More Prop Issues on 20v

[Bandsecurity]

I am continuing to have prop issues on my 20v (2007). I was told by everyone, including ACME that I should have the ACME 537. I got one, thanks SBFan, and installed it. The boat now will not go over 3k rpm and has no power. The props I was using on the boat were the 515 and 525 but I was looking for a 4 blade. Has anyone run into this issue and what is the proper prop to use. I am assuming it is the pitch.

[MoneyPity]

The Acme 537 prop is the correct standard prop for the boat.

[Jason B]

That prop should be just fine for you. I've been using it for 3 years on my 20v.

[kko]

That is the prop that comes on your boat from Tige. I think you need to look into a different area for your problem.

[chpthril]

I am continuing to have prop issues on my 20v (2007). I was told by everyone, including ACME that I should have the ACME 537. I got one, thanks SBFan, and installed it. The boat now will not go over 3k rpm and has no power. The props I was using on the boat were the 515 and 525 but I was looking for a 4 blade. Has anyone run into this issue and what is the proper prop to use. I am assuming it is the pitch.

Well, this is exactly why I didnt jump out there and take your money and sell you the 1235 or the 537 you asked for.......I knew something wasnt right.

If I remember right, from you OP, you were looking for a prop recommendation that would improve (reduce) fuel consumption.

What was the wide open speed and RPM of the other prop(s) you had on there?

Are you positive your boat has the 1.5:1 gear box, or by chance is it a late 06 or early 07 and possible has a 1:1 gear? This would explain a 3-blade like the 515 or the 525

What altitude do you normally boat at.

[Bandsecurity]

The wide open rpm was 5k plus with the other props. I am not sure what gear ratio I have. I bought boatt used. I boat at sea level. I am thinking its not the number of prop blades but rather the pitch but I am not sure. You are correct, I was looking at finding a prop that would help with fuel consumption when we surf.

[chpthril]

The wide open rpm was 5k plus with the other props. I am not sure what gear ratio I have. I bought boatt used. I boat at sea level. I am thinking its not the number of prop blades but rather the pitch but I am not sure. You are correct, I was looking at finding a prop that would help with fuel consumption when we surf.

Any chance you could snap and post a pic of the V-drive/trans assembly? This may help to determine what drive-train you have.

Maybe a stretch here, but does the hull ID confirm the boat is an 07?

5K WOT sounds about right for a prop that was put on to improve hole-shot and speed holding. This has me thinking that for some reason, the 3-blade was the right prop choice for what the previous owner used the boat for.

Not getting over 3K rpm with the 537 sound about right for a prop designed for a gear reduction drive-train on a 1 to 1 boat.

[Bandsecurity]

how do tell the year number from the hull ID number? It ends in YH607.
Unfortunately, I dont have the boat as I store it by where we board/surf. The 537 really underperformed - it took about 30 seconds for the boat to reach 23mph when pulling a boarder. With the 537 at 3k rpm's it was not like the boat was wound tigh it was was oppsite. It was like I had 6,000 lbs of ballast in it and it wouldnt move.
Also, why would they make a 1:1 ratio - what is it for?

[chpthril]

how do tell the year number from the hull ID number? It ends in YH607.
Unfortunately, I dont have the boat as I store it by where we board/surf. The 537 really underperformed - it took about 30 seconds for the boat to reach 23mph when pulling a boarder. With the 537 at 3k rpm's it was not like the boat was wound tigh it was was oppsite. It was like I had 6,000 lbs of ballast in it and it wouldnt move.
Also, why would they make a 1:1 ratio - what is it for?

All the DD's had/have a 1:1 transmission ratio and were commonly found in the V-drives. Up to 06, Tige still used some of the 1:1 setups in the V-drives. What you're describing sounds like a 1:1 as it just doesn't have the power of the 1.5:1 reduction to get the prop turning.

[dogbert]

All the DD's had/have a 1:1 transmission ratio and were commonly found in the V-drives. Up to 06, Tige still used some of the 1:1 setups in the V-drives. What you're describing sounds like a 1:1 as it just doesn't have the power of the 1.5:1 reduction to get the prop turning.

I think you're right. Check the color of the V-Drive. If it's blue, it's 1.5:1, if it's black, it's 1:1.

[SPBFAN]

trying to call you. give me a call if I don't get in touch with you. You are not stuck with that 537 if it does not work. I leave on a flight at 400 so call me before then if I have not made contact with you.

[Bandsecurity]

It must be the gear ratio. I have an email into Tige and maybe they can tell me. Is there a 4 blade prop avialable for the 1:1 gear ratio?

[R&T Babich]

... Is there a 4 blade prop avialable for the 1:1 gear ratio?

With a gear ratio of 1:1 the props you will be looking at will all probably be 3 blade.
Just like if the gear ratio was 1:1.46 the props that will work with that ratio are 4 blade.
There are excellent 3 blade props out there for the 1:1 gear ratio.

[chpthril]

It must be the gear ratio. I have an email into Tige and maybe they can tell me. Is there a 4 blade prop avialable for the 1:1 gear ratio?

I would call on Monday and talk to Lee in parts. Give him the full hull ID # and he may be able to tell you what drive-train that boat has. Being an 07, the typical setup would have been the ZF trans/v-drive assembly, where as the 06's used a Borg-Warner trans with a Walter V-drive. The Walter came in either a 1:1 (it was black) and the 1.5:1 (was blue) and the ZF only came in 1.5:1.

If you have a 1:1 gear, a 3-blade is probably best. In order to reduce fuel consumption, as compared to the prop you have now, you would need to go with one that has a higher pitch then what you are running now. Again, this is all based on what ratio you have. It's impossible to to choose a better/correct prop with out knowing the right gear ratio.

[Bandsecurity]

Thanks. Will do. I have an email into Tige now.