Cutting Spur Gears

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Subject Author Date
Cutting Spur Gears Steve 01-12-2008
Posted by on January 14, 2008, 2:38 pm
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> If you want lightweight, quiet gears how about tufnol?
>
> > Russell
>
> Excellent stuff, British motorbikes used to use it for magneto drive gears,
> but it would need to be *big* to cope with spring operated valves. Maybe OK
> for desmo?

The 1930 Talbot sports car I used to own used tufnol gears for the
camshaft drive, although I must admit that the racing team used steel
gears when they won their class at Le Mans.

Russell.

Posted by Steve R. on January 14, 2008, 9:36 pm
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>> If you want lightweight, quiet gears how about tufnol?
>>
>> > Russell
>>
>> Excellent stuff, British motorbikes used to use it for magneto drive
>> gears,
>> but it would need to be *big* to cope with spring operated valves. Maybe
>> OK
>> for desmo?
>
> The 1930 Talbot sports car I used to own used tufnol gears for the
> camshaft drive, although I must admit that the racing team used steel
> gears when they won their class at Le Mans.
>
> Russell.

Didn't the old flathead Morris Minor engine use a Tufnol timing gear on the
camshaft? Perhaps it was the Oxford, or both models??

Steve R.



--
Reply address munged to bugger up spammers



Posted by Ben on January 14, 2008, 10:08 pm
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>
>>> If you want lightweight, quiet gears how about tufnol?
>>>
>>> > Russell
>>>
>>> Excellent stuff, British motorbikes used to use it for magneto drive
>>> gears,
>>> but it would need to be *big* to cope with spring operated valves. Maybe
>>> OK
>>> for desmo?
>>
>> The 1930 Talbot sports car I used to own used tufnol gears for the
>> camshaft drive, although I must admit that the racing team used steel
>> gears when they won their class at Le Mans.
>>
>> Russell.
>
> Didn't the old flathead Morris Minor engine use a Tufnol timing gear on
> the camshaft? Perhaps it was the Oxford, or both models??
>
> Steve R.
>
The Ford V4 & V6's in the 1960 had a camshaft Tufnol gear.
Ben
>
>



Posted by Steve on January 19, 2008, 8:50 am
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> If you want lightweight, quiet gears how about tufnol?
>> Russell
>
> Excellent stuff, British motorbikes used to use it for magneto drive
> gears, but it would need to be *big* to cope with spring operated valves.
> Maybe OK for desmo?
>
The cylinders are only 5cc each and the spring will be wound from 24swg to
give you an idea of loading. Current design has the gears at 6mm wide.

Steve


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