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 #180          Sun March 29 2026   post 5 of 5

Pic #1     2170     Now the wing is glued.

Pic #2     2171     And here is the dihedral of the high left wing.

Pic #3     2175     The wing tie down rubber bands and their aluminum tubes are added.   Wing struts are still good for fitting  (I marked them up well from where they came off).

Pic #4     2177     Now the struts are glued up.   I didn't have to change anything.

Lastwoodsman
Richard

[Lastwoodsman]

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

Reply #181          Mon March 30 2026

Pic #1    2179    Another view of the struts and how well they glued up.

Pic #2    2182    The wheels are on now and the hubcaps are glued to the axles with a dab of five min epoxy.  The model is done.    Ready to fly.

Pic #3    2183    Finished Beaver is ready to fly.

Pic #4    2185      Finished Beaver is ready to fly.

Lastwoodsman
Richard

[Lastwoodsman]

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

Reply #182          Mon March 30 2026

    Here is the last two of the finished pics.

Pic #1    2187
Pic #2    2189

    I checked out the Cricket Field in Jackson Park early yesterday Sunday March 29 2026,  and the Cricket guys are now playing on the pitch.  There are three low lying areas of grass,  in the rest of the park,  now green and growing,  but not growing fast enough yet.  That little bit of rain we just had,  left no standing water anywhere.    So we need a big deluge of rain,  and a very hot sunny day,  and the grass should take off,  anytime,  any day now.

Now it is Mon morning March 30 2026

    I have been watching the borderline weather since 7 AM.  The wind has to be max  8 mph,  and max  gusts of 12 mph ,  for me to test glide.    And the leafless trees are not blocking any wind.   

It was already too windy by  9:00 Am  (sunrise is 7:18 AM  and sunset is  7:54 PM)

Pic #3    ACTUAL WIND  914 AM  10 MPH    FROM SW    GUSTING TO  17  MPH

    So,  I will wait -  better to wait ....    I did some test glides on the bed,  which did not tell me anything other that it is nose heavy  -  I want long deep, spring grass,  outside ....  maybe later on today I will check it out -  it is supposed to get up to  70 degrees F today.

Lastwoodsman
Richard

[Lastwoodsman]

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

Reply #183          Wed April 1 2026    post 1 of 3             

    Well Mon evening on March 30 2026,  I did wander back out to the Cricket Field in Jackson park,  before dark ( without the 'temptation' of carrying the Beaver ),  and only  38%  humidity -  not 78%,  and the wind was calm.  After that little bit of rain,  there was no change in the grass,  as in the grass growing solid green everywhere just yet,  but any day now.  The leaf flush has started,  the tulips are up,  the first frogs are croaking by the rauil road tracks,  and the songbirds are migrating north ...

    Three pics of my downslope test glide area,  on the side of the large knoll,  where the replica Spitfire and Hurricane reside on their pedestals.

Pic #1    2199    I will be run-tossing the Beaver straight out from the backpack,  between the new trees.

Pic #2    2198    The Spitfire and Hurri are behind me out of sight in the pics.

Pic #3    2200    The grass looks all green in this angle,  but it is mostly green tufts of grass,  but it is ready to explode.

Pic #4    2197    Pic of the balanced Beaver after the wing rebuild.  View from right rear.

    So,  this gives me a lot of time to look at the model and think.    I think it was really going left,  so I took the balance clay weight off of the left wing,  and put it on the right wing ....

Lastwoodsman
Richard

[Lastwoodsman]

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

Reply #184          Wed April 1 2026      post 2 of 3

    After looking at the Beaver a lot,  I can see that it has a little "left" rudder off set built in.  I need to confirm that it is going left to be sure.    I have not tossed it on grass yet,  after repairing the broken wing.

      If it is going left,  then instead of dissolving and re-gluing the fin/rudder,  maybe I can counter the left turn by adding one of those one quarter moon balsa shims to the side of the nose block.  All these models seem to need right thrust anyway,  so then maybe two shims together,  would be the correct amount of right thrust,  to counter the "left"  fin/rudder.    I'm  just thinking out loud ...

Four Home Pics of the repaired and balanced Beaver

Pic #1    2191    View from right front.

Pic #2    2193    View from rear.

Pic #3    2195    Shows the offset fin/rudder.

Pic #4    2196    Straight on view from rear showing the offset rudder/fin.

