Coming back to the hobby, It's been so long!

Coersum

Member
Hello,

I have not done RC (other than toys here and there) in nearly 20 years... My father used to build balsa planes, so did I a bit, some boats, gas cars etc...Later on I used to go to the expo they have in Paris every years). Things have changed so much and my daughters are getting older (5 & 7) and maybe time to get back to it... but with a small budget (have to be able to present a plan of attack to my wife for the green light, it's good for the kids for eye/hand coordination and good bonding time right ?)

I have been looking at parts and tons of videos from flitetest, I have a long list of question but most of it I can find out doing some research.. the part where it gets confusing is for motor/esc/battery relationship...

I am planning on starting with the 3 swappables (got lots of foam boards from other craft projects), I am getting a list of parts ready for a post to ask opinions as I am very new to the electric R/C (back then it was either too expensive or too heavy).

Is the "Electric Aircraft" forum is good spot to post something like that ?
 

French

Construire Voler S'écraser Répéter
Welcome! No need to post new forum threads, we can help here.

When you say the 3-pack, I assume you mean the nutball, delta, and FT flyer - https://store.flitetest.com/3-pack-swappable-speed-build-kit/
If so, people generally stay with the "power pack B." That's a combo of motor, props, ESC, and servos you would need. Flite Test rally tries to make it easy. The power pack B can be found here - https://store.flitetest.com/power-pack-b-fixed-wing-small/

Generally speaking, the aircraft size and weight (including the battery) will determine what sized motor and prop (thrust) you will need for a project. Then the motor and props power will determine the size of the ESC needed. Lastly, the battery (capacity) will determine your flight time (however there is a point of diminishing returns when more weight hurts more than the extra capacity.)
 

Coersum

Member
Hi again,

@French: yes this is what I meant, I plan on scratch building them, I already have everything I need to build them, but trying to figure the gear to go on it.

I had to redo my list as I saved it into hobbyking's cart but got reset. I am trying to keep it from the USA warehouse so it ships a bit quicker (only a few dollars cheaper from global warehouse but higher shipping) and all under $100 while keeping it with good quality/reviews.

Controller/receiver:
Hobby King 2.4Ghz 6Ch Tx & Rx V2 (Mode 2) $29.99
https://hobbyking.com/en_us/hobby-king-2-4ghz-6ch-tx-rx-v2-mode-2.html

Turnigy™ TG9e Eco Micro Servo 1.5kg / 0.10sec / 9g : $2.59 (x2 since going for 3 channel conrtol at first)
https://hobbyking.com/en_us/turnigytm-tg9e-eco-micro-servo-1-5kg-0-10sec-9g.html?wrh_pdp=2

15cm Servo Lead Extention (JR) with hook 26AWG (5pcs/bag): $2.09
https://hobbyking.com/en_us/15cm-servo-lead-extention-jr-with-hook-26awg-5pcs-bag.html

K&S Precision Metals Piano Wire 0.062" x 36" (Qty 1): $0.84
https://hobbyking.com/en_us/36-music-wire-062.html

Linkage Stopper D2.1mm (10sets): $1.37
https://hobbyking.com/en_us/linkage-stopper-d2-1mm-10sets.html

Accucell S60 AC Charger (US Plug) $31.15
https://hobbyking.com/en_us/accuell-s60-ac-charger-us-plug.html
From what I read/saw in videos, I believe it's the best type, charges while checking individual cell since both XT60 (via adapter) and balance wires are connected.

Now that's the general stuff, simple... the part where I have a problem is figuring motor/prop/esc/battery since they're all related.

