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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

Flush flywheel key removal


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  #1  
Old 09-06-2006, 10:58:11 AM
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Jim Sherman Jim Sherman is offline
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Photo Flush flywheel key removal

Just thought I'd post a couple pictures of how I removed the keys on my 1.5HP Fairbanks Morse (one anyway.... still need to use a slide hammer on the gov side key since I ran out of throw on my allthread on that side)

The only reason the flywheels are coming off is the crank has a slight bend and I'm sending it off to one of the site sponsers Craig Anderson for a little fine tuning.

I used a pice of 3/8" all thread welded to the end of the key, it doesn't take a whole bunch of weld to keep it glued to the end of the key, also the vise grips are just on loose to act as a guide and keep the all thread from walking up and out of the keyway a better collar would be easy to build so the vise grips wouldn't be needed for that.





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Last edited by Jim Sherman; 09-06-2006 at 11:17:37 AM.
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Old 09-06-2006, 01:29:14 PM
Kevin O. Pulver Kevin O. Pulver is offline
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Default Re: Flush flywheel key removal

Thanks Jim,
That's worth 3000 words (plus your slight commentary) and more helpful than anything I've read yet! I will put it to use myself. Thanks again!
Kevin
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Old 09-06-2006, 04:27:51 PM
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Terry Beasley Terry Beasley is offline
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Default Re: Flush flywheel key removal

I just removed the flywheels on my 4HP Associated and had to drill the key to remove it. I think the split flywheels must be a little easier. The solid hub wheels had a heck of a grip on the key.
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Old 09-06-2006, 04:44:54 PM
R. Goodacre R. Goodacre is offline
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Default Re: Flush flywheel key removal

Many thanks for taking the time to take some pictures, they show a very good idea for the removal of these stubborn keys.
Certainly one to bear in mind if I ever need to remove the keys on my Associated Hired Man!
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Old 09-06-2006, 09:05:17 PM
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Photo Re: Flush flywheel key removal

Here is the slide hammer arrangement, I welded a 3/8" coupling nut to a 5/8" coupling nut so the slide hammer & welded all-thread could be screwed together.

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Old 09-06-2006, 09:09:28 PM
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Default Re: Flush flywheel key removal

Quote:
Originally Posted by Terry Beasley
I just removed the flywheels on my 4HP Associated and had to drill the key to remove it. I think the split flywheels must be a little easier. The solid hub wheels had a heck of a grip on the key.
Hubs that are not split would be a little more difficult, I would think this method should work on them too provided the keys were not overly driven in. I have drilled them out in the past too and it's not much fun either.
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Old 09-06-2006, 09:11:29 PM
JHFoster JHFoster is offline
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Default Re: Flush flywheel key removal

Why not just correct the bent crank with it in the engine?
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Old 09-06-2006, 09:14:54 PM
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Default Re: Flush flywheel key removal

I thought about that, using the method of jacking on the end of the crank but decided not too and go the postive way, had the keys given me a tough time (like having to drill them out) I probably would have done it in myself with the flywheels on. I have read pros & cons in the archives.
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