Freestyle Freestyle/freeride : Best mag pump with dasa 83mm stroker +8mm

[lerott]

Hi guys the question is in title.
Actually I have a 140mm setback with 15/20 prop with my little dasa 771cc (stock stroke and 85mm pistons).
I think 144mm setback will be better with the stroker (12/17 or 13/18 prop) for freeride or 148mm setback (9/15 prop) for freestyle.
What do you think about that ?

Thanks

 

[iptamenos]

148mm is for 8mm or more !!!

 

[deftons56]

148mm is for 8mm or more !!!

Only about 3 years late with the response

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[lerott]

Better than never.
I've tried 148mm with 9/14, according to me bad results compared to my 140mm but I haven't lots of impellers, cone and exit nozzle to play with. I've sold 148 mm and bought a known setup that work for sure, skat setback 144mm with 14/19 c75 and 85.5mm exit nozzle with success for surf use. Due to little dammage on my impeller (rocks in Montalivet, France for those who known the spot lol ) i've switched to hooker 11/17, it works but i feel i spin my impeller, seems under propped