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Post  MauricioB on Thu Sep 05, 2019 11:28 pm

1/2A Nut wrote:Yes just bag up the parts to keep the dust off them and one day you can
revisit the project after time has passed if willing. Old Bugger

Computer Issues

My friend, I built many models from scratch, that is, from the plain, cutting wood by wood, but you need to be inspired and excited, the best thing at this moment is as you say, carefully keep these parts intact and when the enthusiasm starts from new! ... it will be time to start I'll miss my extra, a wonderful model!
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Post  MauricioB on Thu Sep 05, 2019 11:42 pm

rsv1cox wrote:I'm neither the craftsman or perfectionist that you are Mauricio but that would be red meat and a challenge for me.  I would love to restore it and fly it again.

Such a beautiful airplane gone way to early.

Bob

Thanks for valuing my work Bob, you are very kind to me.
I always make my planes, big and small, this Extra was an ARF, so just assemble and modify it to make it shine.
I will gather enthusiasm again and at some point I will begin again, the priorities of life in my country and the situation make one not have the best spirit, but they will return ... Meanwhile I enjoy my Cox! This friendship, it is very good to know that everyone is there!

I also want to let you know that I am sorry for everything that is happening in a sector of your country, for DORIAN's tornado ... I follow the news, and I hope it is well. I regret in the soul that you have to live this so hard. Hugs from here!
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Post  getback on Fri Sep 06, 2019 9:03 am

Hello Friend ,i am sorry to see this too it was a beautiful plane and look to fly well . hopefully in the future you will want to restore it But i understand the feelings after a crash that should not have been !! Doh!
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Post  MauricioB on Sat Sep 21, 2019 11:41 am

Hello dear friends, I want to enjoy my O.S. .56 Alfa, a really beautiful engine! ... so I wanted to share here, that I have recently acquired this Extra, it is a beautiful model of excellent quality ... and I will leave it there at rest while I work on the model project Stylo with Norvel .061 engine.
But I get too excited and order another model for my O.S. . 56 alpha, this is this model: http://www.greatplanes.com/airplanes/gpma1030.php
Soon I will tell you news!
For now here is my Extra:
O.S. 56 Alfa 4T RC - Page 2 20190914


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Post  1/2A Nut on Sat Sep 21, 2019 12:44 pm

So full rang RX quality no more single antenna park RX hehe Very Happy

Looks like a good one, hope you have fun with it!

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Post  MauricioB on Sat Sep 21, 2019 3:59 pm

Ohh no my friend hahaha !!!, this time I will use an RX JR with satellite !!! ... no more lost please !!! Old Bugger
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Post  getback on Sun Sep 22, 2019 8:41 am

Nice !!! Very Happy RC Plane
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Post  MauricioB on Sun Sep 22, 2019 10:47 pm

getback wrote:Nice !!! Very Happy RC Plane

Eric! How are you? Thank you!
How beautiful is your bitch !!!, how big already !! ... remind me what her name is !?
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Post  getback on Mon Sep 23, 2019 7:17 am

Hea Mauricio , Her name is Leona , just turned 1 YO . I have been fair my friend , ready for the weather to turn cooler it is still in the 90F here Sad The hot does not work for me too good . Am hoping to do some flying soon ! Going to buy a Truck today i will post about it . You look good my friend hope life is treating you with love . sunny Beer Cheers
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Post  MauricioB on Mon Nov 04, 2019 12:34 am

Well, I'm also with this project ... I've decided to put this model together for my O.S. 56 4T Alfa, I will convert it to glow ... I am manufacturing the templates and then moving on to wood and making the corresponding reinforcements!
http://www.greatplanes.com/discontinued/gpma1186.php
O.S. 56 Alfa 4T RC - Page 2 Gpma1110

Paranoid

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Post  getback on Mon Nov 04, 2019 8:05 am

Big Big Big it is Looks good so far ... Popcorn
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Post  MauricioB on Sat Nov 09, 2019 11:28 pm

Well dear friends !, I still have my heart hurt after the loss of my Stylo model, I really love these things and even more with the love that I put in my work, but but ... here I go with my Yak 55 EP of Great Plans and my heart is distracted a bit Sad Sad .... here I share with you the custom-made pieces, to fit and turn it into a GP that is from Electric Power to Glow Power ... I'm still working ...
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O.S. 56 Alfa 4T RC - Page 2 Empty Flight Video

Post  MauricioB on Tue Dec 24, 2019 1:55 am

Well folks, finally modify a model of the Great Planes firm, the Yak 55 M EP.
Here the video, I hope you enjoy it!

Please read the warning in this video:

The manufacturer is not responsible for the original modification of the product.
Modification of this product is the sole responsibility of its owner.
Do not do this if you do not have the right experience.
Do not do this if you do not have safe instructions.
Take care of your health and that of the environment.
It is YOUR responsibility to modify the original product.
Thanks for watching the video. I hope you enjoy it.


