Xaircraft X500-D $300 ARF brushless quad from China - Page 43

importon · Nov 04, 2009, 03:52 AM

that thing flys smooth as hell! which do you like better, this or your quadpowered?

Quote:

Originally Posted by G-unit

One more,this was after the crash of my other QC.

Doofer · Nov 04, 2009, 04:05 AM

With 1500-2500 packs, one ESC suddenly dropping power happened to a few of us, occasionally (but destructively!).

I did some soak (=long) tests with a 4000 pack, 1045 blades, AUW 910g, just to stress things, and repeatedly got a dropout (on whatever side the CofG was towards) at 7-8 minutes in. The side (motor & ESC) it dipped to was noticeably hotter than the others. From this I deduced that the problem wasn't glitching or controller firmware, but ESC overheating.

I put little heatsinks on each ESC's output transistors both sides, outside the heatshrink 'cos I am superstitious

, and then found I could empty a 4000 pack in a single 20 minute+ flight, at this 'over max spec' weight, without dropouts.

(This isn't the same as saying you won't get dropouts with heatsinks - just that it worked for me).

Others have also re-mounted the ESCs on the arms so they catch some of the downwash.

I am awaiting delivery of some 8045s (lost the original tri-blades in a dipping incident) to see if they are more efficient (= less likely to cause overheating) than the 1045s.

(In correspondance, Xaircraft agree that, over-weight, the ESCs might overheat, but so far they won't acknowledge that this happens occasionally (and destructively!) with normal packs and normal flying. Which tells me something important about their attitude to their customers.)

G-unit · Nov 04, 2009, 09:04 AM

Quote:

Originally Posted by Quad_Addict

so what was the fix to the x500 with power dropping?

I don't use the 10x4 props and i don't have that problem no more

Sid3ways · Nov 04, 2009, 09:21 AM

G

I'm wondering how you mounted the lipo and rx in the RCD frame. Ive got them together in the middle but the side with the RX closest to it is heavier on that side. Is it negligible to have that little imbalance or should I possibly suspend it underneath in the middle?

G-unit · Nov 04, 2009, 09:39 AM

I put the battery on the bottom of the frame,i made a aluminum plate that bolt to the bottom and the use Velcro to hold the battery,I can make one for u ,just let me know.
G

Sid3ways · Nov 04, 2009, 09:44 AM

That would be sweet!

Will there be enough room to still put on the camera mount?

G-unit · Nov 04, 2009, 11:53 AM

Quote:

Originally Posted by Sid3ways

That would be sweet!

Will there be enough room to still put on the camera mount?

I will PM u tonight when i get home.

G-unit · Nov 04, 2009, 10:46 PM

Quote:

Originally Posted by importon

that thing flys smooth as hell! which do you like better, this or your quadpowered?

Well they both have there place,so i like them the same

importon · Nov 05, 2009, 12:57 AM

common. they're not your children. you can pick a favorite.

Quad_Addict · Nov 05, 2009, 01:07 AM

Quote:

Originally Posted by importon

common. they're not your children. you can pick a favorite.

well i will admit i like the x500 as well for couple reasons, but think about what kind of addons you can get with any other custom quad, the QP has huge support and addon support as do other like TT and MK. that should help your deicsion. even though the x500 may be fun to fly. think outside the box :P

btw they may not be children but certainly his babies :P

Sid3ways · Nov 05, 2009, 01:28 AM

Quote:

Originally Posted by importon

common. they're not your children. you can pick a favorite.

He caught some heat last time he picked one....

Update: Well tried to mount all of my camera (FPV) gear tonight and had a set back. Well with all the extra cabling and crap added to the frame it wouldn't start. I'd get the beeps and everything was fine according to the board but it just wouldn't arm the motors. I'm thinking the blame lies on the OLD ass Futaba T8U that I'm using that I had to borrow. It seemed to reset itself and i spent all night trying to reprogram it with no luck getting it to start. The only way I could get it to start was wiggle a few wires one time and the motors started up under a failsafe mode or something, it was wierd. I couldn't get them to start by the radio but if I fiddled with a few wires, the motors would start up and run at a low idle but the TX still had no control over throttle??? I'm going to remove all the FPV stuff and check all my wires again.

