Farish Mk1 back-to-backs and derailments

[railsquid]

I was running a rake of recent Farish Mk1s around my admittedly not terribly well-laid viaduct loop today, and noticed one coach would 9 times out of 10 have a bogie semi-derail each time it went over a particular piece of pointwork - a Tomix double slip for anyone taking notes, albeit not one which has caused any noticeable problems for pretty much anything else. Checking the wheels on the offending bogie with a back-to-back gauge revealed they were a bit too close together and after adjustment the problem has gone away.

Just thought I'd mention that in case anyone else is suffering from the same issue.

[Byegad]

Yes, I too check back to backs after a derailment. Getting that right really does help.

[Newportnobby]

In 40 years of N I have never had an issue with b2b or derailments , and don't even possess a b2b gauge

[railsquid]

In 40 years of N I have never had an issue with b2b or derailments , and don't even possess a b2b gauge

I didn't until recently, when someone suggested a possible cause of my original Dapol Class 33 going poof! over pointwork might be b2b issues. Anyway I was initially skeptical about the Tomix double slip in question as I still can't quite see how wheels should "know" which way to go, but it works with a whole variety of stock from various decades and countries, apart from this one Grafar Blue Riband Mk1 coach. "Aha", methinks, "let us try out this b2b gauge thing on the offending bogie", and it offends no more.

[Newportnobby]

Glad your offending bogie has been to 'the correction centre', Squiddy.
I may have to retract my statement when my Peco double slip comes into action

[ChrisWV10]

What exactly do you do with one of these? I get that they assess whether the wheels are at the correct spacing but what do you do if they aren't? Just squeeze or pry apart?

C. 

[railsquid]

What exactly do you do with one of these? I get that they assess whether the wheels are at the correct spacing but what do you do if they aren't? Just squeeze or pry apart?

Yes, just gently push the gauge between the wheels and they should slide apart.