R/C Blogs - RC Groups
Posted by RadMulRot | Today @ 11:44 AM | 74 Views
... for a modular tubular frames? Yes it is. After a hefty amount of prototypes and redesigns I have abandoned the idea of modular arm round tube frame. For a very simple reason really. Its too damn hard to make it strong, yet modular. OK, it goes way deeper than that, but the point stays.
Is the round tube concept dead? No. When not afraid of epoxying the parts, its a good way to make ultra light frames.
I am going to make one 4" featherweight as soon as I have some free time available.
And also a 6" freestyle frame.
Posted by Mad_angler1 | Today @ 11:09 AM | 122 Views






DJI have anounced some some Black Friday Discounts on a number of their products from the Phantom 4 to the Osmo.

The highlight for me being being £/$100 off the DJI Spark and £/$150 off the Magic Pro Fly More Combo with both getting some additional free accessories like a landing pad

These discounts are available from 22nd to 27th November from the DJI Store Direct, More info on the below af link

http://click.dji.com/AHENiEj6pDfJcwK...m=link&as=0018




Spark




Magic Pro Fly More Combo + Free Gifts

...Continue Reading
Posted by Tom Hunt | Today @ 10:49 AM | 179 Views
Ladies and Gentlemen.

How fast does your model really go? It is amazing that asking a wide variety of people at any one flying field how fast a model travels that you get such very wide spread of answers. Many of those answers that are very far off the true airspeed are from quite seasoned modelers! I am getting better at it, but depending on the size of the model and maybe the noise it is making, I still can guess quite far off!

Well, there is no need to guess anymore. if you have telemeter type RX/TX's, a way to record data (or just listen) and an airspeed sensor, none of which are that expensive anymore, you too can really find out how fast your model is going and how much power it takes to get there.

Many of you know that I am quite fond of propeller driven warbirds, and my favorite is still probably the Supermarine Spitfire. I have done some design work for Hobby King over the last 5years for their Durafly and Avios line. I have designed power systems and props for many of these models. For this dissertation I decided to use an Eflite MK14 1200mm Spitfire. Though a good looking and flying model, many here on RCgroups think it is a bit slow for a warbird in the stock 3S configuration. When I first saw one fly earlier this year, I too thought the same. Then I got to fly one and my impression did not change. It was time to own one myself and see where the problem is and how it can be fixed.

From my experience on the Durafly Mk24 spitfire (I designed the...Continue Reading
Posted by Choppahman8 | Today @ 06:10 AM | 258 Views
Listen to my instrumentals while you're building. Available on Spotify. Just search my name.
Posted by Kaikodekid | Today @ 12:39 AM | 413 Views
Started filling , painting , sanding. And then repeating again until it looks reasonable. Most of the top side looks OK now.
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Posted by Dronedude1974 | Today @ 12:26 AM | 402 Views
Well had to crash land the other day to keep from crashing into a friends truck and went with carbon fiber blades body and micro heli button aluminum head with autorotation this is my first build and it has been a great class still having issues with getting everything level but oh well if anyone has any tips or any constructive advice I am all ears one man doesn’t know everything. Thanks and happy flights
Posted by FeiJi | Yesterday @ 11:52 PM | 411 Views
I haven't done any flying or building in a long while and have never really done any 3d flying so bought this EPP kit for 15 dollars here in China that has the foam kit and hardware, I think I have everything else. It will use 2 5gram servos and one 9g. I have a couple 800mah 2S batteries but may have to buy some 3s for this one. Really light plane .
I put the foam together with some hot glue. Will leave off the decals to save some weight.
Here is the link and couple of videos (in Chinese), the flying one is pretty entertaining.
https://item.taobao.com/item.htm?spm...cket=12#detail
Posted by Jack Crossfire | Yesterday @ 11:37 PM | 425 Views
Anti stiction was implemented for this one. The trick was determining when the steering needed to change direction & kick the servo. The zero crossings of the P error were a good indicator of when the steering needed to change direction, although I & D also factored into the servo direction. The decision was made to rely on P error so the algorithm wouldn't feed back into itself. It waited until the zero crossing + a little hysteresis, then added a fixed amount to the I term to kick the servo. Using 1 degree of hysteresis & 3% for the kick completely solved the stiction problem. Not using any hysteresis or using too much kick made the steering oscillate. It was so tight, it could stay on the path for a nearly quarter mile with no steering inputs.

