Posted by jmxp69 | Aug 05, 2020 @ 12:52 AM | 1,743 Views
How would you like a free 120w Smart LiPo Discharger?

Kacallap sent me a couple of their α12 LiPo Battery Smart Dischargers. One for review, and one to give away on my YouTube channel. So far I've discharged three batteries on the demo unit. 3s peaked at 8amps, 5s peaked at 6amps, and 6s ran steady at 5amps.

The discharger brings packs down to about 3.78v/cell and it does have a balance lead connector, so it is watching the individual cells during discharge. Once it gets down below 3.8v/cell, it reduces the discharge rate and the cells start to recover. The three packs I've run through the process all came off at about 3.83v/s and after resting, they all hit 3.84-3.85v/s.

The fans move quite a bit of air though the discharger and across the heat sink which runs longitudinally through the case. It is a fairly hefty little box indicating a robust heat sink. I took temperature measurements of the heat sink fins while discharging a 6s 5000 and saw 123F.

There are no discharge options. You connect the battery and press the go button. The discharger handles the rest. It also has an auto-shutdown feature post-discharge so you don't have to worry about your battery powering the discharger after the discharge cycle is complete.

The unit does meet the stated 120w discharge capacity, it feels robust and weighty in the hand, has a strong aluminum enclosure and a decent--but not great--backlit lcd screen. That's the one area for improvement: The screen needs to be brighter. The information displayed on the screen is useful and includes the main voltage, cell count, discharged MAH, and per cell voltage.

Overall, I'd say it's a strong entrant in the Lipo discharger market. Watch the video for more info.

U.S. buyers can find the Kacallup α12 discharger on Amazon: https://amzn.to/3khIAxk
Non-U.S. Buyers: Please contact [email protected]. Kacallup will send units directly from the factory in China.

KACALLAP α12 LiPo Smart Discharger FREE GIVEAWAY!!! - A Full 120w of Smart Discharging Awesomeness (11 min 21 sec)

Posted by old4570 | Aug 04, 2020 @ 07:52 PM | 2,129 Views
R03 Mini Stick with 18650 (1 min 24 sec)


Yeah , 5 1/2 weeks to go till I can fly the R03 Mini Stick .

I put a 6x4E prop on and CG is much better .
All that needs doing is making a hole and tightening a screw . I have 5 and a half weeks to take care off that .
Posted by racer256 | Aug 04, 2020 @ 07:14 PM | 2,134 Views
This is some pictures I actually took the other day at the store. The poor guy at Best Buy was no help.
Posted by Mirec46x | Aug 04, 2020 @ 12:42 PM | 2,558 Views
One battery flight before sunset. Just relaxing cruise around new spot
Drone Spot #6: CZ - Old army facility #fpv #drone #fpvdrone (1 min 37 sec)

Posted by GroundControlRC | Aug 04, 2020 @ 12:09 PM | 2,465 Views


Eachine Mini F4U Corsair RTF Warbird with Gyro - Review Part 2

Eachine Mini F4U Corsair
https://www.banggood.com/custlink/vvGhWygz68

Eachine Mini T-28 Trojan
https://www.banggood.com/custlink/KGDYryhlrG

Eachine Mini Mustang P51D
https://www.banggood.com/custlink/vvmDAdvdjk

Volantex Sport Cub 500
https://www.banggood.com/custlink/DmGmUiY16o

Banggood GCRC
https://www.banggood.com/custlink/GmDmQ1nVkO

Here is a link to the Video:
https://www.youtube.com/watch?v=9pk76UVONlM

The Maiden and additional flight is complete!
The is a fast, agile, aerobatic Micro Warbird ;-)
Now it's time to test some different LIPOs and get the CG adjusted as it seems slightly Nose Heavy.

Here is a link to the Playlist for the Eachine Mini F4U Corsair:
https://www.youtube.com/playlist?lis...r_ojxUtRojrGve

Here is a link to the Playlist for the Volantex Sport cub 500:
https://www.youtube.com/playlist?lis...khCQwKy5do3Bs8

Here is a link to the Playlist for the Eachine Mini P51D Mustang:
https://www.youtube.com/playlist?lis...1gOQvKdyt4mn1s

You Can Help Support Us By Using Our Affiliate Link To The Product Below. A small commission (At No Cost To You) helps us buy more items to review.