Quad_Addict · Nov 05, 2009, 01:57 AM

Quote:

Originally Posted by Sid3ways

He caught some heat last time he picked one....

Update: Well tried to mount all of my camera (FPV) gear tonight and had a set back. Well with all the extra cabling and crap added to the frame it wouldn't start. I'd get the beeps and everything was fine according to the board but it just wouldn't arm the motors. I'm thinking the blame lies on the OLD ass Futaba T8U that I'm using that I had to borrow. It seemed to reset itself and i spent all night trying to reprogram it with no luck getting it to start. The only way I could get it to start was wiggle a few wires one time and the motors started up under a failsafe mode or something, it was wierd. I couldn't get them to start by the radio but if I fiddled with a few wires, the motors would start up and run at a low idle but the TX still had no control over throttle??? I'm going to remove all the FPV stuff and check all my wires again.

i hate wiring issues. i feel for you, start from scratch with all connections and or solder joints. plus your radio just may be an issue like you said.

G-unit · Nov 05, 2009, 07:42 AM

One more from last night,and this one is my favorite it is flying right now.

Xaircraft X500-D (6 min 49 sec)

Sid3ways · Nov 05, 2009, 07:57 AM

Quote:

Originally Posted by Quad_Addict

i hate wiring issues. i feel for you, start from scratch with all connections and or solder joints. plus your radio just may be an issue like you said.

Yeah I just wish my Aurora 9 would come in so I could rule out the radio. RCD did a supurb job on the wiring an soldering so I doubt it but will be going back over it completely today.

Edit: great vid, so stable for a cheap ass quad, gotta love it.

importon · Nov 05, 2009, 09:01 AM

damn! does it ever get windy where you live?

Quote:

Originally Posted by G-unit

One more from last night,and this one is my favorite it is flying right now.

Xaircraft X500-D (6 min 49 sec)

Nov 04, 2009, 04:05 AM	#632
Doofer Registered User Join Date: Sep 2006 Location: Nottingham, UK Posts: 58	With 1500-2500 packs, one ESC suddenly dropping power happened to a few of us, occasionally (but destructively!). I did some soak (=long) tests with a 4000 pack, 1045 blades, AUW 910g, just to stress things, and repeatedly got a dropout (on whatever side the CofG was towards) at 7-8 minutes in. The side (motor & ESC) it dipped to was noticeably hotter than the others. From this I deduced that the problem wasn't glitching or controller firmware, but ESC overheating. I put little heatsinks on each ESC's output transistors both sides, outside the heatshrink 'cos I am superstitious , and then found I could empty a 4000 pack in a single 20 minute+ flight, at this 'over max spec' weight, without dropouts. (This isn't the same as saying you won't get dropouts with heatsinks - just that it worked for me). Others have also re-mounted the ESCs on the arms so they catch some of the downwash. I am awaiting delivery of some 8045s (lost the original tri-blades in a dipping incident) to see if they are more efficient (= less likely to cause overheating) than the 1045s. (In correspondance, Xaircraft agree that, over-weight, the ESCs might overheat, but so far they won't acknowledge that this happens occasionally (and destructively!) with normal packs and normal flying. Which tells me something important about their attitude to their customers.)

Nov 04, 2009, 09:21 AM	#634
Sid3ways Registered User Join Date: Jul 2007 Location: Swanton, OH Posts: 1,230	G I'm wondering how you mounted the lipo and rx in the RCD frame. Ive got them together in the middle but the side with the RX closest to it is heavier on that side. Is it negligible to have that little imbalance or should I possibly suspend it underneath in the middle?

Nov 04, 2009, 09:39 AM	#635
G-unit WHEN IN DOUBT FLOOR IT!!! Join Date: May 2006 Location: AZ Posts: 1,448	I put the battery on the bottom of the frame,i made a aluminum plate that bolt to the bottom and the use Velcro to hold the battery,I can make one for u ,just let me know. G

Nov 04, 2009, 09:44 AM	#636
Sid3ways Registered User Join Date: Jul 2007 Location: Swanton, OH Posts: 1,230	That would be sweet! Will there be enough room to still put on the camera mount?

Nov 05, 2009, 12:57 AM	#639
importon Registered User Join Date: Aug 2009 Location: New Zealand Posts: 156	common. they're not your children. you can pick a favorite.