P Bracket Alignment Recomendations for yard to undertake work.

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Newbroom

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My Broom 450 has a P Bracket alignment problem. This was identified on its survey and while it results in a noisy vibration at tick over seems to smooth out at speed.
This is almost certainly a P bracket alignment problem and not an engine alignment problem. I want to get the work booked in for the end of the season and looking for a yard or marine engineer who has the expertise and skill to undertake the work
Either on the East coast or the South coast recommendations wanted will take the boat wherever to get it repaired.
The boat is a Broom 450 TSMY
Dave
 
Couple of marinas on Medway capable of doing that job properly, Gillingham Marina or Medway Bridge.

Would suspect bent propshaft or worn cutlass before any "P" bracket regards vibration ?
If bracket has been bent by grounding, two paths to follow, get new one fabricated, which costs a fortune and takes some time or get old one straightened, outfit in Chatham dockyard who can do this. Invicta Marine.
 
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oldgit said:
Couple of marinas on Medway capable of doing that job properly, Gillingham Marina or Medway Bridge.

Would suspect bent propshaft or worn cutlass before any "P" bracket regards vibration ?
If bracket has been bent by grounding, two paths to follow, get new one fabricated, which costs a fortune and takes some time or get old one straightened, outfit in Chatham dockyard who can do this. Invicta Marine.
Click to expand...

Pretty sure that it is P Brackets, Shaft were checked for true and Engine alignment checked. Shaft is hard over one side of the P Bracket when when disconnected from engine.
Myself and surveyor plus engineers in Wales spent quite some time considering the implications when out of the water for survey at purchase.
 
Had same thing on my previous boat with Broom hull.
Stern rope had gone over side got wrapped round prop and stalled engine.
Managed to unwind rope and carried on for rest of season regardless.

Only when lifted for A/F was "P" bracket spotted to be at least 75mm out of true. Easy to miss unless you are looking.

Undid 6 bolts and removed bracket, nipped it round to Invicta who popped it on their 50 ton press.
A day later it was installed back on the boat, cost around £75.00.
Very much suspect this is what may have happened to your bracket, simple straightforward fix.
 
Thanks Fred
That's a lot better than what I was thinking.
Probably bring it down to the Medway for repair at the end of the season.

Dave
 
Newbroom said:
Thanks Fred
That's a lot better than what I was thinking.
Probably bring it down to the Medway for repair at the end of the season.

Dave
Click to expand...

Cost of repair really will be down to how hands on you are.
Suspect that anything involving a trip to Brundall may involve a tad more expence.
Would have thought there must be somebody more local to you who could do this job.
 
Your fixed point to align from is your stern tube.

Remove shaft and coupling and inspect, check shaft in a lathe for truth and tail bend.

Fit a new cutless bearing in the stern tube and align from there.

Use a wire or a laser alignment tool.

Remove and rechock p bracket if required or straighten or replace.



You will need a new cutless bearing for the P bracket anyway.
 
Bandit said:
Your fixed point to align from is your stern tube.

Remove shaft and coupling and inspect, check shaft in a lathe for truth and tail bend.

Fit a new cutless bearing in the stern tube and align from there.

Use a wire or a laser alignment tool.

Remove and rechock p bracket if required or straighten or replace.



You will need a new cutless bearing for the P bracket anyway.
Click to expand...

Did "chock" a P bracket as temp repair.
Bought one of those chopped strand glass fibre kits popped a pad of the stuff twixt hull and P bracket pad.
Pulled up bolts carefully to align bracket and shaft and then waited for glassfibre to go off.
Trimmed edges of my new "pad" sealed bolts and nipped up to correct torque.It did not take a very thick pad of fibreglass to correct offset.
Did not really need to remove bracket for later proper repair.
 
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Flynnbarr said:
Harleyford or racecourse for a lift and Steve Beale?
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Neither can lift a 450 the only place on the non tidal Thames to lift her and then move her is Bushnels or Thames & Kennet Shepperton can lift her but cannot move past the crane bay.
I don't know Steve Beale do you have a contact number.

Not to keen on going to Brooms.
 
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Bandit said:
Your fixed point to align from is your stern tube.

Remove shaft and coupling and inspect, check shaft in a lathe for truth and tail bend.

Fit a new cutless bearing in the stern tube and align from there.

Use a wire or a laser alignment tool.

Remove and rechock p bracket if required or straighten or replace.



You will need a new cutless bearing for the P bracket anyway.
Click to expand...

I know how to do the job but unfortunately I am not fit enough any more to do it myself
 
I’d guess it’s the starboard one , I’ve seen a few go like that .
It wasn’t a bad job to sort at all .
The last one just pinched the cutlass bearing making it oval , I tweak it with the porta power sorted it .
 
Newbroom said:
Neither can lift a 450 the only place on the non tidal Thames to lift her and then move her is Bushnels or Thames & Kennet Shepperton can lift her but cannot move past the crane bay.
I don't know Steve Beale do you have a contact number.

Not to keen on going to Brooms.
Click to expand...

That should have read Steve Bil. Old school engineer from up river.
I can pm you his number if you can’t get it,would think someone on broom owners club would have it.
 
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