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Member postings for Mark Elen

Here is a list of all the postings Mark Elen has made in our forums. Click on a thread name to jump to the thread.

Thread: Mark's TN Hawk Build
15/10/2017 00:40:57

Also, what glue did you use for the intake to intake supports? Sorry so many questions, I'm a bit out of my comfort zone with this one.

Cheers

Mark

15/10/2017 00:05:34

Hi Martin,

Many thanks for your comments, is there any chance you can post up some photos detailing the issue you are referencing? Is it the intakes that are warping?

Regards

Mark

14/10/2017 16:03:10

Hi Martin,

I'm looking forward to your updates with anticipation👍

Here are the photos of my options:

Fan 1 - this was the discounted one from HK. Pros - metal fan blades, nice flat mounting lugs. Cons - is going to be hard to install and remove once the thrust tube is in and the model finished due to the length of the housing unit, only 4 stator vanes

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Fan 2 - this is the same fan unit used by Tony - Pros, It definitely works, I don't need to go any further. Decision made.

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Now I just need to sort out how to make them mounting lugs straight. I was thinking about making a small spacer plate to go inbetween the two halves on each side.

Cheers

Mark

 

Edited By Mark Elen on 14/10/2017 16:03:44

13/10/2017 19:15:37

Hi Gary,

Many thanks for your comments, I will do that when I have a chance, I ordered this fan unit while it was reduced in price at HobbyKing, managed to pick it up for £56.

The HK specs are 3200w Continuous, 3500W Burst for 10 seconds, Max thrust 4.6KG

I'm not dead set on this fan, because of the length of the tube on it is going to make lining up and fitting the thrust tube to it difficult and also it only has 4 stator vanes. I do like the fact that the fan itself is Ali.

When the fan turned up and I realised the tube issue, I then ordered the same fan as Tony is using from HKs Global Warehouse, it has turned up, but minus any fixing hardware. The fan itself is plastic. I ordered a 90mm fixing bracket set from TurbinesRC in France, it sort of fits, but the seats where it will bolt to the bearers isn't going to allow it to fit flat. (I'm not going to be able to post any photos of this, this week)

So you can see, I'm in a bit of a quandary which fan to fit, I had just about decided on the first one, but maybe I need to test them both and then decide. Thinking about it, I could make up some spacer plates for 'fan 2' to make the bracket fit better.

When I get a chance, I'll post up the photos.

Thanks once again for posting, it has got me thinking again

Cheers

Mark

Thread: Mark's Ballerina MK1
13/10/2017 10:55:59

Thanks Peter,

I've got to admit that I did think about doing it that way and I don't like adding connectors for the sake of adding connectors. My reasoning is that should one of the servos fail, it will be a pretty easy solderless job to replace it, even if the excess cable gets stuffed in the servo box. Plus, I wanted to prove the concept as the plan that I'm formulating for the next build involves 4 servos in the wing, plus 2 retracts, I'm hoping to achieve this with 2 pairs of multiplex connectors, one set green and one set red. We will see how that works out in the fullness of time😁

Regards

Mark

13/10/2017 10:04:50

Thanks Peter👍

I've been plodding along this morning, but now I've got to go to work😞 Got the wing almost finished, both servo boxes are now covered, servos in and extension lead finished and tested, just need to hinge the ailerons and make up the control rods and it is done.

I had already shortened the servo leads so that there wasn't a load of lead to loose in the servo box, the extensions got pushed through the tubes with the pins sticking out of the connectors before the connector plate was pushed onto them, as the connector plate was too big to fit through the tubes.

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Cheers

Mark

12/10/2017 22:17:16

Hi Geoff,

Many thanks for your kind comments. Your ballerina looks great👍 We have yet to see how mine flys, it might be all show and no go😂

I've been pottering tonight, a little here and a little there. Made up one of the extension lead ends and covered one of the servo boxes.

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Cheers

Mark

Thread: Mark's TN Hawk Build
12/10/2017 20:00:21

Hi Gary,

Sorry, I took the photo after I had shut it all down showing the max amps. Calculating it, using the voltage shown, it works out at 2,207 Watts

I'm not sure if this is good or bad.

Cheers

Mark

Thread: Unable to flash X6R with EU LBT firmware
12/10/2017 19:18:42

Mine has a sticker on the back saying it conforms to CE ETSI 300 328.

I upgraded to EU LBT firmware when it was available and did the second update to it when it became available soon after.

All I can say is that since I've been using it, it has been rock solid. I range test my kit before first use and every 3 or 4 flying sessions.

I'm going to be using it in the hawk that I'm building, if I had the slightest concern about its reliability, I would be going out to buy something else. Up to now it has performed faultlessly.

To me, it's not that it's a cheap radio (and it certainly isn't the best looking), it's the programming possibilities and the easy integration of sensors - the hawk is going to be running 2 X 4S batteries in series, I've got a pair of Lipo sensors and will be programming them up to show on telemetry the lowest cell voltage of both packs, it will also call this out to me when it's getting low.

You can probably tell that I like my Tanaris.

Cheers

Mark

12/10/2017 17:48:25

Sorry Bob,

The only reason I turned on the external module, is because that was what the video I was following on youtube at the time said. It was at the time of the initial EU LBT firmware update many moons ago.

Regards

Mark

12/10/2017 12:08:21

Hi Bob,

I stand corrected, just had another go without turning on the external module and yes, sure enough as soon as you tell it to flash the external module, it powers up the receiver, flashes the firmware then powers down the receiver.

