlow Polini 177
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Last edited by acko on Sun Dec 08, 2013 8:32 pm, edited 2 times in total.
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madmax
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Mon Nov 09, 2009 8:37 am

Here is the graph for my malossi powered 50spesh:

Image

Malossi 136 direct intake
Full circle crank
Modified malossi head
26/69 primaries
Short 4th
Modified PKXL2 clutch
25mm dell'orto carb with powerjet
Vespatronic
VSP Race pipe.

Tuned by hour Tony, jetting and timing set up by Charlie Edmonds.

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tony
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Tue Nov 10, 2009 3:42 am

One from me. This is a group 4 spec proto using a fabrizi alloy barrel. 51stroke and 61bore (i think-i'll check)149cc. No welding and using a rotary valve as per the regs. The kit was not homolgated in the end so I only ran it for 3 meets to test. Ignition was mapped. Carb on this run was a dellorto I think. Pipe-a kegra krp5 proto. Cr gearbox, xl2 clutch. Central plug head. Problem with this was it destroyed clutches as this was prior to decent plates or units being available. Also vibration was an issue. Had this motor dynamically balanced in the end which sorted it to a degree. Has quite a bit of over rev as Kegra pipes tend to have.

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Last edited by tony on Mon Nov 16, 2009 9:32 pm, edited 2 times in total.
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OzOAP
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Mon Nov 16, 2009 8:27 pm

PTS1E on JB's

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paulj
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Wed Dec 16, 2009 9:22 am

my fabrizi 152, crankcase reed, lengthened kx125 pipe.

i have a varitronic igntion, and it sparks twice every rev, so you need to double the revs to get the right figure (it doesnt have 24hp at 5k!)
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paul

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Olivier
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Fri Apr 30, 2010 8:37 pm

Hello,
here is my last year dynograph with only 24 carb on M1 , squish 1.6 mm :

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Chris.
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Tue Oct 19, 2010 8:08 pm

Polini 208 motor by Diablo
23/64 upgear, T5 4th, Lightened Flywheel, JL R/H exhaust, Standard 24mm Carb.
18.5 hp and 17 ft.lb.

Image

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ssteam177
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Tue Nov 30, 2010 4:06 am

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here is my polini 208, bgm pwk 30mm mikuni vac pump
maz 60mm reed valve crank
23/64 up gear with t5 4th
malossi reed block
pk flywheel
cases welded and reported to suit the kit
exhaust port widened
.8mm packing plate on the bottom of the barrel
mmw 10.5;1 head
vintage 226 hot wing pipe
the set up is not as torquey as i hoped it would be copared to the other dyno sheets ive seen with the polini kit im unsure why
http://i40.photobucket.com/albums/e241/ ... 153616.jpg
ps sorry for the s**t image scaner is not working taken with mobile
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