Search found 520 matches

by RAF96
Tue Aug 21, 2018 3:40 pm
Forum: DCC Forum
Topic: Hornby Class 20 TTS Loco in Consist
Replies: 53
Views: 1937

Re: Hornby Class 20 TTS Loco in Consist

brammie wrote:?..advice from RAFHAAA96 (what year was that entry?)...!


Joined RAF as an apprentice rigger Sept 1960, departed Halton July 1963 to join the grown up Air Force, departed RAF July 1984, gave up paid work July 2009.
Rob
by RAF96
Sat Aug 18, 2018 9:40 am
Forum: DCC Forum
Topic: Hornby Class 20 TTS Loco in Consist
Replies: 53
Views: 1937

Re: Hornby Class 20 TTS Loco in Consist

The TTS decoder needs to be connected to the motor as it relies on the bemf to alter the sounds depending on load and speed, that won't happen if you use a different decoder to power the motor. TTS steamers use BEMF to control the chuff rate and chuff/coast relationship hence require a motor, but T...
by RAF96
Thu Aug 09, 2018 12:25 pm
Forum: DCC Forum
Topic: How Good is It
Replies: 23
Views: 904

Re: How Good is It

Be aware the power jack input for the Hornby kit is an odd size, so finding a laptop supply to match may be a challenge. Rob Thanks for that Rob by the way I enjoyed your website :D Thank you Nobby - I got volunteered to build and maintain it on behalf of our dwindling number of vintage ex-Halton B...
by RAF96
Wed Aug 08, 2018 1:06 pm
Forum: DCC Forum
Topic: How Good is It
Replies: 23
Views: 904

Re: How Good is It

Be aware the power jack input for the Hornby kit is an odd size, so finding a laptop supply to match may be a challenge.
Rob
by RAF96
Tue Aug 07, 2018 3:34 pm
Forum: DCC Forum
Topic: Hornby TTS decoder combos 2018?
Replies: 5
Views: 297

Re: Hornby TTS decoder combos 2018?

The diesels are better than the steamers in my opinion due to the inability of the latter to synch chuffs to wheel rate. The diesels also drive quite realistically and have adjustable notching points (TTW). The speaker installation has a lot to do with the overall sound quality including swapping ou...
by RAF96
Tue Jul 31, 2018 9:38 am
Forum: New discoveries???
Topic: Led's
Replies: 11
Views: 1259

Re: Led's

Similar to the Ikea error, a friend of mine in Cyprus had a slab of beer from Llidl, placed one can on the belt and called attention to the slab in the trolley. You guessed it he got a slab of 24 beers for €0.44.
Rob
by RAF96
Tue Jul 31, 2018 9:32 am
Forum: Hornby - including Lima, Rivarossi, Jouef, Electrotren
Topic: How to dismantle a Hornby Smokey Joe ?
Replies: 4
Views: 214

Re: How dismantling a Hornby Smokey Joe ?

These little Hornby 0-4-0s usually have the body held to the chassis by hooked lugs. Some press fore-aft to release and some sideways. There are usually two and can either be at front or back according to the chassis/body combo. There is the added complication of wangling the body around the large w...
by RAF96
Sun Jul 29, 2018 9:27 am
Forum: DCC Forum
Topic: Runaways & Unresponsive Points! Help!
Replies: 15
Views: 519

Re: Runaways & Unresponsive Points! Help!

Hornby decoders - if these are the old R8215 as often found in DCC Fitted locos then they are prone to runaway and memory loss after a short. Best replaced with something better. Points - how did you set up the accessory decoder addresses. With the Select they must be addressed in the range 60-99 bu...
by RAF96
Wed Jul 25, 2018 8:52 am
Forum: DCC Forum
Topic: Coach lighting problem
Replies: 12
Views: 467

Re: Coach lighting problem

Sparks across the points, could well be B2B or a need for IRJs if its only one point.
Rob
by RAF96
Sun Jul 22, 2018 1:44 pm
Forum: DCC Forum
Topic: Runaways & Unresponsive Points! Help!
Replies: 15
Views: 519

Re: Runaways & Unresponsive Points! Help!

As I keep saying the Select is only out of NMRA spec under no or low load conditions where ringing is seen on the waveform.

Either by loading the track with a few DCC locos or fitting an eBay aftermarket choked damper cable the perceived anomaly goes away.

Rob
by RAF96
Sun Jul 22, 2018 8:26 am
Forum: DCC Forum
Topic: Runaways & Unresponsive Points! Help!
Replies: 15
Views: 519

Re: Runaways & Unresponsive Points! Help!

Fortunately you can switch off DC running within the Select. It is an option in the unit reset procedure, all clearly visible in that part of the manual.
That obviously switches the capability off in the controller, not in each decoder, which may still be the problem.
Rob
by RAF96
Mon Jul 16, 2018 2:35 pm
Forum: DCC Forum
Topic: Soldering
Replies: 21
Views: 649

Re: Soldering

I use the thumb test to determine if fishplates are loose and generating high resistance. With a current load on the track move round each rail joint with your thumb. If there is a high resistance the joint will be hot. When found tighten a loose fishplate by pressing onto the rail with a flat blade...
by RAF96
Mon Jul 16, 2018 2:27 pm
Forum: Electronics
Topic: Bi-directional lighting on HSTs
Replies: 32
Views: 1073

Re: Bi-directional lighting on HSTs

Going back to the breadboard method... If you use a couple of vari-resistors to set up and ‘manage’ your combined colours its a simple matter to read the vari-set values of those resistors and look for the nearest standard value. The reason I generally use an extra resistor in the ‘blue’ leg is beca...
by RAF96
Mon Jul 16, 2018 8:56 am
Forum: Electronics
Topic: Bi-directional lighting on HSTs
Replies: 32
Views: 1073

Re: Bi-directional lighting on HSTs

If you want to make yellow from a red/green led then you need to correctly balance the forward voltage and current of each colour (see led spec sheet) and this will determine the required resistor values. There are on line calculators for this. For loco use you can generally get away with the same r...
by RAF96
Sat Jul 14, 2018 8:21 am
Forum: Electronics
Topic: Bi-directional lighting on HSTs
Replies: 32
Views: 1073

Re: Bi-directional lighting on HSTs

Peterm
I was referring to my own post not talking to resistors, not yours. I ignored resistors to (hopefully) make my explanation as simple as possible, but thought I should mention that in case anyone came back about it.
Sorry for any confusion.
Rob

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