Cheers

Mark

12/10/2017 11:56:07

Hi Bob,

I found that the receiver will not power up if you are just using the lead out of the pins on the back of the tanaris to the s-port on the receiver without the external module on. The reason I first updated the firmware on my Tanaris was because the older versions did not allow you to flash receivers like this, I can't remember which version it changed.

Cheers

Mark

Edited By Mark Elen on 12/10/2017 12:00:51

12/10/2017 11:52:17

Hi John,

I've just been and flashed one of my spare receivers. You do not need to be in boot loader mode to do it (well not on 2.2 anyway)

Plug in your lead, turn on the external module, then navigate to your firmware on the SD card and flash it from there. I made a note on my sheet, as that caught me out the first time.

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Hope that helps

Cheers

Mark

12/10/2017 11:33:30

Hi John,

Have you turned on the external module?

Cheers

Mark

Thread: Mark's TN Hawk Build
12/10/2017 09:39:15

This morning I have finished off the programming and initial testing of the fan for now. I've got to say that it was pretty painless. Just plugged the programming board in, changed from Heli to Fixed Wing, changed the start up time from 15s down to the lowest it would go (4s)

One thing that threw me was the ESC won't operate with the programming board plugged in, but no issue, powered down, removed the board, powered back up and sucess. It will now spin up from a low throttle and responds as expected through the range.

The photo below shows it pulling 72.6 Amps at full chat, but this was with the lipos at 3.85v per cell storage voltage.

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That's now achieved what I wanted, it's proved the power train, I'm happy with the results and can now get on with one of the most satisfying parts that I find of any build, all the thinking that goes on beforehand ironing all of the details out before any wood hits the board.

I've pretty much decided to follow Martin's idea of using slim wing servos for the elevators and for all of the wing servos, that way, only the servo arms will be stuck out and on view. The rudder will follow TN's Hawk and be closed loop with the servo mounted above and to one side of the fan.

Cheers

Mark

11/10/2017 22:37:50

I finally had the courage to connect it all up tonight and have a little play, unfortunately, I had forgotten that the ESC comes default as Heli and it has a 'ramp up' time. No wonder nothing happens until half throttle then it just accelerates away. At least I can now label up the wiring (I had it running backwards - just swapped two of the 3 outputs over) program it up tomorrow and have a proper test of it.

Forgot to say, I've decided to use AS150 connectors for the power train and these were soldered on to the lipos when they arrived a few weeks ago. I've also made up a link cable to connect POS to Neg on the lipos, but, since doing that, I've got a multi balance board for the iCharger that will allow me to charge these 2 as if it is one 8 cell in series, so I may just remove the link and go male on one neg to female on one POS.

It sounds Awesome.

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Cheers

Mark

11/10/2017 18:49:19

Hi all,

This post is really just a place holder and start of my Build Log of the TN Hawk. Being a bit of a chicken when it comes to making a load of different sized ribs and also there being jig tabs, I've opted for the CNC pack along with the Vac form set, TN's plan and TN's Retracts

For the fan, I've gone with the 1000kv 8s jobbie from HK along with the HobbyWing 130A onto Speed Controller - we will see how that combo works out. The fan spec says 4.6KG at 110A

The speed controller specs say 130A continuous, 160A burst.

I've also got a turnigy 5A HV BEC, I'm not 100% yet about this, as I note Tony went with a separate Battery (at least the plan shows it) for the receiver.

Anyway, a build log isn't a build log without photos:

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In that last one I've got the fan bolted onto the workmate ready to commence testing.

Looking forward to this, but I'm just playing with bits as the Ballerina has to be finished before I start the build proper on this.

Cheers

Mark

Thread: Wing tip shaping
11/10/2017 10:10:54

Hi Bill,

I don't know about others, but I use my build blogs as both a record for myself and to ask general questions regarding the build. A lot of my posts I feel are of no interest to anyone else, but there is always someone watching and willing to both help with suggestions or offer words of encouragement.

I'm watching your build thread with interest👍

I would run a sanding block along that trailing edge and profile the end of that wingtip to the same angle as the trailing edge (removing the step) I did look back at my Ballerina build log as I had exactly the same issue, but I didn't get a clear enough photo to show, I'll have a look later and see if I can post up a photo that clarifies now it's covered.

Don't get put off and not post up, the whole point of a forum is for just this purpose.

Cheers

Mark

Thread: what is? Isopropyl Alcohol
10/10/2017 20:42:56

Hi Geoff,

A lot of nail varnish remover is now acetone free, I was stuck a few weeks ago, pure acetone will dissolve hardened expanding foam and some kind person had expanding foamed some ducts that I needed to remove some cables from, the shop assistant looked at me funny when I was asking for proper nail varnish remover with acetone in😂

The acetone free stuff doesn't attack anything...we'll certainly not dried expanding foam😂

I use IPA at work for cleaning fibre optic cables, buy it in 1litre or 5 litre bottles. It's great for cleaning lots of things.

Cheers

Mark

Thread: Mark's Ballerina MK1
09/10/2017 20:25:55

Hi Gents,

Many thanks for your generous comments.👍

There is around 10 hours work there. After lots of ideas and at one point deciding not to do the scallops, a plan was formulated and drawn out using the pencil in the circle cutter. The blue was pretty easy to cut out, the White was a little harder as I couldn't see the circle centres through the covering. I ended up trimming the white back to reveal the centres then it became much easier. I just used the circle cutter with the point straight through the plan and into my plasterboard building board.

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I'm still amazed that it all lined up so well. One or two of the scallops are not exactly central on the ribs, but they are pretty close.

I'm glad now that I decided to go have a go at this, it has pushed me to learn something new and for that, Peter, I am most grateful👍

Cheers

Mark

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