Spare Parts:

Eachine mini F4U RC Airplane Spare Part Propeller Full Set
https://www.banggood.com/Eachine-min...47791920140372

Eachine mini F4U F22 P51 RC Airplane Spare Part Transmission
https://www.banggood.com/Eachine-min...47791920140372

Eachine Mini F4U RC...Continue Reading
Posted by Geoff Potter | Aug 04, 2020 @ 09:29 AM | 2,394 Views
Was asked to make a return winch to pull back the tow up winch line for our OTime gliders , mainly cause we are all getting too old to be trudging up and down a glider field every launch. And it's an even bigger pain to have to do it for 5/6 winches when , with a bit of efficiency, we should only need one winch on the field anyway .
We came up with one that did the job , using a 12 volt Kenworth truck windscreen wiper motor matched to a Ryobi 4" angle grinder gearbox and a plastic hand casting reel mounted on it , and it worked quite well but it was destroyed in a fire where it was stored between uses .
So I had a popular model , car starter motor and when I pulled it apart , it had a 7to1 reduction planetary gearbox on the end of it . So I machined all the extra casting off it and made a housing to carry the shaft with a bearing on the gear box end and two bearings on the output end . I machined two 1"" blocks of Aluminium and put indent springs and balls with a centre shaft to lock them but still able to turn 90degees , another peice to mount the motor/ gearbox . Had to grind all the starter motor bits off the output shaft and down to 8 mill to suit the bearings I had . I bought a plastic reel and mounted it on a boss with a taper lock on the shaft much the same as one would use for aprop drive on an electric model , simple quick and easy . I bolted a 1"" square mounting leg on the bottom block and that fits into a square tube driven into...Continue Reading
Posted by g monkey | Aug 04, 2020 @ 08:43 AM | 2,362 Views
Slicer
For anyone who is not familiar with the 3d printing process, the slicer is the software that converts the CAD output (typically an .obj or .stl file) into a printer input file (.gcode). The slicer controls lots of printer parameters, such as nozzle and bed temperatures, fan speeds, layer heights, extrusion rates and head speeds - all of which can vary during the print. I've gone with Prusa's slicer (a version of the open source Slic3r) because they have profiles already set up for various filaments and nozzle types, which means many less things to worry about for initial prints. Everything is tweakable later, if you know what to tweak and what the consequence will be (I don't, so I'm going with the stock settings for now).

Filaments and Nozzles
I'm starting with PLA filament, as it is widely recommended to do so. It is regarded as the easiest material to print with and has fairly good mechanical properties. The downside is that it can degrade outdoors, it is somewhat brittle, and it has a low glass transition temperature. The plan is to get some experience with this and then move on to ColorFabb's XT (tougher than PLA) and XT-CF20 (stiffer than PLA). The later has 20% carbon fibre in the mix and requires a harder nozzle due to its abrasive nature, so I have a tungsten carbide nozzle waiting in the wings. That nozzle is 0.6mm compared to the standard 0.4mm brass nozzle that comes with the printer. The larger nozzle should also result in faster print times...Continue Reading
Posted by cuavlindy | Aug 04, 2020 @ 04:34 AM | 2,279 Views
#drone#UAVS
XunWing X4 Integrated System pix drone APM
this quad is cool
Posted by cuavlindy | Aug 04, 2020 @ 04:15 AM | 2,230 Views
CUAV X7 flight controller is really hot sale these days

https://www.aliexpress.com/item/4001283501514.html
Posted by jmxp69 | Aug 04, 2020 @ 03:25 AM | 2,150 Views
Posted by alex_nikiforov | Aug 04, 2020 @ 02:44 AM | 2,155 Views
HGLRC Forward MT VTX FPV Transmitter 5.8GHz PIT/25mW/100mW/200mW/400mW/800mW Adjustable Built-in Microphone For FPV Racing Drone


HGLRC Forward MT VTX. Полный обзор и тест мощности. (4 min 44 sec)



Links:
HGLRC Forward MT VTX
ImmersionRC RF Power Meter v2
UNI-T UT210E
Posted by Catherine Chen | Aug 04, 2020 @ 02:18 AM | 2,126 Views
Hello Everyone,

This is Catherine from Dongguan QS company.

I want to share with you our 10.0mm Banana connector to you.

