Hi,

The MDS 1.48 is an awesome engine.

It is turning a Menz 17x8 at 9000 rpm.

20* C, 10% nitro and a Bisson muffler with the crimped ends cut off.

Cutting off the crimped ends gained 500 rpm!

I am using the recommended H-9 4 stroke super plug p/n HAN3011

Unlimited vertical on my 13 lb airplane.

Throttle response and midrange is excellent.

It is easy to tune, and in 4 or 5 gallons of fuel it has yet to quit!

Starts easily with 1 or 2 backward flips.

I have a Perry VP-30 pump on it.

The engine probably does not need a pump, however I put pumps on all my airplanes for a more consistent engine run from the start of the flight to the end. My choice!

Inexpensive too!

John Jeffries