Lastwoodsman
Richard

[Lastwoodsman]

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

Reply #185          Wed April 1 2026      post 3 of 3                       

     The next day,  today Tues March 30 2026,  I found myself out in the park first thing in the morning,  with the Beaver at  ~  8:30 AM.   It was calm enough for me to test glide,  but I waited for more grass.   A big  one half inch of rain was forecast for later in the day,  and it was pleasantly warm,  so I walked the further eight blocks East with the Beaver to my favorite restaurant,  where the Breakfast rush had just finished.  The the owner was sitting there,  so I got to show him the newest plane,   and get a good plate of fries and gravy.    Plus I got a few more posterity pics,  before offering up,  as a live flying sacrifice,  to the most merciful Gods of Free Fight,  my rebuilt 30 inch Beaver.

Posterity Pics of the repaired Beaver -   these turned out better - the restaurant was empty right after the morning rush ...

Pic #1     2201
Pic #2     2202
Pic #3     2203
Pic #4     2204

Lastwoodsman
Richard

[Lastwoodsman]

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

Reply #186          Wed April 1 2026 

Last four posterity pics   

    These pics have the wing tie-down elastics with their aluminum tubes,  and the landing gear fairings tie-down elastics with their aluminum tubes,    and no spinner on the prop,  the same as the last four pics in the last reply.   Plus I have that big glob of clay on the right wing tip.

Pic #1    2205
Pic #2    2206
Pic #3    2207
Pic #4    2209

That's all for the posterity pics.   

    Now at 9:30  AM ,  it was a good wind forecast for flying today at  4 PM to 8 PM ,  after the drizzling rain stopped and the sun was supposed to come out at 4 PM,  but now the rain is forecast to not stop?    The wind for those four hours is still only  7 mph  gusting to 12 mph,  so I'll keep watching the weather.    We do need the rain though.

Lastwoodsman
Richard

[Lastwoodsman]

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

Reply #187          Thur April 2 2026        post 2 of 2

Watching the weather.

2:40 PM    The wind has died down,  and the rain has stopped.    But it says  100%  humidity.  I desperately wanted to go test gliding,  as the ground is soft from the light rain we had.    So I took the Beaver out onto the balcony porch,  and in less that a minute it seemed,  it started wrinkling and sagging up,  big time,  from the moisture. 

Pic #1    2216    Wrinkled tissue from 100% humidity.

Pic #2    WIND FORECAST  THUR APRIL 2 2026

    So,  I will wait for another day,  if this humidity does not decrease before sunset at  8:00 PM.  The wind is blowing at 7 mph gusting to 11 mph  from now 3 PM until sunset  8:00 PM,  maybe I will take a quick walk out there and see how the wind looks on the flags,  without the Beaver ...  I can always come back home and grab the Beaver and head back out.

P.S.      In my previous post,  I incorrectly called the landing gear fairings as using  "tie-down elastics with their aluminum tubes",  when I should have said  "single wrap around elastic with connecting white paper clip under the fuse",  was used for holding the landing gear fairings down.

Lastwoodsman
Richard

[OZPAF]

Bad luck - the weather is not being too helpful!

John

[Lastwoodsman]

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

Sat Apr 4 2026    Reply #189     post 1  of    4

Flight Report #3    evening of Fri Apr 3 2026

Previously:
Flight Report #1   Feb 26 2026    Five test glides,  bush wheel flies off.
Flight Report #2   Feb 27 2026    One test glide,   going left and then cartwheeled and the left wing breaks off.

     It took me one month to rebuild the wing,  and just in time for spring flying.

Flight Report #3

     Well John,  I finally got in some good practice,  with running-test glides ,  right before dark Fri Apr 3 2026.   The wind had died down and it was then  7:19 PM   64 deg F (feels like 57),  when I left the apartment ...

7 PM  winds blowing at 9 mph from NW  gust 14 mph
8 PM   winds blowing at 8 mph from WNW  gust 13 mph
and the humidity was only 56 % ,  sunset at 8:00 PM.

     So I hurried out there with the Beaver.   I had already scouted out,  earlier today,  the four best areas of growing grass in Jackson Park.

     The Beaver already has downthrust built into the nose.    Before I went out,  I put the  0.7 g  of clay on the right wing,  to counter the left turn,  and I put in two of those quarter moon-shaped balsa shims,  into the nose block  -  one on top for downthrust,  and one on the left side for right thrust,   for starters,  and then out we went ...   The balsa shims are held in place by the tight prop motor under constant tension.

Pic #1     2229     I have a little balsa wedge holding the nose block open  (taught rubber motor holds the nose block in tight).

