[SEL] BSA 420cc Engine

[John & Beryl Cooper]

Hi Peter,
Piston shape has no bearing on cubic capacity. Volume is calculated bore
radius squared X Pi X stroke.
John Cooper,
Bega Australia.

-----Original Message-----
From: sel-bounces at lists.stationary-engine.com
[mailto:sel-bounces at lists.stationary-engine.com] On Behalf Of Listerdiesel
Sent: Monday, 17 August 2009 3:59 PM
To: The SEL email discussion list
Subject: Re: [SEL] BSA 420cc Engine


2009/8/16 Jerry Evans <jerrye at databak.co.za>:
> At 06:00 PM 16/08/2009, you wrote:
> I see no reference to a 420cc engine but
> Peter has a lot more knowledge of these things than I do. Peter, could 
> a different shape piston account for 100cc on this size bore?
> Jerry Evans

I was using the Hepolite Piston & Ring catalogue, it lists:

120cc 56mm bore, flat topped piston
220cc 68mm bore, flat topped piston
320cc 76.199mm bore, flat topped piston
420cc 82mm bore, slightly concave piston
420cc 82mm bore, concave piston

Peter
-- 
Peter A Forbes
Email: listerdiesel at gmail.com http://www.oldengine.org/members/diesel
http://stationary-engine.co.uk
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