1. Male&female
2. Body: Brass
3. Spring: Beryllium copper
4. Electic current: 60-180A
5. Process: Gold-plated
6.used for rc battery
7. It is mainly used in motor, battery, electro-hydraulic governor.
8.It is convenient used in socket. So it is prior to use in High-power electrical. Such as audio, receiver, enlarger.
9. It has different plastic housing protected.

Any question,Please feel free to contact me. Thank you!

Best Regards,
Catherine
Posted by old4570 | Aug 03, 2020 @ 11:36 PM | 2,327 Views
Been playing with the lay out and trying to guesstimate the CG as best as possible .

Fuse is not covered as I need finger access to the guts .

146 grams as pictured ..

If I were to build one for Flying purposes ( Not pushing a 18650 into the equation )

Than a 1103 would not be out of the question and a 300mAh 2s and 100 grams + off thrust . For 1:1 or better .

I expect the finished weight to be a little over 150 grams ..

Power to weight ? Not that great !

We will see ! Gona be a long wait till we can recreational exercise ..
Are Melbournians Prisoners now ( House arrest ) Level 4 Lock down ..
1 Hour of exercise once a day , 23 hours of house arrest .
This premier is not getting re elected .
Protecting stupid people and punishing those who do the right thing .
Should be the other way around ? Right ? Punish the guilty not the innocent ?
What The CapitalF is happening to the world ? It's all backwards , what happened after WW2 ?
Did the Nazi's win ? I bet Hitler is spinning in his grave !



Oh !!!! The LG 3500 18650 comes in at 46.5 grams
Posted by Kmot | Aug 03, 2020 @ 10:50 PM | 2,399 Views
I was thinking about my very first radio, a Cirrus 4-channel from Hobby Shack. I purchased it in 1974, for a cost of $150, plus whatever the tax rate was back then. Looking at the US Inflation Calculator, that would be $784 dollars today. Plus the tax.

4-channels. No dual rate. No expo. No servo reversing. No LCD screen. No computer. No mixing. No programming. No software. No adjustable gimbal sticks.

Yes, it cost a lot more of your hard earned money to get into RC back in the day then it does now.

Posted by Amanda BH | Aug 03, 2020 @ 09:50 PM | 2,012 Views
Unibody carbon fiber deck, nature rubber wheel
Max load 230kg (507Ib) , top speed 48km/h
UL approved fast charger, 1.3h charge time
Posted by CKD315 | Aug 03, 2020 @ 09:50 PM | 2,029 Views
Photos of a Great Planes 1.20 Super Stearman cowl I have for sale. Slight chip in the gelcoat, otherwise mint.
Posted by Amanda BH | Aug 03, 2020 @ 09:35 PM | 1,974 Views
Brotherhobby VY1504.5 2650kv/2950kv/3950kv at August discount.
Our setup suggestion for your reference
Posted by Blaze0021 | Aug 03, 2020 @ 06:58 PM | 2,185 Views
Sometimes, I just don't want to bring a bigger plane to the field. Sometimes, I just want to return to my RC roots. And for that reason today is why I chose my old UMX Beast 3D to take to the field.

Eflite UMX Beast 3D BNF Basic 6-Year Old 3S Performance Flight (4 min 40 sec)

Purchased in 2014, and the third plane I've ever flown in my fleet. Prior to the UMX Beast 3D, I flew the UMX Champ to teach me basic 3-channel flight.. and later on, the UMX F4U Corsair for 4-channel orientation. I flew those two planes for the first year of flying RC. But in the second year, I took a chance on the UMX Beast 3D. It was my first aerobatic ultra micro. I have a lot of respect for this old biplane as in my earlier RC days, there were a lot of close narrow margin saves while I was still learning its agility (it's too bad that I don't have a flight video of my earlier days with this bipe.. comparing my flights back then, to now would have been something cool to compare). Since then, I've had countless flights with this amazing biplane and it has taught me a lot. I have much to thank it for.

Modified for 3S with an Eflite BL180 2300KV Brushless Motor and GWS 5043 (5x4.3) Propeller. Powered with Eflite 3S 300mAh 30C Lipos. This Beast has been flying on 3S for the past 5 years with no issues. The wings, interplane struts, and tail surfaces have also been carbon fiber rod-reinforced to handle the long-term stress of 3S.

Extra accessories include a Shapeways 3D-Printed UMX Beast...Continue Reading