[SEL] FM Mdl Z Style C 3HP

[Alan Bowen]

Hi Jim,

I would figure it is just a bearing problem.
The FBM ZC 52 that I traded off had one bad bearing.  It was the side that had the heavy clutch
pulley and had spent years belted up to an oil well in Texas.  

That one flywheel whould hop around and wobble so much that the whole engine would take off at a
good fast walking speed across the yard.  Jumping and bucking like that it was a real challenge to
shut it down without it landing on my feet.  I was going to fix it, but then I figured that if I
went to all that trouble I still would have a boring, enclosed crank, throttle governed engine
that I didn't like.  When I found a guy that wanted it in trade for a nice, hot, Webster mag and
bracket for my 1918, 1-1/2HP, H&M Hercules E I was glad to trade it off.

Download a catalog from HitnMiss, Find the item number for your bearing and see if that fixes
things.  IMHO it should.   1/16 inch is a wobble. That is just a flinch.  You would have got
really excited if you were as close as I was to my raging beast. After I got it shut down I
grabbed that clutch pulley and I could lift it at least a half inch because of the slop.

Alan Bowen
Williamsburg, Michigan


--- Jim Jirik <jimjirik at earthlink.net> wrote:
> I took a tape to the flywheels and measured between them in different positions.  At most places
> it measured 17-1/4", but there was a place that it was 1/16th more.  Is that enough to assume a
> bent shaft?  And to let you know, it is only the one flywheel that wobbles.  The other seems to
> run true.  
> 
> Jim Jirik
> 
> -----Original Message-----
> From: kerogas at sbcglobal.net
> Sent: Mar 14, 2005 4:56 PM
> To: The SEL email discussion list <sel at lists.stationary-engine.com>
> Subject: Re: [SEL] FM Mdl Z Style C 3HP
> 
> 
>  .
> > If you doubt the ability of the wheel to take the stress, dont do it.
> > The shafts are mostly mild steel and, if it bent cold, it will come back
> > cold too. If you apply heat, it will bend in a new spot. It changes things
> > so much, that without a huge press, you will go nowhere  .
> 
> 
> 
> Yes ! You get to rap it smartly with a pein !
> 
> If the mains are worn enough
> the con rod could push the crank to and fro , up and down .
> the flywheels would appear to wobble , (actually jump around and
> ammer  )but not just ONE of them
> Both wheels will have to flop around before it could be considerd to have
> anything to do with bearings .
>  You want to prove it to yourself  ? take a tape measure and measure
> between the wheels,  roll the motor around
> 180  degrees and measure again  . the numbers will be different if the crank
> is bent .
> One of the things I carry a tape at swaps for is  to watch for bent cranks .
> They throw em off the truck onto the ground
> at thats it .  Enjoy your new toy .
> 
> 
> Chuck ®
> http://royalcrossfarm.com/essentials.htm



		
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