"Leon van Dommelen" > wrote in message
...
> "J Brockley" > wrote:
>
>>
>>"Zog The Undeniable" > wrote in message
...
>>> zenmartini wrote:
>>>> I know the timing belt is supposed to be replaced at 60k. My 2000 is
>>>> at 75k but the belt is in good condition... no nicks etc. Money is
>>>> tight at the moment... how much longer can I go before this has to be
>>>> replaced... I know that I'll be stuck wherever I am but there is no
>>>> damage that can occur right?
>>>>
>>> The biggest risk is that it fails halfway through an overtaking
>>> manoeuvre.
>>> However, and for reasons I don't understand, the Miata/MX-5 belts
>>> normally
>>> fail when the engine is first fired up.
>>Inertia. The two I had fail (not in MX5) occurred at startup and in one
>>case
>>when warm. I guess when started there is a sudden change in lateral
>>tension
>>on the teeth from nothing to something high before it calms down and
>>everything gets moving. I guess the only other time the rate of change is
>>approached is when you put your foot down hard.
>
> Did they fail when you were cranking the engine or when it started?
>
> Leon
> --
Cranking. Never seen one snapped but seen where teeth start to part company
with belt.