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NX4 Discussion and support of the Gaui NX4 Nitro Helicopter |
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11-08-2012, 05:01 PM | #61 (permalink) |
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Join Date: Nov 2009
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Are you running a fuel magne? I am back and forth on the header tank. I ordered a pushglo for mine. I also have a B6T and it looks like yours mounted up really well. I will have the sk540 too. Did you hard mount the sk540? What size lipo are you using with the B6T?
Last edited by joallen001; 11-08-2012 at 06:14 PM.. |
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11-09-2012, 08:05 PM | #62 (permalink) |
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Join Date: Aug 2009
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I just posted this in the RPM sensor thread,but figured there are lots of pics that may help others. I did opt for the header tank... Bobby runs one, so I figure its good enough for him, good enough for me! Plus knowing that I won't lean out the engine and have a little safety margin is always good. No fuel magnet.
Before: After!!! YEH!!! Ok, here's what I did for the RPM sensor. I used 2 of the brass inserts from an old Trex500 pitch slider tail I had laying around. I used a washer on each side of the frame and a washer on the sensor itself. Trickiest part was lining everything up and then tightening down on the bolts. For the header tank, I used the two smaller spacers and this gave me enough clearance to run the tail servo linkage between the main tank and the header tank. I then cut out a piece of foam and taped it between the tanks to provide some support. Other side... I used an electronics mount on this side to install a satellite. The other satellite is in the back over the boom block. You'll notice that the throttle servo linkage is not level. If you install the servo per the book with the horn closer to the top of the heli, then you have to put the ball link way low on the servo horn so it will be level with the horn on the carb... however, this gives it too much throw and there is not enough resolution for the vbar. By installing a shorter servo horn, you can use most of the stick... I think I ended up with 84% of max throttle on the vbar and -115% per the combined mode instructions to get full travel from fully closed throttle to max throttle. I liked the advice of installing a filter between the muffler line and the tank. This is a 2-way filter and is very low restriction. I also installed that shut-off valve and used it to pressure test my tanks. I closed it and then started pumping fuel into the tanks using my electric pump.... soon after the header tank filled up, the pump started choking! I released the pressure by opening up the clamp and all was fine... so pressure test passed. Novak tape is your friend for securing those connections to the FBL controller! I managed to get the little engine started today and ran it for a couple of minutes. Starting it isn't a problem, or even idling it, but once I move the collective a bit, it stalls. I have the needle set to 1.5 turns per the book... so I may have a fuel supply issue that I'll work out tomorrow.
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Rush 700 * Trex 700N x 2 * Trex 600Pro * Goblin 570 * 450L Dominator - V-Bar on all AMA #934662 |
11-11-2012, 08:17 AM | #63 (permalink) |
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Join Date: Nov 2008
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Gaui X7, X5, NX4, X42, X3 Gaui USA, Empire Hobby, JR Americas, Cyclone Blades, MKS Servos USA, OptiPower Batteries,YS Engines, PowerMaster Fuels |
11-11-2012, 10:55 AM | #64 (permalink) |
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Join Date: Jul 2009
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Sweet!
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Teambob00 |
11-12-2012, 03:38 PM | #65 (permalink) |
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Join Date: Jun 2006
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Hi,
Few of the 1st setup flights Bruno |
11-13-2012, 01:28 AM | #66 (permalink) |
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Join Date: Feb 2010
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First flight
The motor need to be tuned good [ame]http://m.youtube.com/watch?v=-oXnvoA68H4[/ame] |
11-13-2012, 11:46 AM | #67 (permalink) |
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Join Date: Oct 2009
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only frenchies here?
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next simu only... |
11-14-2012, 10:49 AM | #69 (permalink) |
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Join Date: Aug 2009
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American video here! LOL... I'm still bogging it on tic tocs and rainbows. I've decreased my collective from 13 to 12 and my top head speed down to 2650... hopefully that will help.
This video is using the old settings (13 pitch, 2700RPM headspeed, 1.25 turns on the needle). [ame]http://www.youtube.com/watch?v=bth_wHRvWBg[/ame]
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Rush 700 * Trex 700N x 2 * Trex 600Pro * Goblin 570 * 450L Dominator - V-Bar on all AMA #934662 |
11-14-2012, 12:56 PM | #70 (permalink) |
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Join Date: Oct 2009
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very nice!!!!
just sold my JR E8 and i've got an idea how to spend my money ....
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next simu only... |
11-14-2012, 03:15 PM | #71 (permalink) | |
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Join Date: Nov 2009
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Quote:
Awesome! Let us know how the new settings go. |
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11-16-2012, 07:22 PM | #72 (permalink) |
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Join Date: Sep 2010
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wow, you guys do some intensive motor break in flying, lol,
my first 3 tanks was like watching someone how to hover in a cloud of smoke. wonder who will burn their motor up first.. probably me from a crash
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AMAIN Heli Team |
11-18-2012, 10:55 PM | #73 (permalink) |
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Join Date: Dec 2011
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Here's 'breaking in' of NX4 by my buddy in here Finland - probably 5th tank.
Engine is still bit rich, but I was really impressed by the performance of this heli, some attitude [ame]http://www.youtube.com/watch?v=Jw9_qqC4V-g[/ame]
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MiniProtos Carbon with Low FBL, MSH 2580kV, YGE 60A, Mini V-BAR Kyosho Concept 46VR with ASP46, GP750 Walkeras: Genius CP Brushless, V100D03, V120D02 Futaba T8FGS |
11-24-2012, 11:18 PM | #75 (permalink) |
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Join Date: Apr 2004
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Love the canopy!
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www.cuttingedgecnc.com |
11-25-2012, 05:54 AM | #76 (permalink) |
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Join Date: Sep 2009
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Was hoping to maiden today, but too windy here.
Been a great kit to build, can't wait to fly her. Cheers, Simon |
11-25-2012, 07:02 AM | #77 (permalink) |
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Join Date: Aug 2009
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Nicely done Simon! I would turn the skids around because this heli is quite tail heavy and turning them around helps prevent it from tilting backwards. Don't forget your pipe deflector too! Best of luck with the maiden.
Also, you may want to move the header forward for better CoG.
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Rush 700 * Trex 700N x 2 * Trex 600Pro * Goblin 570 * 450L Dominator - V-Bar on all AMA #934662 |
11-25-2012, 07:53 AM | #78 (permalink) |
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Join Date: Sep 2009
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If I move the tank forwards it catches on the canopy, so I thought I'd try it there first (seems a shame to not use all the brackets). It would have been nice to have had an exhaust deflector in the kit
Will have a think about the skids, I really don't like seeing models with them on backwards. I know some prefer it, but to me it just looks wrong. Will not be able to fly again till next weekend, will post back then. Cheers, Simon |
11-25-2012, 08:25 AM | #79 (permalink) |
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Join Date: Sep 2009
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Just looked at the header tank again and realised it would be better positioned just using some foam and tie wraps as others have already done. Shame as I could have bought a much cheaper header tank without all the anodised brackets
Oh well, they will get used a some point I'm sure. Thanks for the advice. Cheers, Simon |
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