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DB Auster electric conversion

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Chris Stevenson07/08/2015 07:26:06
32 forum posts
3 photos

I am planning my winter build project and have settled on the Auster as there are lots of build blogs to follow. I cannot find any with electric power and am looking for help in how to provide access for battery changes. My previous building experiences have all been "as per plan" so unsure how to change it. I have read the posts on BEB's Chipmunk conversion and something along those lines seems feasible.

Has anyone been there and done it already?

Phil 907/08/2015 08:31:28
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4278 forum posts
218 photos

this might help with motor selection **LINK** so it has been thought about by some one at least. Looking at photos of finished models I can see your problem as there is not an obvious area for a battery hatch. it looks to me it may have to go in through the bottom

Try an email to DB sport and scale that might have some info

 

good luck with the project

Edited By Phil 9 on 07/08/2015 08:35:36

Dave Hopkin07/08/2015 08:42:49
3672 forum posts
294 photos

Might also be worth looking at how comparable sized Cubs have accomodated the battery as they are quite a similar shape nose and cabin.......

Tony Bennett07/08/2015 08:43:54
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5050 forum posts
129 photos

can you not make a top opening hatch something like this.

Chris Stevenson07/08/2015 08:48:16
32 forum posts
3 photos

Thanks Phil, I have emailed Richard at DB and he is aware that others have converted the Auster but doesn't know how they overcame the access issue. He suggested the forum so hopefully someone will have done it. I think bottom access is probably best.

Chris Stevenson07/08/2015 08:53:51
32 forum posts
3 photos

I could do something similar Tony and make a balsa cowl instead of the one supplied. Thanks for the suggestion and photo.

Peter Groves17/12/2015 22:28:08
1 forum posts

Hi, having just received my Auster kit from DB I have been studying the same issues. My thoughts, at the moment, are to omit the existing fuel tank holder and replace it with a battery box angled from the bottom ( access through a hatch in the fibre glass cowl, and angled upwards towards the centre of the cockpit at approx 45 degrees and construct a battery box. The 6 cell battery could be located on a ply slider as in my Wots Wot. It would mean enlarging the bottom access through the first former to give clearance but a strengthening rib either side should compensate. Any opinions gratefully received, PS I intend using possibly an E flyte 60

Allan Bennett18/12/2015 08:21:56
1478 forum posts
38 photos

With my 1/5 scale DB Cub I've installed a battery box which is accessed through the front of the cowl -- say roughly where the rectangular holes are in Tony Bennett's post above -- and goes back horizontally through the firewall to give enough length for my 3S 3900mAh LiPo (originally two 7-cell NiMh packs in series). I cut an access hatch in the fibreglass cowl, and hinged it.

Since access to the battery is impeded by the prop, I've installed a safety plug in the side of the cowl so I can isolate the battery before trying to open the hatch.

Edit: Here's a photo.

cub battery bay 001.jpg

Edited By Allan Bennett on 18/12/2015 08:24:24

ascot01/01/2019 09:03:42
28 forum posts

What engine do you intend to use and battery size I am contemplating a 50 and 4cell but will still have to do some research.

What mod did you do to mount the motor

Chris Stevenson01/01/2019 14:20:01
32 forum posts
3 photos

I’m sorry but I am unable to help as I decided to stick with ic and fitted an OS 95 and didn’t pursue the electric route.

I would be interested to hear how it goes if you do go electric.

Percy Verance01/01/2019 16:47:00
avatar
7560 forum posts
145 photos

Be aware the E Flite 60 motor is sold in several kv ratings. My own ( a 470kv version) is stated as being capable of swinging a 15x8 on 6 cells. More than enough for a DB Auster I'd have thought. A 15x8 is also the recommended prop for a Laser 100........

ascot

A .50 size electric motor and 4 cells will need to work hard to fly a DB Cub.......I'd suggest you may need some excess ooomph.....

 

Edited By Percy Verance on 01/01/2019 16:51:19

kc01/01/2019 17:05:33
5819 forum posts
167 photos

The DB website has a link to 4Max for a suitable electric setup. Mentions a motor mount too.

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