Member postings for La Cathedrale

Now that Flash is offfically dead, is there a plan for a HTML5 reader for the online digital subscription and back issues?

cheers!

Thank you Nigel

You DO hold a vice by hand in a drill press though, don't you?

Very strange that these are available and recommended, but don't seem to have anyone actually using them?

@nigel - Mr. Crispin on YT (rolls royce fitter?) uses cast iron pistons/spindle valves with stainless steel shafts, inside cast iron lined cylinder blocks - materials-wise, that seems fairly straight forward? That said, as far as I know despite being an excellent engineer this is his first loco build.

ps. I wil review the paddle steamer engine right now

Hi Andrew,

Isn't this the 'question' with cylnders also (i.e. requiring precision to prevent steam leakage) ? i.e. we need to do it (i.e. precise machining) twice rather than once if we use a piston valve?

Hi Tom,

I was looking at either an A1 or a B1 - much like the question of piston valves, I'm also very interested to know how much of a factor a tapered vs parallel boiler is. Basically, is it something that just takes longer with more prep, or is it a cliff edge brick wall of difficulty that will require a bought-in boiler/etc.

I want to build a loco with piston valves instead of slide valves, but I see them much more rarely than slide valves.

Other than the challenges of turning the bobbin and the associated faff of another cylinder to bore, more piston rings to make, etc. - is it intrinsicly more difficult? It just seems like a bit more long winded, rather than actually problematic?

If not, and I am being overly sure of myself - is there a suggested resource for me to get my teeth into?

Many thanks,

I've just bought one of these arbor pads (both a flat and a vee) so I can put off buying a pillar drill until I've finished moving house - but it occured to me that I've no idea how I would hold work. Is it a case of holding the machine vice by hand against the pad? Or holding the work directly on the pad? I would have thought there was a high chance of hte work catching and cutting my hand !