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Hit & Miss Gas Engine Discussion Meet collectors of hit and miss engines, ask questions about collecting, restoring and showing antique flywheel engines.

Hit & Miss Gas Engine Discussion

Witte Engine Balance


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  #1  
Old 09-12-2019, 05:32:59 PM
Motoman Motoman is offline
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Default Witte Engine Balance

I have a 1914 Witte 2hp motor. It has been in my family since new, and to the best of my knowledge has never been disassembled. It did see a lot of abuse. I have managed to get the engine running, but it jumps around like crazy. I am thinking it is somehow out of balance, but I don’t understand how. Any ideas?
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Old 09-12-2019, 05:53:18 PM
Barnbikes Barnbikes is offline
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Default Re: Witte engine balance

Magneto or battery?

Sounds like a timing issue on ignition.
If it has a Wico mag which way is the retard/advance lever under the mag?
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Old 09-12-2019, 06:13:45 PM
AussieIron AussieIron is offline
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Default Re: Witte engine balance

Agree, may be timing, they will bounce around if out too far.
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Old 09-12-2019, 06:15:23 PM
Motoman Motoman is offline
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Default Re: Witte engine balance

The engine has a wick mag. I was not aware that there was a retard advance lever. Is it easy to identify it?
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Old 09-12-2019, 08:30:24 PM
Jeremy Hartle Jeremy Hartle is offline
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Default Re: Witte engine balance

Should be on the trip mechanism. Depends on what trip style you have as to where it is.
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Old 09-12-2019, 08:36:17 PM
ScooterBob ScooterBob is offline
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Default Re: Witte engine balance

Quote:
Originally Posted by Motoman View Post
I have managed to get the engine running, but it jumps around like crazy.
How fast is it running? Too fast will make them jump. An IHC model M engine will jump straight up and down starting about 100 rpm over rated speed. 600 rpm should be about max, the tag will tell you for sure.
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Old 09-12-2019, 09:53:23 PM
Foseng Foseng is offline
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Default Re: Witte engine balance

If you have not run it before it maybe that the flywheels are incorrectly fitted. Need a photograph so the experts can tell. I once had an engine where a flywheel had been removed and fitted the wrong way around.

Dave
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Old 09-13-2019, 02:38:51 AM
gasenginerick gasenginerick is offline
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Default Re: Witte engine balance

I had a 1915 2 HP headless Witte and even running just below rated speed the wheels would rock back and forth on the cart more than some of my other engines Bob is probably right; the engine is just running too fast.
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Old 09-13-2019, 06:18:37 AM
Barnbikes Barnbikes is offline
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Default Re: Witte engine balance

Quote:
Originally Posted by Motoman View Post
The engine has a wick mag. I was not aware that there was a retard advance lever. Is it easy to identify it?
https://www.old-engine.com/maghma.htm
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Old 09-13-2019, 07:48:23 AM
ScooterBob ScooterBob is offline
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Default Re: Witte engine balance

One more thought, is is sitting on solid ground or on a cart with solid wheels , or is it on a cart with air filled tires? Air filled tires are a no no.
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