Alive Again
05.01.11: The engine is complete again, albeit with a leaking crankcase gasket. That’s no surprise though as I have re-used it several times now. I’ve a new gasket now and will be fitting it asap. I have had it running as it is and it started fairly easily once I worked out the best choke and throttle settings. I’m still a little concerned about the con-rod bolt torque but we’ll see if she destroys herself with a full power test when the propeller is back on.
I’m still expecting 15-16hp at loaded maximum rpm (~5000rpm) and about 45kg(99lb) thrust if the larger carburettor suits the engine and other mods.
Advertisement
February 5, 2011 at 4:43 pm
I have been watching your development of the gx200 with interest and wonder ifyou will have productions coming available soon from your efforts.
Bob schafer USA
February 5, 2011 at 6:57 pm
Hello Bob,
I’d like to go into production but I think the frame looks too basic to be attractive enough in such a competitive market. I do have more ideas for a better/lighter frame but I have no funds at the moment to follow them through. I think I could make a commercially viable unit for about £1200 and maybe sell for £2200 to give a pre-tax £1000 gross profit. There needs to be a lot more testing before I’d be comfortable with the design, comfort and reliability.
Maybe in a couple of years things could be different
Cheers for your interest,
Regards,
Rob.
February 19, 2011 at 1:30 am
Hello.
We wait new video and new photos of your project.
Especially the variant without a reducer interests.
With the screw 110-120 without a reducer tried?
February 19, 2011 at 8:14 am
Hello, I think to use a 110-120 prop you would need to make sure the engine developed sufficient power in the 2700-3500rpm range. I’m not sure my GX200 will have 13-14hp at these revolutions. Many thanks
)
Robert