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-   -   One way to make a prop hub (https://www.rcuniverse.com/forum/engine-conversions-92/9708888-one-way-make-prop-hub.html)

Scota4570 05-04-2010 12:18 AM

One way to make a prop hub
 
I thought this might be of some interest to the group. This is one way, no the only way, certainly not the fastest way. I have had less trouble with my props being out of balance wih this method. It really bother me when the engine shakes more than it should so, I prefer to spend the extra time.

The wife is setting up a website. She wanted me to document some of the things I do while hold up in the shop. This was a contribution to the cause. If anyone finds any mistakes let me know so she can fix it.

http://armstrongplace.com/ScotsGarage.aspx

w8ye 05-04-2010 01:03 AM

RE: One way to make a prop hub
 
Tell Michelle she did a good job.

av8tor1977 05-04-2010 01:09 AM

RE: One way to make a prop hub
 
Nice work.

AV8TOR

av8tor1977 05-05-2010 12:14 PM

RE: One way to make a prop hub
 
Could you post some good close up pictures of that boring bar you made from music wire for me?

Thanks,
AV8TOR

Scota4570 05-05-2010 10:39 PM

RE: One way to make a prop hub
 
1 Attachment(s)
A flat bed scanner is a good way to do little flat objects. Here are the boring bar pictures. The black marks are for depth of cut. Basically a boring bar is a lathe tool sideways on the end of a stick. If you can make a lathe tool bit you can do this. Old two flute milling cutters make excellent boring bars. Drill bits work too.

av8tor1977 05-05-2010 11:01 PM

RE: One way to make a prop hub
 
Thanks!

Yeah, I've used that scanner trick before. Saves some time for quick pics of items. Just don't have a printer/scanner anymore right now... [:o]

AV8TOR

captinjohn 04-20-2012 01:02 PM

RE: One way to make a prop hub
 
I bought a nice little boring bar and made a holder for it...works nice. Capt,nhttp://www.rcuniverse.com/forum/js/f.../thumbs_up.gif

bluejets 04-20-2012 04:25 PM

RE: One way to make a prop hub
 
I notice your machine has a chuck "made in England" so not "all american" I guess.
Do agree there are many chinese rubbish machines out there, some are better than others, mostly the ones from Taiwan.
Not possible to get a "true running part" from a 3 jaw chuck after it has been removed and refitted after machining outer surface. Any machinist will tell you that, it is one reason why there are 4 jaw chucks. 1 thou runout doubles when you bore the centre hole.
Most 3 jaw from England will have around 1 thou so it is not surprising unless the jaws have been stretched or the chuck mis-handled at some time in it's life.
You can get a cheap 4 jaw made in India for example that will give 100% accuracy for these type of jobs even though they may appear a bit junky. Suffice to say the tailstock centre is properly aligned to begin with.

bluejets 04-20-2012 04:28 PM

RE: One way to make a prop hub
 
(reply double posted itself)


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