Jasonb's latest activity

There is no manifold mount at the front of the engine. The pipes just have an oval flange to "match" the casting. It's a Twin pipe one...

The single uses a different arrangement to hold the post as the plug is on the opposite side of the head to where the rocker post and...

Most of the hit & miss engines are fairly low compression. I don't have the 1/3rd scale PMD one that I built but it was possible to...

Sid that would probably be an option just have to make sure the counter bore did not break out the lower face particularly if it needs...

Andrew, I think there may be a note on the original Upshur drawings to do what I suggested. EG a stud that stays loctited into the head...

I've seen a few model IC engines built with Hydraulic tube, the pre honed bore can be used as is and is ideal for anything with a long...

Another option may just be to drill the post with a clearance hole Or do as you say adjusting the end until things line up. But I would...

I see two little fishies 1. The thread into the head is quite shallow so you need to make sure you avoid the spark plug thread and also...

Funny enough I drew an alternative liner a couple of days ago for Timo and put a 1mm x 1mm chamfer on that as it just looked right to me...

Timo, see my comments about the conrod hitting the liner and my suggested fix...

It seems Andrew Whale wa susing teh MEB drawings so less likely to be a difference between the ones from Mrs Upshur and the ones from...

That may explain why I can see differences as I am looking at the plans that were in Model Engine Builder. I have marked the sizes they...

Almost, 450mm long with near 11" flywheel. All engines have the basic sizes in the last photo or on the product data sheet

Brian's rods don't look quite the same as the original designer drew them so it was probably OK on the original. Rods should not be...

The latest issue of MiM dropped on the mat today and I thought I would just take a look at the website of one of the small adverts in...