Search found 92 matches

by Scrat
Sun Sep 13, 2020 12:30 pm
Forum: The Workshop
Topic: Lamps reloaded...
Replies: 6
Views: 6131

Re: Lamps reloaded...

Hi John,

PM me your email address.
I do not want to disturb others discussing German locos here.
by Scrat
Tue Jul 14, 2020 2:41 pm
Forum: Freight Rolling Stock
Topic: 3D Printed Wagons.
Replies: 4
Views: 582

Re: 3D Printed Wagons.

I agree with Matt that for some parts 3d printing is an alternative.
My PZ201 armoured railcar has lots of 3d printed (detail) parts but nothing that takes any load.
by Scrat
Mon Jul 13, 2020 7:37 am
Forum: Freight Rolling Stock
Topic: 3D Printed Wagons.
Replies: 4
Views: 582

Re: 3D Printed Wagons.

I would like to see how the coupling hooks are attached and how/if the frame is reinforced.
They look a bit fragile.
There should be a continuous steel link from one coupling hook to the other, otherwise I would not dare to have them right behind the loco in a long freight train...
by Scrat
Wed Jul 08, 2020 11:52 am
Forum: Freight Rolling Stock
Topic: 17D Wagons.
Replies: 7
Views: 764

Re: 17D Wagons.

I hope they do not cancel the 5" gauge bogies.
Took ages to deliver, but great value for the money.
by Scrat
Thu Jun 25, 2020 12:53 pm
Forum: The Workshop
Topic: speedy
Replies: 4
Views: 1310

Re: speedy

Hi Johannes,

your link only leads to the top page of the forum.
Can you give us a link directly to the topic?

Best regards

Holger
by Scrat
Fri Jun 28, 2019 8:10 am
Forum: The Workshop
Topic: Lion
Replies: 2
Views: 1030

Lion

As some may have noticed, there is another wreck in my workshop for an overhaul. This time it is a 5" gauge LION ti the Titfield Thunderbolt plans. It is an unfinished, stripped model. Some parts have been lost, others damages. I already cleaned and painted the frames, worked on the cylinder block a...
by Scrat
Tue Jun 11, 2019 10:56 am
Forum: For Sale and Wanted
Topic: LBSC Titfield Thunderbolt
Replies: 1
Views: 1027

LBSC Titfield Thunderbolt

Looking for plans for the 5" Lion aka Titfield Thunderbolt.

Got a semi-finished one and a box of bits but no plans or Articles.
by Scrat
Wed Feb 06, 2019 10:01 am
Forum: The Workshop
Topic: Radio-Controlled Locos
Replies: 15
Views: 3030

Re: Radio-Controlled Locos

The failure of the speed controller is highly unlikely. Most use H-bridge output so at two transistors have to fail to short circuit. If one fails (let´s say one for forward) and you want to go backwards there will be a short circuit of the supply voltage, taking out the fuse. So the first failure i...
by Scrat
Tue Feb 05, 2019 7:55 am
Forum: The Workshop
Topic: Radio-Controlled Locos
Replies: 15
Views: 3030

Re: Radio-Controlled Locos

This topic seems to have gone cold.... My armoured railcar (PZ201) is now ready to run under RC. I used 4QD components. Safety features as mentioned in my last post. I addition the 4QD controller has an ignition function. This can be coupled to a set of NO contacts on an additional relay and be used...
by Scrat
Mon Feb 04, 2019 8:21 am
Forum: The Workshop
Topic: drain cocks
Replies: 1
Views: 826

Re: drain cocks

I do. Reichsbahn class 55. As with any equipment on a steam loco, these automatic drain cocks need maintenance (a good clean every now and then). I unscrew the cap, remove the ball and clean the inside of the casing with a Q-tip. I have these automativ drain cocks on all my steam locos and never exp...
by Scrat
Sun Dec 16, 2018 10:02 pm
Forum: The Workshop
Topic: T26, correct shade of blue
Replies: 1
Views: 838

