[AT] John Deere Projects UPDATES

[Mark Johnson]

Right now, I don't think I need a hand-crank flywheel, as far as I know 
mine is intact - at least, there are no visible cracks in the 'outboard' 
side. Thanks for the info, though!

Having seen the actual weight of the 720D/730D flywheel I wish my cousin 
and I had gone ahead with building the pony cart using two flywheels and 
the 1903 Cadillac axle...just the rotating parts would have weighed 
almost 400 lbs, before we started to build a cart on top of it. You'd 
need a good horse or mule just to pull it empty - it sure wouldn't have 
been a goat cart!

Another 730D memory: in the course of overhauling one of ours, we had to 
replace the main reduction gear on the 'clutch' end of the crank. It is 
'interference fit' with about a -.003 clearance. We heated the 
replacement gear in hot oil for over an hour to get it ready to go on. 
The good news: no more problems with it for at least the next 25 years, 
possibly longer.

Mark J

On 7/3/2020 12:44 AM, Bill Brueck wrote:
>
> Curious you should ask, Mark.  I started the table with the top row 
> being for the H.  But the MPI had blank weight entries for both the 
> flywheel and for the crankshaft.
>
> But…I just happen to have a spare H flywheel so I weighed it.  81 
> pounds.  It came with a pallet of Deere parts and I don’t expect to 
> ever need it so it’s in the scrap iron pile.  If anyone needs a hand 
> crank H flywheel, speak fast…I’ll make you an offer you can’t refuse.  
> Next time grandson comes out looking for something to do we’ll be 
> loading a pickup load of scrap.
>
> I just checked the catalogs again, this time looked up H flywheel 
> assembly with tightener bolts and ring gear.  There’s a weight entry 
> for that: 100 pounds.  The hand-crank one I weighed had the tightening 
> bolts removed and of course no ring gear but that wouldn’t make 19 
> pounds. Curious: a little heavier flywheel for starter vs hand start. 
> The other flywheels in my chart would have all been ring gear models, 
> with possible exception of the D, I don’t remember.
>
> B²
>
> Confusion is a higher state of knowledge than ignorance.
>
> *From:* AT <at-bounces at lists.antique-tractor.com> *On Behalf Of *Mark 
> Johnson
> *Sent:* Wednesday, July 1, 2020 6:51 AM
> *To:* at at lists.antique-tractor.com
> *Subject:* Re: [AT] John Deere Projects UPDATES
>
> Bill:
>
> You wouldn't happen to have the flywheel weight for the H, perchance? 
> At a guess I'd place it at around 100 lbs, since an H is slightly 
> smaller than a B, but I've never seen the figures.
>
> Thanks,
>
> Mark J
>
>
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