Multirotor, multicopter and quadcopter discussion - The Drone thread

bit of advice guys, get a kit or build from scratch.

Depends how brave you are!

There's some really good info on the first couple of pages of this thread.

What did you want to do with it? That will ultimately dictate your choices, along with your budget.....

Acro?

FPV?

Aerial Photography?

Maybe we should have a "spec me a multirotor" thread :)
 
a mix of aerial photography and try a bit of fpv down the line.

as with construction, im not afraid to get technical.

budget im not to sure, i dont really know the market so if i say something like £400, i don't know if that is going to get me utter rubbish or absolutely amazing if you know what i mean.
 
It won't be a carbon framed, SLR carrying octocopter but for £400 you should be alooking at a reasonable quad/hex with a gopro gimbal and gps for self flight and returning back to you at the flick of a switch etc.

I'm on around £300 to date and i've got a carbon framed quad with gopro gimbal and fpv screen so i can see where it's flying/pointing at. No gps yet though.
 
I've just built an fpv250. Kinda easy at the beginning but nearly pulling my hair out over stupid things.

Hopefully sort everything out tomorrow and have it flying.
 
£400 will definitely get you started......

I went cheap to start off with. £7 f330 frame from hobbyking, KK2 Flight Controller, Hobby King ESC's, Turnigy motors and batteries with a very cheap charger, Tx/Rx combo that cost me about £30! Total build cost was under £200 and I think I've broken about 4 or 5 arms and about 20 props learning to fly the thing.

I think that learning to fly without GPS aids is quite important in the long run. Especially if you want to get into FPV as that tends to be done without gps.

The one thing I would invest in is a decent transmitter, it will outlast all of your multirotors and having a good one makes life so much more pleasant. FrSky Taranis is good if you can get one, not sure about others but I'm sure people will chip in with suggestions.
 
It won't be a carbon framed, SLR carrying octocopter but for £400 you should be alooking at a reasonable quad/hex with a gopro gimbal and gps for self flight and returning back to you at the flick of a switch etc.

I'm on around £300 to date and i've got a carbon framed quad with gopro gimbal and fpv screen so i can see where it's flying/pointing at. No gps yet though.

That would fit the bill perfectly. any frames i should be looking at?
 
FPV banned in the USA, it's a matter of time until it happens here.

I've met guys who say they fly 10km out, it's in total breach of model flying safety in the UK and it scares the authorities ****less.
 
The FPV250 is finally finished, and to watch it take off is a great feeling :)

Ive only hovered it indoors and Im going to get about 5 mins of flight so im going to have to get some better batteries.

I love it :)

Bv2WkIr.jpg.png
 
In total, about £120. But I had my own transmitter and charger which kept the cost down.

Also, many thanks to d_brennen & Genoma for their help and links.
 
Last edited:
In total, about £120. But I had my own transmitter and charger which kept the cost down.

Also, many thanks to d_brennen & Genoma for their help and links.

Ahh, gosh :o Good to see you are well under way ;) A couple of titbits from someone who as spent much money on bits and even more time trying to get it all to play nice...

* If you are going to FPV with it, buy the long frame upgrade kit. HK is OOS at the mo but there are a few UK retailers who have whole frame kits (and at least one I have spoken to plans to get the upgrade kit too. The stock frame is just so dinky and the X layout is far less favourable to FPV than say a H quad. HK have recently listed a clean and dirty version too for not a lot of money - Linky This one has motor mounts included which widen the choice of motors a bit, though as Genoma knows, zipties can often come to the rescue ;)

* Even on the Multistar 1704s, I don't feel the included battery is up to spec. Look for at least 1500mah 3s 35c+. I'm loving Zippy Compact 1500mah batteries at the mo (or would be if I wasn't dying of hayfever)

* Those Gemfan 5030 triblades are ok, and cheap enough to stock up on but any kind of down will usually result in one or more broken props. This could be said of any prop of course, but I seem to have more luck with 5040 HQ props (bought from makitbuildit for £1.50 a pair). They are really nice, rigid and well balanced props imo

*Secure those feet to the frame! They are an absolute PITA and fall off all the bloomin time. I lost two while flying FPV and had no chance of finding them. Didn't even strike anything :p some use zipties, some string. Having them pop off in a crash is actually a good thing, as it absorbs some of the impact

* not sure if they are the V2 motors or not but the V1s are rubbish quality wise, and break very easily. Using stiff HQ props might have a bearing on this too but I have had one fall apart on me in mid air, with about 20 seconds of flight time on it :eek: HK eventually replaced with V2s, which are a lighter shade of green and seem far more solid. A pic of my broken one
WP_20140511_001.jpg
. If yours is as green as that I would think twice about replacing them in the event they break, try for a refund instead. RCX1804 motors are about £5.50 each from China or about £8 from at least one UK vendor I know of.

Thats it for now, I think :D
 

I don't think that motor will do, I've got a similar frame and I'm using the emax branded versions of these http://www.hobbyking.co.uk/hobbykin...peller_Combo_10_4_5_CW_CCW_UK_Warehouse_.html
They are ok but if I were starting from scratch I'd probably go for a slightly lower kv motor and use bigger 11" or 12" props

have a look through the 560 thread on rcgroups and see what they use http://www.rcgroups.com/forums/showthread.php?t=2115146
 
I don't think that motor will do, I've got a similar frame and I'm using the emax branded versions of these http://www.hobbyking.co.uk/hobbykin...peller_Combo_10_4_5_CW_CCW_UK_Warehouse_.html
They are ok but if I were starting from scratch I'd probably go for a slightly lower kv motor and use bigger 11" or 12" props

have a look through the 560 thread on rcgroups and see what they use http://www.rcgroups.com/forums/showthread.php?t=2115146

Thanks for that link, i will look through the forum.
 

As a general rule of thumb, you need a minimum 2:1 thrust to weight ratio at 100% throttle so the machine will hover at around 50%. That should give you enough headroom for manoeuvring about the place.

Weight is total wet weight of the quad including batteries, motors, gimbal, ESC's, wiring etc and you can work out the thrust by (normally) looking at manufacturers specs or elsewhere on the web.

If I had a quad that had an all up weight of 1kg, I would need 4 motors/props that could generate 500g of thrust at 100% throttle.

There's a great website called Xcoptercalc that allows you to pop in all the info and it will tell you whether or not it will fly, and a rough estimate of how long for. It used to be free, but now to get full functionality, you have to pay. It is very cheap though, and incredibly useful too!
 
Yeah those motors you listed were pretty wimpy for a quad with such a lot of room for options. Everything you add to it will increase the weight and you'll want some motors that can handle more later on as you improve it.

I've got a similar sized quad to that at 550mm and i'm using these with the hobbyking slow fly 10x4.5 props and 30a afro esc's. It's currently sat at around 1.5kg for the whole build and that includes everything pictured with a 5.0mah battery.

It hovers around 55-60% throttle and it's got a load of extra weight on there due to 9v battery for leds etc. Acceleration is pretty good, although obviously its much more agile without the gopro and using a 3.3mah battery.







 
Back
Top Bottom