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Old 10-09-2009, 06:32 PM   #1
JORDANIEL
 
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what prop?

can anyone give me advice on what prop i should be fitting to my xr2 on the back of my phantom 20. if i remember it had a 21p lazer11 on it before it was nicked but that was a long time ago
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Old 11-09-2009, 09:41 AM   #2
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Quote:
Originally Posted by jordaniel View Post
can anyone give me advice on what prop i should be fitting to my xr2 on the back of my phantom 20. if i remember it had a 21p lazer11 on it before it was nicked but that was a long time ago
I've been playing with props on mine it depends what you are trying to achieve,ie top speed .Holeshot for skiiing etc?A 23P Lazer gives mine 65mph at 6500 rpm so sensible revs and feels quite stable but this is a crap holeshot lots of slip.23P high five gives great holeshot but feels very unstable at speed scary above 50 mph,21P High Five pulls like a train but 55mph and 7500 rpm,the best i've found so far has been a 21P Four Blade prop called an Offshore(Discontinued)this gives a great holeshot and 65 mph but at higher revs ie 7500 rpm but if feels very stable.lots of people seem to be prefering four blade props certainly my four blader gives the best feel to the boat.Too higher pitch seems to drop the motor out of the power band and it bogs.I'm trying to keep the revs down on my engine and probably looking for the impossible High Speed/Low Revs/Holeshot all in one prop but still not found it.Good Luck with your Search and hope this helps
PS the 21P seems the best for pulling a skier out although the Offshore gripps to well and bogs the motor
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Old 11-09-2009, 09:58 AM   #3
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Worked 24 Yam drag prop on a lightweight P20 with Xr2 did 82mph and accelerated and drove great. I also found a Trophy or Renegade to be a great prop on a P20 but that was with a 2.5 efi .
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Old 11-09-2009, 09:59 AM   #4
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I have an XR2 also and is looking for a prop. With my current one a turbo 2+2 24p (4-blade) I find it difficult to get out of the water especially when I'm not alone in the boat. I have a 24 feet boat which perhaps is a bit heavy for the low torque XR2? The 24p revs to 6200rpm so a smaller prop could help.

I understand that different 24p props is less or more difficult for the engine to turn, makes more or less resistance to turn in the water. It has something to do with prop diameter or blade area, I am not 100% sure about that...

Does anyone here have a general recommendation for me and others that run XR2 2.0 liter engines.

Any specific recommendations for me?

I'm from sweden, I hope you understand my english.

Thanks!
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Old 11-09-2009, 10:48 AM   #5
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This question always leaves more to be answered as no two outfits are the same. 24 trophy is always a good starter imho for a 20 foot boat if for all round use.
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Old 11-09-2009, 04:42 PM   #6
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yam drag prop best invention ever [cheers for the prop roofer].
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Old 13-09-2009, 01:46 PM   #7
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Country: ENGLAND
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props

Quote:
Originally Posted by roofer View Post
Worked 24 Yam drag prop on a lightweight P20 with Xr2 did 82mph and accelerated and drove great. I also found a Trophy or Renegade to be a great prop on a P20 but that was with a 2.5 efi .
Hi Roofer is this the prop your on about (Yamaha 21 Pro Series Prop) theres one on here for sale but im not sure if its the same as the one your on about


Regards Ray
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Old 13-09-2009, 02:19 PM   #8
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Location: GOLDEN MILE
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Quote:
Originally Posted by jordaniel View Post
Hi Roofer is this the prop your on about (Yamaha 21 Pro Series Prop) theres one on here for sale but im not sure if its the same as the one your on about


Regards Ray
No nothing like the pro series, it's the small bladed prop top right on this thread.
http://boatmad.com/forum/attachment....0&d=1248431747
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