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Help!
Prop shaft removal on E-Flite 450
Attempting to remove the prop shaft on an e-flite 450 and it's not coming out easily. This motor was involved in a slight mishap and it looks very slightly bent from where it exits the can. I removed the wheel collar type locking in the back but it's not coming out easily. I am removing it from the front side so as not to have the slight bend go thorugh the can, etc. Since this is the first I've removed, I assumed it would slide out farily easily?.
Thanks |
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Not familiar with that particular motor, but often the shaft has flats for the setscrews in the can. Remove them to make sure they arent keeping the shaft from moving. Also support the can near the shaft with a socket or something so you dont put undue pressure on the can while pressing the shaft out...he doesnt do that in this video but thats a larger motor...I broke a small endbell once because I wasnt supporting it properly
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ok.. motor is apart and prop shaft is out but it doesn't look bent. When rolling it on a piece of glass it seems to roll smooth but I guss it could still be slightly bent.
When I pulled the outside rotating can off the magnet a C-clip dropped out. Not really a C-Clip but more like a round thin circular wire with very small cut in it. I know C-clips are more flat. No idea how this could have fallen out assuming it was on the shaft? Nor do I know where it goes since I didnt see it in place. |
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Quote:
As for the shaft being bent... it don't take much! it's hard to see a few thou rolling it on glass... thats all it takes to cause bad vibes at the prop. Check your bearing's as well... seems most of the time I take out a shaft it takes the front bearing with it |
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Ok.. I'm still a little confused.. the video above shows the bearing "ring" going in first. I realize this is a diff motor than the eflite 450 but you state
"Thats a thrust washer... it goes in between the rear motor bearing and wheel collar on the motor shaft." which tells me it goes on the very back side first followed by the wheel collar450 type motor . Camera is broke or i'd post a pic. |
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How is your motor set up? STOCK the park 450 is set up so the the shaft is out the front of the can and the stator is at the rear...this puts the pressure of the prop trying to pull the motor apart on the rear wheel collar... thats why the thrust washer goes inbetween the wheel collar and rear bearing...this washer keeps the wheel collar pressure on the inner race of the rear bearing, remember this is STOCK config.
The motor in the above video is exactly the oppisite.... the pressure trying to pull the motor apart is on the front bearing of the stator... |
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Something very odd is noticed... My mini pulse with a stock e-flite 450 motor takes an 1/8" collet with corresponding drive shaft. A friends PT-19 with the stock e-flite 450 which was the discussion above takes a larger shaft??? It's approx 5/32. So the 1/8" collet / hub doesnt fit. Does this make sense?
Mike |
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Did you buy the PNP Mini Pluse? the motor in the PNP is NOT the e-flight park 450 I was speaking about... yes, the PNP motor is an "E-flight 450" BUT is not the PARK 450. The PNP motor does have a smaller shaft dia.
http://www.horizonhobby.com/Products...rodID=EFLM1400 http://www.horizonhobby.com/Products...210#quickSpecs |
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well that explains it. I picked up the pulse used so cant be sure but it's not eflite throughout so assume it wasnt the PNP. I wonder what woulid be the idea behind putting different size shafts int he same housing... less fragile i suppose...thanks.. mike
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This is the PNP 450 motor from Horizon;
http://www.horizonhobby.com/Products...rodID=EFLM7210 and this is he boxed Park 450 motor: http://www.horizonhobby.com/Products...rodID=EFLM1400. And here are the instructions to R&R the shaft: Shaft Installation This Outrunner motor has a shaft, which exits through the rotating part of the motor. If you want to reverse the shaft to exit through the fixed part of the motor, follow these instructions carefully for changing the shaft installation. NOTE: The user assumes all liability for damage that may occur. 1. Loosen the set screw on the shaft collar and remove the collar from its location against the bearing. 2. Remove the small black donut washer that rests against the bearing. 3. Loosen the set screw in the rotating part of the motor. 4. Slide the shaft through the motor. It may be necessary to use a small hammer to lightly tap the shaft. It is very important that you do not bend the shaft in this process so use extreme caution to assure this does not happen. 5. Re-install the donut washer against the bearing. 6. Re-install the shaft collar back against the washer and bearing. 7. Retighten all setscrews making sure you line up with the flat spot on the shaft. Manual: http://www.horizonhobby.com/ProdInfo...structions.pdf Chuck |
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