Cast Brass Hornby Grange Chassis.

What are you up to on your workbench
User avatar
swiftbeam
Posts: 71
Joined: Thu Dec 07, 2017 11:09 am

Cast Brass Hornby Grange Chassis.

Postby swiftbeam » Sat Dec 09, 2017 5:14 pm

Hi Guys,

Just bringing my info over from somewhere else to share with you as I'm no longer there!

I was doing a Bachmann split chassis Manor chassis swap for a Hornby Grange chassis. Everything went well until the Hornby Chassis snapped right at the end due to Zink rot. I thought that was a 60's thing, but apparently it still happens now. A very annoying lesson learnt!

So not to be beat, I glued and painted the now modified Grange chassis and got my brass caster to cast me a new Chassis from lost wax brass. This casting got the project back on track, but it was a total pain due to shrinkage. I had about 0.020" between the 1st and 3rd axle. After several days of problem solving and fitting and refitting, I had a running chassis :D

I had a spare Mashima motor, so I thought it would be a good idea to make that fit the chassis before the job was called 'finished'. This involved making up and soldering into place a nickel silver plate that fitted the motor perfectly and modifying the original Hornby rear motor mount.

I'd not recommend having a chassis cast in brass if yours rots due to zink rot, but this post shows it can be done! The upside is (apart from having the problem solved and a working model) is the brass casting is 21g heavier :D
IMG_4140.JPG
IMG_4292.jpg
IMG_4297.jpg
IMG_4299.jpg
IMG_4293.jpg

User avatar
swiftbeam
Posts: 71
Joined: Thu Dec 07, 2017 11:09 am

Re: Cast Brass Hornby Grange Chassis.

Postby swiftbeam » Sat Dec 09, 2017 5:15 pm

IMG_4298.jpg
IMG_4295.jpg
IMG_4355.JPG
IMG_4294.jpg

Ex-Pat
Posts: 1581
Joined: Tue Feb 08, 2011 10:51 pm
Location: Dundalk Ireland

Re: Cast Brass Hornby Grange Chassis.

Postby Ex-Pat » Sat Dec 09, 2017 5:25 pm

Very interesting - what sort of money does a bespoke casting cost?

P.S.: Be careful not to drop it!

User avatar
swiftbeam
Posts: 71
Joined: Thu Dec 07, 2017 11:09 am

Re: Cast Brass Hornby Grange Chassis.

Postby swiftbeam » Sat Dec 09, 2017 5:27 pm

£30 mould (can be used hundreds of times)
£10 for the casting
Total £40 plus postage.

Dad-1
Posts: 5419
Joined: Sun Aug 24, 2008 8:05 pm
Location: Dorset - A mile from West Bay.

Re: Cast Brass Hornby Grange Chassis.

Postby Dad-1 » Sat Dec 09, 2017 5:32 pm

swiftbeam, That sir is a neat piece of engineering.

I always fancied a Grange and Manor to fill blank spaces in my GWR
traction. I've since decided I already have too many locos anyway !!

Those prices almost acceptable although solving the shrinkage probably
was a trying fettling job.

Geoff T.
Remember ... I know nothing about railways.
viewtopic.php?f=22&t=32187 and Another on viewtopic.php?f=22&t=28436&start=60&st=0&sk=t&sd=a

User avatar
GeraldH
Posts: 725
Joined: Fri Aug 13, 2010 6:10 pm
Contact:

Re: Cast Brass Hornby Grange Chassis.

Postby GeraldH » Sat Dec 16, 2017 10:52 am

That's an impressive piece of work. I've had two Hornby Toby chassis disintegrate from mazak rot. How did you resolve the shrinking problem?
Gerald H - BNR Correspondent :)

My layout: http://www.newrailwaymodellers.co.uk/Fo ... hp?t=28854


Return to “The Workbench”

Who is online

Users browsing this forum: No registered users and 1 guest