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Author Topic: New Vintage Project, 250cc M-VG, Reconstruction of a 1933 French Jonghi 350  (Read 29970 times)

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Offline thefrenchowl

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Yes, rule 7.E.5 ""ahead and above rear axle centerline""

Still as is in the 2019 rule book...

Centerline is a bit vague, horizontal? vertical? Mine's above the horizontal CL and ahead would mean in front of the bike???!!!

When I raced my Harley in 2011 and 2013, the numbers were on the seat rear hump, well rearward of CT!!!!!!... Nope was said about it...



I'm sending a mail now to the tech guys... (by the way, they already seen photos of the bike and they did not comment on that point...)

Thanks for pointing out potential pit falls!!!!! Well apreciated!!!!!

Patrick
Flat Head Forever

...What exactly are we trying to do here?...

Offline Seldom Seen Slim

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I don't see any issues.  I believe the spirit of the rule is to prevent number plates from being used as aero devices.  Your numbers are on the tail section which is there anyway.

I don't see a foul. 8-)
Jon E. Wennerberg
 a/k/a Seldom Seen Slim
 Skandia, Michigan
 (that's way up north)
2 Club member x2
Owner of landracing.com

Offline salt27

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I don't see any issues.  I believe the spirit of the rule is to prevent number plates from being used as aero devices.  Your numbers are on the tail section which is there anyway.

I don't see a foul. 8-)

Wrong bike Jon, go back a page.

  Don
« Last Edit: July 10, 2019, 08:57:42 PM by salt27 »

Offline Bookfla

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With the number plate having a radius instead of being flat why wouldn't it be considered as an aero improvement?

Offline Seldom Seen Slim

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Thanks, Don  I was kinda sleepy/lazy and didn't check.  Now that I have - indeed, a note to M/C Tech was the right thing to do.

It usually is wise to check with them on most any questionable question. 
Jon E. Wennerberg
 a/k/a Seldom Seen Slim
 Skandia, Michigan
 (that's way up north)
2 Club member x2
Owner of landracing.com

Offline salt27

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With the number plate having a radius instead of being flat why wouldn't it be considered as an aero improvement?

7.B.1 addresses size and shape of the number plate.

It looks ok to me but I'm not an inspector.

Also, the only reason I brought anything up is so there aren't any hang ups during inspection.

Let us know the out come Patrick, this could affect a few of us.

Thanks, Don


Offline Seldom Seen Slim

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Hey Sparky!  Would you care to discuss the difficulties of getting a number plate that'll keep the inspectors happy?

I seem to remember when you and Russ (?) were pitted next to us ten or fifteen years ago and you were dealing with the number plate/aero device hassle. :lol:
Jon E. Wennerberg
 a/k/a Seldom Seen Slim
 Skandia, Michigan
 (that's way up north)
2 Club member x2
Owner of landracing.com

Offline thefrenchowl

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Haven't written yet, will do today!!!

Instead, two packets were waiting for me when I came back from work today...

One from Frederic with a spare Bosch FF1A inductor and points:



And one from Lionel with the newly re-manufactured gearbox of his own Jonghi TJ 4:



A few spare parts and I do hope I won't have to use them in anger!!!

Thanks for your help and trust,

I'll pop at work tomorrow (it's my day off...) to put them on the crate and close it ready for collection...

So long, Patrick
Flat Head Forever

...What exactly are we trying to do here?...