Boatmad.com


Reply
 
Thread Tools Display Modes
 
Old 11-10-2009, 07:15 PM   #1
Registered User
 
rob m's Avatar
 
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
Send a message via MSN to rob m
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





__________________

__________________
dont fight with ugly people they have nothing to lose
rob m is offline   Reply With Quote
Old 11-10-2009, 07:42 PM   #2
Registered User
 
gazza's Avatar
 
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
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
__________________

gazza is offline   Reply With Quote
Old 11-10-2009, 07:51 PM   #3
Registered User
 
rob m's Avatar
 
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
Send a message via MSN to rob m
Quote:
Originally Posted by gazza View Post
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
thanks for that thats the next job. should have done it before i took it out
__________________
dont fight with ugly people they have nothing to lose
rob m is offline   Reply With Quote
Old 12-10-2009, 09:37 PM   #4
Registered User
 
rob m's Avatar
 
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
Send a message via MSN to rob m
i have got a 26p 4 blade prop to try does anyone no this prop mazco re4 ? what they like ?
__________________
dont fight with ugly people they have nothing to lose
rob m is offline   Reply With Quote
Old 12-10-2009, 10:29 PM   #5
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
Quote:
Originally Posted by rob m View Post
i have got a 26p 4 blade prop to try does anyone no this prop mazco re4 ? what they like ?
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
the rat is offline   Reply With Quote
Old 13-10-2009, 07:09 AM   #6
Registered User
 
rob m's Avatar
 
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
Send a message via MSN to rob m
Quote:
Originally Posted by the rat View Post
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


should the 2.4 only be ran at 6500 max ?
__________________
dont fight with ugly people they have nothing to lose
rob m is offline   Reply With Quote
Old 24-10-2009, 08:35 PM   #7
Registered User
 
rob m's Avatar
 
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
Send a message via MSN to rob m
Quote:
Originally Posted by rob m View Post
i have got a 26p 4 blade prop to try does anyone no this prop mazco re4 ? what they like ?

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 ?




.
__________________
dont fight with ugly people they have nothing to lose
rob m is offline   Reply With Quote
Old 24-10-2009, 10:02 PM   #8
Registered User
 
Hydrostream's Avatar
 
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
Quote:
Originally Posted by rob m View Post
should the 2.4 only be ran at 6500 max ?
Keep it under 7k and it'll be fine.
__________________
www.powermarine.ie

[SIGPIC][/SIGPIC]
Hydrostream is offline   Reply With Quote
Old 27-10-2009, 06:11 PM   #9
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
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
Carl_B is offline   Reply With Quote
Old 27-10-2009, 06:16 PM   #10
Registered User
 

Join Date: Jun 2009
Posts: 670
Quote:
Originally Posted by Carl_B View Post
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
have you re-built the motor yet carl???
baj666 is offline   Reply With Quote
Old 27-10-2009, 06:22 PM   #11
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
Quote:
Originally Posted by baj666 View Post
have you re-built the motor yet carl???
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
__________________

Carl_B is offline   Reply With Quote
Reply

« Dowdy! | bluebird?? »
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Powered by vBadvanced CMPS v3.2.3

All times are GMT +1. The time now is 02:59 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
×