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GP PT20 electric motor mounting....

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Old 03-26-2013, 12:48 PM
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Fastsky
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Default GP PT20 electric motor mounting....

Hi, helping a flying buddy build a PT20 kit. He wants to go electric and has bought a motor. Its a rotating can type so a clamp type mount won't work. The mount also attaches to the front right behind the prop. It is not interchangeable to the back. It needs to be mounted about 3" out from the firewall. Will a stand off type mount work?? Any other ideas will be appreciated!! [8D]
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Old 03-26-2013, 02:37 PM
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Hokie Flyer
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Default RE: GP PT20 electric motor mounting....

The motor should come with an "X" mount and a second prop adaptor that bolts on to the rotating can (opposite end from the output shaft).  This prop adaptor allows you to install the motor "backwards".  Mount the X mount to the firewall using stand-offs.


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Old 03-26-2013, 02:52 PM
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Hokie Flyer
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Default RE: GP PT20 electric motor mounting....

Here's an alternative approach.  Took a few minutes to find it.  Tower sells this style mount for electric motors.


Rob

http://www3.towerhobbies.com/cgi-bin...&I=LXLCL3&P=ML
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Old 03-27-2013, 06:14 AM
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Walt Thyng
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Default RE: GP PT20 electric motor mounting....

Another , somewhat lighter, approach is to bolt an oversize "X" mount to the front of the motor then use stand-offs to get the proper firewall to back of prop distance. I use nylon spacers that I get from a hardware or big box store - cheaper lighter and flexible.
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Old 03-27-2013, 07:38 AM
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Default RE: GP PT20 electric motor mounting....

Hi, I haven't been able to find a prop adapter that bolts onto the rotating can. The mount at Tower Hobbies is for a much smaller motor. I do like the idea of using the nylon spacers and will check to see what is available. Thankx for the responses!
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Old 03-27-2013, 10:28 AM
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Default RE: GP PT20 electric motor mounting....

Which motor did he buy?
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Old 03-27-2013, 04:59 PM
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Default RE: GP PT20 electric motor mounting....


ORIGINAL: Fastsky

Hi, I haven't been able to find a prop adapter that bolts onto the rotating can. The mount at Tower Hobbies is for a much smaller motor. I do like the idea of using the nylon spacers and will check to see what is available. Thankx for the responses!
Tower sells a large range of motor mount sizes.

http://www3.towerhobbies.com/cgi-bin...ount&search=Go pick one.

They also sell bolt-on prop adapters.

http://www3.towerhobbies.com/cgi-bin...ters&search=Go pick one.



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Old 03-27-2013, 06:59 PM
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Default RE: GP PT20 electric motor mounting....

You can use stand offs too. That is how I mount mine.

Buzz.
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Old 04-01-2013, 05:27 AM
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Default RE: GP PT20 electric motor mounting....

Hi all, he bought a Turnigy 4250 1000KV motor from Hobby King. Thank you for the responses. I now see how the prop adapters work from running the prop from the back end of the motor. I didn't know these existed. It gives us more options. Great pictures blvdbuzzard! Will think about both options.
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