boat prop 101

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thought i would share ; remove damage area,straighten on the needed pitch block (15P right handweld with copper templet, weld all baldes, turn over and weld other sidegrind with 4 1/2 " then use 1/4 " angle with roloc 2" disc 50grit \then finish on big belt grinder 80 grit belt , smooth with cotton buff pad using PB 80paint and call it done Attached Imagesidealarc 250/250 ac-dc tigidealarc 250/250 ac-dc tig #2 used for sticklincoln sp100hh125dual arbor grinder polisher30 yrs of hand tools52 pitch blocks 6p-26prake gauge -pitch gaugeG&D prop repair 918-207-6938Hulbert,okla 74441
Reply:more pics Attached Imagesidealarc 250/250 ac-dc tigidealarc 250/250 ac-dc tig #2 used for sticklincoln sp100hh125dual arbor grinder polisher30 yrs of hand tools52 pitch blocks 6p-26prake gauge -pitch gaugeG&D prop repair 918-207-6938Hulbert,okla 74441
Reply:Nice reconstructive surgery doc. MM200 w/Spoolmatic 1Syncrowave 180SDBobcat 225G Plus - LP/NGMUTT Suitcase WirefeederWC-1S/Spoolmatic 1HF-251D-1PakMaster 100XL '68 Red Face Code #6633 projectStar Jet 21-110Save Second Base!
Reply:That's a nice work.Do you ever work on bronze propellers?-IanMiller Dynasty 350Miller XMT 304
Reply:Props must be much more expensive than I thought.  How did the cost of that repair compare to the price of a new prop?Tim
Reply:thank you duaneyes i do the bronze (nibral) props  that one was 55bux ...cost of a new is about 179.00-225.00 depending  on the makercan buy a solas with no hub for 79.00 ..with new torq flo insert runs 35.00 extraidealarc 250/250 ac-dc tigidealarc 250/250 ac-dc tig #2 used for sticklincoln sp100hh125dual arbor grinder polisher30 yrs of hand tools52 pitch blocks 6p-26prake gauge -pitch gaugeG&D prop repair 918-207-6938Hulbert,okla 74441
Reply:Your copper backers are in all the pitches too? Now for me you wouldn't have to polish and paint. The prop will be back after a couple of trips. I never go out without a spare prop. "The things that will destroy America are prosperity at any price, peace at any price, safety first instead of duty first, the love of soft living and the get rich quick theory of life." -Theodore Roosevelt
Reply:Looks great. I have always wondered how they repaired these. I guess, I had assumed it was more high tech. Do you balance them after your done? Thanks for the photos.
Reply:Originally Posted by prop-doctorthank you duaneyes i do the bronze (nibral) props  that one was 55bux ...cost of a new is about 179.00-225.00 depending  on the makercan buy a solas with no hub for 79.00 ..with new torq flo insert runs 35.00 extra
Reply:Ha - now the secret is revealed!Yikes, now every 'newbie' with 30 yrs of hand tools, 52 pitch blocks 6p-26p, a rake gauge-pitch gauge, a dual arbor grinder polisher and a 250 amp ac-dc tig will be repairing props!prop-doctor - you have done it again!Well done!Rick V 1 Airco Heliwelder 3A/DDR3 CTC 70/90 amp Stick/Tig Inverters in Parallel1 Lincoln MIG PAK 151 Oxy-Acet
Reply:Why run an 'old-tech' aluminum prop?I had an 18 foot bowrider with a 115hp outboard.I gained 2 mph by switching to a stainless steel prop!All was good... wonderful, until I ran over a 'dead-head' (submerged log).The SS prop looked like a closed flower - all blades folded over each other.The bad news... I bent the output shalft.  Result was $1700 repair!  (Insurance paid.)Lesson learned!The reason to use an aluminum prop is to avoid serious damage; the blades break away before the output shalf gets bent! With aluminum, you can just change out the prop on the water and be on your way; no tow to the marina and week(s) lost in the repair shop.Rick V 1 Airco Heliwelder 3A/DDR3 CTC 70/90 amp Stick/Tig Inverters in Parallel1 Lincoln MIG PAK 151 Oxy-Acet
Reply:Looks nice Prop!Do you have to adjust or tune the copper templates from time to time? Seems like they could move around pretty easily after heating & softening.Matt
Reply:the copper temps are just the shape of the blade that conforms to the flat or progression of said blade, i have temps for all makes of blades pitch is obtained when straightened on the block yes they all get balanced after welded and before the final sand(before paintall props are Tig welded; alum is AC, SS and Nibral are DC   you will incress performance by switching to SS over alum ,, but run the risk of severe damagesthe temps hold up real well, they just give you a shape of the blade  THANK YOU for all the kudos guysidealarc 250/250 ac-dc tigidealarc 250/250 ac-dc tig #2 used for sticklincoln sp100hh125dual arbor grinder polisher30 yrs of hand tools52 pitch blocks 6p-26prake gauge -pitch gaugeG&D prop repair 918-207-6938Hulbert,okla 74441
Reply:Doc, nice minor repair on that prop!Headed up to Lake Louise (Alaska) next month, I'm sure I'll be chewing another one...  8)
Reply:thanks  wiregeek  yep that one was an easy one ,i have em a lot worsegot a pontoon and 4 more props 2day  I LOVE IT when the lake is  lowidealarc 250/250 ac-dc tigidealarc 250/250 ac-dc tig #2 used for sticklincoln sp100hh125dual arbor grinder polisher30 yrs of hand tools52 pitch blocks 6p-26prake gauge -pitch gaugeG&D prop repair 918-207-6938Hulbert,okla 74441
