Engines > From Kits/Castings

Anzani Y-Type

(1/4) > >>

cwelkie:
It's done!
I was fortunate enough to acquire a set of castings for the 1/4 scale 1910 Anzani 3-cylinder radial last autumn and spent the winter/early spring working on the engine.  As many of you know, the castings included the crankcase halves, rear cover, carburetor and intake pipe elbows.  I used cast iron for the integrated cylinder/head design.

Of all the components, the cylinders were the most challenging.  I used Alibre to finalize the cylinder and head details before beginning the machine work to ensure I had achieved a reasonable facsimile of the original cylinders to work with the Chenery design.  They aren't exact scale but worked out fine.

The internal gears required to drive the exhaust cam were all shop-made to drawing.  The gears used in the ignition distributor however were DP48 pinions intended for radio control model cars.  The pitch diameters and ratios all worked out by adjusting tooth counts as required.  Modifications to the hubs and thicknesses were all easily achieved in aluminium "potchucks".

The rings were made using the "no heat" method of turning and oversize cylinder, cutting the gap and final diameter sizing on a mandrel.  Fortunately, the engine has very good compression after a few short runs already so the rings and valves are sealing nicely.  I did pressure test each cylinder as the valves were lapped to be sure of a good seal.

I did take a number of photographs during the work so if there are any specific questions or curiosities, please ask and I'll try to help.  In the end, it was a satisfying build.

https://youtube.com/shorts/r3BsHbPG68o?feature=share

cwelkie:
Some photos taken during construction ...

RReid:
That's quite an interesting engine, and you've done a bang-up job in building it. Seems to run great in the video, and sounds just right too!
Congratulations! :ThumbsUp: :cheers:

Jo:
Well done.

This is a direct link to your engine running:

http://www.youtube.com/watch?v=r3BsHbPG68o

In case anyone is confused trying to find the Les Chenery Y type Anzani drawings, Les only drew up the Fan type, the Y type is a variation on these drawings which was initially done by Mike Coles who also provided the castings (Mike also did castings for the W and a different variation on the Fan types). Mike has since given up doing castings  :old: there is still the odd set kicking around with various casting hoarders :-X

The drawing for the iron cylinder was done by  :headscratch: it will come to me  :old:

Jo

Roger B:
Splendid  :praise2:  :praise2:  :wine1:

The video has unfortunately loaded as a 'short' which YouTube seems to do now and then  :killcomputer:

Navigation

[0] Message Index

[#] Next page