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Onan 10.0CCKAJ want to convert to electric start


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Old 03-12-2017, 08:11:39 PM
DrCharles DrCharles is offline
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Question Onan 10.0CCKAJ want to convert to electric start

My clean, low-hours 10.0 CCKAJ (pull-start) is a real bear to pull, especially in cold weather. So I'm interested in adding a starter motor to save my shoulders and arms. (Recharging the battery would be simple, just plug a battery charger into one of the 120v outlets on the box!)

There are a variety of operator and parts manuals available which are usually "close enough" but I never have found the exact one for this unit.

It seems that CCKA starters (and the bracket that mounts them to the base pan) are readily available. But there isn't any obvious place for an electric starter to go, and I didn't have time to remove the pull starter and fan housing to see where an electric starter might attach.

I'm beginning to think this particular model can't be retrofitted with an electric starter at all! Any ideas besides "sell it and get one with electric start"

thanks
Charles
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Old 03-12-2017, 08:38:54 PM
Wayne 440 Wayne 440 is offline
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Default Re: Onan 10.0CCKAJ want to convert to electric start

If you "don't have time" to look inside the flywheel housing, you probably won't have the time to implement my idea. But if you get tired enough of pulling on it, consider a generator/starter unit as found on old Cub Cadet garden tractors. You could probably fit a V belt around the existing rope pulley well enough to crank it up. I have seen this retrofitted to many engines with a simple lever which tensions the belt and also depresses an old type starter button.
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Old 03-12-2017, 08:54:33 PM
DrCharles DrCharles is offline
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Default Re: Onan 10.0CCKAJ want to convert to electric start

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Originally Posted by Wayne 440 View Post
If you "don't have time" to look inside the flywheel housing, you probably won't have the time to implement my idea.
That's rather harsh... it's been a busy weekend. I didn't mean that I would never have the time!

Quote:
But if you get tired enough of pulling on it, consider a generator/starter unit as found on old Cub Cadet garden tractors. You could probably fit a V belt around the existing rope pulley well enough to crank it up. I have seen this retrofitted to many engines with a simple lever which tensions the belt and also depresses an old type starter button.
Good idea, thanks... but the rope sheave is inside the sheet metal housing that is required to direct cooling air across the cylinder heads. Also the generator is mounted on the Onan "wheelbarrow" cart and that kind of rig would be hard to fit and remain portable.

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Being a revolving armature generator, you might get away with applying 12 volts directly to the commutator brushes. You would not have the benefit of the series winding that exciter cranked sets have, but I have heard of others doing this with success. The worst case would be that you need to help it over the first compression stroke, but after that it ought to spin over just fine like that.
Well, worst case is that I fry a perfectly good 10 kw generator head
I'll do some searching for this. That 16 hp engine takes a fair bit of torque to turn it over compression...
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Old 03-12-2017, 09:19:45 PM
Wayne 440 Wayne 440 is offline
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Default Re: Onan 10.0CCKAJ want to convert to electric start

Hmm, maybe you could make a fixture that engages the notches in the rope pulley (or maybe the flywheel nut) and fits in a 1/2" cordless drill. Along the lines of an Indy car starter.
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Old 03-12-2017, 09:31:04 PM
pegasuspinto pegasuspinto is offline
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Default Re: Onan 10.0CCKAJ want to convert to electric start

Having cranked one over with a drill, that's pretty harsh. Even a 1/2 drill is working it's rump off and you're hanging on for dear life.

In theory, if you had power for a drill, you wouldn't need the gen. I can say a dewalt 18v cordless drill does NOT like this kind of abuse. It's getting very hot within seconds.

The standard starter bolts to the oil pan underneath the right hand cylinder head, and engages teeth on the flywheel. If you have flywheel teeth and/or holes in the pan, who knows. I think at most you would need a toothy flywheel, a bolty oil pan, a cranky starter, and the fan shroud to clear it all.
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Old 03-12-2017, 09:43:23 PM
DrCharles DrCharles is offline
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Default Re: Onan 10.0CCKAJ want to convert to electric start

My 1/2" drill motor won't do me much good, since the only way I'd be firing up this generator is if the power's out!

I could swear the flywheel is already toothy but will need to look again. As I get older I start to experience CRS

The illustrations on the CCK manual for units with a starter do show a fan shroud that has a circular relief in the lower right corner, now that you mention it... might be hard to find one of those, although I could do some sheet metal work if needed.
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Old 03-12-2017, 08:39:58 PM
Vanman Vanman is offline
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Default Re: Onan 10.0CCKAJ want to convert to electric start

Being a revolving armature generator, you might get away with applying 12 volts directly to the commutator brushes. You would not have the benefit of the series winding that exciter cranked sets have, but I have heard of others doing this with success. The worst case would be that you need to help it over the first compression stroke, but after that it ought to spin over just fine like that.

Keith
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