I have a Formula with Kaama drives. I've only docked it three times so far, but two were perfect and one left a bit to be desired. I have twin engines, but I come in with one in neutral. Even though the other engine isn't running, the other drive may still act to help with rudder control.

Have a look at the video on www.pulsedrive.net it has a 21' single engine backing in circles, decide for yourself

Does Marc at BAM have specially treated gears for a Merc #2 drive???

Kaama, sorry no gears for a #2, also the TRS gears are on hold for now. Had a bad experience with a heat treater and decided to work on some new gears altogether. Taking longer than I planned (just like everything else)

I have a 604 with 725h.p. now and want to put a blower on it later.

If you want stay with a TRS Drive you will have to upgrade to a Borg Warner Velvet Drive 72C transmission that has been modified. They are 5" longer than the Merc trans you may have to modify the back seat to make it fit!

P.S. I know where a whole setup is for sale to do the conversion.

Rob

Lots of Horsepower
 

You do know that Pulse-Drive gives you the 5 Year warranty with this horsepower and Huber upgrade goes to 900 hp with a one year warranty