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Member postings for Steve J

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

Thread: Is this Power Supply Suitable?
03/08/2020 07:41:55
Posted by David Davis on 02/08/2020 20:04:47:

Would this PSU Be suitable?

I am a bit shocked to see a builder such as yourself going for an Almost Ready To Use power supply . A proper aeromodeller would be hacking a refurbished HP server power supply.

Are you planning to make a nice hardwood box with some 4mm posts on the front for it?

Edited By Steve J on 03/08/2020 07:43:31

Thread: Downloading updates
02/08/2020 23:23:33

Go to and create an account.

Register your two DX6's. You will need the serial numbers. If you have an SD card in the slot when you power up, the transmitter should put a file on the card with the serial number. If it doesn't you can find the serial number on the third page of the System Settings screen.

For each DX6 goto Download Updates on the My Products page on and click on the download button. This will give you an SPMTX.SAX file. Put this on the SD card and power up the transmitter with it in the slot.

The SPMTX.SAX files are specific to the transmitter.

Use a decent SD card. If in doubt reformat the SD card with the tool that the SD association provide.

Thread: Peeling stickers on foam models
01/08/2020 19:03:44

UHU Por?

Thread: Is/could this be an expansion of the surveillance state
01/08/2020 18:58:00
Posted by Denis Watkins on 01/08/2020 18:03:53:

They do look smart though

Just so long as they don't do what the RCMP managed to do.


01/08/2020 14:43:39
Posted by Mike T on 01/08/2020 14:28:16:
I'm just disappointed that the drone is produced in Austria. Nothing against Austria, but don't we have a drone industry of our own to support?

If memory serves, the UAV used in the channel out of Lydd is Portuguese (the TDA for that seems to have gone).

The one used for medical delivery trials in Scotland is German.

01/08/2020 12:28:37


"The Operating Authority for the TDA areas EG D398K-R will be RAF Valley. A Danger Area Activity Information Service (DAAIS) will be available during ATC hours of operation from Valley Radar on 125.225 MHz and telephone number 01407-762241 ext. 7461."

Thread: MFA Power Panel
01/08/2020 09:31:12

Posted by Derek Marpole on 31/07/2020 17:00:31:

... should I invest in a new power box ...

If you use the facilities on the panel, then yes.

I only use the pump on mine, so if it died, I would probably sort out a standalone pump that I could strap to a fuel container.

Thread: Battery connectors
31/07/2020 22:12:33
Posted by john davidson 1 on 31/07/2020 21:51:12:

No one has answered the question about small models...

Two of us have mentioned XT30's. The Deans micro is another nice little connector.

Thread: LiPo replacement for Spektrum Tx Li-Ion - care and maintenance?
31/07/2020 22:09:25

Posted by Keith Miles 2 on 31/07/2020 18:04:00:

... at one time a 500mah NiCd pack was common in a 4-servo set up in an average sized model ... My Rx packs were never less than 4.8v before recharging.

1.2V/cell off load is a long way down a AA NiCd discharge curve.

... As for higher capacity cells, it is also my understanding that there is a greater voltage drop at a given current the higher the capacity of NiMh/NiCd cells of a given physical size e.g. AA 2000mah versus AA 1000mah...

I suggest checking the datasheets.

If your seven servo (flaps or retracts?) model with the 1000mAh battery stops responding and goes in, please don't blame the radio.

31/07/2020 22:03:33
Posted by Keith Miles 2 on 31/07/2020 21:47:07:

I will, however, from the Spektrum DX9 manual, quote the recommended (but adjustable) cut-off level of 6.4 v for a 2S Li-Po/Li-Ion battery i.e. 3.2 v per cell.

I understand that the manual is wrong and the protection circuit in the battery pack will shut off above this voltage.

31/07/2020 17:21:00
Posted by Paul C. on 31/07/2020 13:56:23:

my knowledge of batteries is less than not a lot but this does appear to be at odds to how we are told to handle lipo flight packs.

Transmitter batteries have a lot easier life than most LiPo flight packs and the LiPo pack in your DX8 will have a little board in it to look after the cells.

31/07/2020 13:44:44

As and when I decide that the 2S Li-Ion pack in my DX9 is approaching the end of it's useful life, I shall take it apart and replace the two cells with new ones.

All my LiPo's are stored fully charged. I may be losing a some cycles, but I really can't be bothered keeping them at their storage voltage and charging before I go flying.

Edited By Steve J on 31/07/2020 13:45:24

Thread: The Alpina is back!
31/07/2020 09:14:19

About 2/3 of the way down this page there is a bit on these models (in German).


Thread: Battery connectors
31/07/2020 07:52:28

I used to put genuine Deans connectors on my 2200's and 1300's. A few years ago I decided that cutting XT60's off to replace them with Deans was silly, so I am in the process of changing over to XT60's for those sizes.

I have lots of adaptors, most of which only get used if a club mate wants to borrow a charger or wattmeter.

Posted by perttime on 31/07/2020 06:55:23:

What about small models? Still XT?


Thread: james hammond aeroic firebird 1.5m
30/07/2020 20:28:11
Posted by Dickw on 30/07/2020 20:06:12:

Posted by Steve J on 30/07/2020 18:11:52:

I am trying to remember what my full carbon Prodij cost back in 2008. Low to mid £200's I think and it doesn't need 8mm servos.

Is this the Prodij you mean - starting at £500?

That is the HM, mine is one of these. Both are discontinued. Aeromod do a 1.5m Minij starting at €259.

I have had a look for topics on the Firebird on other forums. There doesn't seem to be a lot of discussion about it going on.

30/07/2020 18:11:52
Posted by MattyB on 30/07/2020 17:44:55:
Posted by Steve J on 30/07/2020 16:51:40:

£468 for a 60" glider!

This is one of the reasons why all moulded 60 inchers have rather died out - they are very expensive as the time and labour are nearly as much as on a 3m model, and the materials are not that much less.

I am trying to remember what my full carbon Prodij cost back in 2008. Low to mid £200's I think and it doesn't need 8mm servos.

I've often wondered what I would replace it with. I won't be a Firebird at that price.

The HP60 was not suitable for that though - definitely the fastest plank I have ever flown

I have the 48" Halfpipe and actually prefer it to the M60, but as it was my first sloping session for a while, I decided to take the M60.

30/07/2020 16:51:40

£468 for a 60" glider!

Posted by MattyB on 30/07/2020 13:38:52:

... having flown bucketloads of 60inchers over the years I have decided not to have any more ...

I managed to get out for my first slope session of the year last weekend. Which were the two models that committed aviation? My M60 and Prodij .

Edited By Steve J on 30/07/2020 16:52:00

Thread: Circlip pliers
27/07/2020 17:48:21

Farnell Circlip Pliers

27/07/2020 16:58:15

How about reverse action tweezers?

Edited By Steve J on 27/07/2020 16:58:35

Thread: Rx !!!!!!!!!!!
27/07/2020 15:51:23
Posted by john davidson 1 on 27/07/2020 15:46:36:

I have never manage to bind a DSMX tranny to a DSM2 receiver

Post January 2015 EU Spektrum transmitters will not do DSM2 as DSM2 does not comply with EN 300 328 1.8.1.

My late '14 DX9 will bind to DSM2 and DSMX receivers (but sadly not to DSM Marine receivers).

Edited By Steve J on 27/07/2020 15:53:22

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