Replacing pinion on 450 3D

Shanes · 07-20-2012, 02:22 PM

Hello!
I'm hoping you can tell me how to go about replacing the pinion on my 450 3D. It came off in flight. Have a new one.
Do I take the motor out with the 4 screws?
Many thanks!
s

FuntanaS · 07-20-2012, 03:01 PM

Yeah, you will have to take the motor out of the heli and also take the motor mount off of the motor.

kavic5150 · 07-20-2012, 03:04 PM

Usually a good idea to disconnect all 3 motor wires to keep from bending them while you work on the motor.

Yep, pretty straight forward procedure. Remove all 4 motor mount bolts. You might not need to remove the motor mount if the pinion meshes with the main gear and that grub screw is accessable.

Use some blue loctite on the grub screw before installing it. As long as the motor shaft has a flat spot you shouldnt need any other adhesives to install pinion.

You probably already know this, but if the motor spins the wrong way when you get it all assembled, just swap any 2 motor wires.

Shanes · 07-20-2012, 03:08 PM

Big thank you!

5307thBP · 07-20-2012, 07:13 PM

No need to remove the mount, just the motor. 2 screws from the bottom, removing the ESC makes access easy with a good set of hex drivers.

Shanes · 07-24-2012, 08:04 AM

Ack!
It appears that the shaft on the motor that the pinion attaches to is what broke. Buy new motor?

gdawgs56 · 07-24-2012, 11:31 AM

Oh that stinks. I think u do have to buy a whole
New Motor. If you do u should get the 440 motor since it has a little more
Power for $5 More

Shanes · 07-24-2012, 03:45 PM

Thanks - will do. Why on earth would it break like that after about a dozen flights?
Booooooo!

gixster · 07-24-2012, 04:33 PM

personally i wouldn't spend any more money on the 420 or the 440 from eflite, they wear out fast and you cant get replacement shafts.

If you are going to get a new motor i would get a scorpion, or the re-branded scorpion "NextD" motors. Much higher quality and they have replacement parts available.
The scorpions go for $70-$80 and the nextD motors are about $55

chambers · 07-24-2012, 05:12 PM

I was reading somewhere that you could also use the BL450MX motor from align, its only 50 bucks. Some of the guys here may know more on it.

Shanes · 07-24-2012, 05:22 PM

Good info. Thanks!

FireDoug · 07-24-2012, 05:28 PM

Shanes,

I would not pass go or collect $200.00 before you Call Horizon Hobby and customer service and share with them this story, they are usually very good about product support.

Best Regards
Doug

Skidpad · 07-24-2012, 06:39 PM

Quote:

Originally Posted by FireDoug

Shanes,

I would not pass go or collect $200.00 before you Call Horizon Hobby and customer service and share with them this story, they are usually very good about product support.

Best Regards
Doug

I completely agree! Approach it the right way and you will more than likely receive a new motor for free.

If not, let me know as I have a new 420 I'll sell.

07-20-2012, 02:22 PM	#1
Shanes Registered Users Join Date: Mar 2012 Location: Ottawa, Canada	Replacing pinion on 450 3D Hello! I'm hoping you can tell me how to go about replacing the pinion on my 450 3D. It came off in flight. Have a new one. Do I take the motor out with the 4 screws? Many thanks! s

07-20-2012, 03:01 PM	#2
FuntanaS Registered Users My HF Map location Join Date: Jul 2011 Location: Minnesota	Yeah, you will have to take the motor out of the heli and also take the motor mount off of the motor. __________________ Tarot 450 Pro V2 FBL - Blade mCP X - Blade 450 3D FBL

07-20-2012, 03:04 PM	#3
kavic5150 Registered Users Join Date: Jan 2010 Location: US, east coast	Usually a good idea to disconnect all 3 motor wires to keep from bending them while you work on the motor. Yep, pretty straight forward procedure. Remove all 4 motor mount bolts. You might not need to remove the motor mount if the pinion meshes with the main gear and that grub screw is accessable. Use some blue loctite on the grub screw before installing it. As long as the motor shaft has a flat spot you shouldnt need any other adhesives to install pinion. You probably already know this, but if the motor spins the wrong way when you get it all assembled, just swap any 2 motor wires. __________________ Hoss X4e 6s, Gaui 550, Protos 500 12s, Losi Speed-T. Save the flybar !!

07-24-2012, 11:31 AM	#7
gdawgs56 Registered Users My HF Map location Join Date: Jan 2012 Location: Mesa, Arizona	Oh that stinks. I think u do have to buy a whole New Motor. If you do u should get the 440 motor since it has a little more Power for $5 More __________________ TEAM HELIPROZ 450 FBL: Scorpion -8 motor, Tarot ZYX Fbl 130X: HPO8, DS35, Lynx, Rakon, KBDD, Fusuno, DIY mods NANO CPX BL: SOLD

07-24-2012, 04:33 PM	#9
gixster Registered Users My HF Map location Join Date: Aug 2011 Location: Maple Grove, MN	personally i wouldn't spend any more money on the 420 or the 440 from eflite, they wear out fast and you cant get replacement shafts. If you are going to get a new motor i would get a scorpion, or the re-branded scorpion "NextD" motors. Much higher quality and they have replacement parts available. The scorpions go for $70-$80 and the nextD motors are about $55 __________________ Trex 550e DFC (V Bar,Scorpion HKIII 4025-1100, Rail 556 / 96, CC Edge 100) Trex 450 DFC (MSH Brain, Scorpion 2221-8, Rail 326's, CC Edge lite 50) Futaba 14SG, DX6I, Phoenix 4.0 , Real flight 6

07-20-2012, 03:08 PM	#4
Shanes Registered Users Thread Starter Join Date: Mar 2012 Location: Ottawa, Canada	Big thank you!

07-20-2012, 07:13 PM	#5
5307thBP Registered Users Join Date: Feb 2012 Location: Sobieski, WI, USA	No need to remove the mount, just the motor. 2 screws from the bottom, removing the ESC makes access easy with a good set of hex drivers.

07-24-2012, 08:04 AM	#6
Shanes Registered Users Thread Starter Join Date: Mar 2012 Location: Ottawa, Canada	Ack! It appears that the shaft on the motor that the pinion attaches to is what broke. Buy new motor?

07-24-2012, 03:45 PM	#8
Shanes Registered Users Thread Starter Join Date: Mar 2012 Location: Ottawa, Canada	Thanks - will do. Why on earth would it break like that after about a dozen flights? Booooooo!

07-24-2012, 05:12 PM	#10
chambers Registered Users Join Date: Mar 2011 Location: Putnam CT	I was reading somewhere that you could also use the BL450MX motor from align, its only 50 bucks. Some of the guys here may know more on it.

07-24-2012, 05:22 PM	#11
Shanes Registered Users Thread Starter Join Date: Mar 2012 Location: Ottawa, Canada	Good info. Thanks!

07-24-2012, 05:28 PM	#12
FireDoug Registered Users My HF Map location Join Date: Jan 2012 Location: USA, Corona, California	Shanes, I would not pass go or collect $200.00 before you Call Horizon Hobby and customer service and share with them this story, they are usually very good about product support. Best Regards Doug __________________ I am becoming a better Heli Mechanic than Pilot. Blade CX2, HBFPV2, Blade mSRx, Trex 450 Pro FBL, Blade mCPx, Blade 400 FBL, Blade 450 3D FBL , NANO CPX, 130X - DX8

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