Need help, Mejzlik prop wont fit in alum. spinner
05-22-2002, 02:27 AM
#2
Need help, Mejzlik prop wont fit in alum. spinner
Hey John...I had to buy an "M"(easier then trying to spell them) spinner for my Extra. What I got was a Tru-Turn that had that special cut. You might check Don at Don's hobby if he might have an idea. Also might try a local machine shop that could machine your existing spinner. I'm fortunate I found a guy that does this stuff cheap for my planes. Those machinist like small challenges most of the time. I know a machine shop sure can do a much better job then I could, it's amazing what they do with all those cool tools.
Hope this helps.
Hope this helps.
05-22-2002, 10:56 AM
#3
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Need help, Mejzlik prop wont fit in alum. spinner
Its a common problem.I just finished opening up a Dave Brown 3 1/4 to fit 20" props.I use a dremel tool with a steel metal cutting bit.Ink along the edge of the cut so you can judge your progress,and do a little at a time checking the prop fit often.Usually both sides and the depth of the prop cutout have to be opened up a little.Make sure the edge of the spinner does not touch the prop and you are done.You can smooth up the edge of the cuts with some fine grit sandpaper for a professional look.Its a good idea to rebalance the spinner too,IMO.
There are probably other ways to do this ,and maybe better and easier too ,but this method has worked for me on four spinners...
There are probably other ways to do this ,and maybe better and easier too ,but this method has worked for me on four spinners...
05-23-2002, 12:07 PM
#4
Spinner hogging made easy!!!
If you have a router, this is such an easy and clean method you will not believe it until you try it.
Mount a router on a board so that you have about 1/3" of cutter poking through. Lay the board between two saw horses, or tables, or your workmate (get the idea?) so that the router is underneath and the bit is sticking up. Now, being careful not to route your fingers off, you can easily and very accurately enlarge those slots. A good router bit will eat away the aluminum quite cleanly and because the spinner is held firmly against the board and is being moved against the cutter, the chances of slipping and scarring the spinner's outside is almost zero. Another minute with a half round file will dull the edges and make a professional job of it.
Eye protection is advised as you will want to watch very closely to exactly where the bit is cutting, and do not rest your hand on the bit while you admire your work.
Mark
Mark
Mount a router on a board so that you have about 1/3" of cutter poking through. Lay the board between two saw horses, or tables, or your workmate (get the idea?) so that the router is underneath and the bit is sticking up. Now, being careful not to route your fingers off, you can easily and very accurately enlarge those slots. A good router bit will eat away the aluminum quite cleanly and because the spinner is held firmly against the board and is being moved against the cutter, the chances of slipping and scarring the spinner's outside is almost zero. Another minute with a half round file will dull the edges and make a professional job of it.
Eye protection is advised as you will want to watch very closely to exactly where the bit is cutting, and do not rest your hand on the bit while you admire your work.
Mark
Mark
05-23-2002, 05:53 PM
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Need help, Mejzlik prop wont fit in alum. spinner
I don't know the part number, but the Dremel diamond bit works great- used it on my 3 inch aluminum spinner, only took a few minutes and got a great looking finish.
But, BE SURE to balance afterwards. These metal spinners weigh a lot and a little out of balance, even at relatively small diameter, is nearly as bad as an out-of-balance prop.
- George
But, BE SURE to balance afterwards. These metal spinners weigh a lot and a little out of balance, even at relatively small diameter, is nearly as bad as an out-of-balance prop.
- George
05-23-2002, 11:07 PM
#9
Need help, Mejzlik prop wont fit in alum. spinner
Actually, I think the Topflite prop balancer will work for you. There's several things that balancer will work with. Just put shaft through the spinner, with backplate in place, use the cones in each end to sandwich the spinner/backplate in place, and have something to fine grind here. Probably a Dremel will do what you need...I've not done this like this, so I'm basically speaking out of turn here 
But hey, I've done that before. I'm interested to here feedback on this one though, 
Good luck John.
But hey, I've done that before. I'm interested to here feedback on this one though, Good luck John.
05-24-2002, 12:33 AM
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Need help, Mejzlik prop wont fit in alum. spinner
That Router idea sounds slick,but like the other gent I dont own one.The top flite balancer is the one I use too,and Im pretty sure the original instructions detailed how to do spinners,but I do it exactly as described above .I tried various stones,and the diamond bits too in my dremel but found the steel rasp worked best and slid around less.More than 1 way to skin a cat I guess.
The Dave Brown spinner is very light ga. material compared to some I have used and hence easier to balance,and it looks good too......IMO
The Dave Brown spinner is very light ga. material compared to some I have used and hence easier to balance,and it looks good too......IMO
05-24-2002, 04:51 AM
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Need help, Mejzlik prop wont fit in alum. spinner
What Dale says--it works. Just go slow and carefully. Use those small jewelers (swiss) files to finish and tweek.
Sam
Sam
