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11-10-2009, 07:15 PM
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#1
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Registered User
Country: uk
Location: barrow in furness cumbria
Occupation: letting agent
Boat name: fantastic
Boat make: phantom 18
Engines: mercury 2.4
Cruising area: walney
Join Date: Mar 2009
Location: barrow in furness cumbria
Posts: 237
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teething problems
was out testing p18 with 2.4 bridgeport to day. it was running good only has a 3 blade 22 pitch on and sounded like it was over reving and was only doing about 65 mph so would a 4 blade 26 pitch be better ? i dont have a rev counter yet can anyone tell me what i need and how to wire one up eg any sort of sender i need for the engine or does it go strate on
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11-10-2009, 07:42 PM
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#2
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Registered User
Occupation: Champion Pie Eater
Boat name: On The Rocks
Boat make: Ring 21 marshan 17 four winns horizon, hydro 3 pointer, f2 cat, backdraft 22
Cruising area: Way up norf and Sarf coast areas
Join Date: Apr 2007
Posts: 1,619
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Rev Counter
positive wire - negative wire - then grey wire in most Merc looms.
The gauge will have this marked on the rear.
Get the rev counter going before trying props as you could blow the motor over revving the tits off it.
gaZ
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11-10-2009, 07:51 PM
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#3
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Registered User
Country: uk
Location: barrow in furness cumbria
Occupation: letting agent
Boat name: fantastic
Boat make: phantom 18
Engines: mercury 2.4
Cruising area: walney
Join Date: Mar 2009
Location: barrow in furness cumbria
Posts: 237
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Quote:
Originally Posted by gazza
Rev Counter
positive wire - negative wire - then grey wire in most Merc looms.
The gauge will have this marked on the rear.
Get the rev counter going before trying props as you could blow the motor over revving the tits off it.
gaZ
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thanks for that thats the next job. should have done it before i took it out
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12-10-2009, 09:37 PM
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#4
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Registered User
Country: uk
Location: barrow in furness cumbria
Occupation: letting agent
Boat name: fantastic
Boat make: phantom 18
Engines: mercury 2.4
Cruising area: walney
Join Date: Mar 2009
Location: barrow in furness cumbria
Posts: 237
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i have got a 26p 4 blade prop to try does anyone no this prop mazco re4 ? what they like ?
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12-10-2009, 10:29 PM
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#5
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Registered User
Country: thornton
Occupation: kitchen supplier and installer
Boat name: roofless
Boat make: phantom/talon 18's/scarab 21,Larson 254 cabrio
Engines: V8
Cruising area: wyre/morcambe bay
Join Date: Apr 2008
Posts: 312
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Quote:
Originally Posted by rob m
i have got a 26p 4 blade prop to try does anyone no this prop mazco re4 ? what they like ?
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i think a 26 mite be too much,ive got 26lazer on my 18 with a 2.4,it runs 73 on a gps but only pulling 6500 revs,24 mite be the way to go
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13-10-2009, 07:09 AM
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#6
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Registered User
Country: uk
Location: barrow in furness cumbria
Occupation: letting agent
Boat name: fantastic
Boat make: phantom 18
Engines: mercury 2.4
Cruising area: walney
Join Date: Mar 2009
Location: barrow in furness cumbria
Posts: 237
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Quote:
Originally Posted by the rat
i think a 26 mite be too much,ive got 26lazer on my 18 with a 2.4,it runs 73 on a gps but only pulling 6500 revs,24 mite be the way to go
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should the 2.4 only be ran at 6500 max ?
__________________
dont fight with ugly people they have nothing to lose
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24-10-2009, 08:35 PM
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#7
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Registered User
Country: uk
Location: barrow in furness cumbria
Occupation: letting agent
Boat name: fantastic
Boat make: phantom 18
Engines: mercury 2.4
Cruising area: walney
Join Date: Mar 2009
Location: barrow in furness cumbria
Posts: 237
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Quote:
Originally Posted by rob m
i have got a 26p 4 blade prop to try does anyone no this prop mazco re4 ? what they like ?
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took it for a try to day going from a 3 blade 21pitch to a 4 blade 26p i lost about 10mph . going to try a 23 and 24 next to see what i thinks best has anyone got any thoughts ?
.
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dont fight with ugly people they have nothing to lose
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24-10-2009, 10:02 PM
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#8
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Registered User
Country: Ireland
Location: Dublin
Occupation: Boatbuilder
Boat make: Hydrostream V-king, 650SS OCR ,Ring 21, Ring 18, Phantom 18.
Engines: 300Hp Mercury 2.4, 130 Yamaha, Bridgeport EFI, XR6, Merc 200.
Cruising area: Malahide, Dublin
Join Date: May 2004
Location: Dublin
Posts: 1,803
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Quote:
Originally Posted by rob m
should the 2.4 only be ran at 6500 max ?
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Keep it under 7k and it'll be fine.
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27-10-2009, 06:11 PM
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#9
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Registered User
Country: UK. Essex
Location: Mayland
Occupation: Train Driver
Boat name: Un-named as yet
Boat make: Phantom 21
Engines: yam 225
Cruising area: Thames estuary Black water/crouch
Join Date: Apr 2009
Location: Mayland
Posts: 373
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From what i understand more blades = better pull out of a hole and better accelaration but less top end. Therefore less blades = better top end but less pull out of a hole and slower accelaration.
I might be a complete saying that and be completly wrong, but it worked that way with my R20. It had a high 5 on and it pulled like a train but only got 55mph top end at about 5500-6000 rpm. I lifted the engine and replaced prop with 25 inch pitch laser 2. Unfortunatly i was unable to fully test as think engine was too high and cavitated when i trimmed it out, then i knocked the ends out the engine, but thats my own fault for not bleeding the oil injection system after the cap broke and half the oil tipped out, i topped it up and thought i got away with it. Yes ive answered my own question i am a complete
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27-10-2009, 06:16 PM
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#10
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Registered User
Join Date: Jun 2009
Posts: 670
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Quote:
Originally Posted by Carl_B
From what i understand more blades = better pull out of a hole and better accelaration but less top end. Therefore less blades = better top end but less pull out of a hole and slower accelaration.
I might be a complete saying that and be completly wrong, but it worked that way with my R20. It had a high 5 on and it pulled like a train but only got 55mph top end at about 5500-6000 rpm. I lifted the engine and replaced prop with 25 inch pitch laser 2. Unfortunatly i was unable to fully test as think engine was too high and cavitated when i trimmed it out, then i knocked the ends out the engine, but thats my own fault for not bleeding the oil injection system after the cap broke and half the oil tipped out, i topped it up and thought i got away with it. Yes ive answered my own question i am a complete
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have you re-built the motor yet carl???
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27-10-2009, 06:22 PM
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#11
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Registered User
Country: UK. Essex
Location: Mayland
Occupation: Train Driver
Boat name: Un-named as yet
Boat make: Phantom 21
Engines: yam 225
Cruising area: Thames estuary Black water/crouch
Join Date: Apr 2009
Location: Mayland
Posts: 373
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Quote:
Originally Posted by baj666
have you re-built the motor yet carl???
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No not yet, not had a chance to get near the thing. Might sell it for spares or repair and get another engine soon as the financies allow, something a bit bigger or even a slightly later 2.5 200hp as think this 1 is only 2.4
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