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Fitting a Y Lead directly to the ESC

On larger electric models we usually need to connect two LiPo’s together in Series to give us the required cell count for the model. This might be two 5S packs to make 10S for a Logo 600, or two 6S packs to make 12S for a T-Rex 700, for example.

When using standard single bullet connectors on the batteries and the ESC, this is easy to connect up, simply connect the negative lead from pack 1 to the positive lead of pack 2, and then connect the two remaining wires (one positive from pack 1 and one negative from pack 2) to the ESC, as if it were a single LiPo.

If you use one of the more popular connectors, such as EC5, then each battery has the two connectors inside a shroud. If you don’t want to cut the shroud in half to allow you to connect as if standard bullet connectors are being used, you need a way to connect these packs together in series to power the ESC.

One method is to build a Y lead harness that accepts two batteries, and ends in a single plug that can be connected to the ESC. This works fine, but the downside is more connectors in the system, and more wire being used. This adds a little weight to the model, but more importantly, further potential points of failure to the system, neither of which are a good option!

The solution is to build the Y lead harness directly onto the ESC wires.

Remembering that you need to connect the negative lead from pack 1 to the positive lead of pack 2, you can assemble the wires on the ESC using two EC5 plugs (or whichever your chosen connector type is) with the following connections:

ESC positive wire into EC5 plug 1 positive port.

ESC negative wire into EC5 plug 2 negative port.

Then add a joining wire going from EC5 plug 1 negative port to EC5 plug 2 positive port.

I usually use some 10 AWG or 12 AWG  black wire as the joining wire between the two EC5 plugs, and cover half of it in red heat shrink for an easy polarity reference. Of course, it is pretty hard to plug EC5 connectors together backwards, but I think it makes it look neater.

Please refer to the images below to see how the connectors need to be wired together.

ESC Y Lead

ESC Y Lead

ESC Y Lead

ESC Y Lead

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Posted in Real World Articles

3D Masters 2012

For the 3D Masters 2012 in Venlo this year, we decided to take a new style of trade booth. One which not only had a handful of hot selling stock items available to take away, but also making use of some technology as well.

We built up three consoles where people could place orders on our live stock website, and take advantage of a special show discount. Not only that, but have the goods delivered free as well. We thought this was a cool idea as it helps people not worry about carrying stock around with them at the show, or worrying about the security of their purchase locked in their car. This way, the people could order anything they wanted at a bargain price, and have it safely and securely delivered to their homes.

It seems a lot of people liked this idea as we were very busy the whole weekend!

We also had the infamous Midlands coffee machine on hand to dish out coffee (and Tea and Hot Chocolate), which also went down very well. We served a heck of a lot of drinks over the weekend!

The coffee machine was sat on an amazing bar, built to a high spec by the awesome Jason Platts. There were even LEDs on it so it would look totally cool for the Saturday night flying event. It was awesome!

We had a great crew of staff on hand to help people with their questions. As well as Jason, we had Mike Eddington, Pete Ayriss, Mat Watkin, Myself, Trevor and the multi-talented and multi-lingual Dennis Franckx. Dennis got renamed Bill, but he took that on the chin and soldiered on regardless.

Logo 500SE Giveaway

Logo 500SE Giveaway

We donated a lovely Logo 500 SE to the 3D Masters raffle, and the winner very kindly came by our stand to have his photo taken with us – top fella!

One of the highlights of the whole weekend was the Ninja Challenge. This involved getting all the top 3D Masters pilots to fly a cheap infra-red Twister Ninja model off the top of one of the computer stands and land it on the underside of my Logo 500SE blade. My Logo was hanging upside down from the roof of our booth, and this proved to be a big challenge for lots of awesome pilots. There will be a video of some of the highlights of the Ninja Challenge, but let me tell you it was a laugh a minute.

We had great fun over the entire weekend, with many of us losing our voices to some degree due to the amount of shouting and cheering we did. We love to support pilots!!

