Vespa Dry Lake Racer lives...

[jpbyron]

Good to see the pulleys coming along. We have finished our and will boost test the blower in two weeeks, driving it of the motor but not pumping into motor.

JP

[internetscooter]

Good to see the pulleys coming along. We have finished our and will boost test the blower in two weeeks, driving it of the motor but not pumping into motor.

JP

Looking forward to seeing that - I do check out the facebook page when I remember

Here's an update from tonight - the test pulley holes and countersink worked I have a few tweaks to the CNC g-code and then I can bang out 3 real ones.

dplecko's I'll take on board your advice and make the pulleys high sided

Here are some pics and some action


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[gidge348]

That's a pretty nifty mill you have there, what type is it?

[internetscooter]

That's a pretty nifty mill you have there, what type is it?

It's a bitsa - mill head removed from a mill/lathe combo, mounted on a base and converted to CNC

http://www.vespalabs.org/User:Internets ... is_GPU-CNC

[RGV]

Nice work Paul.

Dave

[Johno Senior]

/Users/lynjohnson/Pictures/iPhoto Library/Originals/2013/19:09:2013/scooter

Sorry boys hope this pic turns out
One hot scooter.
johno

[internetscooter]

Looks like you need to upload it somewhere - send me it in an email paul dot mcintosh at internetscooter dot com (make the dot's "." and the at "@" - I post my email this way to prevent spam). I can then upload

[internetscooter]

Here you go



I know this one it is a 750cc stuck in a Vespa by some Italians as a result of a drunken bet. Yes that is a computer fan they are using for cooling.

Here's it's debut


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[Johno Senior]

Cheers scooter man your a techno wiz.
That is so Italian, jump on a kamikaze scooter and rap it out hard without trying it slow and steady, Last time I was in Milan thats how they ride around town, I seen a pranged scooter on the side of the road every working day for two weeks, they are fearless.
ciao Johno

[internetscooter]

Finally I have a 3D model suitable for CFD!


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I have just sent my virtual Vespa of down the virtual salt pan and by tomorrow I will have the first result...

A CdA (Drag Coefficient x Frontal Area) of <0.426 means I should get 105 mph with the current engine. Then I can improve this with power (supercharger) and partial streamlining

[RGV]

That looks like the real thing Paul. Streamlining will get you bigger and cheaper results I think.

Dave

[internetscooter]

OK - first result back sooner than expected



A CdA of 0.357

This means my power curve is my Achilles Heel, with no more gearing options I have to straighten it out top end and the supercharger should do the trick. I might even need a rev limiter to stop me going over 110mph (my tyre rating) - now that would be a good problem to have

[momec3]

It will indeed be interesting to see how our big white mistress compares to your cold hearted superputer

Chris

[RGV]

These guys have got their scooter screaming. I think they are running a super cart barrel.


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Dave

[internetscooter]

Yes - the scene over the in other hemisphere is getting pretty good.

Tony O'Brien just set the new world record for Vespa's a few weeks ago - 106.6 mph on a 1/2 mile standing start
http://79.170.44.125/green-hornet.co.uk/?p=987

Please, please let the lake be dry!