JLRT 45/55xx Build in S7

[jc2001]

I realise it's been a long time since my previous progress report. The reality is there has been no progress as I got distracted with a commission to build the track for Lynton in O14 and then got a new fulltime job.

Details on the Lynton project can be found on my blog here: Pentewan Light Railway: Lynton in O14

Well this week I did a status check on the project. I have a running chassis, I had got the motion working well and had started to fit the brakegear. The trouble is there is a significant wobble in two of the wheels (see earlier posts about this). Inspection shows that the cause of the wobble on the central RH wheel is actually down to the axle which flexes on one of the glued joints. New axles have been ordered today to remake it - this time I am considering using milliput instead of epoxy and with a metal strengthening rod within it. I think the other wheel may be the wheel itself so it may mean a new wheel and re-profiling if I can't tempt it back into line.

John

 

[Steph Dale]

John,

In some applications I use lengths of epoxy - coated 2mm silver steel instead of the GRP rod when making the split axles.

Also, watch what adhesive you use, there is a reason I use Devcon 2-ton...

Steph

 

[jc2001]

Hi Steph

I did use Devcon 2-ton but perhaps the GRP rod was not stiff enough. I was planning to use some silver steel rod with the milliput - which is a lot less messy if it works.

John

 

[jc2001]

The milliput with a piece of steel rod within worked really well. On the previous (failed) axle I isolated either side of the central gear but I realised I only need to do one side as the gearbox is isolated from the motor and chassis. Both wheels now run true on the central axle and I think I've corrected the set on the remaining wobbly wheel but am leaving it mounted in my lathe for a long weekend to be sure.

John