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Power Products AH47 Questions


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  #1  
Old 12-03-2018, 12:34:06 PM
Mike Stroz Mike Stroz is offline
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Default Power Products AH47 Questions

Just ordered one of these little engines off ebay for a good price to put into a mini bike project I'm working on, but I have a few questions. I've found very little info on these things on google. First, what size output shaft does it have? I'd assume 5/8" but not sure. Second, I'm planning on using modern synthetic oil in it, should I use the same ratio (16:1 I think) as stock? Or should I stick with straight SAE 30 oil like I use in my Maytags? Third, Does anyone have a muffler/ exhaust for one of these? Mine has a chainsaw type exhaust coming straight out the side which will be right into my ankle when it's on the mini bike. I'd like to get an exhaust that exits forwards toward the spark plug, rearwards toward the carb or down to the ground. Lastly, what kind of horsepower does this make? I've seen people say anywhere from 1.5 to 5 hp, nothing definite. I'll post some pictures when it arrives, I'm pretty excited to put it on something
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Old 12-03-2018, 01:11:12 PM
Bill Sherlock Bill Sherlock is offline
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Default Re: Power Products AH47 Questions

According to information I have the AH-47 engine is rated at 2 HP. They were built from 1948 to 1955.

Bill
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Old 12-03-2018, 01:46:28 PM
Mike Stroz Mike Stroz is offline
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Default Re: Power Products AH47 Questions

Ok thanks. That's a little smaller than I hoped but it should be fine for such a small mini bike frame. I guess I'll keep my eye open for something larger though. I still want to find a Clinton Panther but I can't seem to find any for a decent price
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Old 12-03-2018, 02:21:54 PM
Ken Karrow Ken Karrow is offline
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Default Re: Power Products AH47 Questions

If it were mine, I would not use synthetic, 30 wt non detergent would be my choice.
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Old 12-03-2018, 02:38:06 PM
Mike Stroz Mike Stroz is offline
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Default Re: Power Products AH47 Questions

Ok, I'll use that then. I've got a bunch of old cans of 30w oil from the 40's and 50's I've been using for my Maytags
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Old 12-03-2018, 03:45:00 PM
K-Tron K-Tron is offline
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Default Re: Power Products AH47 Questions

AH-47 is 2hp. They were used in thousands of different chainsaws. 5/8" shaft is likely what it has if it came out of a saw. Beware of which way the engine turns for your project. 16:1 is what I use in my power products engines. Depending on the spec number it will either have needle bearings or a brass connecting rod riding on a steel crankpin. The more oil the better. I run Valvoline TCW-3 mixed with all of my two stroke engines.

Chris
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Old 12-03-2018, 05:37:01 PM
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John Newman, Jr. John Newman, Jr. is offline
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Default Re: Power Products AH47 Questions

I have a couple of different exhaust fittings for these engines. Don't know their origin or remember where I got them, but pictures will show what they are.
One looks like it would accept tubing for a muffler / expansion chamber or just a straight pipe. The other is a shorty, possibly from a chain saw. No baffles or other sound attenuating features, just a cast aluminum deflector of sorts.
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Old 12-03-2018, 06:55:06 PM
Mike Stroz Mike Stroz is offline
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Default Re: Power Products AH47 Questions

Wow, those are some really cool pieces. I like the larger white one a lot! I don't think the original exhaust had much in the way of baffles, mine has a regular chainsaw muffler that's pretty much straight through. If you'd be willing to let one or both of them go I'm definitely interested.
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Old 12-03-2018, 09:09:09 PM
Wayne 440 Wayne 440 is offline
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Default Re: Power Products AH47 Questions

Quote:
Originally Posted by Mike Stroz View Post
Just ordered one of these little engines off ebay for a good price to put into a mini bike project I'm working on...
Hmm, good idea. I have been trying to figure out what to do with this apparently rare Clinton. Maybe I'll make a somewhat more powerful mini bike.

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Old 12-04-2018, 12:01:55 PM
Mike Stroz Mike Stroz is offline
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Default Re: Power Products AH47 Questions

Quote:
Originally Posted by Wayne 440 View Post
Hmm, good idea. I have been trying to figure out what to do with this apparently rare Clinton. Maybe I'll make a somewhat more powerful mini bike.

That would probably be really good in a go kart, might be too wide for a mini bike. But I would be hesitant using that for anything too strenuous. Those 2 cylinders are super rare. Only made for that specific generator for the military as far as I know
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