Clan pacific bogie problem

[BR60103]

I've been having a problem with my Clan MacGregor derailing. 

When I checked the underside, I saw that the front bogie frame has deformed. The H shape now has 2 legs spread out so that the 2nd axle doesn't rotate freely.

 

Does anyone else have this? 

 

I don't know if the bogie frame is mazak; it doesn't look to be cracking up yet. I'm afraid to try to push it back to shape.

 

[Steamport Southport]

If you need replacements Peters Spares has got them.

 

http://www.petersspares.com/?id=0&searchStr=clan

 

 

 

 

Jason

[sidmouth]

it would be interesting to see a picture of the deformed bogie please

[pheaton]

Deleted mis-read the loco and confused it with the merchant navy which is well known to suffer mazak rot in the pony truck

Edited November 16, 2017 by pheaton

[MikeParkin65]

Would be interesting to see if this is mazak Roy and therefore could be added to the mazak rot list. It brassmaster plan to do a chassis kit for everything Hornby have produced since 2001 they will have a guaranteed future for the foreseeable it seems ....

[34theletterbetweenB&D]

...I don't know if the bogie frame is mazak; it doesn't look to be cracking up yet. I'm afraid to try to push it back to shape.

 It is mazak. There's nothing to lose functionally in trying to straighten the casting enough so the wheelset turns again, as it is already an unreliable runner. Most likely the casting will snap like a carrot, as even perfect mazak isn't inclined to bend that much. A simple repair to keep the model running for as long as the casting lasts would be to Araldite a formed strip of metal to the bogie underside, to provide a replacement bearing for the rear wheelset.

 

I would be inclined to treat this as an upgrade opportunity; someone must offer an etched kit for the bogie, and the rest of the model more than justifies it.

[Steamport Southport]

Comet do the Clan/Britannia bogie as an etched kit.

 

Part LS4.

 

 

 

Jason

[BR60103]

Pictures of the bogie. Not sure if they shoe enough.

 

 

[BR60103]

Deleted mis-read the loco and confused it with the merchant navy which is well known to suffer mazak rot in the pony truck

When I tried to search for this, all I found were Merchant Navies.

[34theletterbetweenB&D]

As a 'cheap and dirty' fix to keep it running, take the wheelset out, and always suporting the leg you are working on, gently file down the ends of the outside faces to reduce the overall width at the back end of the bogie, until the wheels turn freely and have perhaps a millimetre of side to side play. (You must not have both tyres simultaneously in contact with the bogie casting for obvious reasons.)

[sidmouth]

Thanks for the images. Definitely deformed but hard to tell if Mazak or just lacking a back bar 

[pheaton]

If there's no cracking present easiest way is to hold it up to the light, and as the reflects off it early signs of mazak rot is matt blemishes on the surface. However when you try to do anything with it, it will just crumble.

[BR60103]

If you need replacements Peters Spares has got them.

 

http://www.petersspares.com/?id=0&searchStr=clan

 

 

 

 

Jason

Peter's Spares no longer has them.  

[BR60103]

A test with the Ohmmeter makes me think it's plastic, not any form of metal -- infinite resistance.

[BR60103]

My replacement bogie arrived today, tacked onto a friend's order.

 

When I removed it, while I was trying to undo the screw I pushed too hard with my thumb and snapped both projections off, very neatly with the big part of the casting. The bogie is definitely Mazak or similar. Not sure how to analyse the break.

 

Testing may take place tomorrow.