[SEL] Wico type EK magneto help wanted

[Rupert]

	Thanks. That is what I wanted to know. Now, I just need to find time to 
fit a bushing. I'm helping my son build a house. Insulation days this 
week end.

Rupert

frappi at wcoil.com wrote:
> Arnie,
> Mark has undersized bushings made just to do what you mentioned. Fit to a
> shaft thats been worn and trued up. Long as its not worn too bad. If the
> shaft is worn too badly then it will need a new bottom frame, or bush the
> worn shaft, Theres a couple ways to skin that cat.
>  Rupert, As for clearances I'd estimate a couple thou. Should be easy for
> you to whip one out. I assume you will true up the old shaft? No need to
> oversize like we do for other things when compensating for thermal
> expansion. Snug as you can get and slide easy with a speck of lite oil.  
>      Mark
> 
> 
>> Rupert,
>>
>> I haven't seen any replies to this one yet.  The sloppy fit due to wear is
>> a common
>> problem with the Wico EK mags.  And it definitly will affect performance
>> up to and
>> including no spark at all.  The two armature arms must pull off the coils
>> at the
>> same instant with a good SNAP.
>>
>> You should probably be able to true up the shaft and make a custom bushing
>> that is
>> just a slip fit.  OTOH, most of the "mag guys" like Mark's Magnetos will
>> do an
>> exchange of your Wico EK for one that is guarenteed to work (new coils &
>> condenser,
>> new busing, all in proper adjustment, etc.).  The cost of the new exchange
>> mag isn't
>> that much.  If your "repair" doesn't do the job, consider doing the mag
>> exchange.
>>
>> See ya,  Arnie
>>
>> Arnie Fero
>> Pittsburgh, PA
>> fero_ah at city-net.com
>>
>> On Thu, October 22, 2009 1:27 pm, Rupert wrote:
>>> Hello Guys,
>>> 	My son-in-law has a Wico EK series magneto that is not firing
>>> consistently. In other words, it takes more than one trip for it to
>>> fire. He thinks the armature bushing and/or the guide rod is worn as the
>>> fit is very sloppy may be causing the problem.  I can make a new bushing
>>> for him but I need to know what clearances are required. The manual I
>>> have from the "oldengine site" gives data on setting the points but
>>> doesn't say anything about the fit of the armature bushing to the guide
>>> pin.
>>>
>>> 	Does anyone have any data or dimensions of the guide rod and the
>>> armature bushing so I can check it?
>>
>>
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>>
> 
> 
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-- 

yvt

Rupert Wenig
Camrose, Alberta, Canada.	

email: rwenig2 at xplornet.com
	
http://users.xplornet.com/~rwenig/Home/