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Posted in Team Blog

Blade 130X first flight

Well the Blade 130X arrived yesterday at stores in the UK, so naturally we quickly charged our LiPos and took the model outside for a test flight.

Here was mine… :-)

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Posted in Team Blog, Videos

3D Ireland 2012

Team Midland and some close friends setup a road trip to Limerick in the Republic of Ireland in order to attend the 3D Ireland 2012 competition. Two of our group were judges for the competition, Jason Platts and Mat Watkin, while a further five of us were entered to compete in either the Grass Roots level, or the Experts level.

Adam Millard and Mo Abdelbasit competed in the Grass Roots group, while Mike Eddington, Pete Ayriss and myself, Rob Turnbull competed in the Experts group. We also had Dave Millard along with the group for some support, and to be a caller for both Adam and me.

The journey there and back was quite a long and tiring one, but Jason took on the driving of the mini bus that we hired, and also planned out all of the logistics of the entire journey, including ferry crossings, meeting times, etc. It all ran like clockwork of course!

The competition was held at the Shannon Model Flying Club just outside Limerick, and the site itself is a well maintained facility with a nicely mown flying area surrounded by a few natural elements that mean us 3D heli pilots get to play with mother nature – long grass, trees and such like all making for an interesting location.

The weather was a little unkind on the first day of the competition, Saturday, with a pretty strong wind blowing through, and some occasional showers thrown in there for good measure. The competing pilots were assigned a random flight order position, and  the guys running the event (Rodney Kee and Liam Broderick) managed the whole event brilliantly, calling a quick break in flying while the bad weather blew through, and getting proceedings marching on again when it was fit to do so. Tough times, but handled very well indeed. We managed to get through all of the rounds necessary on day 1 in order to find out who went through to the finals on day 2.

I managed to stove my Logo 600 in during my freestyle flight, but I had done enough to land in the top 5 putting me through to the finals where I could try again!

The finals day saw a much lighter wind from the other side of the field, but there were a few more rain shower interrupting proceedings for a bit longer each time. Once again though, the organisers kept things running when the weather allowed, and we got through all of the final fly-offs.

I am more than pleased to say that I managed to win in the Experts group. Several other pilots put on some extremely high quality flights in my opinion, and the final scores put a few of us very close. I have placed highly in several other competitions previously, but this was my first ever win, and I’m pretty pleased with it considering the calibre of pilots I flew against.

By 5pm on Sunday we had packed everything away and were ready for leaving the site, right on schedule according to Jason’s planned journey. We hit the docks in Dublin in good time for the ferry, and sailed overnight back to Holyhead, then drove through the early hours back to Midland Helicopters where everyone had initially met up. Cars were packed and people headed off on their drives back home.

The whole event was a joy to be involved with. The Irish are an extremely welcoming bunch, and Mark Broderick of Model Heli Services, who were the major sponsors of this event, was a superb host throughout the weekend. You simply couldn’t have asked for better, and we are looking forward to attending this one again next year!

Congratulations to everyone involved, and all of the pilots who flew in some testing conditions.

Check out a few of the pictures I took from the weekend.

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Posted in Team Blog

Helifest and Air Competition a resounding success
Helifest and Air Competition 2012

Helifest and Air Competition 2012

The weather was dead set against this weekend, but despite that it was an amazing event.

Grant Cooper put together a superb 3 day Helifest, which involved as much flying as the weather would allow. When it wasn’t raining, there were helicopters in the air!

The Air competition, organised by our very own Richie Clark (and I believe Mattie Lodge had a little to do with it too) was also a great success. There were worried faces through the weekend as the weather did its best to upset the flying, but we all managed to get through it, and as far as I could tell, every pilot there thoroughly enjoyed themselves.

Catering to 41 pilots in a competition is no mean feat, but these guys did a superb job. The flights were broken up into small groups and separated by demo flights from sponsors of the event. this makes it better for the judges, the pilots and the spectators, so everyone wins!

