70” or 72” WW on a 220

Airboat propeller discussion.
CypressHunter
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70” or 72” WW on a 220

Postby CypressHunter » Mon Aug 05, 2019 11:20 pm

Currently run a 70” water walker on a 220 13’6” cottonmouth. Just wondering what I’d gain or lose swapping hubs and going to a 72”
13' 6'' Cotton Mouth 220 GPU 70'' signature series

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mojoe
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Re: 70” or 72” WW on a 220

Postby mojoe » Wed Aug 07, 2019 7:36 pm

If you swap them out, you will say it has better low end push but you lost a little snap. If somebody swapped it out and didn’t tell you, you probably wouldn’t notice anything different.
Mark 7:9

CypressHunter
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Location: Melbourne, FL

Re: 70” or 72” WW on a 220

Postby CypressHunter » Thu Aug 08, 2019 3:23 pm

mojoe wrote:If you swap them out, you will say it has better low end push but you lost a little snap. If somebody swapped it out and didn’t tell you, you probably wouldn’t notice anything different.


So nothing? Lol
13' 6'' Cotton Mouth 220 GPU 70'' signature series

AirHog
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Re: 70” or 72” WW on a 220

Postby AirHog » Thu Aug 08, 2019 4:21 pm

I would choose the 72 for mor push.... plus if you modify the engine with Aircraft cylinders even 0470 cylinders would be better off with the 72”

Good Luck

AirHog
Bad decisions make good stories!
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CypressHunter
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Posts: 304
Joined: Thu Mar 18, 2010 6:32 pm
Location: Melbourne, FL

Re: 70” or 72” WW on a 220

Postby CypressHunter » Sun Aug 11, 2019 7:15 pm

AirHog wrote:I would choose the 72 for mor push.... plus if you modify the engine with Aircraft cylinders even 0470 cylinders would be better off with the 72”

Good Luck

AirHog


I am about to go thar route or 520 :shock:
13' 6'' Cotton Mouth 220 GPU 70'' signature series

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John Fenner
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Re: 70” or 72” WW on a 220

Postby John Fenner » Tue Aug 13, 2019 8:31 am

I put a 74" whisper tip on a 10:1 220/520 conversion, very impressive machine!
I never finish anyth,,,.


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