I flew my T33 converted to JPX power and it was quite heavy and with only about 12 pounds of thrust. Any of the current 6kiloo engines should be fine off a hard runway, (PST 600, Wren 54, JetCat P60). P70 should be fine off grass but it depend on the grass !!

Strange to hear that a RAM 500 won't fly a BobCat off grass with a RAM 500, mine was, and is NO problem off our short bumpy grass strip with the RAM 500 and is even better with its PST 600.

KK replied to your PM,

Regards,

David Gladwin.