Dave Park’s 2-Stroke

[JasonBModerator @jasonb]

Finally got round to reading about this engine in issue 4372 and noticed a couple of issues with the drawings.

 

Fig 9. The 4.5mm dimension is given against the length of the lower liner but should be the width of the central band.

 

Fig 14. There are no lenths given except the counterbored hole, should be about another 5 before the part can be made. Also ther lift of the cam is not given, just the duration.

 

Apart from that nice drawings.

 

Jason

 

PS Hope I’m not getting a reputation for nit picking

Edited By JasonB on 08/03/2010 12:40:05

[JasonBModerator @jasonb]

[Jeff DaymanParticipant @jeffdayman43397]

personally I appreciate error warnings – in case I ever want to use the drawings.

[JasonBModerator @jasonb]

Also in the first installment the spark plug thread is given as 1/4″x40.

 

These plugs are UNEF threadform, in the UK builders may take this as being an ME thread which is 55deg not the 60deg of UNEF.

 

Jason

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