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Jul 05, 2019, 06:28 AM
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Eachine reddevil review and Vs sailfly X. Must do mods!!


First up here is a discount code and affiliate product link ( 12% saving and no extra cost to you and helps me out too )
Reddevil https://bit.ly/2Rx3HOa
Code BGred12

Sailfly -x https://bit.ly/2Z5yeFa

Full review and I will add things later on as I discover new information experiences with this quad.
Video bench review
Eachine reddevil bench view vs sailfly (14 min 20 sec)

More Flight videos at the end.
Eachine reddevil 2nd flight at the park (6 min 2 sec)



It is a very fast and light quad with good flight times and not going to bother anyone and for me this is the main selling point .

Comes in a nice case with spare props and some tools.
Needs the vtx antenna fixing in place with zip ties so make sure you do that as per my pictures later on!!

It is very similar to the sailfly and uses same flight controller and motor and similar frame and props.( But not quite )

The differences are
Advantages.
1 camera is eos2 16/9 ( I asked them to consider making it 4/3 in later models ) this gives brighter colours and easier to see where I'm going.
2 canopy has adjustable camera angle
3 vtx is 200mw capable(Vs 25mw for sailfly)
4 frame is stronger and doesn't look like it will break like some people experiences with the sailfly
5 props are stiffer so give less vibrations allowing more power to actually be used.
6 comes in a useful carry case( sailfly just comes in a cardboard box )

Disadvantages
1 camera is eos2 16/9 gives funny colours sometimes and can suffer jello if props aren't balanced.(;however it's pretty good because the props are good and there is foam already under the canopy to dampen vibrations. )
2 the plugs and sockets all stick down through the frame which I think might be a problem in a hard crash but no reports of that happening yet and I've crashed it without damage so far.

My impressions
It is actually same speed but maybe slightly faster due to those props than the sailfly X but feels slower due tongue camera field of view so I found 3s lipo to be better than 2s for this reason.
I didn't like the camera at first but soon got used to it and then found I could easily see better where I was going and hit gaps with ease.
The jello at high throttle is not too bad but it is there and didn't bother me too much , I had the trashcan before and this is no where near as bad, it's quite flyable as it is and I could probably reduce it some more with foam maybe.
I really didn't like the battery holder especially the way it interferes with the cables and so I took that off and used rubber bands instead.
Over all I think it's worth getting this over the sailfly , even if you don't like the camera you could swap it out for something better later on for not much money.
Tune was very good, it flies perfectly ok with no washout or any bad tendancies.

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So with that code it's about same price too..
Reddevil https://bit.ly/2Rx3HOa
Code BGred12



Some flight videos.

Eachine reddevil flying a different area of park ( gaps and trees ), different goggles and dvr (5 min 53 sec)


Useful info additions.

1 rssi warnings and range
Rssi levels are not same as other frsky rxs, the critical warning is set at 37 in the the txs but these boards don't lose signal until rssi is well bellow 25 so range is actually much further than people think.
You can change the rssi warnings in the transmitter and lower them in the telemtry section.
I strongly suggest a range test on every new reciever / quad to establish the rssi level at which is failsafes.

2 raising stack by turning around the grommets so the thicker part is at the bottom helps with battery clearance on those connectors.

3 there are 3d printed designs for a new canopy .... Too many to list but I'll wait and see which is more popular and post it later .

spares
Frame https://bit.ly/2XEjQmn
Kit with frame canopy and various fixings https://bit.ly/2S5FO0i
Props https://bit.ly/2NKerdy
Last edited by nigelsheffield; Jul 11, 2019 at 02:23 AM.
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Jul 05, 2019, 06:56 AM
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Eachine reddevil freestyle at the park. (4 min 53 sec)


Eachine reddevil maiden on 3s (4 min 41 sec)



And to compare similar flight with sailfly
Happymodel sailfly X on 2s 300mah freestyle park (5 min 19 sec)
Jul 05, 2019, 12:29 PM
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I think these props are defo worth upgrading to at some point as they are super smooth on my other builds.
https://bit.ly/2KZLf00
And well suited to this exact size and motor .

Edit make sure to limit throttle as they are quite hungry on the power though.
Last edited by nigelsheffield; Jul 05, 2019 at 12:40 PM.
Jul 08, 2019, 11:41 AM
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Thread OP
Added this video to first post , recorded on different goggles and DVR and flown in a different area which some improvement in my flying hopefully as I get used to this.
Eachine reddevil flying a different area of park ( gaps and trees ), different goggles and dvr (5 min 53 sec)
Jul 09, 2019, 09:17 AM
nigelsheffield's Avatar
Thread OP
Added this info to first post.

1 rssi warnings and range
Rssi levels are not same as other frsky rxs, the critical warning is set at 37 in the the txs but these boards don't lose signal until rssi is well bellow 25 so range is actually much further than people think.
You can change the rssi warnings in the transmitter and lower them in the telemtry section.
I strongly suggest a range test on every new reciever / quad to establish the rssi level at which is failsafes.
Jul 10, 2019, 01:43 AM
nigelsheffield's Avatar
Thread OP
spares
Frame https://bit.ly/2XEjQmn
Kit with frame canopy and various fixings https://bit.ly/2S5FO0i
Props https://bit.ly/2NKerdy
Jul 11, 2019, 02:26 AM
nigelsheffield's Avatar
Thread OP
More updates to first post added.
2 raising stack by turning around the grommets so the thicker part is at the bottom helps with battery clearance on those connectors.

3 there are 3d printed designs for a new canopy .... Too many to list but I'll wait and see which is more popular and post it later .


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