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Old 14-06-2006, 09:16 PM   #1
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Design Speed

Boats seem to have a max design speed and engine weight.
Just wondering if anyone knew what it was for a Phantom 20
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Old 14-06-2006, 09:25 PM   #2
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Mine seems to be be 83mph with two fat people!
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Old 14-06-2006, 09:25 PM   #3
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i suspect its below what yours is capable of
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Old 14-06-2006, 09:57 PM   #4
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Wasn't the maximum recommended on a p18 115 hp?
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Old 14-06-2006, 10:31 PM   #5
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not sure but i would say 115 would be max for a p16
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Old 14-06-2006, 10:31 PM   #6
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Quote:
Originally posted by roofer
Wasn't the maximum recommended on a p18 115 hp?
Depends who's reccomending.

for example, I don't think anyone would have reccomended a 115hp motor, for racing one in 2 litre OCR (200hp)

For pleasure use, mebbe by CE standards, i'm sure it would be different.


I spoke with Steve Baker a while ago, and mentioned your setup, and asked what he thought of running a P20 @ 90mph, his thoughts were, that it'd be ok in the right hands, until a situation arrose where you had to take avoiding action suddenly. He wasn't too sure about the outcome of that
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Old 14-06-2006, 10:32 PM   #7
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a p18 is more likely to be up to 175
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Old 14-06-2006, 10:41 PM   #8
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Quote:
Originally posted by Jon Fuller


I spoke with Steve Baker a while ago, and mentioned your setup, and asked what he thought of running a P20 @ 90mph, his thoughts were, that it'd be ok in the right hands, until a situation arrose where you had to take avoiding action suddenly. He wasn't too sure about the outcome of that
Glad he thinks the boat can handle it.
Shame I can't, well i've learnt alot of the last few months, may have hurt me wallet but not me body

what does he think of a big heavy torquey 3ltr hanging on the back?
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Old 14-06-2006, 10:51 PM   #9
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Quote:
Originally posted by Jon Fuller
I spoke with Steve Baker a while ago, and mentioned your setup
Did you mention my setup of 75Kg of sand (in bags) strapped into the passenger seat cus no one wants to go boating with me.

Maybe you should change my name to Johnny No Mates
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Old 14-06-2006, 10:56 PM   #10
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Quote:
Originally posted by Burty
what does he think of a big heavy torquey 3ltr hanging on the back?
Well our "Big heavy torquey 3ltr" weights the same as a xr2 thank you very much!!
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Old 14-06-2006, 10:58 PM   #11
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Quote:
Originally posted by PuppiesBalls
well its good to know that ur not talking about our beautiful MAD EFI 300 cus that weighs the same as an xr2!! thank u very much !
only 900kgs then
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Old 14-06-2006, 11:14 PM   #12
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Quote:
Originally posted by Jon Fuller



I spoke with Steve Baker a while ago, and mentioned your setup, and asked what he thought of running a P20 @ 90mph, his thoughts were, that it'd be ok in the right hands, until a situation arrose where you had to take avoiding action suddenly. He wasn't too sure about the outcome of that
That could apply to many things, I wouldn't like to take avoiding action at 90mph in my car either.
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Old 14-06-2006, 11:18 PM   #13
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Quote:
Originally posted by roofer
That could apply to many things, I wouldn't like to take avoiding action at 90mph in my car either.
what car have u got though?
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Old 14-06-2006, 11:31 PM   #14
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A big mudda
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Old 14-06-2006, 11:33 PM   #15
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sounds fun
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Old 15-06-2006, 08:19 AM   #16
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Quote:
Originally posted by Jon Fuller
Depends who's reccomending.

for example, I don't think anyone would have reccomended a 115hp motor, for racing one in 2 litre OCR (200hp)

I seem to recollect that when we first started running XR2`s on the P18 in OCR that Steve was asked about the maximum recommended power for that boat. I am pretty sure he said 150HP as a general rule but with the right set up and with an experienced driver, 200 was OK. I think it was the RYA being a little paranoid at the time that had prompted the question.
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