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- Nov 19, 2014
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Hi,
currenty I'm preparing a scale rebuilt of the Anzani 3W dated from 1909 (Bleriot Type). A big challenge for me.
At the Internets archive, i found a scetch of the crankcase, with some dimensions on it.
https://web.archive.org/web/20081013122643/http://www.bleriot.org/sketch/front.htm
What made me start thinking, is the different distance from the center to the cylinder sockets. The middle cyl. has a distance of 95 from the cam, however the left&right cyl. have only 94!
There are also scetches of the connection rods.
https://web.archive.org/web/20080906161053/http://www.bleriot.org/sketch/1rod.htm
https://web.archive.org/web/20020903071544im_/http://bleriot.org/images/sketch/2rod.jpg
https://web.archive.org/web/20080906161025/http://www.bleriot.org/sketch/3rod.htm
But unfortunately the length is not specified for all of them. So it's not clear if they used different lengths to compensate the extra 1mm.
In this old-fashined engine design, this one millimeter will not affect the running characteristics, but I would still like to know what might be the reason for this.
My best guess is, that's just a manufacturing tolerance...
Any ideas?
- Robert
currenty I'm preparing a scale rebuilt of the Anzani 3W dated from 1909 (Bleriot Type). A big challenge for me.
At the Internets archive, i found a scetch of the crankcase, with some dimensions on it.
https://web.archive.org/web/20081013122643/http://www.bleriot.org/sketch/front.htm
What made me start thinking, is the different distance from the center to the cylinder sockets. The middle cyl. has a distance of 95 from the cam, however the left&right cyl. have only 94!
There are also scetches of the connection rods.
https://web.archive.org/web/20080906161053/http://www.bleriot.org/sketch/1rod.htm
https://web.archive.org/web/20020903071544im_/http://bleriot.org/images/sketch/2rod.jpg
https://web.archive.org/web/20080906161025/http://www.bleriot.org/sketch/3rod.htm
But unfortunately the length is not specified for all of them. So it's not clear if they used different lengths to compensate the extra 1mm.
In this old-fashined engine design, this one millimeter will not affect the running characteristics, but I would still like to know what might be the reason for this.
My best guess is, that's just a manufacturing tolerance...
Any ideas?
- Robert