For the rest (motor/prop/esc/battery):

D2822/14 Brushless Outrunner 1450kv $9.09
https://hobbyking.com/en_us/d2822-14-brushless-outrunner-1450kv.html

using

GWS Style Slowfly Propeller 8x4.5 Black (CCW) (4pcs) $2.60
https://hobbyking.com/en_us/gws-style-slowfly-propeller-8x4-5-black-ccw-4pcs.html?wrh_pdp=2

or

GWS Style Slowfly Propeller 8x4.5 Black (CW) (4pcs): $2.60
https://hobbyking.com/en_us/gws-style-slowfly-propeller-8x4-5-black-cw-4pcs.html

with

Turnigy TY-P1 25Amp HEXFET Brushless Speed Controller: $9.99
https://hobbyking.com/en_us/turnigy-ty-p1-25amp-hexfet-brushless-speed-controller.html
(42g including XT60 and bullet connectors)

and

Turnigy nano-tech 1000mah 2S 25~50C Lipo Pack $6.12
https://hobbyking.com/en_us/turnigy-nano-tech-1000mah-2s-25-50c-lipo-pack.html

I may be way off for motor/battery/prop, trying to make it a slow flyer maximizing flying time. Any idea of what mah battery I could go up to without starting to see diminishing returns because of weight and still being able to fly slow-ish ? or what motor/prop/battery would work better?

Thank you
 
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JimCR120

Got Lobstah?
Site Moderator
Hello Coersum.
Since you have already started a general intro thread here you can continue the general discussion here but when you get into a specific build I would recommend a new thread in the appropriate section.

How nice you are jumping right in with some basic and fun builds. It's always better with people. Many kids are getting involved in STEM programs that stimulate thinking/problem solving centered aound unsing science, technology, engineering, and math. Since you, the dad, can do this with your daughters they can grow in these areas, learn problem solving, and the best thing have a special time with you. I did a snow ball project with my great niece and she loved it. Interestingly enough she seems more interested in building and decorating the plane than flying it. When she speaks of playing with dolls, I suggest designating a Paratrooper Barbie I'd be happy to drop from a plane.

The hardest part might be trying to keep them focused. Kids these days and that age group can be easily distracted. Be flexible so you can keep it a family thing which will be pay off in the long run.

It looks like you've compiled a good shopping list comparable to Power Pack B. Have you ordered yet? Which build will be your first?

Welcome to the forum.
—Jim
 

Coersum

Member
Hi and thank you for the reply.

I haven't ordered yet, usually I try to do a lot of research, comparisons reading and watching when ordering something like that (or when building a new pc), sometimes for a week or so (I'm also very frugal since on a budget). I am modifying the list right now to get something more final. Looked some more at lipo + charging + safety as I haven't used those much and other misc things.

As far as my daughters, I think they have the average attention span too (which is not long), I decided to build the mini sparrow as test build to keep as chuck glider, they checked on the build as it went and were more than happy to help whenever I needed something held in place or anything they could do.... I am planning on making the ft flyer next (to put electronics in) as I heard the nutball can be a bit more unforgiving and the tiny trainer is a lot more work (when it crash) to repair or remake (might make the other 2 shortly after too)

I do have a bid on a GoolRC GC6 (close of the flysky FS-IS6) from which I read/watched good reviews.

My problem right now is trying to find an esc and motor with connectors already on them as I'd prefer not to have to solder them but will if I have to. The motor and esc in my list above have them but the weight of the esc bugs me (42g) as I like to build light.
 

Coersum

Member
Found some post of people using them but wondering if this kind of package would work for the Flyer:

Combo GoolRC A2212 1000KV brushless with 30A and some 1045 props not sure how it compares to the one I have up in the list or the Emaxx 2822 1200kv recommended in the B pack.

Trying to find something that's going to do well for 2S 500-1000mah battery

http://www.ebay.com/itm/GoolRC-A221...epid=0&hash=item569244e5d5:g:aDwAAOSwA3dYW3Tm

It's a cheap combo, maybe different props ? Would the ones I have listed up in my first post work ? (GWS Style Slowfly Propeller 8x4.5 Black (CCW) (4pcs))

I think I'm going to start a thread, posting more info from ecalc to compare the diff motors that are in my range and are available too, unless I find an answer on my own soon lol
 

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Coersum

Member
Update:

I was able to get all my electronic parts ordered, the list changed because I found and decided to follow this man's youtube serie on the FT flyer (amazingly detailed, great to watch on top of FT's videos). I got both 9x4.7SF and 10x4.7SF props because I figured I could use either or depending on weight, I could go lower now to think of it since the AUW is so low).

