Re: Hard Rubber - Soft Rocks

Rich B wrote:

> Neil typed:
> 
>> The most effective part of my kit was a tyre inflator which replaced
>> one of the spark plug in my 2.25 petrol engine, and used the engine
>> compression on slow tick-over to rapidly inflate a 205 x 16 from flat.
>> A really magic piece of kit!
> 
> I've always wondered about these devices - aren't you filling the tyre
> with
> petrol fumes?  I know it's not an Icelandic lighter-fluid scenario, but
I
> would be worried about it degrading the rubber, over time.
> 

Like Neil I used one of these and because they are used at tickover there
is
a high depression in the manifold, the air enters the cylinder
unrestricted
via a flap in the spark plug adaptor in preference to being sucked through
the inlet valve.

I've never used one in the V8 because the plugs are less accessible and
easier to cross thread. They were im****ted by Schrader and are still
available in the states but frankly the little electric ones work with
less
fiddling.

AJH