That's strange Martin re the incidences. I don't know of any models built so far that needed any modifications from the plan.
Maybe the increased wing area etc has caused this. On mine the balance point is as per plan , no mods to anything and it fly's well. The only trimming needed was a touch of extra down on the motor to stop it zooming on power. I've retrospectively added a further 25% rudder area to help when flying from a small field with a lot of trees but it was perfectly controllable as designed.
Shaun.
7th Ponty Fly In - Mystery Model
- Shaun
- Posts: 1075
- Joined: 15 Feb 2018, 21:49
- Location: West Yorkshire
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- Posts: 16
- Joined: 17 Feb 2018, 10:16
Re: 7th Ponty Fly In - Mystery Model
Shaun, where did you get the DAL props from? Can't seem to find the one your using anywhere!
I get the impression that all of you are testing your motor, esc, prop combinations with a watt meter. Having never built an electric model before this is new to me. Are you just using a basic in line watt meter for this?
- tiptipflyer
- Posts: 396
- Joined: 16 Feb 2018, 22:49
- Location: Germany
Re: 7th Ponty Fly In - Mystery Model
My Pulstar is ready to go. It´s built according to plan, just the rudder is 5mm deeper. The fuselage is very narrow, inside width is 12mm only, just enough for a 2s500 lipo and a 5g servo.
The AUW is 163g, which is not bad.
Using a 3x4.1 4-blade prop, current draw is 3A on 2s which is about 24W. That should be plenty to fly o.k.
Maiden flight will be next monday. If it´s a good flyer, I will build a second, wider fuselage to accomodate the new GG equipment, Martin just developed. This will be powered by a Cox TeeDee 010. Frank
The AUW is 163g, which is not bad.
Using a 3x4.1 4-blade prop, current draw is 3A on 2s which is about 24W. That should be plenty to fly o.k.
Maiden flight will be next monday. If it´s a good flyer, I will build a second, wider fuselage to accomodate the new GG equipment, Martin just developed. This will be powered by a Cox TeeDee 010. Frank
- Shaun
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- Location: West Yorkshire
Re: 7th Ponty Fly In - Mystery Model
As always Frank, a cracking model beautifully finished...
Cheers,
Shaun
Cheers,
Shaun
- Shaun
- Posts: 1075
- Joined: 15 Feb 2018, 21:49
- Location: West Yorkshire
Re: 7th Ponty Fly In - Mystery Model
[/quote]
Shaun, where did you get the DAL props from? Can't seem to find the one your using anywhere!
I get the impression that all of you are testing your motor, esc, prop combinations with a watt meter. Having never built an electric model before this is new to me. Are you just using a basic in line watt meter for this?
[/quote]
I use an ancient Astro Flight Watt Meter I bought over 20 years ago... They are much cheaper today.
Have a look on Banggood ,
www.banggood.com/G_T_Power-150A-High-Pr ... rehouse=CN
And this one
www.banggood.com/G_T_Power-30A-Lipo-Bat ... rehouse=CN
Just search for DAL Quad props and loads of sellers will come up.
Cheers
Shaun
Shaun, where did you get the DAL props from? Can't seem to find the one your using anywhere!
I get the impression that all of you are testing your motor, esc, prop combinations with a watt meter. Having never built an electric model before this is new to me. Are you just using a basic in line watt meter for this?
[/quote]
I use an ancient Astro Flight Watt Meter I bought over 20 years ago... They are much cheaper today.
Have a look on Banggood ,
www.banggood.com/G_T_Power-150A-High-Pr ... rehouse=CN
And this one
www.banggood.com/G_T_Power-30A-Lipo-Bat ... rehouse=CN
Just search for DAL Quad props and loads of sellers will come up.
Cheers
Shaun
Last edited by Shaun on 26 May 2018, 18:43, edited 1 time in total.
-
- Posts: 748
- Joined: 16 Feb 2018, 14:11
- Location: Warwickshire
Re: 7th Ponty Fly In - Mystery Model
Very nice Frank! I always like the black 'anti glare' colour in front of the cockpit - it was standard on things like the de Havilland Chipmunk so that pilots wouldn't be dazzled by the sun reflecting off a shiny motor cowling.
- Carl
- Posts: 267
- Joined: 16 Feb 2018, 13:26
- Location: Way down in the South West
- Contact:
Re: 7th Ponty Fly In - Mystery Model
Another nice looking Pulstar Frank. It's been nice to see all the individual finishes on the Pulstars completed so far.
Carl
Carl
Carl
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STILL LEARNING
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STILL LEARNING
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- Posts: 91
- Joined: 16 Feb 2018, 19:45
Re: 7th Ponty Fly In - Mystery Model
Frank
That is a very nice colour scheme.
That is a very nice colour scheme.
- _AL_
- Posts: 163
- Joined: 17 Feb 2018, 01:09
- Location: Sydney Australia
Re: 7th Ponty Fly In - Mystery Model
That looks outstanding Frank.
Mine had it's maiden this morning.
It was stalling badly initially. I tried to fix unsuccessfully with CG changes so I went back to original CG & shimmed the back of the elevator which was much better.
I managed 2 pretty nice flights in the end. It's still not perfect but well flyable & controllable. It'll be even better with a bit more tweaking. The main thing is a bit more right thrust. Great choice of model guys.
Finished the day with a couple of nice flights of the Chatterbox with the Kraft 71.
Top day.
Video to follow later tonight.
Al
Mine had it's maiden this morning.
It was stalling badly initially. I tried to fix unsuccessfully with CG changes so I went back to original CG & shimmed the back of the elevator which was much better.
I managed 2 pretty nice flights in the end. It's still not perfect but well flyable & controllable. It'll be even better with a bit more tweaking. The main thing is a bit more right thrust. Great choice of model guys.
Finished the day with a couple of nice flights of the Chatterbox with the Kraft 71.
Top day.
Video to follow later tonight.
Al
- _AL_
- Posts: 163
- Joined: 17 Feb 2018, 01:09
- Location: Sydney Australia