I used an Emax CF2205 1300kv with 10A Sky Power esc from Heads Up RC. A 850mah 2S nano tech battery + 9x4.7SF prop from Hobby King and the GoodRC GC6 (clone of Flysky FS-I6 I believe).

20170714_184040.jpg 20170717_202317.jpg 20170714_184108.jpg

However! Once I had everything installed in the ft flyer (except for prop), I still had to add 50-60gr of dead weight to balance it... Since I was planning on making a nutball, I decided to make it during the weekend (done in a couple hours).

20170717_195522.jpg
Shown here after 1 and half battery flown on it (few battle scars from trees and other little crash, but nothing bad).

I was still waiting on a few things (props mainly at that time) to do my maiden so I made 25% nutball chuck gliders (about 10" wing span and octagon since I didn't want to cut rounds lol) for/with my daughters and flew those over the weekend awaiting my props on monday.

20170717_195501.jpg
One with and one without KFm2 step, didn't change anything except add weight, both flew pretty well and my daughters love them (they have a small version of daddy's plane).

I got my controller earlier so I spent about an hour on the simulator and Monday finally was here. As soon as I got my props, I installed everything on the nutball, charged my batteries (charger came in same time) and went out. Perfect day, 2 to 5 mph wind, I could barely feel it. I first did a small chuck in the back of the house downhill with a little bit of throttle to test it and it went ok so we went to the side of our house, a space about 150 ft x 60 ft with trees all around and did my maiden.

First toss, about 50% throttle, my Nutball went left and down, I adjusted for it manually (can't do trims while flying yet lol)...I kept it in the air for about 20 seconds and then had a little crash but since I was flying low and slow, nothing bad, just the prop saver doing its job.

About 15 mins later and a dozen small flight, getting better and better slowly and finally getting the trimming done (about 3/4 trim to the right and some up trim), I was able keep it in the air a few minutes at a time and even did a loop (was nice and straight and felt courageous). The only time I ever went close to full power was for the loops (did 2 but one was a bit low and ended with a slide onto the grass), other than that I never went full power, most time I could stay easily at half throttle and fly well. I didn't have the best of space to fly but had fun none less, having to turn so often in a small space is good practice I guess. After all that, all that was broken was 1 prop saver o-ring, and lost one of the motor mount screws (the one holding the shalf to the mount) but had spares that kept me flying.

All in all, it was amazing, I was getting eaten up by mosquitoes but just couldn't stop, I did check the battery here and there and stopped at around 3.7v on each cell (should I stop earlier?). I can't wait to fly in a bigger space and contacted my local flyer club to see about joining them so I can use the field and actually meet others flying.

AUW: 238gr (8.4oz) (including battery and about 18gr of clay against the nose inside the power pod).

I also used 3D printed firewall and control horns (modified from versions I found on thingiverse)
Untitled-1.jpg

THANK YOU ALL!

When I was young, my father used to fly big gas planes, which I was never able to touch but loved so much, at 14, my parents died in a car accident and I went to live with aunt/uncle.. I always loved everything about flying and RC so a few years later, I put together a balsa glider which I proceeded to crash within 10 second of its maiden and never touched again. I had no help, no internet (25 years ago in france) and no support or resources like we have nowadays.
In my adult life, I played around with toy quads, always wanting to fly till a few weeks ago when I discovered Flite Test while looking at a youtube video of a 3D printed motor.

So I want to thank FLITE TEST and everybody on this forum.. over the last 3-4 weeks I have watch around 100-200 videos from flite tests and others, read dozens and dozens of posts both here and rcgroups, learned about everything I needed to get ready and all the information about getting started. I plan on trying to buddy box my daughters one day and possibly fly together...
 
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