Member postings for Jonesthenuke

On the Whiston thread, I seem to remember the envelopes said something like "Cat-a-log" with a picture of a cat and a log? Anyone kept one?

Used to be a good supplier of fasteners and surplus items

Chris

I suspect the right type of peristaltic pump has a good chance of working. Many Air Conditioning units use such pumps to discharge condensate to the exterior of the building or to drain. Try looking on auction sites for "condensate pump" and you'll see many of these. Aspen are a common make, one of theirs is rated 288 litres per hour against a 4.8m head. This is ~4 litres per minute, which would suit many users coolant demand I would think. I have one of these pumps and intent to try it some time, the only concern I have is that the tube will wear if there is swarf etc in the fluid, so a good inlet filter is required. I would not suggest this for commercial/continuous use, but for hobby use I think its worth a try.

If there is an issue with the delivery flow being uneven, it should be fixable with a small head tank and overflow, this will stabilise the head and is nice and simple. 

Chris

Edited By Jonesthenuke on 16/03/2013 16:25:13

Thanks for the replay Ian.

In addition I have queried this with the Anson Museum who have (very helpfully) replied as fdollows:-

The original oil hole, as you suggest, goes outwards. When I quizzed Graham who made the original castings for the model, he thought it might act as an oil retaining feature by doing it the opposite way. I don’t know of anyone having a problem with the lubrication but if I was building one I would probably do it opposite to the drawing.

So the consensus seems to be oil hole facing radially outwards, so that is what I will be doing.

Thanks all!

Chris

Thanks for the replies. I think i will go with the facing outwards approach. The oil feed is only into the centreline of the crank pin from a "trough" that is shallower than the crank pin diameter, so I see no viable mechanism to ensure oil will flow when the engine is rotating. I will also try the Anson museum and see what they have to say.

Chris

Edited By Jonesthenuke on 14/03/2013 18:59:59

Hi, I am currently making one of these. Currently looking to finish the crank, in particular the oil way to the con rod bearing. The drawing shows this facing "inwards" towards the centreline of the main bearings, which to me seems counter-intuitive. I am tempted to drill in the other direction so that centrifugal action throws the oil outwards into the bearing. I am wondering what the original engine design was, any idea?

Chris