Reply:you ever do any mud motor props ?350P 30A spool gun cut master 51  syncro 250 other stuff " take a dog off the street and make him prosper and he will not bite you sad the same cannot be said for man" i didnt use punctuation just to piss you off
Reply:not around here mostly outboards ,IO and inboards nibralhave done some impellers (squirt boats )if in not mistaken they are a weedless style propidealarc 250/250 ac-dc tigidealarc 250/250 ac-dc tig #2 used for sticklincoln sp100hh125dual arbor grinder polisher30 yrs of hand tools52 pitch blocks 6p-26prake gauge -pitch gaugeG&D prop repair 918-207-6938Hulbert,okla 74441
Reply:yup usally 2 blade heavy cup and thick meant to bounce of stuff and keep going usually lol biggest enemies are sand and tulle's there the devil lol here's what happens when ya go through tulies to slow  350P 30A spool gun cut master 51  syncro 250 other stuff " take a dog off the street and make him prosper and he will not bite you sad the same cannot be said for man" i didnt use punctuation just to piss you off
Reply:Originally Posted by Rick VThe reason to use an aluminum prop is to avoid serious damage; the blades break away before the output shalf gets bent!
Reply:Originally Posted by umahunteryup usally 2 blade heavy cup and thick meant to bounce of stuff and keep going usually lol biggest enemies are sand and tulle's there the devil lol here's what happens when ya go through tulies to slow
Reply:Originally Posted by umahunteryup usally 2 blade heavy cup and thick meant to bounce of stuff and keep going usually lol biggest enemies are sand and tulle's there the devil lol here's what happens when ya go through tulies to slow
Reply:what about the skeg of an outboard ?  My 115hp yam has run over the odd obstruction prior to my ownership and there are a few chunks missing. Can this be repaired without having to remove the leg ?
Reply:umahunter thats just CAMO lol just because it called weedless they aint and for the pin thru prop yep if its a SS pin that happens you can use a brass pin but will shear more often for the skeg i have 3 ways to fix them : a full skeg --a half skeg or make a piece cut out like a puzzle pieceor just pad weld it back bead after bead  build back have done them on the boat or off --off is easyer quicker BUT  once you replace the Whole skeg it has a weak spot and can break off again IF HITidealarc 250/250 ac-dc tigidealarc 250/250 ac-dc tig #2 used for sticklincoln sp100hh125dual arbor grinder polisher30 yrs of hand tools52 pitch blocks 6p-26prake gauge -pitch gaugeG&D prop repair 918-207-6938Hulbert,okla 74441
Reply:brucer actually i do have a rock guard on there that keeps me outta the sand pretty good. ive got a mudbuddy 35 thats got head work roller rockers and rods cam mikuni carb and pipes. if im going at good speed i dont have any problems with tulies or grass but when navigating lil backwater trails at idle mostly they ball upi will say that even though they were balled up in that pic it was still pushing the boat i know how ya fill about the dog. i have never been on any of my boats or even out without my lab only time he doesnt go is during deer season me and that dog have had some fun times for sure oh the crap weve got into chasen birds best friend right there  Last edited by umahunter; 06-18-2011 at 01:44 PM.350P 30A spool gun cut master 51  syncro 250 other stuff " take a dog off the street and make him prosper and he will not bite you sad the same cannot be said for man" i didnt use punctuation just to piss you off
Reply:sorry for the jack nice work on the prop prop doc wish we had someone who could do it round here ive gotten pretty good at staying outta the sand in my big boat but my lil long tail prop i use for a small river here is another story would be nice to rebuild the edge sand is the devil lol unless your a prop guy then sand is your friend lol 350P 30A spool gun cut master 51  syncro 250 other stuff " take a dog off the street and make him prosper and he will not bite you sad the same cannot be said for man" i didnt use punctuation just to piss you offyep sorry for the hi-jack prop-doctor..  your work looks high quality.... if i still had a boat you would get my prop business... umahunter, nice looking rig, and good looking buddy too.. dont get no bettter than that..tackleexperts.comwww.necessityjigs.comhttps://www.facebook.com/groups/mach...dingequipment/
Reply:no prob   and thank you  for da ata boy i try to do me best with what i got to work with ...some are junk to weldidealarc 250/250 ac-dc tigidealarc 250/250 ac-dc tig #2 used for sticklincoln sp100hh125dual arbor grinder polisher30 yrs of hand tools52 pitch blocks 6p-26prake gauge -pitch gaugeG&D prop repair 918-207-6938Hulbert,okla 74441
Reply:Originally Posted by Rick VWhy run an 'old-tech' aluminum prop?I had an 18 foot bowrider with a 115hp outboard.I gained 2 mph by switching to a stainless steel prop!All was good... wonderful, until I ran over a 'dead-head' (submerged log).The SS prop looked like a closed flower - all blades folded over each other.The bad news... I bent the output shalft.  Result was $1700 repair!  (Insurance paid.)Lesson learned!The reason to use an aluminum prop is to avoid serious damage; the blades break away before the output shalf gets bent! With aluminum, you can just change out the prop on the water and be on your way; no tow to the marina and week(s) lost in the repair shop.
