Boatmad.com


Reply
 
Thread Tools Display Modes
 
Old 17-03-2005, 07:20 PM   #1
Registered User
 
scottyboy's Avatar
 
Country: United kingdom
Location: West Sussex
Occupation: Grease Monkey
Interests: Makin my boat faster!
Boat name: S.B Racing
Boat make: Ocke mannerfelt canopied B23 / Zapcat
Engines: Merc 200XS Gen 2 / Tohatsu 50
Cruising area: littlehampton/Southampton

Join Date: Jan 2005
Location: West Sussex
Posts: 2,652
4 blade cleaver repair?

A m8 of mine has a 4 blade cleaver he damaged one of the blades and gave it to a "friend who fixes aeroplane propellors" who then took it on himself to cut the damaged blade off and weld a new one on and has consequently fecked it up! antone know of anywhere i mite be able to get it repaired?
__________________

__________________
Class 3C Mono EPA National speed record holder 95.35 mph Avg!
scottyboy is offline   Reply With Quote
Old 17-03-2005, 07:44 PM   #2
Registered User
 
Tony Davis's Avatar
 
Country: Job Centre
Location: In a box
Occupation: Chaos's gofer
Interests: Skiving
Boat make: Spectre 30
Engines: 2 x Promax 225
Cruising area: In the bath

Join Date: Mar 2004
Location: In a box
Posts: 5,201
No, throw it away!
__________________

Tony Davis is offline   Reply With Quote
Old 17-03-2005, 10:08 PM   #3
Dan
On a roll
 
Dan's Avatar
 
Country: England
Location: Plymouth
Occupation: Anything in metal
Interests: Bristol Rovers, Cider & Boats
Boat name: Aqua Thunder, Badboy
Boat make: Bernico F2, Phantom 21
Engines: Merc 280efi, Merc 260efi
Cruising area: Worldwide

Join Date: Mar 2004
Location: Plymouth
Posts: 2,188
Not sure, BUT it MAY be worth trying Teignbridge props or Advanced Propolsion System. Both in Newton Abbott (Devon) tel numbers should be on the net somewhere. No promises mind you
__________________
All hail to Jail Ale
Dan is offline   Reply With Quote
Old 17-03-2005, 10:25 PM   #4
Registered User
 
scottyboy's Avatar
 
Country: United kingdom
Location: West Sussex
Occupation: Grease Monkey
Interests: Makin my boat faster!
Boat name: S.B Racing
Boat make: Ocke mannerfelt canopied B23 / Zapcat
Engines: Merc 200XS Gen 2 / Tohatsu 50
Cruising area: littlehampton/Southampton

Join Date: Jan 2005
Location: West Sussex
Posts: 2,652
Cheers dan i'll give them a try!
__________________
Class 3C Mono EPA National speed record holder 95.35 mph Avg!
scottyboy is offline   Reply With Quote
Old 18-03-2005, 12:43 PM   #5
Registered User
 
Country: England
Location: South West
Occupation: Development engineer
Interests: Fast boats
Boat name: Xtreme
Boat make: Bernico 21
Engines: Mercury F1, 300 Drag, XR2 "Fingerported"
Cruising area: South West

Join Date: Mar 2004
Location: South West
Posts: 1,043
Angry throw it away

Please don't come anywhere near me or my boat with a prop that has had a blade welded back on.
Any prop shop will advise against this......Not a good idea.
Cyco is offline   Reply With Quote
Old 18-03-2005, 03:06 PM   #6
Registered User
 

Join Date: Mar 2004
Posts: 1,016
Re: throw it away

Quote:
Originally posted by Cyco
Please don't come anywhere near me or my boat with a prop that has had a blade welded back on.
Any prop shop will advise against this......Not a good idea.


