2004 21i

[davidmamato]

I am looking for a 4 blade prop for a 21i. Thank you.

[davidmamato]

my 21i has the mercruiser 350

[davidmamato]

2004 21i

The issue that I am trying to correct is when wakeboarding it is very hard to maintain the wakeboard speed I like with the current 3 blade prop, I am hoping that if I switch from the 3 blade prop that originally came on the boat to the correct 4 blade prop for this boat maybe it will help maintain a consistent speed while wakeboarding, my boat has no perfect pass or anything like that and with about 300lbs ballast weight in rear 250lbs in front, with 4 adults and 2 children (700lbs passenger weight) TAPS2 at 8. Will a 4 blade prop be better than the current 3 blade to maintain a more consistent speed while wakeboarding? Any help is greatly appreciated! If a 4 blade prop will fix this problem could you please provide as much information regarding the prop I need including part number if possible. Thank you.

[davidmamato]

Also what are my options for installing a perfect pass type system on this boat, how much$$$, and how diificult is this to install? Thank you.

[davidmamato]

I went to perfect pass and it looks like a perfect pass system is about $1200 to $1300, How hard is this to install by myself?

[TeamAllen]

Wow nobody has been helping you out? I'll see what I can do.

The perfect pass is easy to install. I just added PP to my boat earlier this year. You are close to me and I would be glad to help if you need it. You can get PP for less with a little shopping. If you are serious about adding it let me know. I'll see what I can find out or if you can wait till winter maybe work a deal in the off season.

As far as the propeller, see if you can find out what you have on there now. There are numbers usually stamped in the inner hub. You can also call ACME propellers. They are very helpful and make an outstanding product.
http://www.acmemarine.com/

Where do you go riding mostly? You should make the trip out with us to Lake Mead next weekend for the owners reunion. It will be a great time!
http://www.tigeowners.com/forum/show...d-reunion-2013

[davidmamato]

Cool you are in San Clemente. Thank you for the info. How do you like your new PP. Do you run a 3 blade or a 4 blade? Were you experiencing the same issue I described above. If so what steps did you take to correct? I will check the numbers on my current prop and contact acme for 4 blade replacement? I was told a 4 blade delivers more torque and the 3 blade delivers higher top end speed. I am not concerned with the top end speed I am hoping a 4 blade will help if it delivers more torque. I was in Lake Mead Labor Day weekend and it was fun but not much glass even early in the morning. Everytime I go to Mead its thunderstorm city. We stayed at the Hacienda Casino right above the lake, maybe 1/2 mile away it was ok but every morning I woke up at 5am hoping to see glass but only saw wind, clouds, and rain everyday for the 5 days we were there. I prefer Dragon Lake, Glass every morning until 11am, with only a few other boats on the water early.

[TeamAllen]

Yah, good to see another OC brother in the house.

I use an ACME 653 three blade prop for my boat. I have never had a problem maintaining speed at wakeboarding speed. What speed are you towing your wakeboarder at?
Wake surfing is the hardest to maintain speed for and that is where the PP is invaluable. ACME will want you to do some preliminary testing to see what your RPM is at wide open throttle (WOT) unloaded for a bench mark.

We usually stay at the Hacienda as well and will be there FRI and SAT this weekend for the reunion. There is usually plenty of glass to go around this time of year. There are usually a few pro sponsor riders there and I know there will be a couple of boats to demo from the local dealer. Think about it. Here is the trip report from last year with plenty of pics and video of the action.
http://www.tigeowners.com/forum/show...Pics-and-Video

[davidmamato]

2004 21i

I wakeboard at 24mph at 70 feet. I have tried other speeds and rope lengths and this works best for me and my boat with above mentioned ballast and people weight. When wake surfing the boat has no trouble maintaining 14 or 15 mph. The only problem we have is when I make a hard progressive turn back to jump the wake the boat slows down about 2-3 mph reducing my ability to gain speed to attack the wake, can be very frustrating, the only thing that has helped is reducing weight in the boat with above mentioned ballast weight but -3 adults in boat the problem is gone and ofcoarse the wake is a bit smaller. The wake is perfect with above mentioned ballast weight and 4 adults 2 children. Maybe its time to get a WAKESETTER.

[chpthril]

David,

What 3-blade are your currently running? ACME has a couple of awesome 3-blade props that work perfect with the 1:1 drive ration of the Tige DD's. The 653 that TA is using is one of the popular ones. ACME has also released some new props recently, so there may be other good options that I do not have experience with. I would contact ACME and get their input. They will need all your boat info, how much ballast you use for surfing and boarding, how you primarily use the boat and if you lake is at any elevation.

[davidmamato]

2004 21i

Thanks Mike, I will call acme. I looked for the numbers on the prop and it says tige class 15.

[davidmamato]

anyone know which acme 4 blade prop works best for this boat with above described motor, weight, wakeboard speed and rope length?

[davidmamato]

the acme 3 blade is 515 13x12 VL 1 1/8''

[TeamAllen]

The 515 is what you currently have on the boat now?

[chpthril]

the acme 3 blade is 515 13x12 VL 1 1/8''

If you've got a 515 in there now and its aint gittn the job done, I would talk to the pro's @ ACME. The 515 is a good prop for the DD's. Its only .5" higher pitch then the 653. Since you are not running a lot of weight, your speed holding might not be prop related.