Hello everyone,

I recently purchased a second hand fpv drone along with some spares.

I am currently practising how to fly the drone on a simulator but in the meantime I thought I could take up a small side project of building a tiny slow flying rc plane with the spare motors, batteries, and props.

I currently have a few GEPRC 1103 8000KV motors as spares along with a few 2s 450mah batteries and 3" props.

I am planning on purchasing a Radiomaster ER4 PWM receiver and a few 2.5g servos to complete the kit.

I am however unable to decide on what ESC should I get from the local market and mainly on what aircraft I should build, I don't have any experience flying, I've built models in the past but have crashed all of them :p.

I would request your help in suggesting some simple small and light weight models that I can fly around my house and neighbourhood.

The weight of all the components so far is:
1x motor  = 3.5g
2x servos = 5g
1x rx     = 3g
1x batt   = 30g

Thrust produced by the motor seems to be about 60-70g.

This leaves me with quite a bit of margin for the ESC and the aircraft, typical 10A escs that I've seen are around 6-10g.

The wing loading of the aircraft has to be very low for it to be a slow flyer as I understand correctly, having a 2s battery already puts me in a disadvantage for this as I can't make the aircraft very small.


Thanks,
Nitesh

Hi Nitesh,

'Indoor' and 'neighbourhood' ( ie, Parkflyer) are entirely different.

Here's a video of 'indoor'.
When he posted this video in this forum 9 years ago, Kiran rc was a young schoolboy.
Later he went off to college and has not been active on the forum in the last 5 years.

https://www.rcindia.org/electric-planes/'2016-sweepstakes'-8-inch-ultra-light-slowflyer/msg264969/#msg264969

Regards
Iyer

And here's one from Glidiator, the 'indoor' expert in this forum:

https://www.rcindia.org/kites-trains-free-flight-and-all-others/2016-sweepstakes-rubber-powered-duration-competition-entry/msg266629/#msg266629

Thanks Iyer sir,

I was clearly mistaken in my assumption, those builds are on an entirely different level and not something I am looking to get into right now. Kudos to both Kiran RC and gladiator for building those amazing aircrafts.

I am however looking to identify what kind of rc aircraft I can build with the power train I have available. It is definitely not going to be a sub 10g aircraft.

Primary requirements for the aircraft are:
1. Should use the power train defined in the first post.
2. Should be flyable in a large badminton court/small park by a beginner as those are the areas available to me at the moment.

I was looking at the Indore Bipe that you have designed and it seems like a beautiful aircraft, it however seems to be a bit large for the power train that I have, would the Indore Bipe work if it was scaled down to a smaller size?

I was also looking at RCGroups Scratchbuilt foamies and Indoor, Microlight sections and couldn't really identify something that I could use.


PS: You might remember me as rcrcnitesh

@asperised,

I remember you as asperised, who registered for the Lunchbox contest, but didn't post an entry/video!
Perhaps the kit I sent was damaged in transit? Don't remember what happened thereafter.

Here's the Indore Bipe flown by SI174 in a backyard:

https://www.rcindia.org/beginners-zone/indore-bipe-a-model-for-newcomers/msg281908/#msg281908

I did register for the contest and I did receive the kit, fortunately it wasn't damaged during transit. I had a good amount of fun with it and later passed it on to my younger cousins, let me check they might still have it. Unfortunately, I don't have a video of it from that time. I think by the time I got around to building it the contest got over. Thanks a lot for sending the kit sir, it was a lot of fun using it.

Do you think the Indore Bipe will fly well with a 3" prop? The motor that I have can't take a bigger prop than that.

@Asperised

I have sketched out a Mini Bipe for you.
It's on two A4 size sheets.

All flying surfaces are of 3mm depron.
Fuselage of 3 layers of 5mm depron.

Dihedral 2cm each side on top wing, 1.5cm each side on bottom wing.

Hope this helps.

Regards
Iyer