Lightweight Engine Components

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RogerRamRod

RogerRamRod

The Older I Get, The Faster I Was
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CCF8EB58-6BB8-49CD-AEA6-74154AE4F624.jpeg
I saw these on FB.
Crazy huh?

Naimo Composites Developing LS Carbon Fiber Connecting Rods
 
Thats crazy. Carbon fiber is very rigid but also very brittle, unless they 'alloy' it to give it a little give. I could see one of those shattering on a pre-ignition if those are enough to break ring lands.
 
I have those rods in my 340. Adjust them out to full length and I gain 800 hp.
 
Honda Motorcycle had an experimental motor that had ceramic pistons that were not round but shaped like a 3bbl secondary. Larger bore size with a smaller cylinder, less friction and heat loss or something like that. Rings would be a nightmare unless they were a 2 part that lapped in he middle? google GTP race Polymotor. Ceramics are F'n hard as hell to machine. Diamond bits are about the only thing that works.
 
Looks like the linked article is two years old. Also a quick google search seems to point that they may be out of business, or never really got it out of the concept stage.
 
pishta said:
Honda Motorcycle had an experimental motor that had ceramic pistons that were not round but shaped like a 3bbl secondary.
Click to expand...
Are you speaking of these guys?

NR-500-Piston.jpg


They were used in the NR 500/750 engines that were raced in the late 70's and early 80's... Crazy stuff... :)
 
8 valves per 'cylinder', gotta be a record! Never got far. Dropped in 82 and they went right back to to standard 2 stroke in 83 and they won the 500cc Championship that year. These pistones are hardly ceramic but the article I read in popular mechanics did have this piston shape. Maybe its predecessor



1024px-Ovalpiston.jpg
 
This was also done on a SBM years back.
 
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