Whats Your Surf Speed RPM?

[Cwazy1 89]

There has loosely been talk here and there where members mention what rpm their boats are running.

 

I want to see what everyone is running here

 

1. Boat model and year

2. Prop (if you know, if not, lets assume stock)

3. Surf speed

4. Total ballast weight with crew size

5. Surf speed

[Cwazy1 89]

I'll start

 

1. '17 226

2. stock prop

3. 11.4

4. 2900 ballast and 4 crew

5. 3700rpm

[Cdifranco 463]

Although not a Supreme shouldn't matter for RPMsright?

1. '13 SV211

2. Stock high altitude 1619

3. 11.1

4. 2700 ballast and usually 3 crew

5. 2500-2750rpm depending on water conditions

Edited September 14, 2016 by Cdifranco

[Nick213 583]

08 Avalanche C4

Stock prop....

11.2-12 MPH on perfect pass

Custom avy sack, 400# or 570# on surf side seat 3-9 people (no sac on seat with 6 or more people)

3200-3900 RPM depending on weight and speed

[Cwazy1 89]

Wow thats super low.. is that just from the 1619?

 

Although not a Supreme shouldn't matter for RPMsright?
1. '13 SV211
2. Stock high altitude 1619
3. 11.1
4. 2700 ballast and usually 3 crew
5. 2500-2750rpm depending on water conditions

[RhuntIII 555]

1. 2002 Avy

2. ACME 911 3 blade prop

3. 10.7-skim, 11.7-9' longboard

4. 2500lbs rear, center and port weight

5. 32-3500 RPM 1:1 on my tranny

6. Wake Plate 100% down

[Nick213 583]

Wow thats super low.. is that just from the 1619?

 

just looked and it's a 13X17 497, the prop came on the boat. My boat only had 22 hours on it when I bought it in 2014 and nothing was modified on the boat when I bought it, so I'm assuming its stock.

Ahh and I forgot to add I have the center ballast as well.

Edited September 15, 2016 by Nick213

[CO Surfer 289]

How does that happen? A 6 year old surf boat that the owner only put 22 hours on it? I had 22 hours on my boat in the first 3 weeks!

[stoked 1,039]

1. '15 FS33

2. 1615

3. 11.5

4. around 4000lbs listed

5. 33-3500rpms

Cdifranco, At one point I was running the 15" 2279 prop and my RPMs were around 25-2700, but those RPMs are too low and not in the ideal power band. Start at post 28: http://www.centurioncrew.com/index.php/topic/10365-fs33-prop-size/page-2 The malibu link there is really informative, if you're going to keep it another season or two you might want to change the pitch to take the stress off of the engine.

 

just looked and it's a 13X17 497, the prop came on the boat. My boat only had 22 hours on it when I bought it in 2014 and nothing was modified on the boat when I bought it, so I'm assuming its stock.
Ahh and I forgot to add I have the center ballast as well.

 

He's not talking to you LOL, your RPMs are normal

[Cdifranco 463]

1. '15 FS33

2. 1615

3. 11.5

4. around 4000lbs listed

5. 33-3500rpms

Cdifranco, At one point I was running the 15" 2279 prop and my RPMs were around 25-2700, but those RPMs are too low and not in the ideal power band. Start at post 28: http://www.centurioncrew.com/index.php/topic/10365-fs33-prop-size/page-2 The malibu link there is really informative, if you're going to keep it another season or two you might want to change the pitch to take the stress off of the engine.

 

 

He's not talking to you LOL, your RPMs are normal

Boat has a for sale sign on it as we speak, unfortunately nobody has any idea about what's going on with these new boats so it does look like I'll be keeping it for another year, I think the easiest thing for me is to add more weight!

 

I have grown accustomed to how quiet the boat is when we surf too lolol

 

I was planning on getting another prop over the winter time, can anyone recommend which would be the right prop for my boat? we pretty much primarily surf, wakeboard maybe twice a month

Edited September 15, 2016 by Cdifranco

[CO Surfer 289]

I would call Acme props. They're pretty helpful guys. You will need to know what you're running for RPMs at surf speed and what you're trying to do with the prop (increase/decrease RPMs).

[DarksideR 1,679]

1. '16 FS33

2. 1847

3. 11.5

4. around 4000lbs listed

5. 3650-3900RPMs new gear drive ratio

[CO Surfer 289]

1. '16 SV233

2. 1847 (factory high altitude prop)

3. 10.5-12.0

4. Guess around 1,500 surf side; 200 non-surf side

5. 3,300-3,600 RPMs (1.72:1 transmission ratio)

[Bongo Fury 640]

1. '16 FS33

2. 1847

3. 11.5

4. around 4000lbs listed

5. 3650-3900RPMs new gear drive ratio

 

Dark....thats some serious weight your running.....lead or bags?

[DarksideR 1,679]

Stock weight. It's less than 4000 I suppose.

Bow 500lbs

PNP's 800lbs

STBD Ramfill 1500lbs

Port Ramfill 750lbs

 

Total 3550lbs

 

Just tried having 110lbs of lead under the STBD side seat... didn't really notice anything different. It's such a small amount. I really notice a change in the wave when the bow bag self drains! Winter mod in the mix.

[stoked 1,039]

Mine drains all the time, every time my wife drives around I can see it. I'll be drinking a lot of tequila this off season...

 

I definitely notice the lead when I have it versus when I don't. But I'm also running 600lbs of it. I also notice when we're less than half a tank

[RhuntIII 555]

1. 2002 Avy

2. ACME 911 3 blade prop

3. 10.7-skim, 11.7-9' longboard

4. 2500lbs rear, center and port weight

5. 32-3500 RPM 1:1 on my tranny

6. Wake Plate 100% down

Correction, Today was 28-2900 rpm, running 11-11.7mph

[Bongo Fury 640]

Mine drains all the time, every time my wife drives around I can see it. I'll be drinking a lot of tequila this off season...

 

I definitely notice the lead when I have it versus when I don't. But I'm also running 600lbs of it. I also notice when we're less than half a tank

 

We cross vented our new custom port pro bag and still get tons of run off......Petron it is!

[stoked 1,039]

Mine drains all the time, every time my wife drives around I can see it. I'll be drinking a lot of tequila this off season...

I definitely notice the lead when I have it versus when I don't. But I'm also running 600lbs of it. I also notice when we're less than half a tank

 

 

 

We cross vented our new custom port pro bag and still get tons of run off......Petron it is!

 

I don't even know how we'd cross vent a bow bag. I'm thinking that because everything is timer based and I calibrate it twice a season, I may just do away with the vent line completely. It's dangerous if time runs too long, so I might just decrease the time 30 seconds.

 

As I'm thinking about it, might as well tear out the PnP vents as well. It will just be on me to check the timers regularly

[DarksideR 1,679]

I don't even know how we'd cross vent a bow bag. I'm thinking that because everything is timer based and I calibrate it twice a season, I may just do away with the vent line completely. It's dangerous if time runs too long, so I might just decrease the time 30 seconds.

As I'm thinking about it, might as well tear out the PnP vents as well. It will just be on me to check the timers regularly

I wouldn't do away with the vents. The bags will get air in them with the water no matter what you do. You need to vent. It's too dangerous in my mind. You can manually vent the PNP's. But, I'm lost on what to do with the bow though.