Boosting power on a Hornby model railway

If you’ve expanded a Hornby DC model railway set beyond the basic circle you may find your trains slow down in places. 

Most of us start with Hornby model railway sets which come with enough OO gauge track for a small oval or continuous loop. The controller connects to the circle of track and the trains merrily run around until they are stopped or reversed. Bliss.

Then we expand the track, making the oval bigger wth a few sections of straight track, perhaps adding points for a siding or two or even adding secondary oval outside and linking across. The possibilities are, of course, endless.

But then the trains start to slow down. The connections are rechecked and the rails cleaned – read this guide to track cleaning if you’re unsure of how to do this – but still no joy.

This is an issue that I’ve touched on before but judging from my inbox is a regular problem so it’s worth covering again.

The most likely problem is that power isn’t getting around all of the track.

To recap, power flows from the power clip on one rail to the next through the fish plates that hold the rails together. But power can be lost at the joints and on long runs of track and this power loss can be enough to bring the locomotives to a crawl.

The solution is to supply power at regular intervals around the track.

And the easiest way of doing this is to get some of these Hornby track link wires and daisy chain them around the track.

Connecting these is no harder than attaching the original power clip and as mentioned all you need do is connect one end to a section of track where the trains run normally and the other to another section of the track further on and repeat this working around your layout. The railway isn’t then reliant on power going across all the track joints and you should have sufficient supply at all points for the trains to run smoothly.

I cover these track link clips in more details in the original post on power clips if you want more information on them.

As the railway grows and you perhaps move it to a dedicated baseboard I’d recommend more sophisticated solutions such as soldering wires from the controller/transformer to the rails in multiple places and having several controllers providing independent operation of different sections of the track but this is beyond the scope of this post.

If you continue to have problems drop me a line via my contact page (or email info @ and I’ll be happy to try and help.

> A final, personal, note: I spend a huge amount of time testing, photographing, writing and researching techniques for these articles and pay for all the running costs of MRE out of my own pocket. If you found this article useful you can support me by making a donation on my fund-raising page. Thanks and happy modelling, Andy.


Founder of ModelRailwayEngineer, Andy Leaning

Andy is a lifelong modeler, writer, and founder of He has been building model railways, dioramas, and miniatures for over 20 years. His passion for model making and railways began when he was a child, building his first layout at the age of seven.

Andy’s particular passion is making scenery and structures in 4mm scale, which he sells commercially. He is particularly interested in modelling the railways of South West England during the late Victorian/early Edwardian era, although he also enjoys making sci-fi and fantasy figures and dioramas. His website has won several awards, and he is a member of MERG (Model Railway Electronics Group) and the 009 Society.

When not making models, Andy lives in Surrey with his wife and teenage son. Other interests include history, science fiction, photography, and programming. Read more about Andy.

Afflliate disclosure:The links on this page may take you to carefully selected businesses, such as Hornby, Amazon and Scale Model Scenery, where you can purchase the product under affiliate programmes. This means I receive a small commission on any orders placed although the price you pay does not change. You can read my full affiliate policy here,

Add Comment

Required fields are marked *. Your email address will not be published.

This site uses Akismet to reduce spam. Learn how your comment data is processed.