Recent content by dave-in-england

You will probably have to format the SD card before you can use it.

Here is an interesting web site for small home made engines I have found today. http://www.mysterelly.com/index.html

What is a GFCI ?

So how do you inject the plastic into the mold ?

=========== Yes you are correct ! No doubt that Solidworks has some inconvenient restrictions applied to their software. http://www.solidworks.co.uk/sw/education/student-software-3d-mcad.htm I will delete the original post.

Post has been deleted

Personally, I don't see any point at all with putting cooling fins on a stationary MODEL engine. A nice smooth cylinder will look just as good. The problem with horizontal fins is that they actually trap hot air between them, in stagnant zones, there is no smooth path for the rising hot air...

Hi All, There is currently a Sieg Micro-Mill for sale on Ebay. No connection with myself, but I thought that someone here may be interested. £ 50 at the moment with 5 days to run ! dave...

It is probably olde worlde 1/4" UNC You could try tapping through the thread with an M6 coarse tap, or if it is too loose, then drill it out with 6.80 dia. drill and then tap M8.

~~~~~~~~~~~~~~~ :rolleyes::rolleyes::eek: DAMN !!!!! This is just like one of those sneaky gotcha college exam questions. OK i'll start again ! Total volume = 16836.97 cu. mm. left over volume = 2110.76 cu. mm. ratio = 7.967:1 :wall: .

Total volume = 14726.22 cu. mm. left over volume = 2110.76 cu. mm. ratio = 6.97:1

. How about ....for something a little different ..making the crankcase with clear Perspex ? So you can see it all working inside, would be a bit of a challenge ! May have to make it a little larger, and with thread inserts to hold the cylinder screws, but it would be fun to see working ! .

-------------------------------------- You can see at the bottom of this chart that both Propane and Acetylene have much higher Kilo-Joules per cubic metre energy output than city coal gas. http://www.thecartech.com/subjects/engine/fuel_calorific_value.htm You could try Propane...

. The problem with having a screw thread directly on a bearing housing is that it will never line up exactly concentrically. Would be Fine if the bearing housing is tightened and locktited permanently, and then afterwards the bore is finish turned to size, but once you turn the thread even a...

. Does the online advert state that the drills are actually High speed steel, (H.S.S.) or coated ? A large cheap set are usually cheap for a good reason. You will also be left with a lot of drills that you will never - ever use. It would be a lot cheaper if you buy just the few drills that...