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| P55ME, fwd/reverse problem |
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Message |
    
Clive Boyle
Member
Username: klondyke
Post Number: 4
Registered: 03-2008
| | Posted on Tuesday, July 08, 2008 - 03:05 pm: | 
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A fellow S.T.owner asked me to take a look at his P55ME,after he had rescued it from Fairways,(smelt the rat)just weeks before it folded.
The problem was when gear shift was in fwd, he could not get fwd.gear,and could stop prop shaft rotateing with hands.I should at this point say that he is not mechanically minded,and that he,and his sailing boat complete with inboard S.T.had been acquainted for two seasons,and in that time says fwd/rev O.K. The problem started after sailing into a situation where the engine was needed pronto.He says "...they started the motor ,and stuck it straigh into reverse",it would seem that no thought was given to engine revs due to their predicament.
The situation now is that I, with my limited knowledge,12 months worth of P66,managed to locate,the cam ajuster to obtain equal fwd/rev slip.
This brings me to my main question: HOW MUCH SLIP,if any,IS ACCEPTABLE WHEN A TURNING FORCE IS APPLIED TO THE FLY WHEEL,AND THE PROP FLANGE IS HELD FAST? |
Todd Vidgen
Senior Member
Username: todd_vidgen
Post Number: 52
Registered: 03-2008
| | Posted on Tuesday, July 08, 2008 - 05:55 pm: |
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None,If you can rotate the prop whilst the fly wheel is held fast, it most certainly will slip at higher
engine revs causing excessive wear on the gear box internals,shortening the life of the unit,also once
it has slipped,it will start to slip at even lower revs until you are left with a box full of neutrals |
Chris Mundy
Member
Username: chris_mundy
Post Number: 12
Registered: 09-2007
| | Posted on Tuesday, July 08, 2008 - 10:42 pm: |
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G'day Clive,
I would imagine the clutch cones are worn, it probably requires dismantling, machining and setting up at the correct clearance with the appropriate shims. |
Clive Boyle
Member
Username: klondyke
Post Number: 5
Registered: 03-2008
| | Posted on Wednesday, July 09, 2008 - 05:38 am: |
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Thank's both,Todd,& Chris.
Do'nt look like he will be chuggin along on the crest of the waves any time soon. |
Peter Ogborne
Senior Member
Username: peterogborne
Post Number: 265
Registered: 09-2002
| | Posted on Wednesday, July 09, 2008 - 08:24 am: |
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Clive ...what you have been told is correct .This problem has come about because the cones have not been fully engaged . As the bishop said to the actress ''It is either in or out ''! |
Clive Boyle
Member
Username: klondyke
Post Number: 6
Registered: 03-2008
| | Posted on Thursday, July 10, 2008 - 05:35 am: |
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Thanks Peter...guess I'll be dismantling...is there any technical info/ literature, regarding procdure? as Peter says,"... correct clearance with the appropriate shims"...got to it get right. |
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