0041 Trouble with Dapol N gauge HSTs

For years I've had trouble with Dapol N gauge HST dummy power cars not being free-rolling - I show the problem and explain how Dapol handled it when I reported it to them. After a long wait I've received my HST Castle set, so was interested to see if that also has the dummy car issue.

In the video I said the Castle set doesn't look like it's going anywhere near a scale 125 Mph at full speed, and that I won't be measuring it. After receiving a comment about that I decided to do a simple measurement and it came out at a scale 121 Mph! So actually it's scale top speed is pretty much spot on.

My video about fitting a DCC decoder to a Dapol HST:
   • 0023 Fitting a DCC decoder to Dapol N...  

I've used Dapol Imperium 2 Next18 decoders in all of my Next18 locos.

The Polyimide (AKA Kapton) tape I used to insulate decoders:
https://thepihut.com/products/polyimi...


Other videos or channels I know have had similar dummy power car drag issues:

Chandwell August 2020 update with draggy HST:
   • Dapol HST a brief new arrival at Chan...  

Kingswear N-Gauge episode 2 with draggy HST:
   • Ep:2 Kingswear  

Will's N Gauge Trains:
   / @willsngaugetrains