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Author Topic: Frogflight Piper Pacer (16") needs trimming and motor suggestions  (Read 2277 times)
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LASTWOODSMAN
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REAL PLANES HAD ROUND ENGINES AND TWO WINGS



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« Reply #25 on: May 05, 2018, 09:33:11 AM »

Nice videos Free !!   And a great winding stooge.    Shocked Cool    They are the greatest things ever invented for Free Flight - the fastest way to get your miniature aircraft back in the air!
Keep 'em flying!

LASTWOODSMAN
Richard
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OH, I HAVE SLIPPED THE SURLY BONDS OF EARTH ... UP, UP THE LONG DELIRIOUS BURNING BLUE ... SUNWARD I'VE CLIMBED AND JOINED THE TUMBLING MIRTH OF SUN-SPLIT CLOUDS ...
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« Reply #26 on: May 25, 2018, 08:40:33 AM »

Hello gentleman,

sorry for my long absence.

I dind't really make much progress, the change in rubber made a huge difference and is the way to go but the aircraft kept spiraling in to the right.
So I fitted a tab to the rudder (left)  and it seems to even out the spiraling.
When I tested this I broke the motor on the second wind 1000 turns on .155 diameter rubber 12" loop.
I didnt have a spare motor with me and since then the weather hasn't been coöperative.
Untill today, at lunch I went out and tried a new motor, same specks as before but well lubed.

I only did two flights, 700 turns and 800 turns before I had to return to work, somebody has to pay the bills.

First flight 700 turns did well +- 30 sec flight ROG, she still has a tendency to spirall but I think my frozen propellor saved the day.

https://youtu.be/R4DCW39SttY

Second flight 800 turns, while I was filming I did a bad release, but with the rest of the turns she did a nice slow flight untill she hit the only pole in the field.
I like the little touch and go in the beginning. Sorry for the absence of the subject in the majority of the footage but it gives an idea.

https://youtu.be/4XhSp5y5ze4

So, can I put in even more left rudder to completly eradicate the spiraling or will that only bring more trouble?
I'll try to put a picture of the tab this evening.

Until then
grtz free

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spliffsecond
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« Reply #27 on: May 25, 2018, 10:58:39 AM »

The rudder tab, can I make this bigger or different to completly cure the right spiraling?

grtz
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Re: Frogflight Piper Pacer (16") needs trimming and motor suggestions
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Jack Plane
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« Reply #28 on: May 26, 2018, 02:32:07 PM »

Not sure that - without being there - I can help much more with the overall balance of trimming.

But I'd suggest that you replace your rudder trim-tail with a trim-tab, i.e. a tab that is say 8mm wide and 20mm high, which would have a more even effect across the rudder, whereas your current tab is more of a streamer producing turbulence...?
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Andrew Darby
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« Reply #29 on: May 26, 2018, 04:04:03 PM »

I agree, a longer tab would be good...

Andrew
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spliffsecond
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« Reply #30 on: May 26, 2018, 04:49:06 PM »

Quote
ot sure that - without being there - I can help much more with the overall balance of trimming.

Now is not the time to come over to the UK but I may be in the Devon area first weeks of July.

“Have planes will travel”   Wink

In the mean time I went out two times today, no footage.
After a launch in to much wind, she came down hard on her tail and
the rudder broke right on the hinge line,
so taking advantage of that accident I removed the tabs and
was able to put the slightest of left in the rudder.
But on further inspection I also found a crack in the right leading edge and
Coming home to do repairs I also managed to break the left stab in half.
After the repairs were done I went back out and now she makes wide left circles.
I had to remove some downtrust as she did not climb well.
600 turns gave me 2 nice circles at head height, she than made a rather unfortunate landing and
broke the nosemount. Easely repaired and I hope to film her tomorrow.
She is starting to loock rather beaten but
she already gave me heaps of fun and
I am starting to understand the changes happening whilst trimming.
And all that from a plane who cost me 2€ in wood and a prop.
I am a happy camper.

Also a big thank you for all the good advise and the general warm welcome,
You guy’s have a very nice community and I am greatfull that I found this place.

Happy flying

Grtz free
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Andrew Darby
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« Reply #31 on: May 26, 2018, 06:59:09 PM »

Hey Grtz,

I like your philosophy, that’s one thing I love about this hobby, a small amount of money for lots of fun!  Grin

One other thing is this forum and the people on it.

BTW Sorry to read about your SE5a...

Andrew

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Klunk
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« Reply #32 on: May 26, 2018, 07:46:32 PM »

Yes - Andrew is right. It's the most helpful bunch of modellers I have come across on a Forum, and it makes a lot of difference.

I hope you do meet up with some of these fellows - I would like to as well - however I'm just a little further away Smiley.

It seems you never stop learning - as aero modelling covers such a wide spectrum - from skills to knowledge of flight and all spread over numerous disciplines. Enjoy it. It's been my passion for longer than I would care to admit - not quite as long as Hepcat John though. Smiley

John
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spliffsecond
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« Reply #33 on: June 01, 2018, 05:26:41 AM »

I finally repaired the nose of the Piper, I am now waiting on the weather to coöperate.

grtz free
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