tonchio tronfio board track racer

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ducaroso

New Member
Oct 16, 2014
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greece
finally the new crankshaft has arrived I bought a c100 one witch has 51mm stroke now all I have to do is to machine a longer pin but there is no hurry about my v twin because I decided to build a single for this frame and start another more serius build for the v-twin and since I want this bike fast I will go the cheap way
 

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Ludwig II

Well-Known Member
Jul 17, 2012
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For some reason, your pics won't open out on my screen. Is it the R7 AJS we're looking at, as in this pic?
 

ducaroso

New Member
Oct 16, 2014
53
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0
greece
yes Ludwig its the k7 a.j.s 1920my its the closest look of engine I can make if I want the bike to be ready for cristmass
 

Ludwig II

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Jul 17, 2012
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I like them. There's something understandable, accessible about those old engines.
 
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Ludwig II

Well-Known Member
Jul 17, 2012
5,071
783
113
UK
Occasionally an exposed pushrod engine cane lose one when the valves float a bit. There are two ways around it if you want to retain the old fashioned style. Either carry spare pushrods with you, or do what Gnome Rhone did with their licence built ABC, and have couple of discreet retaining loops to catch it when it bounces free.