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elwood
Joined: Wed Nov 06, 2013 5:21 am Posts: 7150 Location: Lost
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Has anyone ever repaired a powerfin prop? I have 2 props that need some repair, one hit a rock and dang near put a hole in the blade about 2" from the tip. another has a delamination on the leading edge about 3" long. Trash? or repairable? I was going to send them back to Powerfin to get repaired but they seem to be out of business. Just wanted a good prop for a spare. I watched the sensenich repair video, but not sure these blades are made the same.
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Thu Aug 08, 2024 4:01 pm |
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Hillberg
Joined: Thu Nov 07, 2013 12:56 am Posts: 3066 Location: VERY LOW LOW LOW EARTH ORBIT
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Wood core covered in fiberglass / carbon? Foam core? fibers through and through? Abrasion strips ? Pictures?
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Thu Aug 08, 2024 7:34 pm |
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MadMuz
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Joined: Tue Sep 02, 2014 7:45 am Posts: 10126 Location: Poona, Qld, OZZY
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_________________ I do all of my own stunts..... most of them are even planned! Ok, Ok.... some of them are planned..
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Fri Aug 09, 2024 12:21 am |
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elwood
Joined: Wed Nov 06, 2013 5:21 am Posts: 7150 Location: Lost
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I'll try to post some pics later.
_________________ It's never too late to be a bad example.
I spent all my money on Bikes, Broads, and Booze, the rest I wasted.
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Fri Aug 09, 2024 5:24 am |
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elwood
Joined: Wed Nov 06, 2013 5:21 am Posts: 7150 Location: Lost
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Here are some pics.
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_________________ It's never too late to be a bad example.
I spent all my money on Bikes, Broads, and Booze, the rest I wasted.
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Sat Aug 10, 2024 5:11 pm |
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Hillberg
Joined: Thu Nov 07, 2013 12:56 am Posts: 3066 Location: VERY LOW LOW LOW EARTH ORBIT
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Erosion on the leading edge and delamination pix # 1 Clean area with alcohol let dry, Inject cryo glue into void area add powder and drop glue into surface to build up then sand smooth and topcoat with paint...
Impact damage on blade face Clean out loose fibers (fingers only) alcohol wash let dry, spread powder in damaged area and drop cryo into area. Thin layers at a time build up flush to blade face
Impact damage on Blade back area with crazed surface (This is the result from blade face impact) Sand area and clean look for cracking add cryo into cracks let dry between coats
Blades look like solid fiber build up no cores, Inspect before and after repair and make entry on propeller records . Weight limits apply, balance A good preflight inspection for all blades, They don't look too bad.
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Sat Aug 10, 2024 6:23 pm |
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elwood
Joined: Wed Nov 06, 2013 5:21 am Posts: 7150 Location: Lost
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Ok thanks Hillbunny, I watched the Hartzell repair video where he put a carbon fiber patch on with epoxy and then clamped. But not sure of construction differences. [Youtube]lYwKbH2U4EI&t=823s[/Youtube] https://www.youtube.com/watch?v=lYwKbH2U4EI&t=823s
_________________ It's never too late to be a bad example.
I spent all my money on Bikes, Broads, and Booze, the rest I wasted.
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Sat Aug 10, 2024 6:44 pm |
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Hillberg
Joined: Thu Nov 07, 2013 12:56 am Posts: 3066 Location: VERY LOW LOW LOW EARTH ORBIT
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Looks like a solid blade Hartzel same style but larger then yours and his repair had Hysol epoxy (great stuff) A silicon pad (engine baffle material on a wood board) to clamp over the repair area to force the resin deep into the repair. If you use cryo in layers or resin with a cover the idea is to get the glue wetted deep into the fibers.
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Sat Aug 10, 2024 7:25 pm |
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elwood
Joined: Wed Nov 06, 2013 5:21 am Posts: 7150 Location: Lost
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I will give it a try, I got a nick in my prop at Bensen days, (repaired with super glue and soda, and a file) and thought Hmmm... I wonder If I should have a spare prop just in case.
_________________ It's never too late to be a bad example.
I spent all my money on Bikes, Broads, and Booze, the rest I wasted.
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Sat Aug 10, 2024 7:39 pm |
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Kolibri
Joined: Fri Oct 13, 2023 11:39 pm Posts: 139
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Post-repair balancing may be a bitch....good luck!
_________________ Famous-Infamous for speaking the truth on "the other forum" from 2014-2019.
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Wed Aug 14, 2024 2:34 am |
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