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Oct 03, 2012, 06:54 AM
Scratch-builder
viper1990's Avatar
Thanks guys, unfortunately i didn't have much time to concentrate on the paintjob or she'll be a beauty. I had to invest more time into designing the structure and airfoil of the wings so i can guarantee that i can put her in the air safety.


Quote:
Originally Posted by jdlilfan View Post
Looks great! Looks like it flies good as well! Love those clamshell reversers. Can you take a pic of how you installed the servo and its actuation to the thrust reverse? Curious how you did it?
Sure, i've added an attachment of the linkages. The servo is embedded inside the fuselage on the other side so i couldn't really take a snapshot of it, but i drew a diagram of what it actually looks inside!

Its pretty simply actually if you look at it. Just a HXT900 servo and 2 push rods controlling each engine cowl.
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Oct 03, 2012, 10:56 AM
Registered User
Delightful ... fantastic! Thanks for posting your extraordinary build.
Oct 03, 2012, 11:44 AM
Altitude is my friend...
Depronicus's Avatar
Quote:
Originally Posted by David A Ramsey View Post
Delightful...fantastic...extraordinary...
...and more. We'll run out of superlatives for this one.

This is beyond amazing.
Oct 03, 2012, 01:54 PM
Registered User
jdlilfan's Avatar
Thank you! I want to do something similar on a Super 80 project I am working on.
Oct 03, 2012, 09:45 PM
Airliner Builder
WAGliderGuy's Avatar
Excellent work viper!! 5 days, that is very inspiring. Thanks for sharing with us!

Ethan
Oct 04, 2012, 06:30 AM
Scratch-builder
viper1990's Avatar
Thanks guys for all your fantastic comments.

Building it non-stop for 5days straight was like being in airplane building boot camp. , i got a well deserved rest on a sunday after breathing in all the foam and wood dust along with minor abrasions from using the sanding block.

Another picture of my Boeing 727 with picture just freshly taken outside my house.
Last edited by viper1990; Oct 04, 2012 at 10:32 AM.
Oct 04, 2012, 12:49 PM
Registered User
hi viper..awesome job..have always enjoyed ur vids and also ur thread on daddy hobbies ..the 777 nd 787..wud love to come see ur airliners in person when in singapore..goodluck!
Oct 07, 2012, 08:34 PM
Up-Out-&-Gone
demondriver's Avatar
Here's two Great 727 video I found!

Flying Heavy Metal Episode Two: Jet Set-Part 2 High Quality (6 min 53 sec)


Flying Heavy Metal Episode Two: Jet Set-Part 3 High Quality (8 min 5 sec)
Latest blog entry: It's 737 Time!
Oct 09, 2012, 06:44 AM
Scratch-builder
viper1990's Avatar
Thanks flying_g! by the way are you a Singaporean too?

DemonDriver, thanks for both that very informative videos on the Boeing 727, i didn't know so much about them until i watched them. Back in the 1970s, i'm very sure it's one of the best,if not the best commercial airliners ever built!
Last edited by viper1990; Jul 02, 2015 at 04:54 AM.
Oct 24, 2012, 12:22 PM
Scratch-builder
viper1990's Avatar
More pictures of her flying from different angles in low resolution.
Jul 03, 2015, 04:51 AM
Scratch-builder
viper1990's Avatar

Boeing 727 revived


Almost 3 years she has been sitting motionless chucked in one corner in my home. I hadn't found an opportunity to maintain my rc-flying skills over 9 months as i was too caught up with my A350 scratch build.

Afraid that my competency level had dropped, I've decided to revive her once more and use it as a "trainer" in preparation for my A350 madien flight. True enough, i wasn't as good at landing as before as i had executed many Go-Arounds. There were many instances where i came in too fast and furious for landing.

As for the taking offs and cruising , I've found it very manageable with ease. Once i fine-tuned my landing skills. I'll than be confident enough to fly the A350.

The pictures you see are only the nicely captured photos. If i had post the flying video, it would have looked like reckless flying!

Nevertheless , i had a fun time flying her again. Will practice more over the next few weeks.
Jul 03, 2015, 05:00 AM
Up-Out-&-Gone
demondriver's Avatar
Viper Sir. . . . . That's one sweet trainer!
Latest blog entry: It's 737 Time!
Jul 03, 2015, 09:28 AM
Skylar's People
cwrr5's Avatar
Quote:
Originally Posted by viper1990 View Post
<snip> There were many instances where i came in too fast and furious for landing.

<snip>
Nevertheless , i had a fun time flying her again. Will practice more over the next few weeks.
Better to be "fast and furious" than "slow and crunchy"

Agreed, that's an awesome "trainer". Glad you had fun with it, that's the whole point.
Jul 03, 2015, 10:32 AM
Trabado por las importaciones
mwrzesinski's Avatar
Quote:
Originally Posted by viper1990 View Post
Tuesday

I have chosen Haoye 55mm ducted fan, for no particular reasons, probably it has 7 blades which produce more static thrust than achieving high efflux velocity as i'm not going for speed. I'll run it at a lower kv compared to other EDF of it's class, at 4000kv. Its blade at it's root is measured close to 70degrees! Of course, once the plane starts picking up speed, the blade from a stalled AOA will un-stall itself as soon as higher airspeed enters the inlet. I spent the next 2hours balancing the blades to give it the "wooshing" sound that everyone likes to hear with minimum vibration.

The engine pods are designed slightly bigger than the real aircraft (else I'll need a 35mm edf to make it look scale!) I've added thrust reversals on the engine pod too! Won't be elaborating much on this, its just simple mechanics and linkages pushing and pulling the cowl, picture will says it all!

wow! excelent! where did you hide the servo for the reverser?
Jul 04, 2015, 10:59 PM
Scratch-builder
viper1990's Avatar
Thanks guys!

Anyway for the servo for the thrust-reversers is embedded in the fuselage,behind the engine, hidden from view. I've draw the servo in the autocad for your reference.


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