Gearbox and Ignition problems

[ThomasSwiss]

Hi Thomas
I also live in Switzerland (Fribourg) and I'd be glad to help in any way I can.
My Nippy has a modified 4-speed gearbox to raise the ratios to Nippy specifications (supposedly). It is also noisy on the first three speeds due to straight cut gears. But it's a noisy car anyway :-), I wear now ear protectors (Pamir) to drive it.

Hello Steve Berg

do you know an Austin Specialist in Switzerland?

I live near Schaffhausen and I wear ear protectors to.

Regards Thomas

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Sounds to me like you have a set of straight cut close ratio gears, these are commonly fitted to specials intended for racing or hillclimbing, Don Rawson used to make them but I do not know if they are still produced. They are quite noisy until you get into top and for spirited a road car I would prefer a Nippy or Super Accessory type CR set such as Andrew Bird now makes, being blown you can probably get away with wider ratios than a natural aspirated car.

Hi Ian
Thank you for the answers.
The seven was built by Don Ravson twenty years ago.
This will be the reason for the noisy transmission.

Regards Thomas

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Any older/vintage/classic car will be much more noisy with little or no sound insulation compared to a "modern" car,especially gearbox.Many conversions use corrected tooth form gears to achieve the different ratio.
You say you have a coil conversion,Is it one using a bosch 009 type distributor?.If it hasn't been modified to reduce its advance and bob weight springs its likely to have too much advance and too early.
As we all know its hard to diagnose something like this via computer but it should rev to 6,000 or so subject how much boost the cozette gives and carb and ignition settings being right.The car should start easily and be very lively!
Are you sure the rev counter is reading correctly ?

Hi
The car start easily and isn't very lively!  the seven runs like a 20bhp seven
At 4200 rpm the Seven runs 60mph, I think the rev counter and speedometer is ok.

Regards Thomas