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Motorized 1/72 HH-53C

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  • Member since
    December 2002
Motorized 1/72 HH-53C
Posted by lenroberto on Friday, March 28, 2008 8:51 PM

My latest fun build- an old Airfix HH53C Jolly Green Giant- with two motors spinning both rotors! It was a challenge but I managed it...

Not the best pic- hard to get the camera to show the motion of the rotors:

now if I could just make it sound like a 53...

Len

  • Member since
    March 2003
  • From: USA
Posted by DAVEY5 on Friday, March 28, 2008 9:10 PM

                      Very cool, looks great..  do you have the motors hooked up to a train set transformer. If the small motors can handle the volts you can start that sucker real slow looking real as hec. I did that with the old revell 53-D many years ago.The 1/72 must of been tuff to get the motors in. It looks real good..... The best ....Great work...

                                            Davey5

To fly is great To hover is divine ...........
  • Member since
    December 2002
Posted by lenroberto on Friday, March 28, 2008 9:20 PM

Thanks Davey- 

No transformer-  I need to learn more about electronics....I use 1 AA battery and a switch-  the main rotor turns slower than the pic shows- looks pretty good though it has a little wobble I could not eliminate.  The mini tail motor is actually the housing-  I could not get it to fit in the plastic housing but it was the same size so the motor is the housing-  with putty to form the contour and make it look a little better.

Every project a learning experience...

-Len

  • Member since
    July 2006
Posted by Scotty T on Friday, March 28, 2008 9:32 PM

that is awesome!!!!  wish it did sound like a -53.  At least you dont have to worry about main rotor track and balance, pcr adjustments and the like.  I want to do that to one of the MH's i have.

cheers

scotty t

  • Member since
    March 2003
  • From: USA
Posted by DAVEY5 on Friday, March 28, 2008 9:55 PM

               You are welcome... keep up the great work...  A low voltage reostat would give you from 0 voltage out to what ever battery voltage you have hooked up. Then you set the rotor speed like adjusting a light dimmer. 0 - 1.5 volts.  Still looks cool the way you have it now.

    Yes no bad wobble is amazing...

                               The best D5

To fly is great To hover is divine ...........
  • Member since
    August 2006
  • From: University of Dayton
Posted by arkhunter2002 on Saturday, March 29, 2008 12:32 AM

That's awesome.  I should try and attempt something like that.  I have an old cell phone that would make a perfect donor...

Did you use any tips/drawings/diagrams?

 

Take care,

Austin 

  • Member since
    December 2002
Posted by lenroberto on Saturday, March 29, 2008 6:13 AM

Hi Austin-

This site has some cool tips and is also very inspiring:

www.dynamicscalemodeling.com

-Len

  • Member since
    March 2003
  • From: Lafayette, LA
Posted by Melgyver on Saturday, March 29, 2008 6:56 AM

Len,

Where did you find such a small electric motor for the Tail rotor?  From the web site you mentioned?  You HH-53C looks great!

Clear Left!

Mel

  • Member since
    December 2002
Posted by lenroberto on Saturday, March 29, 2008 7:45 AM

Hi Mel-

The tail uses a mini cell-phone/ pager motor-  they are very tiny!  You can find them lots of places on the web-  one to try is: 

www.allelectronics.com

They offer many different types of motors, switches, and all the material you need.

try to find one without the weight on the end-  they are very easy to mangle trying to get those off.  I found another web store but the link escapes me at the moment.

-Len

 

 

  • Member since
    December 2004
Posted by stan2004 on Saturday, March 29, 2008 12:14 PM
 lenroberto wrote:

..Not the best pic- hard to get the camera to show the motion of the rotors:

Very cool indeed!  Try taking a shot outside on a bright day or with lots of inside lighting to decrease the camera's auto-aperture time (or manually decrease shutter time if camera allows that).  I suppose with a helping hand you could take it just after applying or removing power when the rotor isn't at full speed.  Going the other way, if your camera has flash, perhaps try a dark room in which case the flash interval might be short enough get the desired effect.

At first glance I didn't see the blades at all and briefly thought of that prop-plane technique of not installing props at all to simulate spinning on in-flight models! 

  • Member since
    July 2003
  • From: Cincinnati, Ohio
Posted by ridleusmc on Saturday, March 29, 2008 3:57 PM

That's just super cool.  I've been thinking about motorizing rotors and propellers, but I haven't worked up the nerve.  Great Job.  And that camo looks great.

Semper Fi,

Chris

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