T26, correct shade of blue

Hi,

I am looking for the RAL code of th blue colour of Class T26 number 490 preserved at Bressingham.
The closest matchi I think is RAL 5022 "Nachtblau".
Does anyone have a better Idea?
by Scrat
Wed Oct 10, 2018 7:57 am
Forum: The Workshop
Topic: Radio-Controlled Locos
Replies: 15
Views: 3030

Re: Radio-Controlled Locos

Going a bit further. The 4QD controllers have a failsafe system. If power is on but not commanded it will go to failsafe mode and switch off. So the only critical path left would be the rc receiver or RC to 4QD adapter commanding full speed due to a hardware failure. A simple stuck-at-high failure c...
by Scrat
Thu Aug 09, 2018 7:12 am
Forum: The Workshop
Topic: Radio-Controlled Locos
Replies: 15
Views: 3030

Re: Radio-Controlled Locos

I am just putting together a "testing project". The artillery car of the PZ201 armored train has been on my list for quite some time. Now I have started. I will show how I did the RC stuff. As the RC system itself has a failsafe mode that switches off all controllers after not receiving any valid si...
by Scrat
Fri Jul 13, 2018 6:40 am
Forum: The Workshop
Topic: Radio-Controlled Locos
Replies: 15
Views: 3030

Re: Radio-Controlled Locos

Hi Dave, I agree. We do not need to be too precise as there are many ways of dealing with the problem. If it works, it can be used. for me the important issues are: RC control of a NO relay: How can be assured that if the RC goes haywire it is still reliable enough to shut off the relay? Not an easy...
by Scrat
Tue Jul 10, 2018 2:55 pm
Forum: The Workshop
Topic: Radio-Controlled Locos
Replies: 15
Views: 3030

Re: Radio-Controlled Locos

This is true. We need to assess the rangers and their probability. One can always construct a "what if" that leads to desaster. I would like to get a group together and share experiences, perform a simple FTA, collect available data on mishaps and then try to come up with a sensible and safe procedu...
by Scrat
Tue Jul 10, 2018 7:36 am
Forum: The Workshop
Topic: Radio-Controlled Locos
Replies: 15
Views: 3030

Re: Radio-Controlled Locos

I have never had trouble with relays as reversers. My locos have wired controllers using sub-D plugs (with the screws removed) underneath the buffer beam. If the loco separates from the train, all I have to do is hold the handset. The plug will come off and the loco will stop. On my class 216 I use ...
by Scrat
Thu Jul 05, 2018 8:10 am
Forum: The Workshop
Topic: Radio-Controlled Locos
Replies: 15
Views: 3030

Re: Radio-Controlled Locos

Hi Dave,

i hope to start a discussion here with members sharing their experience.
So we will not have to re-invent the wheel.

Holger
by Scrat
Sat Jun 30, 2018 10:25 am
Forum: The Workshop
Topic: Radio-Controlled Locos
Replies: 15
Views: 3030

Radio-Controlled Locos

Concerning the article in the last TURNOUT. A relay to cut off power in case of emergency (mosfet failure to short) is an option. But relays can also become troublesome.... I would like to suggest something similar to the well-known "crowbar-circuit". The crowbar is normally used as overvoltage prot...
by Scrat
Wed Jun 06, 2018 9:20 am
Forum: General Discussion
Topic: Turnout Topics
Replies: 2
Views: 1175

Re: Turnout Topics

Wow, i´m impressed....

111 Views,
only 2 Votes,
only 1 Reply.

As 100 per cent of the votes are "no" there will be no further articles from me.
by Scrat
Mon May 07, 2018 7:55 am
Forum: General Discussion
Topic: Turnout Topics
Replies: 2
Views: 1175

Turnout Topics

9Fman wrote:
Wed May 02, 2018 8:09 am
Get whatever you can to Dave....
I could write some articles e. g. about Bavarian secondary line locomotives such as the "Glaskasten".

This is mine:
Image

Please let me know if you are interested.

Holger