I am trying to find out what engines are suggested to replace multiple OS 120 Surpass II engines? I want to keep size and weight increases to a minimum, but maximum thrust is very important as well.

Regards,

Al Parry !QUOT!Eaglewatch!QUOT!
[email protected]

You might want to check with davis diesel on this one. one or the larger 1.08 and up
OS or super tigers might fill the bill,

Al:

Toss the OS's and install Saito 1.50 engines. Weight about the same, fuel consumption not a lot higher, but the power will be raised nicely.

Bill.

Irvine 1.50's you won't be disapointed!!

Forget The Saito 150s unless u plan on doing in flight refueling. Those Saitos drink fuel like u wouldn`t believe. Best bet is 2s diesel. They will swing over a tree with no problem in a smaller size for a longer time on less fuel. Now how is that for losing weight. eg you can use 2 75s diesels and get the same power as the 120s Fs or use 91s diesel 2s and get more power than the 120 Fs. All using no more that 8 oz tanks that will last about 20 mins or more depend on your settings .

That is absolutely false about the Saitos. When set up correctly they don't burn any more than others their size. I have about 12 Diesels and know that two .75s would not come aywhere near the power he's looking for, two Webra 120s with Davis heads would be more like it.