3 blade 72" H

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GMAC 76
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3 blade 72" H

Postby GMAC 76 » Sat Feb 04, 2017 9:47 am

Need some help here fellas...........can you pitch a 72" 3 blade H Sensenich prop enough to work on a 300 hp Lycoming engine????? or is it too much engine??

pirate
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Re: 3 blade 72" H

Postby pirate » Sat Feb 04, 2017 10:27 am

According to this link, it will work if you're looking for top end.

http://www.sensenich.com/products/item/28
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Deano
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Re: 3 blade 72" H

Postby Deano » Sat Feb 04, 2017 10:54 am

I believe the literal answer is yes.
It will be into 'the impersonate a warp drive' mode though, imo.

Q blades would be a better option, especially at partial throttle.
Those H blades push best after they're spun up, not so much before that.
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Re: 3 blade 72" H

Postby GMAC 76 » Sat Feb 04, 2017 11:03 am

thanks pirate....that link told me exactly what I needed to know.....he has a heavy boat and is looking for push not speed ...so imo that prop will not be a good choice

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goldhunter_2
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Re: 3 blade 72" H

Postby goldhunter_2 » Sat Feb 04, 2017 1:37 pm

the H break loose on the ground real well , Q are nice to

Deano,
they no where close to a warp drive and they push well so once your moving you don't spin as fast thus curse sound level isn't very different at least on my boat
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Deano
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Re: 3 blade 72" H

Postby Deano » Sat Feb 04, 2017 6:21 pm

Ya, my reference was mainly to the volume at rpm.

I much prefer Signatures or Qs, mostly for that reason.
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Re: 3 blade 72" H

Postby One Eyed Gator » Mon Feb 06, 2017 7:14 am

To me H blades are like an old school 2 stroke dirt bike. Fast and load but have a narrow power band at the top.

I ran one on a 14' Aluminum hull with a caddy, Always felt prop was slipping unless you where into the throttle. Was set at almost 3, but the snap was great.

Would make your ears bleed set at 3000.

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Deano
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Re: 3 blade 72" H

Postby Deano » Mon Feb 06, 2017 9:51 am

More thorough description and good analogies. :salute:

Maybe it's a Caddy thing. Still, am glad to hear that it wasn't just me.
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Re: 3 blade 72" H

Postby jopete » Wed Feb 08, 2017 8:45 pm

I had a 3 lade 72''H on my deckover with 300 Lycoming. it was retarded fast but I didn't like it running the ground. it's all top end and I wanted more push down low.


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