Some pilots had a little bad luck, with failures of machines and/or thumbs, myself included with a stripped main gear on my second flight (Sunday), but overall I think everyone did exceptionally well.

On a personal note, I managed to place 3rd overall in the Pro class, and I can tell you I am thrilled with that result as the field of contenders was made up of lots of the best pilots in the country!

Well done to Duncan Osbourn for winning the Pro group, and also to my fellow Team Midland pilot Adam Turner for placing 2nd – a great result for Midland helicopters!

We are already looking forward to the Air competition in 2013.

Thanks once again to Richie and Mattie for a great competition, and to Grant for a great weekend.

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Posted in Team Blog

Air competition at the Weston Park HeliFest event

This weekend is the Weston Park Model Aircraft show, and this year it will be extra special owing to the HeliFest event taking place there.

The HeliFest event includes the Air competition, which has garnered interest from all of the UKs top pilots, all the way down to the new grass roots level pilots. Massive appeal across the range of skill levels will no doubt make this an extraordinary event.

The fun starts on Friday, and the competition flights get underway on Saturday, finishing on Sunday.

Midland Helicopters Team pilots will be there in all aspects of the weekend, be that organising, competing, judging, and watching. Please feel free to come and say hello to any of us!

We look forward to seeing you all there!

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Posted in Team Blog

Charmouth April 2012 Flyin
Charmouth

Charmouth

Several of Team Midland will be heading down to the Charmouth flyin, once again organised by the AHA.

The weather is looking to be a bit intermittent with some rain and some cloudy sunshine forecast, but we’ve never let that stop us all having a great time, and catching up with friends down there.

There will be some indoor fun in the bar area at Newlands once again, so make sure you bring your mSR and mCPX indoor helis :-)

If you can make it, we’d love to see you there – please come along and say hello to any of us – we’re always glad to chat, offer help and advise if needed, or just hang out and have a laugh!

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Posted in Team Blog

Fitting a DFC Head to the T-Rex 600 Nitro

The Align T-Rex 600 DFC Head currently available is not intended for use on the Nitro T-Rex 600, but only the electric version and the T-Rex 550.

The problem being the supplied main shaft is the wrong length for use on the Nitro model.

Not that I was about to let that deter me :-)

The correct length shaft can be made by machining down a standard T-Rex 600 nitro main shaft, and drilling a new top bolt hole. The new top bolt hole should be drilled 156.5mm above the bottom bolt bole, measured from hole centres, leaving 10mm of shaft above the new top hole. Thanks to Pete Ayriss for working this out and sharing the information with me, and thanks to Noel Cross for machining the shafts for me!

Here is how I went about fitting and using the DFC head on my T-Rex 600 V2 flybarred nitro model.

Flybar head fitted on the model

Flybar head fitted on the model

First, we take the flybar head off the model, and remove the parts we are no longer going to need.
Flybar head removed

Flybar head removed

The DFC upgrade kit comes with only the parts required to upgrade the latest versions of the Align heads, so if yours is not a latest version head, with the separate pitch arms on the grips, then you will also need a new set of blade grips as well. The T-Rex 600 Nitro V2 comes with the new blade grips already.
Parts not needed

Parts not needed

The parts we will be keeping from the existing head assembly (everything on the main shaft from the mast locking collar upwards) are the swashplate, feathering spindle (and bolts and spacer shims), blade grips and blade grip bolts. That’s it!
Stuff to keep

Stuff to keep

Next we need to start building the new DFC head assembly. Here’s a picture of the DFC box.
T-Rex 600 DFC Head Upgrade Box

T-Rex 600 DFC Head Upgrade Box

And here are the box contents.
T-Rex 600 DFC Head Upgrade Box Contents

T-Rex 600 DFC Head Upgrade Box Contents

Make sure you apply grease to the thrust bearings and a little on the dampers when assembling the new head. Here we have a picture of the assembled blade grips and headblock. The DFC downlinks are not yet complete, although I found that threadlocking the metal parts in place (using green threadlock) and having them screwed all the way in was the best option here.
Head Block and Blade Grips assembled

