FX-1 Kawi pumps what prop

[Smokin'FX-1]

Might get a chance to start on the Kawi pump mod this week. Only going to start on it if I can't ride for a couple weeks (unknown as of now). What props are some of you running? The X2 setup I have already has a Skat 16 (in excellent condition) and was planning on using it temporarily, not sure how it will run with that though (61x/64x 760). The pump will get fresh bearings, seals, and blueprinting before it gets tossed in as well.

I know some use the SXR cutback with an R&D cone (or TBM, etc). What are some pitches others have had success with. I'm thinking I may send the Skat to Impros in January When I do some other work to the ski, but wanted to start researching this now and planning future funds for it.

Also, would it be beneficial to cut down and reshape the stock cone, kinda like the wet wolf cones, or do any other mods I can do myself to it (filling, smoothing, reshaping, etc.)?

I like having some good top speed (51+), but the ski is becoming more of a freestyle ski that I am trying to progress on. I guess I would like something with some good low end pop and still have enough speed to go drag race and pick on people.

 

[Flash-FX]

I think that 9-17 is the # for the Kawi Setup. Good low end punch, with top end that hangs with my Yami 12-17 mag.

 

[kevbo]

The older Skat props work great once you get moving. Newer narrow hub and swirl props will make more thrust as long as the pitch is correct. If you are using a zxi shat then life is a lot easier because because you can use 750 props cut or shimmed to fit.

 

[driftmaster]

I would like to here more chime in. I'm getting ready to start my kawi pump mod. I don't care to go over 46, 47 mph. I'm looking for more of a low end hit.

 

[special fx]

9/17 is great for bottom hit and with my 9/17 I still run in the 50-55 mph range. The best bang for the buck that I know of is the stock SXR prop with a 6mm setback. You can snag a used (almost new) SXR prop for less than $100.

If I were buying a new aftermarket prop, I would lay down the bux for a Skat 9/17 swirl though.

 

[LIVE2RIDE Powersports]

9/17 is great for bottom hit and with my 9/17 I still run in the 50-55 mph range. The best bang for the buck that I know of is the stock SXR prop with a 6mm setback. You can snag a used (almost new) SXR prop for less than $100.

If I were buying a new aftermarket prop, I would lay down the bux for a Skat 9/17 swirl though.

I have a straight skat 16 right now, but have a 15 i want to put in.

Will the 15 have better low end then the cutback sxr?

I dont care about any topend. I have a complete low end boat.

 

[special fx]

I've ridden with a straight 15 and the bottom end hookup was better with the SXR prop. The stock SXR is a 13/18 and it's a swirl design, which I think hooks up better than the older straight pitch props.

 

[Algonquin]

I'm running a 13/22 Solas Dynalfly. Its a swirl deisgn prop. I first ran a 16.5 and it was almost unrideable due to the excessive cavitation.

I talked to Dave at impros and told him my entire setup and the 13/22 is what he suggested.

It pulls hard off the bottom and gets up to 50 quick. I've never tested for speed with gps but its at least in the 50's.

 

[LIVE2RIDE Powersports]

I've ridden with a straight 15 and the bottom end hookup was better with the SXR prop. The stock SXR is a 13/18 and it's a swirl design, which I think hooks up better than the older straight pitch props.

So the new straight 15's hook up better but the old straight 15's are worse?

And will i see a difference from my old straight 16 to the old 15? Or should i not mess with it. As of now with everything i have done its like a light switch or like having brakes when i let up the throttle.

 

[tnj4life]

Im running a scat 15.5 with a kick, it pulls nice off the bottom. For $50 and just worked over from impros I couldnt pass it up. I figured it would be better than my junk stocker. I would like to get a sxr prop eventually.

I too have wondered like Jinx if its worth anything to reshape the stock pump cone for a cheap mod? I would normally just buy the darn WW cone but I got laid off recently and have alot of idle time on my hands =].

 

[kevbo]

I doubt youll find any new style 15* props. Old Skat 15s are very good but tend to vibrate out of the hole. Low speed vibration went away when cambered blades became the norm. Narrow hubs work better with low inlet pressures making more static/low speed thrust.

 

[driftmaster]

I doubt youll find any new style 15* props. Old Skat 15s are very good but tend to vibrate out of the hole. Low speed vibration went away when cambered blades became the norm. Narrow hubs work better with low inlet pressures making more static/low speed thrust.

What causes low inlet pressures?