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Nicked Propeller Repair

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发表于 2021-9-1 23:17:58 | 显示全部楼层 |阅读模式
My friend and customer ran his boat in shallow water and the propeller hit the ground, which nicked the edge of the propeller.  I have seen more damage when a propeller hit a branch in the water. The following four pictures show the damage to the propeller. 1. Nicked propeller

2. Nick-1

3. Nick-2

4. Nick-3

The first step was to sand off the paint so that it wouldn’t contaminate the weld. I also sanded off the mushroomed Aluminum near the nick.5.  Sanding paint off

Smith Oxyacetylene TorchMiller Dynasty 200DXLincoln SP-250 MIG WelderClausing/Coldchester 15" Lathe16" DuAll Saw15" Drill Press7" x 9" Swivel Head Horizontal Band Saw20 Ton Arbor Press BridgeportLincoln LE  31 MP & Lincoln 210 MP
Reply:I used a bar clamp to rigidly clamp the propeller to my welding table so that it wouldn’t move while I was working on it.6. Propeller clamped

I used a piece of copper to keep the weld from sagging.7. Propeller ready for welding

Here are three pictures of my welds.8. First Welds

9. Weld-2

10. Weld-3

Smith Oxyacetylene TorchMiller Dynasty 200DXLincoln SP-250 MIG WelderClausing/Coldchester 15" Lathe16" DuAll Saw15" Drill Press7" x 9" Swivel Head Horizontal Band Saw20 Ton Arbor Press BridgeportLincoln LE  31 MP & Lincoln 210 MP
Reply:And here is my setup for grinding the welds.11. Welds ground down

12. Close of one blade

All finished and painted.13. Propeller all done and painted

-Don
Smith Oxyacetylene TorchMiller Dynasty 200DXLincoln SP-250 MIG WelderClausing/Coldchester 15" Lathe16" DuAll Saw15" Drill Press7" x 9" Swivel Head Horizontal Band Saw20 Ton Arbor Press BridgeportLincoln LE  31 MP & Lincoln 210 MP
Reply:Good to go I'd say. Nice repair.ChrisAuction Addict
Reply:Is there any way to get it rebalanced??I know there is a real high end mower blade balancer,, that would probably balance it,,
Reply:Looks like a nice repair - about what I would have done as well.I talked to a prop repair guy once (who had retired and sold his patterns) - he said he didn't balance them after repair.I always wondered how off balance one could be before causing vibration issues.They seem to run for years with unevenly weighted chunks out of them. Pure speculation, I guess welding to shape has to be better than that

Dave J.Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~ Syncro 350Invertec v250-sThermal Arc 161 and 300MM210DialarcTried being normal once, didn't take....I think it was a Tuesday.
Reply:

Originally Posted by MinnesotaDave

Looks like a nice repair - about what I would have done as well.I talked to a prop repair guy once (who had retired and sold his patterns) - he said he didn't balance them after repair.I always wondered how off balance one could be before causing vibration issues.They seem to run for years with unevenly weighted chunks out of them. Pure speculation, I guess welding to shape has to be better than that


Reply:

Originally Posted by SweetMK

Is there any way to get it rebalanced??I know there is a real high end mower blade balancer,, that would probably balance it,,
Reply:

Originally Posted by Don52

I would guess if the original propeller was balanced the repaired one would be pretty good. My friend does plan on getting it balanced.-Don
Reply:Nice job.www.tjsperformance.comDynasty 300 DXHTP 240HTP Microcut 380Hyperthem 85JD2 Hyd Bender and HF Hyd Ring Roller all in one =(Frankenbender)Bpt. Mill/DRO4' x 8' CNC Plasma TableInstagram: tjsperformanceYT: TJS Welding and Fabrication
Reply:Great pictures !! thanks for posting.    https://www.weldingweb.com/images/smilies/biggrin.gifAirco 250 ac/dc Heliwelder Square waveMiller Synchrowave 180 sdMiller Econo Twin HFLincoln 210 MPDayton 225 ac/dcVictor torchesSnap-On YA-212Lotos Cut60D
Reply:If your buddy needs another source to get his prop balanced Proper Props in Wyandotte does great work. 734-764-2470Timmetalcraft by mooseSoutheast Michiganhttps://www.facebook.com/Metalcraftbymoose

  Stupid Hurts!!

Reply:That's a great looking repair job. A guy in Austin that repairs props uses a stick welder with aluminum rods for the aluminum props.
Reply:

Originally Posted by moose

If your buddy needs another source to get his prop balanced Proper Props in Wyandotte does great work. 734-764-2470
Reply:Nice job Don.  What filler did you use?
Reply:

Originally Posted by BillE.Dee

Nice job Don.  What filler did you use?
Reply:

Originally Posted by MinnesotaDave

Looks like a nice repair - about what I would have done as well.I talked to a prop repair guy once (who had retired and sold his patterns) - he said he didn't balance them after repair.I always wondered how off balance one could be before causing vibration issues.They seem to run for years with unevenly weighted chunks out of them. Pure speculation, I guess welding to shape has to be better than that
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