Aeronavics / Droidworx Mounting Lipos to Boom problem

Q

Quinton

Active Member
I'm just starting to finish off my Skyjib 6 Ti, and coming across a problem mounting the lipos onto the booms.

Am flying in Hexa Y configuration, so the 2 red booms are my front (not a single boom).
There are a couple of problems, the plates just don't look strong enough just to be held with 2 screws in each of the centre booms, I know they are supposed to be held securely across 2 booms, but its not possible in Y configuration.

The straps that come with the Droidworx are a terrible length, they are far too long for a single battery (6200mAh), so only seems to be secured by about 1 inch of velcro.

So a couple of questions, first off, is it a bad idea to have a lipo at the front and one at the back, this way it could go across 2 booms, and be a bit more secure.
2nd, how do people secure the battery properly, the strap certainly does not seem sufficient to hold a lipo that almost weighs 1kg.
Do you also add velcro to the battery and the plate to stop it sliding?

Any feedback would be much appreciated, as the last thing I would want to see is an un-secure battery holder.
I know the build quality with the DW stuff is really good, but theres just a few things I see could be greatly improved in their design.

The new version seems to be much better, as it is held on the crash cage across the middle booms.
http://droidworx.co.nz/products/shop/upgrade-skyjib/upgrade-kit-skyjib-6-to-skyjib-super-6-qr/
 

R

RyanMcCrae

Member
HI, I had the same issue with my X4 Skyjib, In the end i just used two bolts with zippy 8000s and they have been fine. Its not ideal there clearly not designed for these configurations but they do work. I guess you could run them front and back it you wanted.
 


Q

Quinton

Active Member
Ah thanks for that, that would seem a good solution, have different sized straps.
So there is no problem then having a lipo at the front and one at the back, motor stress wise.
Ive looked everywhere but EVERYBODY seems to have them in the middle, I thought there may be a reason for that, as it flys better or something.
Maybe I am looking for a problem, that is not actually a problem?
 


Maverick

Maverick

Member
BTW, Have you thought about adding some orientation LEDs, they're very helpful, and cool at dusk too...

I recommend RED on left arm motor mount ; GREEN on right arm motor mount ; BLUE on rear motor mount ; also two VERY BRIGHT front facing LEDs, around the centre plates. From far distances, it makes it so much easier to make out your orientation, should your video signal fail.

View attachment 14504
 

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Q

Quinton

Active Member
Am concentrating on getting it up in the air for now :)
Too many different colours for my liking. add in the DJI LED and it would be like a disco.

Once I get it in the air (touch wood) I will be breaking it down, and turning it into the super 6 with 500mm booms and qr plates, so will think about LEDs then, and it will give me a chance to tidy it up with a few things I may have left out with initial build.
 


Q

Quinton

Active Member


cbpagent72

cbpagent72

Member
Maverick said:
BTW, Have you thought about adding some orientation LEDs, they're very helpful, and cool at dusk too...

I recommend RED on left arm motor mount ; GREEN on right arm motor mount ; BLUE on rear motor mount ; also two VERY BRIGHT front facing LEDs, around the centre plates. From far distances, it makes it so much easier to make out your orientation, should your video signal fail.

View attachment 18210
Click to expand...


Maverick,

What is that board that you have your Droidworx mounted to? Is it some sort of testing bench?
 

rotorvista

rotorvista

Member
I have a load of the Droidworx battery mounts, I ordered 2 sets as I didn't realise they came with the kits and Droidworx didn't tell me that when ordering, same with the red boots.... anyway yes they are pants so I never used them. I used the gps mounting brackets and made some carbon fibre platforms and use 3m dual lock as added security for my batteries. I think the reason Droidworx have now mounted the batteries on the crash cage is to reduce yaw drift, I have some and cannot dial it out with the gains but I don't do a lot of fast yawing so it doesn't bother me, mounting them on the front and rear will help to counteract the centrifugal effect from the landing gear legs too.

View attachment 14510 View attachment 14511
 

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Q

Quinton

Active Member
ianp said:
I have a load of the Droidworx battery mounts, I ordered 2 sets as I didn't realise they came with the kits and Droidworx didn't tell me that when ordering, same with the red boots.... anyway yes they are pants so I never used them. I used the gps mounting brackets and made some carbon fibre platforms and use 3m dual lock as added security for my batteries. I think the reason Droidworx have now mounted the batteries on the crash cage is to reduce yaw drift, I have some and cannot dial it out with the gains but I don't do a lot of fast yawing so it doesn't bother me, mounting them on the front and rear will help to counteract the centrifugal effect from the landing gear legs too.
Click to expand...

Thanks this is a big help.
The DW battery holders may not be so bad on the front/back as then its a lot easier to get at the slots for the velcro, it was pretty useless when only the 2 bolts were holding it, but I see a lot of users using it that way, thats why I thought there could be a problem with front/back.

I bought some of that 3m dual lock the other week and didn't think much of it when opening a small strip by hand, until i actually stuck it underneath a few things.
Its like super glue that stuff :)
 

Maverick

Maverick

Member
cbpagent72 said:
Maverick,

What is that board that you have your Droidworx mounted to? Is it some sort of testing bench?
Click to expand...

This actually isn't my photograph - I just posted it, as it has the same LED configuration as mine. Yes, it's a test bench. I have something similar myself, but mine is on a tripod - it's a projector stand, that swivels round, and also tilts. I bought it from a local sound/audio shop.

Very handy when working on your machine, you can just swivel it round to access all sides of it.

View attachment 14520

It can be found on the web too, when you search for "Pulse laptop/projector stand"

http://cpcireland.farnell.com/pulse...ctor-stand/dp/ST0188715?CMP=mobileweb_product
 

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Q

Quinton

Active Member
ianp said:
I have a load of the Droidworx battery mounts, I ordered 2 sets as I didn't realise they came with the kits and Droidworx didn't tell me that when ordering, same with the red boots.... anyway yes they are pants so I never used them. I used the gps mounting brackets and made some carbon fibre platforms and use 3m dual lock as added security for my batteries. I think the reason Droidworx have now mounted the batteries on the crash cage is to reduce yaw drift, I have some and cannot dial it out with the gains but I don't do a lot of fast yawing so it doesn't bother me, mounting them on the front and rear will help to counteract the centrifugal effect from the landing gear legs too.
Click to expand...

Also looking at your pictures, you may have the GPS/Compass located on top of the crash cage, is this correct?
If so I take it there are no problems putting it up there.
I'm actually going to thread the compass holder that came with the DJI aluminium round holder, and bolt it through the hole at the top of the crash cage, that way, I can easily turn it if required.
On a side note, the bolts that DW supply for bolting the battery holder, aren't really long enough. to catch the Nylocs I see.
It would be great if DW could re-design the crash cage, to make it a lot easier to get on/off quickly, as its not the quickest thing in the world to access especially if you want to have your large dome inside there also.
I'm sure it could be much better than their current design.
 

rotorvista

rotorvista

Member
yes my gps is on top of the cage and no problems with it there. That is why they have redesigned the cage and the centre plates with the upgrade it can be removed easier. If you look at my pics you can see that I put my bolts upside down to make it easier to access.
 

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