Reply:i will try to help if i canthe pitch blocks can run some bux..  but Tig is the only way to do them guess a person could Mig em.. but you would have a lot of build up to grind offif sux to run some nice beards, an then grind them downidealarc 250/250 ac-dc tigidealarc 250/250 ac-dc tig #2 used for sticklincoln sp100hh125dual arbor grinder polisher30 yrs of hand tools52 pitch blocks 6p-26prake gauge -pitch gaugeG&D prop repair 918-207-6938Hulbert,okla 74441
Reply:Nice job on that prop!I'm also thinking of getting into the business and just received my first prop to practice on. I'm also curious about your copper backing plates for welding. They just look like copper plates that you cut out and formed using a pitch block. How thick are they? Did you make them yourself?Also just wondering if you have any tips for a newbie just starting to work on props? I plan on starting with just aluminum but may also add stainless if all goes well!ThanksDave
Reply:hey  the copper templates were bought from rundquist and are about  .020- .040 thickand are the shape of blade guess you could cut out your own. was easyer to just buy, that way i had all the shapes needed. i have 30 different templates. and have made someidealarc 250/250 ac-dc tigidealarc 250/250 ac-dc tig #2 used for sticklincoln sp100hh125dual arbor grinder polisher30 yrs of hand tools52 pitch blocks 6p-26prake gauge -pitch gaugeG&D prop repair 918-207-6938Hulbert,okla 74441
Reply:Nice worl Prop-DoctorI had much rather you repair one from me than for me than to have to buy a new one. I always run Aluminum rather than risk wrecking the foot. Talk about the lake being low - this picture was taken at Lake Wylie in North and South Carolina a few year ago. As you can see, the hazard buoy wasn't doing much good here. Attached Images
Reply:Originally Posted by prop-doctorhey  the copper templates were bought from rundquist and are about  .020- .040 thickand are the shape of blade guess you could cut out your own. was easyer to just buy, that way i had all the shapes needed. i have 30 different templates. and have made some
Reply:would like to know the balance after completion of the work of reconstruction, as much concerned to make a wall similar to the original is always more grams of making an irregular rotation, very good work, greetings.
Reply:too bad they quit making them. if you can, use some undamaged props to make someif you would like i can trace mine on paper to help you out PM me your address and i will mail them  ..as for the balance -- it is done before finish sanding.. if any is to be removed  it is ground off the back side of blade . never from the edges or positve (front) side of bladeidealarc 250/250 ac-dc tigidealarc 250/250 ac-dc tig #2 used for sticklincoln sp100hh125dual arbor grinder polisher30 yrs of hand tools52 pitch blocks 6p-26prake gauge -pitch gaugeG&D prop repair 918-207-6938Hulbert,okla 74441
Reply:where did you get the pitch blocks?
Reply:they were with the business when i started in 1991. i bought it from the bank after the second owner walked out after owning it for 6 months. worked for the first owner for 2 yrs then she sold it to 2nd guy so i have been first employee/ now owner 1994You can get pitch blocks from Rundquist and if you look i have seen some repair supplies/equipment for sale if you search for the stuff.just to let you know some blocks are NOT cheapidealarc 250/250 ac-dc tigidealarc 250/250 ac-dc tig #2 used for sticklincoln sp100hh125dual arbor grinder polisher30 yrs of hand tools52 pitch blocks 6p-26prake gauge -pitch gaugeG&D prop repair 918-207-6938Hulbert,okla 74441
Reply:Great job. I am really amazed. Did you do the entire reconstruction work yourself? It is simply great buddy.
Reply:I run a marina, currently we send our props out.  I wouldn't mind trying it myself but I have a couple questions.  Do you buy rubber hubs for those that are pressed in for those props using shear rubber instead of flo torque or shear pins? How do you balance them When done?  The only props I use are for honda 8 HP's and Merc 25 (9RH), but we go through 50 or so a season.
Reply:I know this is old, but ... how'd ya get my prop!?!?!