BEAVER DH C2 no 2 30 IN RUBBER DUMAS KIT 306 Nov 25 2025 to PRESENT

[Lastwoodsman]

BEAVER DH C2  30 INCH RUBBER POWERED  FREE FLIGHT PARK FLYER  DUMAS KIT 306

Reply #225            Thur April 16 2026

    Here are  four outside pics of the repaired Beaver,  ready to fly.    I will still check the balance,  and ....  put the Beaver in the table stooge,  and check some rubber motor and prop runs,  just to be sure ....

Pic #1    2477    Downthrust is good.

Pic #2    2478    Side thrust is good.

Pic #3    2479    Wrinkles from high humidity,  from a lot of rain.

Pic #4    2481    Underside view.

    Possible forecast flying days are:  Fri April 17 2026  all day,  Mon April 20  all day,  Thur April 23  all day,  and Fri April 24  first thing in the morning.

     The park is in full leaf flush,  and we had a lot of rain,  and the grass is growing,  and has not been cut yet !!    These are the best days     for small park flying,  if the humidity     cooperates .... 

Lastwoodsman
Richard

[Lastwoodsman]

BEAVER DH C2   30 INCH RUBBER POWERED  FREE FLIGHT PARK FLYER   DUMAS KIT 306

Reply #226             Thur April 16 2026

In the Table Stooge

     I did three motor test runs using a fresh seven inch four strand motor -  two strands  3/32" and two strands of  3/16"  rubber.

1    200 stretch winds  =  8 sec
2    200 stretch winds  =   8 sec
3    250 stretch winds  =   12 sec

     I can safely stretch wind in 270 turns with this motor.    This should work as I am only trying for  ten second circular flights in the  110 yard by 130 yard Cricket Field in Jackson Park,  Windsor,  Ontario.

Pic #1     2475     Undertail lighting.

Pic #2     2485     Side thrust

Pic #3     2487     Down thrust

Pic #4     2494     Prop Spinning

  Here is my theory of flight,   'guess',   as to why the plane goes left.   The left wing sits higher than the right wing  (at ninety degrees to the relative wind),  causing the left wing to have less lift than the flatter right wing.   Therefor,  the higher lift right wing flies higher in the air,  than the left wing,  causing the plane to go left.    Yes, no ?

Lastwoodsman
Richard

[Lastwoodsman]

BEAVER DH C2   30 INCH RUBBER POWERED  FREE FLIGHT PARK FLYER   DUMAS KIT 306

Reply #227             Thur April 16 2026

In the Table Stooge   Test Run of Rubber Motors

Pic #1     2482     Beaver is in the Stooge for some test runs of the rubber motors.

Pic #2     2490     My  10:1  Stretch Winder

Pic #3     2492     There are 250 stretch winds on this motor.    Max safe winds is  270.

Pic #4     2494     Wind forecast for Fri April 17 2026   
The best times are  8 AM sunrise to  2 PM.

Lastwoodsman
Richard

[Lastwoodsman]

BEAVER DH C2   30 INCH RUBBER POWERED  FREE FLIGHT PARK FLYER   DUMAS KIT 306

Reply #228             Thur April 16 2026

Balancing the  30"  Beaver between the balance jars.

Pic #1     2499     The Beaver balances with an extra ball of clay weight on the nose,  of about one gram or so.

Pic #2     2501     Closeup of the clay weight.
   
Pic #3     2503     Straight on view of the wings and tail plane.

Pic #4     2508      The Beaver stops in for a visit to the balsa wood lumber supplies board,  and the rubber motor board.     She looks over the rubber selection.   She is getting pumped up for those big,  long rubber motors,  and the delirium of flight.

Ready to fly!   It really does want to fly!

Lastwoodsman
Richard