Fixing Steel Axle to Plastic Gear

[Pannier Tank]

Thinking ahead to a Dapol Class 22 Gauge conversion where I will be re-using the Plastic Gear Wheel on replacement extended Axles. The Gear Wheel is a push fit on the Axle and I am concerned that this may slip when in use. I am not too sure on what adhesive to use, Super Glue may set too quickly before the axle is in position, Araldite maybe too thick and some of the Loctite Retainers expand when applied to Steel and therefore could possibly split the Plastic Gear Wheel.

Can anyone recommend a suitable adhesive?

 

[AJC]

Hello,

What I’ve done for similar conversions is to simply roll the centre of the axle over a file creating a bit of knurling and to let friction do the job. This has worked just fine up until now with locos in service for over a decade hauling decent length trains. Absolutely no need for adhesive of any kind.

Adam

 

[Neil]

Like Adam says use a file to knurl the axle. I find it easiest to lay the axle on the workbench, press a reasonably coarse file down on top of it and roll the axle to and fro with the file, keeping the pressure on.

 

[richard carr]

David

I'm assuming you mean a class 22 diesel that you want to convert to S7.

Why wouldn't you use the original axle ?

Richard

 

[AJC]

David

I'm assuming you mean a class 22 diesel that you want to convert to S7.

Why wouldn't you use the original axle ?

Richard

I reckon this thread probably gives the answer: 2mm Dia Axles (do Dapol do their 22 in 7mm? I've no idea - it's a bit big for EM...).

Adam

 

[Pannier Tank]

Thank you all for your replies which were very helpful and much appreciated. I'm probably being a bit over cautious as this is my first attempt at re-gauging a Diesel Locomotive with Split Axles.

I'll report back when the conversion is complete.

 

[andrewb]

I’ve easily and successfully re-gauged a 1960s-era Hornby Class 22 from coarse OO to P4 using replacement gears from Ultrascale - they have an awesome selection for just such a job, all crafted in brass both with push fit and grab screw fastening. Differing ratios too. Might be worth giving their website a quick look over. Plus, I don’t remember them taking as long with these products as they do with wheels. So it shouldn’t delay things much either.

 

[Pannier Tank]

I’ve easily and successfully re-gauged a 1960s-era Hornby Class 22 from coarse OO to P4 using replacement gears from Ultrascale - they have an awesome selection for just such a job, all crafted in brass both with push fit and grab screw fastening. Differing ratios too.

That's another possibility I'd not considered, thank you for sharing. I'll take a look at the Ultra Scale Website.