[Sagenhaftein]

Okay this has been in my head for a bit. I have fished off two fans this year with competition props. They worked fine and the did a good job. But to me both felt like the lacked On the torque end. Now I called and researched one and competition prop said that they recommended a pitch which is what it was at.

When I set my first fan up I got a arrowprop and it had from what I remember more torque. I don't remember it taking a bit to change directions and slow down this that.

My main question is anyone else fish of of them and see this? I'm wondering if arrowprop is a better prop for torque or is it not so.

To me seems like the motors wEre moving really fast without a lot of torque push.

As I'm throwing the idea of building one on my new boat I'm just curious what y'all think

 

[Joe Nichols]

Arrow gets the stuff from Comp. I figured out the best way to set up those type props is buy the blades a little long and max pitch it out and cut the blades down to match your RPM's. 18 degrees is all your getting and if you cut the blades down to match say 2500 or what ever the max pitch is thats all you gonna get out of the set up.

 

[Throughthegills]

I'd say there won't be much noticeable difference between the two as far as performance goes. The difference I did notice most when going to a competition prop is my blades actually stay in the hub now instead of flying out due to no fault of my own. I am getting more torque and better response with my Ultraprop than I was with my Arrowprop but then again I'm running a completely different set up now than I was then too.

 

[Throughthegills]

Arrow gets the stuff from Comp. I figured out the best way to set up those type props is buy the blades a little long and max pitch it out and cut the blades down to match your RPM's. 18 degrees is all your getting and if you cut the blades down to match say 2500 or what ever the max pitch is thats all you gonna get out of the set up.

Yes I agree. Max that biotch out with 18 degree pitch blocks and trim your blades to 2500-2600 rpm's. It will push like a bastard.

 

[Aquatic Undertaker]

I'd say there won't be much noticeable difference between the two as far as performance goes. The difference I did notice most when going to a competition prop is my blades actually stay in the hub now instead of flying out due to no fault of my own. I am getting more torque and better response with my Ultraprop than I was with my Arrowprop but then again I'm running a completely different set up now than I was then too.

I've got a 6-blade 51" with a 1.69:1 reduction on my 22/70, and it has plenty of torque to spare!!! Pushes 4 guys through 5" of water with soft bottom at idle. Add a reduction drive for INSANE low end performance! :hb: Haven't had any experience with Arrowprop hubs....just went straight for the Ultra-prop courtesy of Gills' advice. :tu:

 

[Carpn]

What did you do? Stack 2 three blades?

 

[Aquatic Undertaker]

What did you do? Stack 2 three blades?

Nope....you can get up to a 6-blade hub

 

[Throughthegills]

Yep I'm running a four blade prop on mine. I bet that 6 does have torque out the ass especially with a reduction. What's your idle speed like? That's the only thing that would worry me about going with more blades.

 

[Carpn]

Huh, I didn't realize they made 6 bld hubs. I am running a 4 bld, 57", at 18 degrees on a 29 HP motor and 2x1 reduction.

 

[Throughthegills]

Yeah they make 2,3,4,5, and 6 blade hubs. :tu:

 

[RankinCody]

How much could a guy get a 6 blade hub and blades for?

 

[Aquatic Undertaker]

Yep I'm running a four blade prop on mine. I bet that 6 does have torque out the ass especially with a reduction. What's your idle speed like? That's the only thing that would worry me about going with more blades.

Idles pretty dang slow....but it is on a 22 ft boat lol. I'll have to gps it at idle. It's not a speed demon (only about 6.8 mph at full throttle with 4 guys) by any means, but the torque is amazing! I'm currently running 16 degree pitch blocks....probably gonna get 18's soon. Pushes my boat with 4 guys over logs half buried in mud in 4-6" of water. My hull probably wouldn't be a good comparison for your setup though.

How much could a guy get a 6 blade hub and blades for?

http://www.competitionaircraft.com/pricing-and-ordering.html