Need advise on a gas engine setup for a 60" Apache with twin MHZ Z-drives

[Ain'tSkered racing]

That was a extreme cases but heat race trim we are in the 60 plus range

 

[John Beardslee]

Here you go, this should push it along nicely.



I made custom 4 bladed X 470 props for this twin screw setup. If I remember right its a 120cc Polaris engine.

Thanks, John

 

[JohnDefusco]

I'm pretty sure those drives will only hold like a 5hp motor tops , the new drive they have a step up from yours holds 6/7HP I was going to build almost the same set up for a 60 epic and scratched the idea and just used a stinger

 

[rhomodel]

Make it as simple as you can: 1 engine per drive and you don't have to worry on cases breaking, losses in gearboxes etc. The speed of these hulls with drives aren't lightspeed: they just look cool and that is what you should expect of it cool looks, but don't count on speed: I see in the powerboat meeting in Heilbronn every year that a single engine mono set-up for heat racing will outrun these kind of set-ups..