Quote from: Newportnobby on October 10, 2025, 01:39:48 PMCould it be something as simple as back-to-backs on the Pendo?

Sorry to ask nobby but what are back to backs??!

It's a miss for me too I'm afraid

Could it be something as simple as back-to-backs on the Pendo?

@Steven B

Thanks for the tips but I have been through those steps already.

Derailments are random

They happen when running the full consist or just one loco and a short set of coaches. The only time they don't happen is when running two locos alone coupled to each other. These have traction tyres hence my query of those who say to get rid of them. Link up some coaches to those locos and disaster happens!

Also no other multi-carriage HST's such as my Eurostar or TGV have the same problem on the same layout

Hmm, not for me I am afraid... @kusojiji !

Crash Test Dummies - God Shuffled His Feet.

Love his voice!


https://youtu.be/0aqlS9SOkjs

Traction tyres have been used on continental outline models for years without most of the issues that British outline models appear to have with them. Is it the implementation of the way their owners are treating them?

If the Pendo keeps derailing then I'd get down to rail level and have a good look at what's going on. Does it happen randomly or always at the same location? Are any wheels riding up on the track causing the derailment or is the train catching on scenery? I don't know if it's possible to run the Pendo with just a powered car (or just a portion of the train), or with the cars in a non-standard order - if it is, does the problem go away if certain cars are left in the box? Does the problem move if cars are relocated in the train?

To be honest, if I were you I'd stop messing with it and contact Revolution Trains about getting it repaired properly. However they were caused, you shouldn't be having these issues and they're the best placed to get them fixed.

@jpendle @Hightower

Thanks both

Did you find that removing the tyres reduces derailments? I only intend to run mine on the flat.

I still need to solve the speed difference between locos first and isolate that as the cause of the derailments before removing the tyres. I know there is a way to do that with the Z21 but it involves timing circuits with a stopwatch - don't know if there is a simpler way?

Re sounds and the Z21 app there are two frustrations:

In Vehicles/Functions screen illustrated below, the Test Function button does nothing. But the saved function does appear to work in the Steering/Pendolino screen.

What I meant by losing the function is that after setting the function, it appears to work once and then not at all or intermittently. This applies to both sounds that are only supposed to work when stationary/only when moving. Could it be the traction tyres are preventing adequate elctrical pick-up?

Who the hell is Frank? Stuffed if I know!

@jpendle

Did you find you needed all traction tyres removed? I've done a few runs with one removed which was fine at the rear of the train, but when it was the front power car I had constant derailments.