Gallery, Projects and General > Project Logs

Webster IC Engine build log.

<< < (8/69) > >>

Bogstandard:
As I have said many times before in different places, if it is a proven design, stick with it, do cosmetic changes if you want to, but leave the basic figures as they are.

Cast iron rings can be an art unto themselves, and to start learning new ideas and techniques half way thru a build is not something that you should be doing. Leave it to the end when you can concentrate on it a little more.

Once you have it running, THEN you can play around with a new piston and rings etc. Knowing that you can easily swap back if things don't work out.


John

NickG:
True, many websters have been built and run. The guy mentioned has just finished another build log which I found quite infuriating - he didn't seem to listen to advice, even from people with vast experience of this, then he'd stumble across a solution in a later post and claim he'd solved the problem himself, whereas if he'd listened, he wouldn't have got into the predicament in the first place - anyway, rant over!

Out of interest though, how much clearance does it allow for an aluminium piston in cast iron cylinder? It must be right or they wouldn't run properly. When I tried that in my flame gulper it locked solid after a couple of mins - that is why you need rings with that method and presumably a hefty clearance built in. With iron and iron the expansion rate is the same, so you can go with a minimal clerance - that will also reduce friction compared to something with rings - more useful in hit & miss type applications where you want it to coast freely, shouldn't be a problem with yours.

Nick

raynerd:
I have managed to get a little more done on the frames / supports for the Webster Engine. The first one to attempt was the cylinder support. I bored the blind 1" cylinder neck support in the 4 jaw on the lathe. I`m becoming increasingly fond of m  4-jaw, it use to scare me but now it is becoming a good friend! Sadly the material I was hoping to use for the cylinder support was not wide enough and the only thing I had wide enough was not long enough. As I didn`t want to purchase more materials, I have used what I have and added a brass rising block to increase the length.


Then for the long support whittled from this piece of ally:


All the parts resting on each other with a little block under the cylinder to stop everything falling over!




Parts so far:



I just need to decide on the base material now so I can start to bolt things down but I`m not 100% happy it is thick enough. I might just have to bite the bullet and and purchase something a little thicker - but that is going to cost :(

DeereGuy:
Chris,
Looking like you have a good start!  Mine is still sitting in a box with lots of parts....one day I may get my focus back on it and actually finish it.

raynerd:
Hi Bob, I was hoping this may inspire you to continue! I read all your build log posts before beginning mine and they helped a lot!

Chris

Navigation

[0] Message Index

[#] Next page

[*] Previous page