Also, the transmission was lubricated through the holes for the 1st time. The tape didn't stop the oil from leaking out, but hopefully it kept dirt out. Oil leaked out the bottom. It was so quiet after lubrication, you could hear the servo.


The speed was set to 10min/mile. Burned 3886mAh +4477mAh or 331mAh/mile. This was finally near the predicted range, but manely from increasing the speed. The lion can't manetain that speed for every run.
Posted by chktm | Yesterday @ 10:51 PM | 439 Views
Got some video of the KX on track for the first time
Atomik MM450 KX450F close up track action (3 min 47 sec)

Posted by brandonmoon | Yesterday @ 10:42 PM | 474 Views
Is it really worth it all?

I thought this would be a good topic for many of us to discuss and share experiences with?

Hi Folks, as many of you know. I have reviewed a few products in the RC community for other companies, off and on, and at their request/invitation, and have been involved in RC for over 30+ years. It has been a privilege and honor as well as fun to receive the products and voice my opinion and any helpful advice, tip, tricks, and etc. that may be useful to help others and the companies involved enjoy the products.

However when too many strings begin to be attached in doing that and what you can say and can't say?, as is with one I've reviewed for (Not mentioned at this time) the joy of sharing information, the excitement, and involvement looses it's luster and generally detracts from the Joy I have in RC flying and generally working with them. I have now began to scrutinize who I will review for. It's nice to receive free products, but not at the expense of being controlled in doing so.

I honestly believe that the general public that doesn't have inside info, is a consumer or loyal fan of a particular product, has no idea of what is being placed as restrictions on what and how things are said on an open forum or topic discussion and what involved that is requested of a "Reviewer" and how it gets scrutinized, scheduled, planned, arranged, controlled...etc...etc. and the envy it creates among others who used to be comrades in the community. Not...Continue Reading
Posted by kilgore_trout | Yesterday @ 10:03 PM | 552 Views
Andy Bruno.
Posted by giodude65 | Yesterday @ 07:11 PM | 541 Views
Hi Everyone
I don't know if my last thread posted or not so this might be a repeat thread.
To anyone who's interested, I'm offering my services to assemble any RC kit for a negotiable fee. I have a moderate amount of experience in assembling kits and I enjoy building RC kits more than operating them. The way this would work is that you would send me your kit, I'd assemble it, after assembly we'd negotiate the fee and the fee would be paid at this point, then the kit would be shipped back to you. Any parts not included with the kit but need for operation of the model I will purchase, these purchase will be tacked on to the fee. Shipping can also be negotiated.
Any interested parties can contact me here: iinvent4u15@gmail.com
Thanks!
Posted by Sbuoch | Yesterday @ 06:49 PM | 570 Views
Does anyone know how to properly install the Volatex X-pilot stabilizer in the ranger 757-4 without using sbus. I know there is a way to do it with or without using sbus just don't know. The couple videos they have on YouTube really don't show much as far as connecting what wires to where
Posted by UpNup | Yesterday @ 05:08 PM | 648 Views
Enjoyed spending a couple of hours today at the AMA’s National Model Aviation Museum in Muncie, Ind....Continue Reading
Posted by Jack Crossfire | Yesterday @ 03:05 PM | 724 Views
In modern times, there's no need for bodging a webcam on an optical microscope. Documentation is better achieved with a DSLR macro lens. The next step up is a cheap USB microscope. The working distance is too short on the Amscope. The angled light is dim & creates too many shadows. The incandescent lightbulb gets flaming hot. It takes too much space. Its only redeeming factors are it's stereo, it has a higher framerate, & it was free. Soldering with the lag of a USB microscope & without depth perception might be challenging.

