Flat bottom v drive leaps and hops uncontrollably at full throttle no matter what I d

**kts96b** · 12-15-2016, 09:32 AM

I have a 73 Sanger 18'10" sk4 filling flat. That just won't take a set. Is this a prop shape issue? I even put a 4" longer plate. I

**David** · 12-19-2016, 08:10 PM

Not too many V drives now except wakeboard boats. Have you tried Wilkes Marine? You can get their contact info thru Google. Jim Wilkes used to write about V drives in Hotboat magazine.

**Capt.Insane-o** · 12-19-2016, 08:15 PM

go here.....http://www.performanceboats.com/v-drives/

**dagodiver** · 12-19-2016, 08:26 PM

I've owned and rigged a bunch. With no other info and if your turning the correct prop it's a weight issue. I've moved big blocks 6-8 inches forward to get them to settle down.

Dago

**kts96b** · 01-03-2017, 07:04 AM

Originally Posted by kts96b

I have a 73 Sanger 18'10" sk4 filling flat. That just won't take a set. Is this a prop shape issue? I even put a 4" longer plate. I

18 percent box and a 11 1/2 15 pitch Mikel chemise stainless aerospace metal prop. Blades are straight they don't reverse curve like other props due. Is this the wrong pitch for 18s?

**150aintenuff** · 01-10-2017, 01:58 AM

depends on your HP and livable engine rpm... ive got one with a 1:1 and a 13x17 to pull the engine down to safe pontiac RPM id wanna see it run but its most definetly a weight in wrong spot or to much stern lift issue... a bow will lift pretty easy until about 50 mph then the cav plates really start pushing back down and can put you into a uncontrollable sine wave of stern lift bow dig and lift... set the plates TRUE LEVEL then slightly up and slightly down to see which way hop improves ...