Head Block and Blade Grips assembled

Next we will be removing the inner swash balls (all four of them) and fitting two shorter balls on opposite sides of the inner swash. This will help increase resolution. This next picture shows the existing swashplate, along with the two new swashplate balls supplied in the DFC kit. We will not be using these two new balls from the DFC kit as they are too long.
The Swashplate

The Swashplate

I used the two short balls found in the T-Rex 700 FL Linkage Ball pack – part number HN7099T.
Short links

Short links

And here is the completed head assembly ready for fitting to the model.
Complete head assembly

Complete head assembly

Once the head is fitted to the model, all that’s left to do is fit your chosen flybarless controller (a fullsize VBar in my case) and set it up!
DFC Head fitted to the model

DFC Head fitted to the model

Having flown this a lot since fitting the DFC head, I can tell you it certainly performs well. I have not yet properly crashed the model, but I have seen one that took a tumble and the bolts in the pitch arms will bend. Keep some spares on hand (when they become available!).
As it stands right now, the upgrade process is not straightforward for this specific model (T-Rex 600 Nitro V2), but I’m sure Align will resolve this quickly and make the upgrade process painless once they release a main shaft that doesn’t need to be machined to the right dimensions.
A final note… The dampers wear out pretty quickly, so replace them often to avoid issues with blade tracking in flight.
I will post a video of this model flying in the near future, so watch this space! :-)

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Posted in Team Blog

F3N Team Practice Day

This Sunday (1st April – no joke!) the newly appointed UK F3N Team met up at a nice facility near Tamworth, in order to put in some practice towards our efforts for the European Championships in Germany later this year.

Scallywag Models gave the Team exclusive use of their field and facilities for the entire day, and we made the most of a sun scorched Sunday.

Duncan Osbourn, Stuart Mott and myself (Rob Turnbull) were all present, and we all helped each other with practicing our set manoeuvres to make sure we are all flying them correctly. There’s nothing worse than practicing something only to find out you’ve been practicing it wrong!!

With such a full calendar of events going on this year, it is proving difficult to get our team together to practice together and make sure everything is moving in the right direction. We would like to do well on the European stage, and hopefully days like yesterday will be a massive help to us all.

The weather was superb all day long, and after several hours of flying, we all finished the day a little scorched by the sun.

I think we all took something good away from the day, and can continue to practice on our own, knowing that we are working on the right manoeuvres, being flown the right way.

Onwards and upwards Team GB F3N! :-)

Here are a few photos from the day – mainly of my Logo which was superb!

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Posted in Team Blog

Team Midland at the Stainburn Spring Fly-in

Team Midland’s very own Tim Procter organised yet another very successful fly-in at Stainburn Heli Club, in North Yorkshire. They always host a fantastic fly-in, and this Spring season opener was no exception.

Team Midland were well represented with 6 of our pilots making the effort to attend and have a great time flying and of course, helping others out where we can.

The main day was Sunday, and while Saturday had several pilots there flying, after the mist had mostly lifted, Sunday saw a much larger than anticipated gathering of 45 pilots all enjoying the superb weather, and the fantastic food served up by the usual suspects Jeff and Shaun. The sun shone all day while lots of flying took place.

Logo’s were in good attendance, and accompanied by a few Align models, some Raves, and even a Diablo and a Goblin showed up. There were also a couple of TDRs which had great fun attempting to get some high speed passes recorded on Tims speed gun. Dave “NHP” Whitney brought along a GPS tracking device which, when attached to the model, allowed us to accurately measure the speed that model was flying, and we managed to reach a superb 135 mph at one point. Impressive stuff!

The photos below captured just a little bit of this awesome weekend.

First, here is a video of me flying my Logo 600 3D :-)

And now some pictures…

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Posted in Team Blog, Videos