Nerd1000

Just felt like doing some turning today, so I made the valves. Minh you must have missed my reply where I said the pump timing can...

In this case the pins are softer than the shaft and cam; taper pins are usually just mild steel. They shouldn't be seeing torsional...

It's also possible to change the timing by varying the clearance between the pump cam follower and the pump plunger, a larger clearance...

Not far off regarding the size, the shaft for reference is 8mm. I used a torch, which is adequate for the silver steel I'm accustomed to...

Here's a bit more progress: Gudgeon pin and its aluminium buttons. Assembled with piston and rod. Making the cams for the camshaft...

Why not use an investment casting method for this?

I think it is the methanol that keeps them glowing in glow motors. There are some special glow plugs made for running glow motors on...

I'll add that 3d printed gears work quite well in my experience. I 3d printed a set of back gears for my lathe and they're still going...

For mine I was planning to rope start.

It's very easy to just substitute the nearest standard metric size on the Webster, for mine I just printed out the plans and annotated...

Hi Lloyd, I was recently reading about old "Field Marshall" tractors, and I think they might be of interest as a source of ideas for...

The heat will reduce fuel viscosity, but maybe that is a good thing?

Hey mate, we're not far apart (I'm in Brisbane). Welcome and good luck!

That would be normal for a gear pump. As I understand it they are more efficient (less leakage back past the gears) with thicker fluids...