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Post  balogh on Tue Dec 24, 2019 2:46 am

Great flight and video Mauricio!
When I modified my electric Denight 50 I erroneously  reduced the engine offset angle and the plane tended to turn left after take-off. I have repaired it since then and the OS FS 56 alpha now flies it with the same authority as yours.

In the last part of your vid after landing you have run the engine full throttle for a short time and I heard as if the engine had not revved up to around 10.5k which is the peak of my engine  with a 12x6 APC prop...maybe your Master Airscrew is 13x6"?...is it not running a bit lean?. I turn the needle valve out by about 1.75 turn to make sure the fuel-air mixture is not lean.

Do you have some castor in the fuel? I run mine with the same 20% castor fuel as my COX engines...the  OS has a much higher compression ratio than the COX and burns it at so high temp that the exhaust gases bring a lot of black castor soot in it. Also, the valves get stuck in castor goo if the engine sits long without running..but I still prefer castor to synt..

Happy flying friend! RC Plane
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Post  getback on Tue Dec 24, 2019 6:59 am

Nice !! she was at your command very smooth and looks good too !! Hope things are well with you and Merry Christmas my Friend !! Christmas Tree
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Post  MauricioB on Tue Dec 24, 2019 10:02 am

balogh wrote:Great flight and video Mauricio!
When I modified my electric Denight 50 I erroneously  reduced the engine offset angle and the plane tended to turn left after take-off. I have repaired it since then and the OS FS 56 alpha now flies it with the same authority as yours.

In the last part of your vid after landing you have run the engine full throttle for a short time and I heard as if the engine had not revved up to around 10.5k which is the peak of my engine  with a 12x6 APC prop...maybe your Master Airscrew is 13x6"?...is it not running a bit lean?. I turn the needle valve out by about 1.75 turn to make sure the fuel-air mixture is not lean.

Do you have some castor in the fuel? I run mine with the same 20% castor fuel as my COX engines...the  OS has a much higher compression ratio than the COX and burns it at so high temp that the exhaust gases bring a lot of black castor soot in it. Also, the valves get stuck in castor goo if the engine sits long without running..but I still prefer castor to synt..

Happy flying friend! RC Plane

Thank you very much András, I'm glad to know that you like how the model flies!
Yes !, you have to take time to measure and calvulate the F1 or parallamas, something that the engine is properly at the right angles for linear flight without trends.
I have manufactured the fitting pieces carefully, in order to minimize any deviation!

Regarding the engine, I have placed there in the video a 12x6 inch Master propeller, I am using 10% nitro Byron fuel, in its composition it has Synthetic and Ricin.
I still cannot find the exact point of optimal engine operation, it has a certain irregularity during the flight, I am assuming two things, the engine is very new and I must also adjust the needles as I get to know it.
The level of the fuel tank with respect to the carburetor has been slightly above, so I must check if that really affects it or it is simply a needle adjustment as I recently commented. I will continue with the progress and flights and keep you informed .... thanks again dear friend!
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Post  MauricioB on Tue Dec 24, 2019 10:12 am

getback wrote:Nice !! she was at your command very smooth and looks good too !! Hope things are well with you and Merry Christmas my Friend !!  Christmas Tree

Thank you dear Eric, I always remember YOU FRIEND! .... I wish you beautiful Christmas ... a big hug!
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Post  MauricioB on Thu Dec 26, 2019 6:37 am

Okay, I made the rpm measurement with these two blades:
Master 12 x 6: High 9500 rpm - Low: 2300/2400 rpm
Master 13 x 6 S-2: High 10050 - Low: 2300/2400 rpm
then, I deduce that, due to the shape of the blade, it is much easier for the engine to move the 13 x 6 and as for the acceleration, it logically accelerates faster from low to high than with the 12 x 6 propeller.
Old Bugger Keep in mind then that there is no report error, I repeat, what is making the 12 x 6, have less reaction and less rpm than the 13 x 6, is undoubtedly the shape of the shovel.
I should measure, what drag power in kilos the engine can give with one or another propeller, but here it started to rain, so I leave it for another time .... Popcorn
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Post  getback on Thu Dec 26, 2019 7:07 am

That don't make a lot of sense other than the fact it is a four stroke and likes tourk that manual states either can bee used but depends on application . https://www.manualslib.com/manual/645578/O-S-Engine-Fs-56a.html?page=6#manual And the props weight and spec,s https://www.masterairscrew.com/products/k-series-12x6-propeller .... https://www.masterairscrew.com/collections/scimitar-series/products/scimitar-13x6-propeller But for the differance of only 500 rpms i would go with what make you and the engine happy Very Happy
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Post  balogh on Thu Dec 26, 2019 7:31 am

I have always used APC 12x6 on this engine and it has a bit narrower chord than the Master Airscrew so it revs up to 10.5k max with 20% nitro.
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