22-05-2018, 10:31 PM
I was of the understanding that the Austin sports rods gudgeon pin was located by brass buttons.
This was continued right up to the three bearing Speedy / Nippy engine. ( have seen the inside of on original three bearing Nippy engine complete with brass buttons )
If using pinch bolts they must have a plain shouldered section which locates in the half moon of the pin to stop the pin moving. ( pinch bolts must be HT steel with correct lockwashers, if overtightened they can break )
The circlip location method is much more modern and only suitable for non austin or genuine sports rods.
Hope this helps a bit.
This was continued right up to the three bearing Speedy / Nippy engine. ( have seen the inside of on original three bearing Nippy engine complete with brass buttons )
If using pinch bolts they must have a plain shouldered section which locates in the half moon of the pin to stop the pin moving. ( pinch bolts must be HT steel with correct lockwashers, if overtightened they can break )
The circlip location method is much more modern and only suitable for non austin or genuine sports rods.
Hope this helps a bit.