Prop to try? Same post, both sites.

[Greg Guimond]

Rev4's solve a lot of problems. I'm sure your TRS drive is deeper than Patrick's Bravo is at 7" below the keel of his 22 Classic. Time to sell all your other props and find a used Rev4 as a spare.

[Greg Guimond]

Long-winded Bill is back. If anyone has a prop that might be interesting to try, and are willing to let me try it, let me know.

So did the Merc Rev4 prop end up curing all your Critter's speed and handling problems?

[Just Say N20]

The bottom line is yes. The boat liked the prop. Felt like a really solid bite. That prop appears to have a lot of rake.

HOWEVER, a stock 25" pitch is not enough. It still allowed the engine to spin to 5,600 - 5,700.

I have since traded a Hydromotive Intimidator Q-IV 24" for the same prop that started life as a 28" pitch, and is stamped that it was reworked to a 26.5". That concerned me, as my experience has been that most people will only try and change a S/S prop about an inch of pitch.

Anyway, the boat liked the Q-IV about 90% as well as the Rev 4. But, it was about 2 mph faster through out the range above 2,500 rpms. I had to trim like a crazy person to get the rpms to 5,450. Normal trim at WOT was about 5,200. This is right where I would like to be. Slip at WOT was just over 15%.

Air/Fuel ratios, and exhaust temps were right where they should be. Actually the exhaust temp at WOT was 1,100, and Keith suggested I could go to 1,250. That means I could most likely add some timing. However, not making my living driving this, I would rather run a little less timing, and not have things go BANG!

[Greg Guimond]

Maybe trade the 25" Rev4 for a 27" and call it a day. Keep the Hydromotive Intimidator Q-IV 26.5" you have as a backup prop.