On Fri, 10 Oct 2014 18:57:04 -0700 (PDT), Ivan Vegvary
wrote:

Want to purchase a vertical shaft small engine (probably HF) to replace the unobtainable one that goes on my "Deep Rock" well drilling setup.
Some time back there was mention in this group that these engines will not run without the flywheel effect of lawn mower blades etc.
Is this true. There is no mention of this in the specs.
In my case the only flywheel effect would be some clutch parts weighing just a few ounces.
clarification would be appreciated. Let's not get off topic with a HF rant.
Thanks.
Ivan Vegvary
Greetings Ivan,
I have one of those Deep Rock well drillers. It uses a two stroke
engine. I'm pretty sure that the Flymo mowers used the same engine. So
maybe a garage sale mower might get what you want. Regarding the
flywheel problem, if an engine can power a log splitter or pressure
washer pump attached directly to the shaft the engine will work for
your well driller. If the engine is made to power a mower that has a
clutch of some sort that disconnects the engine from the blade(s) it
will also work. But if the engine is made to power a load that acts as
a flywheel it will not be safe to use. The engine will try to run
backwards if the starter cord is not pulled fast enough and will
violently yank the handle from your hand. If you can pull it really
fast, and if the motor never gets bogged down while in use, you might
get away with an engine meant for a rotary mower. So check out the HF
engine and see if it is made to power loads like a log splitter pump.
Cheers,
Eric