Pic #2     2231     Close up.   You can see the position of the two shims on the cutting mat,  the same as the nose  block.   I also have lots of spare hubcaps.

Pic #3     2233     The shims do over lap a bit,  but do not affect anything.

Pic #4     2235     This top view shows the right thrust on the nose block.

Lastwoodsman
Richard

[Lastwoodsman]

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

Sat Apr 4 2026      Reply #190     post 2  of   4

Flight Report #3    evening of Fri Apr 3 2026

Spring walk out through Jackson park to do some test glides before dark.

Pic #1     2217     Sunset light on the Jackson Park entrance and two Dawn Redwood trees colored nicely.

Pic #2     2218     Another entrance view.

Pic #3     2219     And the wind on the slightly limping  flag at the entrance.

Pic #4     2220     We are walking up the trail now towards the flower garden.   The grass is greening up.

Lastwoodsman
Richard

[Lastwoodsman]

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

Sat Apr 4 2026       Reply #191       post 3  of   4

Flight Report #3    evening of Fri Apr 3 2026

     I started the glides just west of the Flower Garden on one of two rectangles of long deep grass beside the four Magnolia trees  -   the deepest grass since the rain yesterday,  which did fill up some standing water in the ditches on the side of the railway tracks lining Jackson Park,  and frogs were croaking.  See two mallards  pic #

     After the three good glides beside the flower garden,  we walked out further,   past the Spit and Hurri replicas and that glide toss area,  and out to the Cricket Field but they were playing Cricket  pic #   ,  so I could not use that big deep patch of grass on the West side of the Cricket Pitch sitting right beside the wind sheltering trees  -  but I had one other good spot to choose from.

Pic #1     2221     This is the two thickest patches of grass.   You can see two of the Magnolia trees getting ready to bloom.     I will be casting starting at the back pack and running towards where the plane is now,  and letting go with  10 of 15 winds or so.

Pic #2     2222     This is the deepest grass,  yet most of the park still has yellow tan dormant grass.

Pic #3     2223     Wind on the flag as we pass the Spitfire and Hurricane,  on our way to the Cricket Field.

Pic #4     2224     And there is the Cricket Field.    My good flying grass is where the player is standing on the right,  but I have one more spot for short hand glides.   In the distance is the outdoor and indoor tennis courts.

first 3 test glides:

#1   12 finger winds  goes left   landed OK

#2    20 winds  tried different launch angle more to the right    flight went slightly right with a perfect landing in the deep grass

#3     25  winds    went straight   good flight

Lastwoodsman
Richard

[Lastwoodsman]

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

Sat Apr 4 2026    Reply #192      post 4  of  4

Flight Report #3    evening of Fri Apr 3 2026

    That last green grass spot is at the far end of the park,  right along the tennis building west wall,  but the wind was blowing there like a river current, along the building,  so back we went to the Cricket field where they had just stopped,  and I did the last four test glides,  the last one with 40 finger winds on the prop.  That is only seven test glides,  but there was a lot of walking time through the park also,  with such a late start.

    Right after the sun went down the wind was really building up,  and I forced myself to quit.  It was a good feeling though,  walking out of the park with an undamaged model that lives to see another flying day.

    It is raining all day today Sat April 4 2026,  Sunday is too windy,  but Monday  is a good forecast flying day from  6:00 AM  to  10 AM.  sunrise is 7:06 AM

    This is now Sat April 4 2026,  and it is going to rain all day.  The leaf flush is ongoing but the temp really cooled off from the 70 deg F yesterday.    We are going slow with the trimming tosses,  but the results so far were quite promising,  once I got the hang of the run-toss,  straight into the wind. 

Pic #1    2225    Standing water left by the rain has a pair of Mallard ducks in it.

Pic #2    2226    Here we are back at the Cricket Field for the last 4 tosses,  as the players are done and nightfall settles in.

Last Four of Seven short Test Glides back at the Cricket Field

#4  20 winds  good flight  stops in mid air a little high.
#5  30 winds  went way left    bad angle to wind launch?
#6  30 winds    different launch angle  perfect flight going a little to the right.
#7    40 winds  slight turn right  held the flight well

Pic #3    2227      It is getting dark.  But the 30" Beaver lives to see another day.

