|
|
|
| Construction Ideas, Hints and Tips For all the builders out there. Ask questions, make suggestions, trade tips. |
 |
|
|
Thread Tools | Display Modes |
05-01-2016, 07:18 PM
|
#1 |
|
RCC Supreme Contributor
I am: Dave Holmes
Join Date: Mar 2004
Location: Prince Edward County, Ontario (no longer Brampton!)
Radio of choice:
Futaba 72 Mhz # of RCs: 30+
Feedback: 4 / 100%
Posts: 4,393
Total Props: 16
|
Bent my shaft!
I bent the shaft on a Turnigy D2836/8 motor. It's a 4 mm diameter shaft and much to my dismay HK don't carry replacements! I bought a couple of SK3-2836 shaft sets thinking they would work, but no such luck. the end the prop adapter goes on is machined down to about 3mm, it has a flat in the wrong place and the groove for the retaining E clip is at the wrong end.
The only 4 mm shafts I have been able to discover that look suitable seem to be all in Florida with hellacious shipping charges. Any suggestions where I can get something somewhere in Ontario (preferably)? Even if I could get a length of 4 mm steel rod I'm sure I could make one.
__________________
Dave Holmes The older I get, the better I used to be! 
|
|
 .
|
| Sponsored Links - Subscribe to remove this ad. |
|
|
|
05-01-2016, 07:51 PM
|
#3 |
|
RCC Pro Contributor
I am: Daren M.
Join Date: Jan 2007
Location: Mississauga, ON
Radio of choice:
IX12 Feedback: 28 / 100%
Posts: 1,928
Total Props: 18
|
Re: Bent my shaft!
Hi Dave, I searched Hobby Hobby for 4mm shaft, and they have quite a few choices. They look like shock shafts, and a few motor shafts. Lots of different lengths to choose from too.
I can't copy and paste the results of search page. Just search 4mm shaft in the search window. Good luck. Daren
__________________
The secret to a good flight is to be able to finish the flight and only bend over once to pick up your plane! |
|
|
.
|
|
|
|
|
05-01-2016, 08:07 PM
|
#4 |
|
RCC Supreme Contributor
I am: Len S
Join Date: Mar 2009
Location: Kelowna, BC
Radio of choice:
DS16 Jeti and Airtronics SD-6 # of RCs: 10
Feedback: 257 / 100%
Posts: 11,770
Total Props: 136
|
Re: Bent my shaft!
Brushless shafts are usually ground to just a few thou under the 4mm so that you have a press fit. Music wire being "close" won't work in my opinion. As you say the replacement shaft that you have has the C clip on the wrong end.... Switch ends and if the flat doesn't match then make your own flat ..... Have done it before and it will work.
Just make sure the shaft is long enough so the collet prop adapter clips all the way on |
|
|
.
|
|
05-01-2016, 08:42 PM
|
#5 |
|
RCC Pro Contributor
I am: Larry
Join Date: Jul 2010
Location: Ottawa, Ont.
Radio of choice:
Spektrum Feedback: 9 / 100%
Posts: 1,987
Total Props: 42
|
Re: Bent my shaft!
I have HK shafts in a package marked "Park 480" & they are 4 mm X 50 mm, but no lock ring groove. Looks like they are designed to use a locked collar (like a wheel collar). Flats are ground in at the 2 thru 4 mm mark & 33 mm thru 38 mm mark. Might be able to cut a groove with either a thin cut off wheel or file while rotating the shaft in a drill.
__________________
My guide to R/C photography. https://www.rccanada.ca/rccforum/sho...d.php?t=147971 |
|
|
.
|
|
05-02-2016, 08:41 AM
|
#6 |
|
RCC Supreme Contributor
I am: Cliff S
Join Date: Feb 2007
Location: Belleville Ont.
Radio of choice:
Hitec, Futaba - FM # of RCs: 10
Feedback: 25 / 96%
Posts: 3,202
Total Props: 18
|
Re: Bent my shaft!
Many years ago my dad straightened the shaft on my nitro motor for me. He chucked the bent end in a lathe and kept tapping the other end until it ran straight. I have tried this method on some other things and it works great.
__________________
Kip "If my being here has made your day a little more pleasant then I have done my job" Red Skelton 1913 - 1997 (famous Comedian) |
|
|
.
|
|
05-02-2016, 09:10 AM
|
#7 |
|
RCC Senior Contributor
I am: David
Join Date: Feb 2011
Location: Hebbville N.S
Radio of choice:
Tactic TTX650 # of RCs: 12
Feedback: 31 / 100%
Posts: 550
Total Props: 4
|
Re: Bent my shaft!
This might sound kind of funny but I broke the shaft off of a 4mm motor I had and like you couldn't find a replacement...after looking for about a week I grabbed a Philips screw driver off my shelf and put it in the bell housing and It worked!!! I took my dremel and cut it to lengh, carefully cut the clip groove and set screw notch and it worked flawlessly.
__________________
If you're planning on way-overpowering your plane and "flying like a maniac", you might consider gluing the tail feathers down to avoid flutter. 
|
|
|
.
|
|
05-02-2016, 10:28 AM
|
#8 |
|
Level 3 Supporter
★ Site Supporter ★
I am: Gary L
Join Date: Aug 2008
Location: Tecumseh, Ontario
Feedback: 125 / 100%
Posts: 8,686
Total Props: 101
|
Re: Bent my shaft!
I used to tear apart old printers and such as they provided hardened shafts of different diameters. That may be another source.
If nothing works out I can have a boo through my stuff and see what's available.
__________________
I know there's money in aviation........I put it there! |
|
|
.
|
|
05-02-2016, 11:02 AM
|
#9 |
|
RCC Senior Contributor
I am: David
Join Date: Feb 2011
Location: Hebbville N.S
Radio of choice:
Tactic TTX650 # of RCs: 12
Feedback: 31 / 100%
Posts: 550
Total Props: 4
|
Re: Bent my shaft!
If you find yourself looking for a 3.17mm shaft they can be found in old cd rom drives. the lazer assembly rides on them.
__________________
If you're planning on way-overpowering your plane and "flying like a maniac", you might consider gluing the tail feathers down to avoid flutter.
|
|
|
.
|
|
| Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
| Thread Tools | |
| Display Modes | |
|
Linear Mode
Your Privacy Choices