Author Topic: Aero 350 pistons  (Read 599 times)

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Offline Tazmantic

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Aero 350 pistons
« on: 06 Jan 2022 at 13:14 »
Hi all does anyone know the dimensions of the above pistons, if they are still available or an equivalent that can be used ? As I’m looking to possibly bore out some barrels.

Cheers

Offline Red

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Re: Aero 350 pistons
« Reply #1 on: 06 Jan 2022 at 16:36 »
Don't know whether this will help. Not easy to read but someone else may have a better copy

Roy

Offline Dads bike

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Re: Aero 350 pistons
« Reply #2 on: 06 Jan 2022 at 17:12 »
Evening
60.8mm bore x 60mm stroke is the std size.for the 1936 350cc Aero.
 Steve

Offline Tazmantic

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Re: Aero 350 pistons
« Reply #3 on: 08 Jan 2022 at 09:58 »
Cheers guys, anyone know an off the shelf piston I could get hold of these days that would fit? or with minimal machining.

Dads bike what book is that please?

Cheers

Offline Dads bike

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Re: Aero 350 pistons
« Reply #4 on: 08 Jan 2022 at 19:42 »
Evening
 Ref the 350cc Aero pistons, have you tried the Douglas club? They did source a large quantity of Hepolite “Douglas “ pistons when Hepolite ceased trading many years back. Maybe lucky.

As for the book, if you do go for one take care as there are many incorrect listings and statements, but does still have some good info.

Steve

Offline Tazmantic

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Re: Aero 350 pistons
« Reply #5 on: 09 Jan 2022 at 15:32 »
Cheers Dads bike, with reference to the pistons (and this is probably a stupid question) when it says "metal" what are the prefixes for? i presume Al is aluminium but what are the other 2??

Offline Dads bike

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Re: Aero 350 pistons
« Reply #6 on: 09 Jan 2022 at 19:58 »
Evening
There are no stupid questions !
Ref Hepolite pistons,
Al is aluminium
Ci is cast iron
H’lex is heplex which is a low expansion silicon alloy.
For a 1936 350cc Aero go for ref 5318 on the Hepolite catalog sheet.

Steve

 

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