Richard,
An excellent 2 penny=99s worth!
The purpose of the safety wire is to limit the extension of the
spring, preventing it opening sufficiently to allow it jump off the
lugs. If done correctly, the spring should not be able to escape, no
matter which way round it is assembled (unless something breaks). As
with so many things, it is better to address the cause of the problem
rather than the symptoms. It is the violent opening and closing of
the exhaust expansion joint that is probably responsible for the
spring =9Cjumping=9D off. Assuming that the ignition is timed
correctly and the carburettors are balanced, this will only occur
when the Rotax shakes its head during start-up, and to a lesser
degree during shut-down. I would hazard a guess that the true
solution to the problem would be Mark Burton=99s excellent =9CS
oft
Start=9D module.
Nigel
On Wed 04/01/12 21:28 , R Holder rholder@avnet.co.uk sent:
On 04/01/2012 21:06, Nigel Graham wrote:
> Graeme,
>
> See the attached photo for a good way to safety wire the
> exhaust springs. This is how the CSA Sport Cruiser boys do it.
>
> Nigel
One of the reasons this spring as shown needs a safety
wire is that the spring is on the wrong way round. The
openings face the lugs. So that it is easier to get the
spring on, and easier for it to jump off.
All my springs are put on the harder way with the spring
end openings away from the lug.
my 2 penny worth
Richard Holder
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