BZM gas engine in a rigger

[john bass]

can anyone help me withe placing one of these engines in a gas roadrunner 5 in wide tub

 

[Mike Hughes]

You will have to modify the tub. I had to on my own design boat. It was setup with zen originally. The reed valve coming out the side will hit the tub side. I cut down into the rail to relieve it enough for the reed valve to clear. I then glued a sheet of carbon on that side and bottom of tub to strengthen it back up. You will probably have to modify the cowl as well.
Mike

 

[john bass]

ok that is what I thought.....did you leave the engine in the same place front to back??? I guess I mean same balance point ???

 

[Buckshot]

I left the engine in the same location, worked the turn fin to suit added weight.