HarleyTechTalk

Anyone know what the reasoning was for some Brit companies to use brass to make their motorcycle heads back in the 30's? I not sure if any American companies did that

Don't know why not...easy to cast and work, very good heat conduction. Just my thoughts on it.
Cheers, Jeff

Quote from: JC 92FXRS on May 13, 2016, 08:28:04 AM
Don't know why not...easy to cast and work, very good heat conduction. Just my thoughts on it.
Cheers, Jeff

Makes sense, thanks

Probably saving the aluminum for WW2 aircraft.
Ron

   Cost would be prohibitive, even back then. Pro's are probably limited to ease of casting, but there would be a ton of cons vs. cast iron or aluminum beyond wieght. you'd definitely would need valve seats for any seat life, machined surfaces, like head gasket area would likely warp, and or bolt tension. But I'm sure the very few companies that did try brass quiet or died quickly

Be bronze not brass... old cannon material Actually they worked very well for 2 strokes......

do not know of any 4 stroke heads cast in bronze

I think some Rudges had bronze heads

Brass sure would be pretty.

Copper looks nice too.

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http://www.barrett-jackson.com/Events/Event/Details/1941-HARLEY-DAVIDSON-FLATHEAD-CUSTOM-MOTORCYCLE-184279

Pretty, yes, but I would guess you'd need to take a picture quick because if you actually run it I doubt it's pretty for very long.

The bike is predominantly copper plated, not pure copper.
The Heads are S&S copper plated heads.
All the copper is plated and all the brass is solid.
Nice to look at for sure and someone out there now has a fancy item in their study to show off and talk about.

Is there something rude about the kickstarter?   

Bike sculpture...common ornamentation amongst the wealthy; but who uses teflon tape on ferrules??

Quote from: -deuced- on May 14, 2016, 05:40:33 AM
Is there something rude about the kickstarter?   

Probably ran out of funds and used his wife's fun stick. 

   cling 

It's most likely the best looking part of the bike too.