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Sprung bogie fitted to D16/3

Fen End Pit

Entry posted by Fen End Pit

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Another Friday night and I finally got the right wheels fitted into my bogie and then the bogie fitted to the loco. The key thing here was that I wanted to bogie to give some guidance to the loco and not just 'go along for the ride'. I was concerned that with my tight curves on the P4 roundy-roundy I would see an unreasonable amount of overhang unless the bogie helped 'pull the front of the loco round'.

 

First up is a picture of the underside of the footplate, you can see the rubbing plate for the spring from the bogie to push against. The side frames are soldered to match the main frame section, spaced for P4 rather than in the slots designed for OO. Finally you can see a length of spring steel which connects the main chassis to the bogie.

 

blogentry-7212-0-04853200-1307898901_thumb.jpg

 

Turning to the bogie you can see the sprung buffer which springs the bogie against the footplate. Also on the beam which leads back to the main chassis is the hole in which the spring steel wire previously mentioned engages.

 

blogentry-7212-0-11158400-1307898882_thumb.jpg

 

On the track everything looks pretty level and nicely sprung. The buffer height is a shade (~1/2mm) high but I haven't got the loco correctly weighted yet. I still haven't got a motor connected but have pushed the loco around with another and it doesn't fall off the track!

 

blogentry-7212-0-19605000-1307898866_thumb.jpg

 

I must admit to being quite pleased..

 

David

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4 Comments

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jwealleans

Enjoying this build, David. What spring have you used on the bogie? I'm sure you're aware of the dangers of it lifting the leading drivers and affecting adhesion.

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  • RMweb Gold
Fen End Pit
  • RMweb Gold

Enjoying this build, David. What spring have you used on the bogie? I'm sure you're aware of the dangers of it lifting the leading drivers and affecting adhesion.

 

 

In the centre of the bogie I have mounted an old sprung buffer. The spring is actually quite light so I don't expect to have any problems with it lifting the front. Also as the buffer is of the sort where the shank has a thread and a nut on the rear I can also adjust the springing quite easily.

 

David

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  • RMweb Gold
Brinkly
  • RMweb Gold

Hi David,

 

Just out of interest what radius are your curves?

 

Regards,

 

Nick

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  • RMweb Gold
Fen End Pit
  • RMweb Gold

Hi David,

 

Just out of interest what radius are your curves?

 

Regards,

 

Nick

 

They go down to about 40", a bit tight for P4, but as it is around my study I can't get a bigger radius without knocking holes though into my son's bedroom - now there's an idea.....

 

David

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