Rocking Horse Poo

[sidecar bob]

It's all trainspotter bullshit really though. Even though I owned a 750/4 when they were semi modern, I wouldn't be able to pick, or much less care wether a bike was "sand cast" or whatever.
I owned pre production gsxr1100g chassis number 000003, it was worth no more when it was new, or now.
It's like owning a matching numbers bike, how does that make it more fun to ride?

[Voltaire]

er I said sandcast is a myth, they were rougher but only because they were never pressure dicast.
http://www.sohc4.net/cb750-sandcast/

Spoiler

I stopped at the 500/4, never even knew about matching numbers then, was more interested in matching flares with platforms.

[sidecar bob]

er I said sandcast is a myth, they were rougher but only because they were never pressure dicast.
http://www.sohc4.net/cb750-sandcast/

So in short they are a substandard orphan, cool.

[husaberg]

So in short they are a substandard orphan, cool.

Nah, they were just a rougher than usual finish for Honda standards.
At the time I guess it was a production expedience vs cost.
They did have issues around the chain case when the chain broke they tended to destroyed the cases, they strengthened them later.
Early Ducati SS cases were also sand cast and later diecast.
http://www.webgrafex.com/roundcase/d...20diecast.html
A lot of small production run stuff is sand cast and the tools to diecast are really expensive.

Sand cast is generally easy to spot as you can see the imperfections in the casting from the sand surface.
but sand cast are labour intensive and slow for mass production.

I am pretty sure evo Harleys are about the only exception, were a die casting was done on purpose, in order to look like a poor surface finish resembling a sand casting.

Spoiler

I stopped at the 500/4, never even knew about matching numbers then, was more interested in matching flares with platforms.

My father still has a 350/4. I'd rather have a 400/4, much better bike

[sidecar bob]

Weaker, rougher, different number of bolt holes. Sounds like a decent K2 would be a lot more fun.

[husaberg]

Weaker, rougher, different number of bolt holes. Sounds like a decent K2 would be a lot more fun.

Yes undoubtedly, but its the collectors that drive the price for collectables.

Not neseracry weaker though, sandcast weld better and are generally stronger, but heavier and thicker walled.
Most exotic stuff like formula one stuff is sand cast due to the production runs being small.

Like Neils (fletner) on KB crankcases
https://www.youtube.com/watch?v=2nuI_QG8Ff0
https://www.youtube.com/watch?v=UdSw3QbZtKE