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Your Layout and Models => Train Surgery => Topic started by: KevinM723 on January 23, 2020, 08:18:39 PM

Title: Early Grafar rolling stock
Post by: KevinM723 on January 23, 2020, 08:18:39 PM

I am running some of my Grandad's vintage rolling stock mainly Grafar, 1970s I think, and encountering some issues.  I think I can work through coupling issues be retrofitting NEM pockets, however I am having issues with axles falling off.

My Grandad was something of an engineer and some of the rolling stock he removed the plastic axles and machined up brass replacements but the bogies on some carriages are stretching or the holes the axles sit in are wearing, and then we have some of the moulding issues of the early plastic wheels.

Any tips other than replacing bogies/truck chassis and getting new wheel sets?
Title: Re: Early Grafar rolling stock
Post by: Dr Al on January 23, 2020, 08:39:57 PM
In terms of coaching stock, you can get replacement bogies for any of the bogie stock (they all used the same BR Mk1 bogie, even on Pullmans and suburbans).

These are new so should have no wear, but you will have to replace the loop couplers with later sprung mount ones. These bogies are also made for later silver tread metal wheels, so you may be better chucking the wheels you have and replacing with those - they aren't directly available, but many people have loads from wheel changes - I have tonnes of them for example.

Also, if you push on with the existing wheels, I'd check for burrs and anything on the axle ends that could really be damaging the axle boxes - generally I've never seen wear on these with standard wheels, even on the absolute oldest of stock. Occasionally bogies look to have frames bent or warped outwards making wheel fit loose, but I've always just bent them back to square and they've been fine.

Title: Re: Early Grafar rolling stock
Post by: ntpntpntp on January 23, 2020, 09:03:32 PM
If an axle is falling out, remove it and try gentle pressure on both axleboxes to bend them a little closer together, then refit the axle. If necessary dip the axleboxes in hot water first to soften the plastic a little.

Back in my British N days I used to like some of old Grafar stock, simple but did the job.  I didn't even mind the "U-bend" couplings within semi-permanently coupled trains.
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