Reply
 
Thread Tools Search this Thread
 
Old 28 April 2005, 04:28   #11
Member
 
Country: UK - Wales
Town: Cardigan
Boat name: Bay Explorer/Pioneer
Make: Humber/Quinquari
Length: 10m +
Engine: 2 x ETEC 200hp
Join Date: Sep 2004
Posts: 166
Quote:
Originally Posted by tim griffin
Do you get an alarm up saying check Pitot
No.
__________________

__________________
-------------------------------------------------

www.baytoremember.co.uk
Tony Barber is offline   Reply With Quote
Old 28 April 2005, 06:06   #12
Member
 
Country: Ireland
Town: Carigaline/Baltimore
Boat name: XS-600
Make: XS-Ribs
Length: 6m +
Engine: Merc Optimax 150 XL
Join Date: Feb 2004
Posts: 682
Quote:
Originally Posted by tim griffin
Do you get an alarm up saying check Pitot
Surely that would be nothing to do with engine cooling. The Pitot is an engine speed sensor.

Figures of 170C are worrying and I would question their accuracy. Surely at 170C you would be doing a lot of damage to the engine and the engine guardian would kick in. I would think it might be a Smartcraft problem or a temp sensor problem.

My Opti can run hot at idle when running for long periods or when motoring very slowly. She's never run hotter than 70C though, and with a quick blip of the throttle this drops dramatically. I would also check that your cooling passages are clear as salt deposits can build up and restrict cooling of the block.
__________________

__________________
Steve G
If In Doubt, Go Flat Out!!
swginn is offline   Reply With Quote
Old 28 April 2005, 10:17   #13
TIM
Member
 
Country: Ireland
Town: Dublin
Boat name: WIZARD
Make: REDBAY 7.4
Length: 7m +
Engine: OPTI 225
Join Date: Aug 2002
Posts: 417
Quote:
Originally Posted by tim griffin
Do you get an alarm up saying check Pitot

which menu or Guage is the contol to turn off the pitot tube , as our set up runs on a paddle wheel?????
__________________
NOT THE SHARPEST KNIFE IN THE DRAWER
TIM is offline   Reply With Quote
Old 28 April 2005, 11:50   #14
Member
 
Country: Ireland
Town: Carigaline/Baltimore
Boat name: XS-600
Make: XS-Ribs
Length: 6m +
Engine: Merc Optimax 150 XL
Join Date: Feb 2004
Posts: 682
Quote:
Originally Posted by TIM
which menu or Guage is the contol to turn off the pitot tube , as our set up runs on a paddle wheel?????
You need the Cal2 screen;

Hold Mode and Troll+ for 10 seconds on the Tacho to access the screen. The second menu will be for the Pitot, select No to turn it off.

Just to let you know that using the paddle wheel only will result in inaccurate figures at high speed. The Pitot is more accurate at high speed.

Our setup uses both the paddle & pitot and is very accurate (compared with GPS). I think we've got the transition speed between paddle and pitot sensors set to around 15 kts.

HTH!!
__________________
Steve G
If In Doubt, Go Flat Out!!
swginn is offline   Reply With Quote
Old 28 April 2005, 12:25   #15
Trade member
 
tim griffin's Avatar
 
Country: UK - England
Town: Newport IoW
Boat name: Amean/Pronto/Rumbo
Make: Solent Rib Princess
Length: 7m +
Engine: 200hp Etec 260x 2
MMSI: lots of them
Join Date: Sep 2003
Posts: 1,859
Well i could be wrong as i am no engineer , but me mate Lee Fairweather told me that the wee small hole for the pitot is also the cooler for the compressor . I do know that when i get check pitot come up, my engine is very hot , so i turn off the engine this creates a backflush of sorts restart the engine and watch the temp fall so far its worked out aok . And as Lee knows his engines i have taken his advice on board . I might also add that this usualy occurs when we have a lot of weed around .I am getting the engine serviced next week so i will ask .
__________________
Tim Griffin
RYA Freelance YMI power Powerboat and PWC instructor trainer vhf first aid sea survival Diesel engine radar and navigation instructor
tim griffin is offline   Reply With Quote
Old 28 April 2005, 18:15   #16
TIM
Member
 
Country: Ireland
Town: Dublin
Boat name: WIZARD
Make: REDBAY 7.4
Length: 7m +
Engine: OPTI 225
Join Date: Aug 2002
Posts: 417
Quote:
Originally Posted by swginn
You need the Cal2 screen;

Hold Mode and Troll+ for 10 seconds on the Tacho to access the screen. The second menu will be for the Pitot, select No to turn it off.

