GliderIreland - Ireland RC Forum - Flying Model forum in Ireland

Planes => Electrics => Topic started by: DennisZ on May 02, 2013, 19:00:19 PM

Title: new arrival - skypup 1976
Post by: DennisZ on May 02, 2013, 19:00:19 PM
(http://www.leinster-model-flyer.org/wordpress/wp-content/uploads/2013/05/wpid-DSC02069.jpg)
(http://www.leinster-model-flyer.org/wordpress/wp-content/uploads/2013/05/wpid-DSC02065.jpg)
(http://www.leinster-model-flyer.org/wordpress/wp-content/uploads/2013/05/wpid-DSC02060.jpg)
Title: new arrival - skypup 1976
Post by: Happy Days on May 02, 2013, 19:35:31 PM
Hi there Dennis, :D  long time no speak (or see.)

So what’s the story behind this Skypup? :?:

Keith
Title: new arrival - skypup 1976
Post by: DennisZ on May 02, 2013, 21:15:22 PM
I got it as a kit
(http://www.leinster-model-flyer.org/wordpress/wp-content/uploads/2012/06/pup1.jpeg)
Took some 18 months to complete
(http://www.leinster-model-flyer.org/wordpress/wp-content/uploads/2013/03/20130303-185414.jpg)

Flew couple weeks ago at phoenix park. Just barely made it - only able to stay afloat at full throttle.

Upgraded now to 4 cell and 3 blade setup - should give twice as much power (in theory). Have not tried again yet.
Title: new arrival - skypup 1976
Post by: Happy Days on May 02, 2013, 21:53:04 PM
Good man Dennis! I wondered what you’d been up to this past year or so. Going into powered flight er?
 :D

It looks a sweet little model. With the flat bottomed wing and loads of dihedral it should be a very stable four channel flyer.
 8)

The extra celled battery should add quite a few extra rpms. (provided the motor and esc can take it of course.)It looks like that is about a 1200Kv motor, so an extra 3,7volts would add a theoretical 4400rpm.

 I’m sure I heard somewhere that three bladed props on model aircraft are less efficient than two bladed ones. Just a suggestion Dennis, but if you have a power meter you might like to try and see if the three bladed prop produces more thrust than the two bladed one before you try and send it up. (Just a thought)

By the way,….have you got pilot for it yet? :P

Keith
Title: new arrival - skypup 1976
Post by: DennisZ on May 02, 2013, 23:38:41 PM
The motor is actually 900kv, used to swing 12x8 prop.

I am next to phoenix park four times a week these days, including Sat/Sundays ( kid doing rowing). So ... going electric is almost the only option.