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Author Topic: Nose construction for RD-1E  (Read 14619 times)

Bob Hunt

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Nose construction for RD-1E
« on: February 02, 2015, 09:18:12 AM »
In preparation for Sparky's upcoming series on building the RD-1, I've gone ahead and designed an alternate nose that accepts electric motors. I decided to build one for myself, and I took photos as I went. I'm sending the drawing and the completed fuselage to Bob Kruger so that he can do an updated plan for the electric version.

I thought you all might like to see the photo sequence of the electric nose construction. I'm not going to write up a step-by-step here, as all that will be a part of the official build series. The photos presented here should give you the idea, however... I'll include about 10 photos per post until they are all up.

Later - Bob Hunt
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Offline MikeCoulombe

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Re: Nose construction for RD-1E
« Reply #1 on: February 02, 2015, 09:46:25 AM »
Very nice Bob.
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Offline Duke.Johnson

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Re: Nose construction for RD-1E
« Reply #2 on: February 02, 2015, 11:27:17 AM »
I've never put a really spinner on an electric motor, so this will sound stupid to most. The motor shaft looked flush with the fuse, is there a shaft/prop adapter behind the spinner back plate?  What brand spinners work best for electric motors?
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Offline Duke.Johnson

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Re: Nose construction for RD-1E
« Reply #3 on: February 02, 2015, 02:03:41 PM »
Thanks. That's what I thought.  I have just used the collet and spinner nut that comes with them.  Thanks again for all the work you are doing for this. I'm sure you have way more important things to do. Daniel (oldest son) and I have both built Holeshots and are fired up about building the RD-1E. #^ #^
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Offline Shawn Lenci

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Re: Nose construction for RD-1E
« Reply #4 on: February 02, 2015, 07:48:36 PM »
Bob,

Thanks for the photos in your posts!  I am stealing all your ideas for the "E" Warden Trophy Trainer I am working on. ;D  How thick are your ply doublers?  1/32" or 1/64" ply?  Will you be cutting any holes behind the spinner so cooling air will flow through the front of the motor?  Is it necessary? 

I really enjoyed chatting with you on the phone last week.  It is always a pleasurable experience and so informative.  I hope you are still loving your new Taylor GEETAR! :)  Email me some photos!

Take care my friend.

Shawn
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Offline Crist Rigotti

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Re: Nose construction for RD-1E
« Reply #5 on: February 02, 2015, 08:20:05 PM »
Now that's what a profile motor mount should look like!  I gotta go sit down.
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Offline Horby

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Re: Nose construction for RD-1E
« Reply #6 on: February 02, 2015, 09:34:20 PM »
How do you get the air to the motor?

Warren
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Offline José Almeida

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Re: Nose construction for RD-1E
« Reply #7 on: February 03, 2015, 04:20:01 AM »
Quote from: Horby on February 02, 2015, 09:34:20 PM
How do you get the air to the motor?

Warren

If is really necessary, Bob knowledge give him solutions for everything  8)

A Turbo Cool Spinner is a way to get air to the motor or something new that can surprise us  S?P

I'm follow Bob since many years and of course is a reference for me and to my buildings  :)

Thanks Bob for sharing.

José
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Offline MarcusCordeiro

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Re: Nose construction for RD-1E
« Reply #8 on: February 04, 2015, 04:00:52 PM »
Never thought of the template...
Excellent work and thanks Bob...

Marcus
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Offline Perry Rose

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Re: Nose construction for RD-1E
« Reply #9 on: April 10, 2019, 05:34:59 AM »
Thanks Bob. This puts me back to square one in my design process. That's a good thing. My first go at it would have been a bit heavy. How are you mounting the battery? I'm planning on a recess in the fuse. side. Brodak's conversion kit "D".
Dennis Adamisin has steered me in the right direction for power.I'm going to use the motor for the SV-11 ARF.
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Offline Dane Martin

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Re: Nose construction for RD-1E
« Reply #10 on: April 12, 2019, 12:43:35 PM »
Bob,
I want to imitate the majority of your design here on my profile plane. Is the actual motor mount a G10 material, or CF?
Thanks
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Offline Dennis Toth

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Re: Nose construction for RD-1E
« Reply #11 on: April 13, 2019, 06:22:44 AM »
Bob,
Nice motor installation, I think this gives a nice profile and still meets the exposed motor/engine rule that some require for profile ships.

Next question is where to put the battery and electronics? Hope you can do another pictorial on that installation.

Best,   DennisT
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Offline Dennis Toth

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Re: Nose construction for RD-1E
« Reply #12 on: April 18, 2019, 07:32:00 AM »
Bob,
Great pictures of the Cadet battery installation. A few questions: what size battery back is planned to be used? Was a tail weight box needed to get the balance correct?

Best,   DennisT
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Offline Dennis Nunes

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Re: Nose construction for RD-1E
« Reply #13 on: June 30, 2020, 02:01:47 PM »
I was going to use Bob's method on my new profile but later chose to use the Okie Model Air Products - 3D printed motor mount. This made the front end assembly really easy.

So far so good.

Dennis

« Last Edit: June 30, 2020, 04:27:05 PM by Dennis Nunes »
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Offline Gary Mondry

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Re: Nose construction for RD-1E
« Reply #14 on: May 19, 2025, 01:45:36 PM »
What happened to the rest of Bob's posts on this topic? They stop after the first ten photos now. It originally included photos to the completion of the front end of the ship.  Anybody have the rest of them?
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Offline Ken Culbertson

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Re: Nose construction for RD-1E
« Reply #15 on: May 19, 2025, 03:09:24 PM »
Quote from: Dennis Nunes on June 30, 2020, 02:01:47 PM
I was going to use Bob's method on my new profile but later chose to use the Okie Model Air Products - 3D printed motor mount. This made the front end assembly really easy.

So far so good.

Dennis

Dennis, I have used that mount on three planes.  They are fantastic but be careful.  If your motor runs really hot they will soften around the mounting inserts and elongate the hole.  Happened on two of mine, both full body version. A little JB and some new spacers worked.  Just check your alignment periodically.  When it cools on the ground it will reharden.  He may be using a more heat resistant plastic now.

Ken



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Offline Dennis Toth

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Re: Nose construction for RD-1E
« Reply #16 on: May 20, 2025, 07:22:06 AM »
Don't know how much room for the battery pack but for Ringmaster style nose HobbyStar (https://rcjuice.com/collections/softcase-batteries/products/hobbystar-1800mah-14-8v-4s-120c-lipo-battery?_pos=4&_fid=4ad29f075&_ss=c) makes a nice short pack that fits right where the tank goes.

Best,   DennisT
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Offline Brent Williams

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Re: Nose construction for RD-1E
« Reply #17 on: May 22, 2025, 05:44:07 PM »
Though the pictures have unfortunately vaporized from Stunthanger, you can still see Bob's entire profile nose build method documented in the July/August 2015 StuntNews.

https://pampacl.org/stuntnewsdownload.php?file=/wp-content/uploads/2017/08/sn_magazine_jul_aug_2015.pdf
« Last Edit: May 22, 2025, 11:41:33 PM by Brent Williams »
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Offline Gary Mondry

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Re: Nose construction for RD-1E
« Reply #18 on: May 23, 2025, 07:54:07 AM »
Thanks so much, Brent! I don’t remember seeing that in Stunt News, and I’ve been a PAMPA member forever. Just what I was searching for.

Gary
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