Member postings for vintagengineer

I am building GN cycle car engine with some OHV heads. I am stuck on how to calculate the valve spring length and poundage?

I once worked with lady called Gill Gill. Now that caused a few problems with some customers!

You can make closed hoops on a pyramid rolls. You need to use a longer length of material and cut off the excess after rolling.

In South Africa we had a a bottle catch fire, the foreman got one of the native labourers to put a sling around it and the crane driver dropped it in the boiler pond. As far as I know it's still there!

You only need acetylene in the workshop if you are gas welding steel or ali. Everything else can be done with propane.

Oil refineries used to run steam trains that didn't have any boilers. They used to charge the steam chest with superheated very high pressure steam from a piped system and the boiler house was a couple of miles away.

Instead of hammering them you could squeeze them which would give a tighter fit. Getting the strakes to the correct helix is quite easy if you set your rollers up correctly.

I thought Yorkshire fittings were so named because they used less solder!

It looks very similar to an Austin 7 rim. The reason the tube is split is it was cheaper then welded tube. It would have been rolled into a circle and the welded.

I coach paint cars and the only brushes that are any good are Hamilton and Purdy brushes. A 3" Purdy will set up back about £45.

Knurling does raise the material and increases the diameter. It is often used as a bodge foe bearing housings that are undersize.

Also why do people put the wrong knurls on konbs. Straight knurls are for knobs that need turning and diamond knurls are for knobs that need pulling.

You could try filling it with water and freezing it then bend it.

Cowboy 1: Hey, partner! Go help your uncle jack off a horse!
Cowboy 2: How many times do I have to tell you, it's "help your Uncle Jack off a horse!
Cowboy 1: Oh, sorry for making that homosexual grammar error!

Might be mallable iron.

Shoulder bolts have a plain section that is larger than the threaded section.

.The M8 is for jacking the pulley apart and the M6 should be a shoulder bolt.

Mine is a constant 68F. I installed a air to air heat pump.

If you asked me to make something in Aluminium I would make it from an old saucepan. If you asked me to make something from alloy I would ask what the end product would used for and choose a suitable alloy. Putting a thread in aluminium is like putting a thread in toffee! Use the correct thread for material you are using and the loading you are going to subject to.

Everyone is refering to aluminium, when it doesn't actually exist. They are all alloys of some description, I have casting cast in an alloy that can then be hardened to increase it's strength.

I thought modern welded tracks where allowed to move in their sabots?

RR used to specify helicoils for all aluminium threads.