Just to let you know that using the paddle wheel only will result in inaccurate figures at high speed. The Pitot is more accurate at high speed.

Our setup uses both the paddle & pitot and is very accurate (compared with GPS). I think we've got the transition speed between paddle and pitot sensors set to around 15 kts.

HTH!!

I had asumed that with the paddle wheel that the pitot was not used .... everytime we go out we get 'Check Pitot' I had thought that We were getting this warining because the Pitot wasnt in use .....How do I check this? . If it is connected, or in use ... what could be the problem?????
__________________
NOT THE SHARPEST KNIFE IN THE DRAWER
TIM is offline   Reply With Quote
Old 29 April 2005, 04:57   #17
Member
 
Country: Ireland
Town: Carigaline/Baltimore
Boat name: XS-600
Make: XS-Ribs
Length: 6m +
Engine: Merc Optimax 150 XL
Join Date: Feb 2004
Posts: 682
Well the paddle wheel is supposed to be used in conjunction with the pitot, that's why there is a screen in the Calibration2 menu to set the transition speed at which the speed stops being read from the paddle and starts reading from the pitot.

The pitot should be located in the leg of the engine behind a small intake hole at the front of the lower section of the leg. If you are getting alarms saying "check pitot" then it is in use. The problem could be that the intake hole is blocked or something could be stuck in the pitot tube.

Tim Griffin, that is interesting, what you say about the compressor. Seems a bit of a design flaw that such a small hole that is prone to getting blocked is used to cool the compressor. I would appreciate it if you could get more details from Lee on this??
__________________
Steve G
If In Doubt, Go Flat Out!!
swginn is offline   Reply With Quote
Old 29 April 2005, 06:33   #18
TIM
Member
 
Country: Ireland
Town: Dublin
Boat name: WIZARD
Make: REDBAY 7.4
Length: 7m +
Engine: OPTI 225
Join Date: Aug 2002
Posts: 417
thanks I will check it out over the weekend
__________________
NOT THE SHARPEST KNIFE IN THE DRAWER
TIM is offline   Reply With Quote
Old 29 April 2005, 08:09   #19
Trade member
 
tim griffin's Avatar
 
Country: UK - England
Town: Newport IoW
Boat name: Amean/Pronto/Rumbo
Make: Solent Rib Princess
Length: 7m +
Engine: 200hp Etec 260x 2
MMSI: lots of them
Join Date: Sep 2003
Posts: 1,859
Quote:
Originally Posted by swginn

Tim Griffin, that is interesting, what you say about the compressor. Seems a bit of a design flaw that such a small hole that is prone to getting blocked is used to cool the compressor. I would appreciate it if you could get more details from Lee on this??
Nope i was wrong nothing to do with the Pitot hole , the compressor is cooled via the leg as is the engine where it then branches off to the compressor and exits via the tell tale. There is a small grill that can / does get blocked especialy this time of year when there is weed about. HE RECKONS that when i get check Pitot up i have a blockage in the leg and pitot hole (HIGH TEMP) by switching off the engine i am causing a backflush of sorts and this clears it, the only way he could tell what was causing the engine to keep overheating was to get it on the computer.
__________________
Tim Griffin
RYA Freelance YMI power Powerboat and PWC instructor trainer vhf first aid sea survival Diesel engine radar and navigation instructor
tim griffin is offline   Reply With Quote
Old 29 April 2005, 10:34   #20
Member
 
Country: Ireland
Town: Carigaline/Baltimore
Boat name: XS-600
Make: XS-Ribs
Length: 6m +
Engine: Merc Optimax 150 XL
Join Date: Feb 2004
Posts: 682
Thanks, that makes sense alright, most of the time if I pick up weed it blocks the pitot first but can block the intake also.
__________________

__________________
Steve G
If In Doubt, Go Flat Out!!
swginn is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 00:34.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.