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Very Hot Topic (More than 25 Replies) guillows avenger and p51 build and fly. (Read 6548 times)
Rekitus Maximus
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Re: guillows avenger and p51 build and fly.
Reply #55 - May 7th, 2021 at 9:22pm
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Hi kittyfritters,
I've been thinking about your recent post.

I am rather likely to fly the Avenger again, along with all that follows. 

Going on to other planes is mostly the desire to defend a souvenir.
This is the first time I have taken a stick n tissue n rubber free flight plane out for test flights
and not had it in some way damaged.

Where I can't see this plane leading me is to the next level of learning
I won't be able to see it.

The fact is I know I could build a better plane from the start.
... enh, I could have built a less difficult model to fly.

mostly lighter and a little ... more effort into straight rudder and elevator.

what I see next for me to learn is indeed both more careful adjustments
and learning to see those results.  It is not a floaty glider.
I do not have much time to see If I made a good adjustment.

so I am going to build more planes... real soon now...
and learn on them.

and perhaps the way rubber motors and props work.

braiding, spools, bearing blocks with thrust adjustments
lubes and propeller carving...
at some point I'll need a motor winder.

I agree there is more here with the Avenger.
I think I'll need other airframes to show me the lessons.

I am hoping I can find a camera operator
a short video can be very entertaining

cheers.


  

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toulouse
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Re: guillows avenger and p51 build and fly.
Reply #54 - May 4th, 2021 at 10:11pm
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I have enjoyed reading your posts on the Avenger.
Memories. 
The RNZAF flew them in the Pacific in WW2.
There was one in RNZAF colours on gate display at RNZAF base Te Rapa near Hamilton NZ. 
My high school First XV Rugby team played an annual game with the RNZAF base team.
  
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Kittyfritters
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Re: guillows avenger and p51 build and fly.
Reply #53 - May 4th, 2021 at 5:05pm
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Rekitus Maximus wrote on May 4th, 2021 at 1:56pm:
ooops...
I forgot to thanks to all of you who have helped me by
pushing the various solutions at me to give a try.

I had always thought there may have been a few little
items I needed to learn to get these guillows planes to go...
well it is a whole lot of important things to learn.

do not kid yourselves, there are a whole pile of items to know
to get a stick n tissue rubber free flight plane
to go up and come back in one piece.
... completely ignoring the appearance of my airplane...
Yet another book of learning to do.

the next one will be better.




Play with it a bit more.  Built straight and trimmed with the right amount of rubber the 500 series Avenger is capable of 55-65 second flights.  You've learned a lot but there is more to learn from it. 

I know that I'm guilty of ignoring this myself (embarrassingly so at the last contest I was in) but keeping notes on each flight, the amount of rubber, trim adjustments, number of winds, etc.,etc., doing only one change at a time and carefully noting the results will teach you a lot about a model.  Learning to trim carefully and methodically is tedious but will take you from just getting it to fly to spectacular flights.  I could give you some "rules of thumb" to start with on any rubber powered model but those would only be the ones that I use and would start a discussion that would occupy an entire thread by itself.

Keep 'Em Flying!

KF
  

Qua sublata omnia praecepta legis
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Rekitus Maximus
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Re: guillows avenger and p51 build and fly.
Reply #52 - May 4th, 2021 at 1:56pm
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ooops...
I forgot to thanks to all of you who have helped me by
pushing the various solutions at me to give a try.

I had always thought there may have been a few little
items I needed to learn to get these guillows planes to go...
well it is a whole lot of important things to learn.

do not kid yourselves, there are a whole pile of items to know
to get a stick n tissue rubber free flight plane
to go up and come back in one piece.
... completely ignoring the appearance of my airplane...
Yet another book of learning to do.

the next one will be better.


  

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Rekitus Maximus
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Re: guillows avenger and p51 build and fly.
Reply #51 - May 4th, 2021 at 1:43pm
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as today is quiet air.
I put the avenger on wing.

this round of flights was reasonably consistent.
going up and right turn  with a wider right curve on decent.
motor is two loops 1/16 about an inch longer than the peg to nose.
my count was 150 turns.

plane climbed turning right and looking close to stalling.
as the power let down the nose dropped a little with a tiny right turn
and it went level a bit and then went into free wheel
did a much wider right turn... I'd call it almost straight.
and slid down on a steeper glide than I thought it should

I am guessing here... I think the rubber power and glide times were equal
I think about 15 to twenty seconds for the flights.

for me these flights today are a high water mark.
and close to my goals for the plane.

I'd like longer runs with the rubber.
I can go up in power... but then I suspect the plane would have to
go up pretty steep which seems full of potential horrors.

I am reasonably sure better gliding is a build a lighter bird,
as opposed to balance or other flying surface changes.

plane pictured is post flying.
I think this is the first time I have brought one home that didn't need
adjustment or repair.

rekitus not today.

