Prop question

[Rob LaMoy]

OK no jack nuts here.

I've got an '89 Johnson GT 150, with a 3 blade Raker, 14 1/2 X 24. I WAS running WOT @ 5200 rpms and 52-55 mph, BEFORE the prop ding! Got the prop fixed and recupped, but lost 200 rpms and 2 mph. It's back in the prop shop, I think they cupped it too much and I can trim it all the way out, so that explains the loss. Will keep you updated. Anyhow, what if I went to a 4 blade, size it down and up the pitch? I know that normally I would gain rpm's but lose top end, but I've heard that in rare occasions, it creates more lift in the transom thus reducing drag and increasing speed. Since my boat is so narrow, I thought, maybe I'd try it. Plus with 4 blades, blowout is pretty well minimized! Any thoughts? I want my cake and to eat it too. More rpm's, more speed, and better bite in the water. Whatta ya say folks?

 

[David Jordan]

Rob

On my 1800tf year 1989, johnson fastrike 150 year 1995

I'm running an omc renagade 4 blade SS prop 13.5x23

WOT 58MPH gps @5400rpm. My prop center is 1.5" below the pad with out a jack plate. Max theoretical speed is 62mph for that setup so the best I could do is probably 1mph more with a jack plate.



It sounds like you need a new prop shop. They over cupped your prop. They screwed up. You would go to a 23" SS 4 blade to equal your 3 blade. Anyways a 24 looks a little big for the 150 since your wot is 5200

 

[Rob LaMoy]

That's what Tracker factory rigged it with though. I am thinking of trying Cabela's 4-blade unless Prez can cut me a deal better than $350. Hint! I will probably buy one regardless this year, so I at least have a back up. Plus that way I can play with the different props until I find one I like. 58 mph is what I am looking for. That would be great. But I can't get to 5400 rpm's, plus I think I will raise my motor a little. Thought about the jack plate, but with that older transom, I don't want to risk it for 2 mph.

Thanks for the input.

 

[Rob LaMoy]

Oh yeah, plus your Faststrike is a faster engine than my GT. Not too mention about 50 lbs lighter!

 

[Ken Neeley]

Rob...call Craig...248-333-0997 Tell him I said to give you a 10% Chief of Staff discount.

 

[Thomas Macaluso]

Hey Rob you have to be doing better than 60 if you want to catch me this year . I have just got my prop redone so I should be back to hitting around 70 again . I guess you be eating my rooster tail again this spring( just kidding ) we'll see you in May. We'll be up around 19th . By the way we booked a room at the anchor inn for that friday night befoe the rally . Pioneer homes don't allow dogs no more

 

[Rob LaMoy]

Yeah, I've been having problems with them lately. Not very hospitable lately. I've been sending everyone to the Stonehelm by the mobil station. Just remember when your zingin along at 70 that you paid 10X as much for your boat and I'm only 10 mph behind! LOL I'll get there, may take a little longer, but I'll get there. In rough water maybe a little longer still, but I'LL GET THERE! See you in May, bring a spare prop and lower unit! LOL

 

[Thomas Macaluso]

Actually we might not be going that fast I'm bringing up a buddy of mine and he is a big one. 340 + pound cigar smoking mason. you know the type pants falling half way down as he walks around with his butt falling out . horrble sight. In fact I'd hate to see him fall out of the boat when we're doing 70 . He look like one of those dam busting bombs they used during WWII skipping across the water . Or having him hit the causeway could be one way to get another openning.

 

[Rob LaMoy]

Guess I'll have to try it. Will call Craig to see what he can do on price. Cabela's is only $350....hint!