Welcome to PenBits' virtual trade stand for Scalefour North International, 2021.

See below for information on our range of etched-brass kits for applying sprung suspensions to proprietary, ready-to-run, 4mm scale diesel locomotives, as part of a conversion to P4 or EM standards.

• Watch Them Go...

• Class 52 Update (orders invited now!)

• What's In The Bag?

• How Does It Work?

• How To Buy

• More Information

Watch them go...

LMS 10000 in action on the ECML: on Mick Wakefield's P4 layout inspired by Grantham (with some bonus Pacific action thrown in! - all the other stock in this video is sprung using Dave Bradwell's bogie and chassis kits)

Lion - taking the superelevated reverse curves on the PenBits P4 test track.

So it's not about party tricks, climbing over matchsticks and all that stuff, but poise, grace of movement, those miniscule adjustments in the suspension that provide that extra degree of realism...

...oh, alright then...

...here are a few clips from one of our regular customers, having fun in EM gauge and, incidentally, showing that you can just enjoy the way it works without having to get hung up on esoteric fine detail.

Class 52 Update

Our new kit for the Heljan Class 52...

We should have them in stock within the next couple of months. There will be a functional suspension kit for £36.00 (on which the Heljan plastic detail parts can be mounted) and an additional detailing kit (including brakes, steps, cosmetic bogie details and chassis fittings) for £26.00 (prices subject to confirmation).

The suspension kit will be a straightforward build, the detailing kit will provide a bit more of a challenge and a lot of options.

We are happy to accept orders by email now (), and will send out PayPal invoices for payment when the kits are ready.

Instructions are a work-in-progress but you can view progress so far here (pdf).

The video shows an earlier test build in action on our test track.

What's in the bag?

What you get in the kit...

How does it work?

Axle Bearings, Subframes, and Bolsters: the main functional parts that you build from the kits, explained on this page (click here).

How To Buy

Our mail order service is open for business and we have all the kits in stock.

Click here for details.

More Information

Please use the menus at the top of this page to navigate around the PenBits website.

You will find details there of all the kits, and full sets of instructions to read or download.