Just to be argumentative really.... Why not? Are props forged or cast? Before you start having a pop at me... I am actually curious about this.....
__________________
“Never try to wrestle a pig” ™ The Sparkler Prefect
Jono is offline   Reply With Quote
Old 18-03-2005, 03:49 PM   #7
Registered User
 
Country: England
Location: South West
Occupation: Development engineer
Interests: Fast boats
Boat name: Xtreme
Boat make: Bernico 21
Engines: Mercury F1, 300 Drag, XR2 "Fingerported"
Cruising area: South West

Join Date: Mar 2004
Location: South West
Posts: 1,043
Thumbs down Welded Blade

Because when a prop is made it is one piece.
When you remove a blade then repair it it becomes 2 pieces.
If you are spinning a prop around 7-9000 rpm you will be putting alot of stress through that prop.
The first place that it would break is the weld.
It would start off as a small crack then eventually it would become larger and break away.

No prop shop would touch this this and would most certainly advise you not to run it.
Cyco is offline   Reply With Quote
Old 18-03-2005, 04:06 PM   #8
Registered User
 

Join Date: Mar 2004
Posts: 1,016
Re: Welded Blade

Quote:
Originally posted by Cyco
Because when a prop is made it is one piece.
...
Yes, but if it's cast and then properly welded (which is in effect casting) and then solution annealed which has the effect of turning it back into one casting, where's the problem? I mean faults in turbine blades can be repaired in this manner I believe, so why not props?.... or is it the case that people have tried to do it before with disasterous effects and now no one will touch it?
__________________
“Never try to wrestle a pig” ™ The Sparkler Prefect
Jono is offline   Reply With Quote
Old 18-03-2005, 04:14 PM   #9
Traveling
 
Country: UK
Location: Alderholt
Occupation: Aerospace
Boat name: T/T D2S
Boat make: Midas 27' Cat, Argo 16 Cat. Avon Rib Thingy
Engines: Merc 280-ROS -JSRE,65Xs, 75 Stinger, Yam 60
Cruising area: Any Seedy Bar

Join Date: Sep 2004
Location: Alderholt
Posts: 4,222
Dont fit welded blades on turbines, grind them out to match & balance but no customer wants a welded one, If it lets go the damage is far in excess of any saving on the blade...

I know props arn't cheap but by the time is was correctly repaired and set, profiled, balanced, is it worth it you are only talking about the difference in cost.
BluFin is offline   Reply With Quote
Old 18-03-2005, 04:39 PM   #10
Registered User
 

Join Date: Mar 2004
Posts: 1,016
Quote:
Originally posted by BluFin
Dont fit welded blades on turbines, grind them out to match & balance but no customer wants a welded one, ..

Don't they?..

A quote from Liburdi, who do this sort of work... I'm searching for one from RR as we used to do some weld repair work for one of their suppliers many moons ago...


Conventional processes for component refurbishment are applied routinely in the industry. These processes (Ref 3, 4) include chemical stripping, superalloy welding, diffusion brazing, heat treatments, and re-coating with diffusion, overlay, and TBC coatings.


I appreciate that there are now "super laser" type methods of repairing, which this company now use to extend the life of the blades, but a Prop is far less "high tec" than a blade....well at least mine is..
But I think your point on cost is the deciding factor..
__________________
“Never try to wrestle a pig” ™ The Sparkler Prefect
Jono is offline   Reply With Quote
Old 18-03-2005, 04:42 PM   #11
Registered User
 

Join Date: Mar 2004
Posts: 6,862
Smartarse!
Matt is offline   Reply With Quote
Old 18-03-2005, 05:37 PM   #12
Traveling
 
Country: UK
Location: Alderholt
Occupation: Aerospace
Boat name: T/T D2S
Boat make: Midas 27' Cat, Argo 16 Cat. Avon Rib Thingy
Engines: Merc 280-ROS -JSRE,65Xs, 75 Stinger, Yam 60
Cruising area: Any Seedy Bar

Join Date: Sep 2004
Location: Alderholt
Posts: 4,222
Not saying you can't weld repair It just most customers will not take that option they will replace the blade.
Knowing what people are like if the weld let go I can assure you they would be coming after you with there legal team for a replacement engine not just the blade or damaged stage. fekers...
__________________

BluFin is offline   Reply With Quote
Reply

« Wanted | K3 »
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 09:36 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.