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Old Mar 13, 2012, 05:28 PM
Avoid The Ground!
Flexserve's Avatar
United States, FL, Tampa
Joined Sep 2008
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Quote:
Originally Posted by DerekB View Post
I don't know if you saw my test video of the Change Sun 10 blade 70mm with Hobby King L2855-2300kv outrunners. $15 fan $13 motor. It more or less gives same ballpark performance to the setup you have in the Alaska Airlines. Output can be increased up to twice (1600 watts for sure) depending on the motor / battery setup, plus the great sound. A spreadsheet with motor and results is maintained here. I'm using the CS 10 blade fan for the sound it makes. My fans were only static balanced in the video and I can get them to sound even better with some dynamic balancing, but I will fly with them as-is.

http://youtu.be/uiql3QfO5FU
"Flight attendants prepare for departure" ROTFL never laughed so hard! Nice sounding fans!
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Old Mar 13, 2012, 07:26 PM
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Joined May 2011
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hey guys for those of you who added carbon fiber rods to the wings can you tell me the diameter you used also if you added them to the flaps what diameter thanks
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Old Mar 13, 2012, 11:24 PM
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United States, WA, Seattle
Joined Jul 2010
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Originally Posted by markyb13 View Post
hey guys for those of you who added carbon fiber rods to the wings can you tell me the diameter you used also if you added them to the flaps what diameter thanks
I didn't use rods per se (hollow tube shaped), but rectangular cross section lengths on end. Much easier to install, less destruction of the wing.

And I used them on the outboard (long) flap sections too.
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Old Mar 13, 2012, 11:53 PM
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Maui, Hawaii
Joined Dec 2007
327 Posts
We have a winner! pulsery2K1. You got it. I do have the Scorpion HK-2221-8 motors. Checked the Scorpion website and this is what it says for the motor- "Max Lipo Cell 3s " Oops! I was using 4S. Tried it again today with 2 3S 3000 batteries & had it up at almost full throttle for 5 minutes. Wattmeter showed the amp draw at 44.56 amps. After 5 minutes it showed I still had about 2800 mah left in the batteries. So I will just fly it with 3S batteries. For some dumb reason I thought I could use 4S batteries. Should have done my homework first. Thanks for all the help. Now just need mother nature to give me a nice day on my day off.............................
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Last edited by Hawaiian Flyin; Mar 14, 2012 at 01:14 AM.
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Old Mar 14, 2012, 08:24 AM
6 months to finish a rtf
pulsery2k1's Avatar
upstate ny
Joined Jun 2003
1,859 Posts
Hawaiian Flyin

your welcome, seems we (back east ) are haveing the nice weather
I'm from Northern Cal and when I grew up there was a large Hawaiian
pop living there , because it was to expensive to live on the islands;

I spent several months there in the service , and can only remember
a couple of bad day's the rest were just perfact.

well good luck its an easy model to fly
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Old Mar 15, 2012, 12:22 AM
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Maui, Hawaii
Joined Dec 2007
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It's winter here & we just had a round of heavy rains with some snow on the big island & Maui. Oahu had golf ball sized hail & even a tornado! It's been very windy 99 percent of the time. 30mph plus!
Going to look on HobbyKing for new 3S batteries for the plane. One of the reasons I went for 4S 4000mah was because I needed the weight to get it balanced. But if I use 2 3s 5000 mah batteries it should be pretty close to what I had with the 4S batteries. And I should be able to fly it longer! With the 3S batteries it showed about 485 watts at full throttle & after 5 minutes it was down to 476watts. Is that enough power to fly the plane? With the 4S batteries I didn't take note of the watts but it sure had lots more thrust coming out of the engines. Just keep hoping for a calm day on my day off..................................
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Old Mar 15, 2012, 05:59 AM
Don't Move I've Dropped My Nut
bamaguy's Avatar
United States, AL, Huntsville
Joined Feb 2009
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Instead of HK LiPo's, consider these. They are great batteries.

http://www.hobbypartz.com/98p-40c-50...se-direct.html

OR:

http://www.hobbypartz.com/77p-sl5000-3s1p-40c-3333.html
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Old Mar 16, 2012, 06:42 PM
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Maui, Hawaii
Joined Dec 2007
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Thanks for the tip Bama. Will check it out.
Got my allowance this week so thinking of getting another 737. Since I have 2 extra 4S 4000 batteries that dont fit in any of my other planes might just get the bare kit & put all my own electronics in it. Kind of looking at the 787 Dreamliner too. Tough decision.............
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Old Mar 17, 2012, 06:50 PM
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United States, WA, Seattle
Joined Jul 2010
482 Posts
Different Retracts?

Working on my second Windirder and curious if anyone is currently using a different retract system than that provided?
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Old Mar 17, 2012, 07:32 PM
6 months to finish a rtf
pulsery2k1's Avatar
upstate ny
Joined Jun 2003
1,859 Posts
Doug W

on the US airways one I removed the stock retracts ,which were not
working properly with these:

http://www.hobbyking.com/hobbyking/s...stem_1pc_.html

they have been working well -

they now sell these with metal trunions , at
http://www.pw-rc.com/login.php
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Old Mar 17, 2012, 08:48 PM
Don't Move I've Dropped My Nut
bamaguy's Avatar
United States, AL, Huntsville
Joined Feb 2009
1,806 Posts
Hi, Doug;

You might consider these.....I hear the RC Lander all metal retracts work very well.

http://www.rclander.com/default.aspx...5-e11c96fb0994
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Old Mar 18, 2012, 01:39 AM
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Doug W's Avatar
United States, WA, Seattle
Joined Jul 2010
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Quote:
Originally Posted by pulsery2k1 View Post
Doug W

on the US airways one I removed the stock retracts ,which were not
working properly with these:

http://www.hobbyking.com/hobbyking/s...stem_1pc_.html

they have been working well -

they now sell these with metal trunions , at
http://www.pw-rc.com/login.php
Pulsery what are you using for the nose gear steering solution with the Hobby KIng retracts? Also, did you just use the 3mm shafts from the stock kit?
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Old Mar 18, 2012, 10:01 AM
6 months to finish a rtf
pulsery2k1's Avatar
upstate ny
Joined Jun 2003
1,859 Posts
Doug W

I drilled out the trunions to 4 mm and the gear legs , for steering
I used a 4 mm leg from a mechanical retract with a clip on top
installed the pull / pull horn on bottem then the gear leg.

the new retracts with metal trunions come ready for 4mm shaft's
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Old Mar 18, 2012, 05:12 PM
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United States, WA, Seattle
Joined Jul 2010
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Quote:
Originally Posted by pulsery2k1 View Post
Doug W

I drilled out the trunions to 4 mm and the gear legs , for steering
I used a 4 mm leg from a mechanical retract with a clip on top
installed the pull / pull horn on bottem then the gear leg.

the new retracts with metal trunions come ready for 4mm shaft's
Thanks Pulsery!
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Old Mar 18, 2012, 05:16 PM
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Doug W's Avatar
United States, WA, Seattle
Joined Jul 2010
482 Posts
First Look: Serial Number 2, RAAF Wedgetail

I began work this weekend in earnest on my next Windrider 737, an RAAF AEWCs "Wedgetail." Thus far, I have cut out and shaped the flaps for the wings- (no operational spoilers this time), reduced the size of the vertical stab fairing and created the large "surfboard" antenna on top...
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Last edited by Doug W; Mar 18, 2012 at 06:48 PM.
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