|Adding some oomph to your magneto
Post Number: 31
|Posted on Saturday, October 18, 2008 - 08:41 am: ||
I'd love some advice on reconditioning magnetos.
I've got a Stuart R3M which uses a Lucas SR1 magneto. Having found the one that came with it had a v weak spark, I've got hold of a second. However, after a year of only running occasionally in my shed, this magneto has also now got a v weak spark.
Having compared to a friend's new SR1, both these are clearly well below what's needed, and sure enough don't have the oomph to start my R3M any more. Does anyone have any advice on what might be the cause, how I could get these back to their former glory, and whether you can protect a magneto so if left in a boat etc it won't run out of power.
Thanks very much
Post Number: 89
|Posted on Sunday, October 19, 2008 - 04:54 pm: ||
Ben , if you are not using your boat,NEVER leave
the magneto in it.Firstly because some low life
will steal it.Secondly and more important.
magnetos hate moisture,When not in use always store
it in a warm dry place
Handle them gently as sharp knocks etc can affect
the magnet which inturn will reduce the spark output
Dont over oil the bearings,check the points for
correct gap and cleaness,the condensor can also
contribute to poor spark(bosch #GD209,available
from most car part shops,early Holden /mitsubishi
Make sure the entire unit is super clean inside and out,no cracks in the cap,leads,or the wire from points,condensor etc.
Check for tracking accross the cap
Tests the leads for continuity(leads do brake
down with age and moisture,check the connections
at both ends of the leads
Make sure you have a good earth between the maggy and engine,clean from rust oil,paint etc
Best of luck,Todd
Post Number: 32
|Posted on Saturday, November 01, 2008 - 04:30 am: ||
thanks for that Todd. Lots of good tips. I'll get down to the shed, give it a once-over then leave it somewhere cosy for the winter!