HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Sep 13, 2012, 06:34 PM
"Take Off" eh!
vettster's Avatar
Canada, ON, Beeton
Joined Aug 2008
3,142 Posts
Way to go! jOhnnny OHH!
vettster is online now Find More Posts by vettster
RCG Plus Member
Latest blog entry: 3DTRYER ripped me off!!!
Reply With Quote
Sign up now
to remove ads between posts
Old Sep 13, 2012, 07:53 PM
Registered User
Canada
Joined Dec 2005
201 Posts
Quote:
Originally Posted by xviper View Post
Nice! What power system are you going to use? I'm going with these:
http://www.hobbyking.com/hobbyking/s...dProduct=22070
http://www.hobbyking.com/hobbyking/s...dProduct=19110
http://www.hobbyking.com/hobbyking/s...dProduct=24566

I've got a couple other builds to get finished first, so it'll be a winter project.
Dude the jet is already flying! I did the maiden last month Im using
8s 3300 & 4000mah packs
ARC 36-75-1 motor
Wemo 90mm fan
Castle Ice 100amp esc

Not exaggerating but hands down, this jet actually sounds like a turbine!!!
johnny_0 is offline Find More Posts by johnny_0
Reply With Quote
Old Sep 13, 2012, 08:43 PM
Registered User
Canada
Joined Jul 2009
6,433 Posts
8s should really make it zing along.
xviper is online now Find More Posts by xviper
Reply With Quote
Old Oct 01, 2012, 07:04 AM
Registered User
Joined Dec 2005
14 Posts
Could anyone who knows tell me if the stripes are painted on or simply decals that could be removed?
Frank Palmer is offline Find More Posts by Frank Palmer
Reply With Quote
Old Oct 10, 2012, 06:51 PM
Registered User
Canada
Joined Jul 2009
6,433 Posts
Quote:
Originally Posted by Frank Palmer View Post
Could anyone who knows tell me if the stripes are painted on or simply decals that could be removed?
Just started to tinker with mine today - got the fan, motor, ESC, external UBEC, RX bound to TX, did a test run on the motor. All is working.
It would appear as though the stripes are decals. Can't tell for sure but they may have a clear coat over them.

Did anybody get any build instructions for this?
xviper is online now Find More Posts by xviper
Reply With Quote
Old Oct 10, 2012, 06:57 PM
Chillaxin dude!
BulletMaster's Avatar
Newcastle, NSW, Australia
Joined Apr 2003
4,795 Posts
None with mine...
BulletMaster is offline Find More Posts by BulletMaster
Reply With Quote
Old Oct 10, 2012, 07:12 PM
Registered User
Canada
Joined Jul 2009
6,433 Posts
Quote:
Originally Posted by johnny_0 View Post
I think Im gonna go with a very forward CG approx 1.25" back from the leading edge of the wing. With that said, I still have to add quite a bit of nose weight
Daniel, have you kept this CG or have you tinkered with it and moved it to a better location?
xviper is online now Find More Posts by xviper
Reply With Quote
Old Oct 10, 2012, 07:24 PM
Registered User
Canada
Joined Jul 2009
6,433 Posts
Just found some instructions. Someone loaded a set to the HK BD-5 page:
http://www.hobbyking.com/hobbyking/s...07X7478X26.pdf
xviper is online now Find More Posts by xviper
Reply With Quote
Old Oct 10, 2012, 09:32 PM
Chillaxin dude!
BulletMaster's Avatar
Newcastle, NSW, Australia
Joined Apr 2003
4,795 Posts
Thanks for that... I hadn't noticed them before..
BulletMaster is offline Find More Posts by BulletMaster
Reply With Quote
Old Oct 11, 2012, 03:48 PM
Registered User
Canada
Joined Dec 2005
201 Posts
Quote:
Originally Posted by xviper View Post
Daniel, have you kept this CG or have you tinkered with it and moved it to a better location?
Ive removed all the lead weight in mine and my CG is just behind the main spar, or 65mm from where the wing meets the fuse. I havent moved it any further, it possibly can but I'm not gonna try it Ive done enough test piloting this year crashed waay to many jets.
johnny_0 is offline Find More Posts by johnny_0
Last edited by johnny_0; Oct 11, 2012 at 06:06 PM. Reason: correction in measurment!!!
Reply With Quote
Old Oct 11, 2012, 03:56 PM
Registered User
Canada
Joined Jul 2009
6,433 Posts
Quote:
Originally Posted by johnny_0 View Post
Ive removed all the lead weight in mine and my CG is just behind the main spar, or 75mm from where the wing meets the fuse. I havent moved it any further, it possibly can but I'm not gonna try it Ive done enough test piloting this year crashed waay to many jets.
If I recall correctly, you had a LOT of weight up front. I'm amazed that moving the CG back 15mm from the stock recommended allows you to take all that weight out. Was that with the battery shoved as far forward as possible? I'm going to use a 5000mah battery. Hopefully, that will give the nose needed weighting.
xviper is online now Find More Posts by xviper
Reply With Quote
Old Oct 11, 2012, 04:07 PM
Registered User
Canada
Joined Dec 2005
201 Posts
I had 150grams of lead weight in there. Yes my batteries including the receiver pack are as far forward as I can get them to fit!
johnny_0 is offline Find More Posts by johnny_0
Reply With Quote
Old Oct 11, 2012, 06:24 PM
Registered User
Canada
Joined Jul 2009
6,433 Posts
Thanks again (and for the correction). I'll also be using a UBEC with its own battery. 150 grams is about the size of one of my 1800mah, 3S batteries. I should just find an old dead one for ballast.
xviper is online now Find More Posts by xviper
Reply With Quote
Old Oct 25, 2012, 08:50 PM
Registered User
Canada
Joined Jul 2009
6,433 Posts
Nearing completion of my BD-5 but I've reached a bit of an impasse. I've installed a set of HobbyKing retracts. The mains went in pretty slick, but I'm having a time figuring out how to do the front retract and make it steerable. With the stock fixed gear, it would have been easy. With the HK retracts and the supplied steering method where the steering servo is actually attached the moving part of the retract, there is no room for the servo to clear. Even using the steering piece off my old F/A-18 EDF, there is no room. Either way would require quite a bit of the plywood framework to be cut and removed. Then the strength of the retract mount would be weakened. You can see the 2 types of steering gear in the following vid. At least I've got the rest of winter to figure it out.

HobbyKing BD-5 build (2 min 1 sec)
xviper is online now Find More Posts by xviper
Reply With Quote
Old Nov 26, 2012, 07:42 PM
Too many numbers
United States, OH, Troy
Joined Oct 2010
1,790 Posts
Just found out I'm getting this for Christmas! Sweeeeet!

Anyone know what size wheels and how deep the retract wells are? Looking for gear. Thanks!
c131frdave is offline Find More Posts by c131frdave
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Mini-Review HobbyKing BD-5 build / first report rafe_b Parkflyers 16 Jul 30, 2012 09:51 PM
Sold NEW Turnigy 2815 EDF Outrunner 4800kv for 55/64mm With 64mm 5 Blade Ducted Fan Kit nybeechpilot Aircraft - Electric - Jets (FS/W) 1 Jun 25, 2012 09:26 AM
Discussion Whats a good ducted fan fighter(5 channel or more) to buy? CallsignAllstate Micro EDF Jets and Power Systems 1 Apr 23, 2012 10:52 AM
For Sale K&B .21 3.5 cc ducted fan engine no pipe or muffler $75 shipped sagomon Aircraft - Fuel - Jets (FS/W) 0 Mar 25, 2012 10:03 AM