12/20 or 13/16 which to choose

[DaUpJetSkier]

There are two impellers on ebay right now I may not buy either but just curious, one is a skat 12/20 what would that be good for, and the other is a Super Slim Line 13/16. ANy ideas, would getting a skat swirl 13/17 cutback be much better than these.

 

[SUPERJET-113]

The swirl is the only one worth getting IMO. The old skool Skat standard hubs impellers are good, but not as sweet as a Swirl.
The swirl 13/17 would be a great prop with a strong full limited with porting.

 

[Big Kahuna]

repitched to 13-16 would be better on a limited setup.

 

[Matt_E]

I'm running a Swirl 13/18 - it rocks, much better than my old 13/16 concord.

 

[SUPERJET-113]

I like my new swirl 12/17 with a strong ltd and its not cutback yet. I got it from the same guy that has them for sale now("the"Jeff Jacobs:hail. Great seller, fast shipper.
I'd like to try a 13/18 swirl also and see what happens.

 

[Matt_E]

I don't know what you'd consider my engine setup...FS ported 717 61X, 180psi, total loss, b-pipe, VF2 reeds, dual 44's on a Riva manifold. Ported 62T cases.

 

[Freestylin-FX1]

Prob the same swirl 13/16 I was just looking at???

 

[DaUpJetSkier]

ya I was just curious seeing the 12/20 ive never really heard of and I hear a 13/16 is a good for a mild setup engine, Im just gonna get the 13/17 -3mm because it seems like its good for basically everything, maybe 13/16.
my engine will be a mild freestyle ported 61x/61x bottom non ported, single 44 riva freeride pipe, and a girdled head prob running 37 or 35cc domes.

 

[Matt_E]

13/16 should suit you well then.