Next flying day is in two days on Mon April 6 2026
600 AM    wind at 6 mph from  SSW  gusting to 7 mph
700AM    wind at 6 mph from  S  gusting to 7 mph
800 AM    wind at 6 mph from SSE gusting to 6 mph
900 AM    wind at 7 mph from SSW gusting to 11 mph
1000AM    wind at 9 mph from SSW gusting to 16 mph
after 1000 AM,  it is too windy to fly.

Pic #4    WIND FORECAST MON APRIL 6 2020    6 AM TO 10 AM

End of Flight Report #3

Lastwoodsman
Richard

[Lastwoodsman]

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

Mon Apr 6 2026     Reply #193

5:00 AM   

Flying day for Flight #4  Test Glides

     The weather is really cooling down, even below freezing,   so this AM April 6 2026,  is the last good chance to fly for several days.

At  7:00  AM  the temp is 38 deg F and no rain is now forecast.   By  10:00 AM the temp rises to 42 deg F.
But the humidity is  80%.   I will bring my portable fan.

Wind is good.
         winds blowing      humidity %
7 AM      3 mph  from SSE  gusting to 6 mph   82%
8 AM      3    S    6       79%
9 AM      4    SSW    7     79%
10 AM    5    WSW    9      73%
11 AM    5    W   12        65%     
NOON     8    WNW   14      58%

Pic #1     WIND FORECAST  MON  APR 6  2026   MORNING

Lastwoodsman
Richard

[Lastwoodsman]

START OF FLIGHT REPORT #4

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

Mon Apr 6 2026     Reply #194    post  1  of  5

Flight Report #4       Monday morning April 6 2026

     I got up early in the dark and saw that it had just rained and stopped,  before  6:30 AM (sunrise 7:06 AM),  and there was no wind.    See Pic #1   2245
I went back for a little power nap -  I knew I had till  10 AM for good wind,   and maybe the grass would dry out a bit,  in the meantime.   

8:59 AM   39 def F  (feels like 50 deg F)  winds 3 mph from  SSE  gusting to  7  mph.     You don't want to miss these low wind days.    I got home at  10:40 AM now 44 deg F  (58),  wind 5 mph  from WSW,  gusting to 10 mph now.

     I ended up heading out the door to the park at about 9:15 AM.    I can get to the Cricket field in 15 minutes.  It was a spectacularly  sunny morning.   These are powered flights from now on ....  these were  9,  albeit short,  good flights from  30  finger winds,  to  90  finger winds.     I got 23 pics,  but no actual flying pics yet,  with a combination of a little spring tour of Jackson park, mixed in.   I had to go back and grab the little 'personal fan'  that I forgot,  to see if it will dry the damp sagging tissue.    The fan worked but it did not dry the wing Silkspan tissue at all.

      Nevertheless,   the Beaver seemed to fly just fine,  even with the sagging wrinkles from the high humidity.   I must write an Ode to the Gods of Free Flight,  in reverance ...

     I launched these flights while not actually running,  but taking a few short steps of a fast walking shuffle,  which takes away a lot of difficulty with the finger tip direction and speed toss,  because you already have built up speed.

1   30 finger winds   perfect landing   got pic

2    45 winds   perfect slight right  soft forward flip on landing

3    60 winds    launched too high of angle    it climbed   but no damage landing on thick grass

4    60 winds     good launch perfect flight

5    75 winds     longest flight slight right

     The wind was sort of increasing and changing direction it seemed --  I forgot my flagging tape streamer  --  so I threw up a lot of grass.

6    80    tried a down wind flight   3 seconds   perfect angle of attack into the ground as the rubber ran out.

7    80     another perfect downwind  slight right flight.

     I lost the balsa right thrust shim a couple of flights ago I think .....   I had two spares,  so I put one back on.  On a couple of landing,  the nose block was dislocated,  but still pulled into the nose.

8    90     now it went straight ?   must be from an angle change into the wind at launch.

9    90     launched in the opposite direction   the wind was shifting around ,  veering and increasing,  and I got another perfect  3  second flight.    Also another perfect landing,  of a soft forward one half somersault half flip,  harmlessly onto its back.


Pic #1      WIND FORECAST MON APRIL 6 2026     6 AM TO 10 AM

Pic #2     2245     Dreary sky -  it had just rained just before  7 AM.

Pic #3     2247     The Dawn Redwood trees are full of cones -  the ground also.   No wind.

Pic #4     2248     Here we are beside the sunken flower garden,  beside one of the four Magnolia trees.   I did not fly here where I did some test glides -  the ground was low and extremely wet and full of deep wet grass.

Lastwoodsman
Richard
cont.