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Onan 10.0CCKAJ want to convert to electric start


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  #11  
Old 03-12-2017, 11:33:01 PM
Vanman Vanman is offline
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Default Re: Onan 10.0CCKAJ want to convert to electric start

Well, a ten kW generator has a lot of thermal mass, so it would never fry instantly.

If it doesn't turn over, you would immediately disconnect the battery. If it does turn over, the engine will start long before the generator would overheat.

It would be interesting to know if the armature is a different part number than that of one from an exciter cranked set though.
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  #12  
Old 03-12-2017, 11:55:45 PM
pegasuspinto pegasuspinto is online now
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Default Re: Onan 10.0CCKAJ want to convert to electric start

Exciter crank has an entirely different set of heavy windings on a set of commutators. Two sets of brushes.
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Old 03-13-2017, 01:48:29 AM
Vanman Vanman is offline
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Default Re: Onan 10.0CCKAJ want to convert to electric start

I'd imagine that even the manual start sets have an exciter, otherwise it would have to be excited via a rectifier, but I'm not as familiar with Onans. So the question is whether or not they bothered making a special armature with lighter exciter windings for the manual start sets. I'll bet they didn't.

On the Kohlers I collect, the manual start (hand crank) and electric start (exciter crank) sets use the same armature. On some of the manual Kohlers, even the series winding is present, with it's lead merely taped off!

I'm only *assuming* that the Onan generator on a manual start set does not have a series winding. But maybe, just like the Kohler, it's just sitting there ready to go!

Have to take the covers off and take a look, and see what's there. Might just be surprised.

Keith
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Old 03-13-2017, 05:25:46 AM
Handyhiker1 Handyhiker1 is offline
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Default Re: Onan 10.0CCKAJ want to convert to electric start

On my 5.0cck contractor model, it is pull start also but it does have the brushes for the electric start just like my 5.0cck that is exciter cranked. I have thought about trying to hook it up to make it electric start.
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Old 03-13-2017, 08:53:45 AM
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Default Re: Onan 10.0CCKAJ want to convert to electric start

I believe the pull start models. All had the start side on the rotor. Just didn't use it. Because pull start was supposed to be used as contractor models. Where a battery would just be in the way.
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Old 03-13-2017, 09:29:16 AM
gnucklehead gnucklehead is offline
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Default Re: Onan 10.0CCKAJ want to convert to electric start

Would need to have a shunt and a series field winding for exciter cranking

Edit: found your old thread: It is a 3600RPM round head..
https://www.smokstak.com/forum/showthread.php?p=722239

Last edited by gnucklehead; 03-13-2017 at 11:02:43 AM.
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Old 03-13-2017, 12:05:29 PM
Vanman Vanman is offline
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Default Re: Onan 10.0CCKAJ want to convert to electric start

Well, that's the big question- is the series winding truly *necessary*. I have heard of people successfully using a shunt wound exciter. Like I said before, it may need a bit of help over the first compression stroke.
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Old 03-13-2017, 07:44:27 PM
David C David C is offline
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Default Re: Onan 10.0CCKAJ want to convert to electric start

Quote:
Originally Posted by DrCharles View Post
Is that an exciter-start type? What's it weigh?
I have a FedEx shipping account and can often get decent rates...
The parts are at the shop and I will have to take a scale that will go high enough to handle the weight. I would guess the armature is around 50-60 pounds and the stator is probably at least a 100 pounds. I can get some pictures of all of the internals and you can compare them to what you have. You might be lucky and have all of the windings to make it electric start. I usually make it to the shop on weekends.

David C.
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Old 03-13-2017, 08:00:59 PM
DrCharles DrCharles is offline
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Default Re: Onan 10.0CCKAJ want to convert to electric start

Wow... I didn't know the generator head itself weighed that much! I know my entire generator is listed at 400 lbs (and when moving it on its 2-wheel cart I believe that) but I assumed most of that was cast-iron engine.

The earlier discussion (about possibly all the armatures being the same) certainly got my attention. I'm definitely interested in seeing what yours looks like. When I get a chance I'll pull the dust cover again and look closely at the brush area. Maybe I'll get lucky
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Old 03-13-2017, 08:31:29 PM
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Default Re: Onan 10.0CCKAJ want to convert to electric start

Doc, Best way, in my opinion, is to look on the parts books for your set and the parts book for the equivalent set like yours but electric start. Check to see if the rotor/armature and stator are the same part numbers.
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