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View Full Version : Purpose of rubber between fins?


Slorider
4th May 2014, 16:14
I can remember a couple of ole air cooled Suzuki's I owned had rubber blocks fitted between the cooling fins on the barrel,anyone know what their purpose was and did it work..........don't see this on later model gear.
Ocean1
4th May 2014, 16:49
I can remember a couple of ole air cooled Suzuki's I owned had rubber blocks fitted between the cooling fins on the barrel,anyone know what their purpose was and did it work..........don't see this on later model gear.

I always assumed it was to shut the bastards up a bit. Certainly taking them out caused them to make more of a ringing noise.
nodrog
4th May 2014, 17:18
Just to make them abit quieter. Old beemers had similar.
Laava
4th May 2014, 17:57
And to stop them from stress fracturing.
Nowadays the alloys they use are far superior and and also cast in a far superior way.
cheshirecat
4th May 2014, 19:18
And to stop them from stress fracturing.
Nowadays the alloys they use are far superior and and also cast in a far superior way.
Don't let Mr S Honda know that. His RC174 used alloys metal coatings still unknown to us plus the cylinder block used 29 interlocking sub moulds and JPX's CNC machine-took several weeks to set up for the job. The machining operation itself took 14 hours and 90 tool heads to machine a single cylinder block.

Read more: http://www.motorcyclistonline.com/features/122_honda_rc174_six/crankshaft_engine_cylendar.html#ixzz30jG2GgSC
Ocean1
4th May 2014, 19:50
Don't let Mr S Honda know that.

"Compared to this," Beale sighs, "the Benelli was built by a blacksmith." :laugh:
Laava
4th May 2014, 20:01
Don't let Mr S Honda know that. His RC174 used alloys metal coatings still unknown to us plus the cylinder block used 29 interlocking sub moulds and JPX's CNC machine-took several weeks to set up for the job. The machining operation itself took 14 hours and 90 tool heads to machine a single cylinder block.

Read more: http://www.motorcyclistonline.com/features/122_honda_rc174_six/crankshaft_engine_cylendar.html#ixzz30jG2GgSC

Cool, I never had one of them, I had a Yammy DT360 made of cheese. The crankcases fell apart.