This microscope came in handy for soldering, but never for documenting. The webcam experiment was a rite of passage. You can get decent photos by holding a phone cam exactly the right distance from the eyepiece. It won't work with a DSLR.


Webcam on a 40x microscope (2 min 49 sec)

Posted by QuadifyRC.com | Yesterday @ 02:17 PM | 792 Views
Here is my Leader 120 reviews parts 1 and 2. The Leader has become my most used quad because it is so versatile. It has the benefits of a micro (crash resistant and easier to fly in smaller and busier spots) but has power that is getting close to a 5 inch. It is such a good mix of price and performance. Review is based on version 2 with the better black motors.

Part 1: Bench review

Part 2:First flights and no brownouts
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Posted by Optimus125 | Yesterday @ 12:34 PM | 779 Views
Hey guys,
I have purchased an RMRC Cricket 200mw VTX, Quanum DIY Goggles, Crazepony 2.8mm FPV Camera, and an Immersion RC UNO5800. I am certain I have wired them properly. The VTX, RX, and goggles are receiving power. The problem is that the VRX isn't picking up anything from the VTX. I am aware that the ImmersionRC UNO only picks up 7 channels on the F-Band. My VTX has the capabilities of transmitting up to 36 channels. I am certain I am on Band-F, and I have cycled through all the channels to no avail with the VTX and VRX. (The RF mode is turned on the Cricket).

The VTX supplies 5V of power to the camera and my camera accepts anywhere between 5-12V. Could it be that my camera isn't receiving enough power, but the VTX and RX are communicating?
Does anyone know anything that can help me?
Thanks!
Posted by DutchRC | Yesterday @ 09:09 AM | 931 Views
Halloa people

soo a what?? Is this even an RC? Well yes it is, but it's more an action-sports thing this Skateboard However.. it sure is remote / radio controlled..

Link to this skateboard: Hiwheel ready to run electric skateboard

And in this topic I'll be posting several video's about this electric longboard If you have experience with this (or other) board, I offcourse welcome your input!

DutchRC - Hiwheel affordable Electric RR Skateboard! :) - Show & Tell (12 min 39 sec)


Specifications:
Length: 1 meter
Board: maple wood
Weight: 6.2 Kg
Battery: 4400mah 6S Li-ion
Max speed: 20 Km/h
Range: 12-20 Km
Max weight: 120 Kg
Posted by PeterVRC | Yesterday @ 08:32 AM | 931 Views
I bought a new HSD Viperjet, but as a KIT. That ended up being quite a DUMB idea and way to do it! Buying the Kit was AUD$200 less, but when I found out what it DOES NOT come with it showed how that "$200" was actually worth AUD$400 in value! Plus it took 8 hrs or more to transfer over all the parts that it needed!! So it 'cost' money and TIME too! In the PNF I could have used the EDF, ESC and Retracts for another aircraft and those are most of that $400 value. And not have had to transfer anything!
Boo !!!

I set it up with the 8S Jetfan again, and did the all mods to fit that and its batteries. (extended battery tray etc).

I took it out today for its Maiden and flew just like the first one - of course.
One thing I did different was coat it in SATIN WBPU, instead of Matt. The Matt comes out a Semi-Gloss really.... and the Satin comes out a High Gloss! So shiny! It looks like it is a composite (fiberglass) aircraft!! And ready to RACE !!

On the maiden flight I flew it at a 'brisk cruise' Airspeed for the most, with a handful of WOT climbs, loops, 'race past' cases.
The Flight Time was 7 minutes and 30 Seconds!!!
That is pretty awesome for a 90mm EDF... and flying quite fast! Plus with that bunch of WOT sections in it.
The Turnigy graphenes came down ambient/cool... and 3.70v per cell. After pretty well dead on 4000mAH used.

The flight was mainly at 30Amps (900W) down to 20Amps (600W) for more of it. With the 2500W+ WOT runs here and there.

The next two...Continue Reading