Was thinking of installing the new bme 90 in a 60 or 40 size ucando,anyone using this engine?how does it run?will it last as long as other gas engines?will it fit in a ucando?Thanks.

Sent Pm

http://www.rcuniverse.com/market/item.cfm?itemId=198298.

Although I haven't run the BME 90, I have had U-CAN-DO 60s with 90-91 glow engines installed.
IMO a 90 gas engines will not do the job because of less power than glow and the added weight of the ignition system. The 90 glow engines I had installed on the UCDs were more than adequate and pulled the aircraft with authority. However, the best combination I had was an OS 120 FS. That engine/airplane combination allowed you to do anything you wanted with power to spare. I have been contemplating a U-CAN-DO 60 with an OS 108 as that combination should be very interesting.

I suggest you spend your money on a glow engine.

Regards,
doubledee

Has anyone tried the ucando 40size with the o.s. 50sx??Will this motor pull the plane adequately??

Yes, the OS 50SX will pull the plane adequately. The YS 63 will pull the plane with authority. Likewise, the YS 91/110 will pull the UCD 60 straight up from a hover while weighing 5-6 oz less than other 120 four strokes.

put it on the .40 size. I'm putting a glow .90 on a sig fun fly now. The BME is next when the cash flow allows.

I have an U-Can-Do 60 with a Webra 120 speed and APC 17x6 prop. It is just enough power for 3D and in my opinion anything less will be marginal.
I also have a friend with an 40 size U-Can-Do and a Supertigre 90 and it is a very nice combo. I guess the BME 90 will be good in the 40 size but never in the 60 size.
Andres