  

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Rekitus Maximus
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Re: guillows avenger and p51 build and fly.
Reply #50 - Apr 29th, 2021 at 5:09pm
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after today's adventures I am beginning to like
what  magnets could provide.

avenger first I guess...
I made the nose block a bit deeper and that helped
I put a smear of plasticine on two sides of the block
and all problems with that prop popping off went away.

this airplane is just odd. 
launching it does make a difference in what it does.
I do not understand... things it does.
It will occillate.  Bank a little left and then a little right
but If it right banks at about 30 40 degrees
it will lock into that and pickup speed.... ending with a cartwheel.

I took some of the washout off the right wing...
that helped  and I have not had it bank as steep since.

It is otherwise not a consistent flyer.  Wide right turns or straight...
transitions to glides that are steep or good.

plus the usual issues...
I was winding and looked at the motor.
hmmm why is that loop loose?  as I started to let the prop loose
it went bip! into the fuselage...  see picture ...
as best I could take of the little knot at the back peg.

home again...  today is the kind of day you can't have too many planes
I have one in training and it is bucking.

second photo is the p51 I truly can't decide
new kit or fix this one...  If I can get the canopy off
I may re-build. 
Any standard ways to remove?




  

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Rekitus Maximus
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Re: guillows avenger and p51 build and fly.
Reply #49 - Apr 28th, 2021 at 6:50pm
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a magnet...  I have some... somewhere.

that idea may take me a bit to find parts and install.
I like it

thanks kittyfritters
  

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Kittyfritters
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Re: guillows avenger and p51 build and fly.
Reply #48 - Apr 28th, 2021 at 6:36pm
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"I have never had a plane kick off buttons or bearings or propellers like this one does."

On a scale model use rare earth magnets to hold the nose block on and keep the thrust line adjustments true.  The little 1/8" diameter magnets are strong enough even when you only use the magnet on one side and a piece of steel shim stock (cat food can lid) on the other side.  (Illustration is from a somewhat larger model and not one of mine but you get the idea.)

On a non-scale model just loop a rubber band over some convenient part on the nose and over the nose block.
  

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Rekitus Maximus
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Re: guillows avenger and p51 build and fly.
Reply #47 - Apr 28th, 2021 at 5:14pm
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I got the avenger out today and there was a mild and even wind
I'll skip the breeze be breeze account...
my new nose block in place and up it goes.
fairly straight into the wind and up about 20 feet

I could tell the power was tapering off as the plane leveled
and ... sprong! off comes the propeller/nose block

no real harm done from that event

I have never had a plane kick off buttons or bearings or propellers like this one does.
I had a stick strato streak that tossed the rubber off the front of the motor
on the odd occasion...

motor is a double loop of 1/16 rubber that pokes out about 2 inches from the cowl

I have to add that was a good looking flight.
I thought I knew something... for about 5 seconds of motor run.

I am going to add some thickness to the nose block.
that is about all I can come up for a solution.
  

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Rekitus Maximus
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Re: guillows avenger and p51 build and fly.
Reply #46 - Apr 27th, 2021 at 9:42pm
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and I have made a noseblock.
to go onto the prop bearing.
I'll be sorting out how to adjust thrust

or making another nose block.

  

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Rekitus Maximus
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Re: guillows avenger and p51 build and fly.
Reply #45 - Apr 27th, 2021 at 1:48pm
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ok... that can work!

I may be ordering tiny screws to get that Idea to go.
and brass sheet... 
though I suspect I'd use plywood  If I can't find
something...

thanks.



  

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Re: guillows avenger and p51 build and fly.
Reply #44 - Apr 27th, 2021 at 1:23pm
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Just posted a noseblock by ZK-AUD on HPA who explained how the adjustable nose block is made: Click Here
Might be helpful in trimming your birds.
  

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Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Rekitus Maximus
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Re: guillows avenger and p51 build and fly.
Reply #43 - Apr 27th, 2021 at 10:15am
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After a while of being busy in many things not stick and tissue...

I am back to having evenings to do a little building.

I have been sorting out the avenger...
It glides fairly well in a wide left curve.
and under light test power it goes about any way it wants
seems dependent on how I toss it.
the prop block pops out every time at the end of rubber power
so... I am at making a proper nose block to hold the
propeller on the airframe.

I keep looking at the p51 parts...
I can reuse the rudder.  buuuuut I think a new
stack of parts may be in order...
a big baggie of parts in acetone may get me some formers
or templates.

onward

I live up to the name Rekitus.




  

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Re: guillows avenger and p51 build and fly.
Reply #42 - Aug 13th, 2020 at 10:24pm
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I am sorry to hear of your vehicular mishap. But there is a bright side to it. You don't have a big pileup of built planes taking up space with the wife complaining about the clutter, so you are free to get another project up and going. Happy flying.
ian
  
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Rekitus Maximus
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Re: guillows avenger and p51 build and fly.
Reply #41 - Aug 13th, 2020 at 8:27pm
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After a while of being busy in many things not stick and tissue...
I flew the p51 in this thread...
it went up and turned right under power
and then made a bee line for the road.
car arrived just as the plane hit pavement

I doubt the driver even saw the airplane.

I expect I'll build another soon.

I have to find a better field... something with less road nearby.

in my flights, I am coming to the conclusion that prop bearings and bearing block to airframes are important.
the flights are far more consistent.



  

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