Nice RM 400

[bazza]

In england, auctioned by Rick and Vintage Iron - a multi cultural 400

[HVA61]

I beleive Deano had the head on the right cast , so Frank , as they say , had a blank canvas to work with.

Nothing better than a bit of Franks magic

[firko]

In england, auctioned by Rick and Vintage Iron - a multi cultural 400

What was Mikey?

[JohnnyO]

The pic i posted above is the '79 RN500 works bike that was in Australia late '79 for a few different riders at different races. It's worlds apart from a production RM400.

1980 was the last, same bike as the above one.
\

JohnnyO can you explain please where Goofs RM500 fits into these boxes of goodies or was Goofs bike just a good worked quality production RM500 for 83 ?
Thanks

http://ozvmx.com/community/index.php?topic=22069.0

Yes Alison Goof's bike was a heavily modified production RM500 single shock. A fairly different bike to the last of these twin shock bikes.

[JohnnyO]

I beleive Deano had the head on the right cast , so Frank , as they say , had a blank canvas to work with.

Nothing better than a bit of Franks magic

Why all the extra welding and machining on the surface area of the cyl head?

[Davey Crocket]

Why would you cast a new head to put a modern style combustion chamber in it.....we just re-machine it and shrink a solid alloy slug into it then CNC the new combustion chamber.....easy peasy and if you fark it you just remove the slug and put a new one in......also we put the spark plug in the middle.

[Doc]

This pre production RM250 had some interesting bits..swingarm, forks and large front brake

[firko]

By mid evening I reckon some genius will come on here and announce what a shit design Deano's new Frank Head is. You watch

[Ktm181]

By mid evening I reckon some genius will come on here and announce what a shit design Deano's new Frank Head is. You watch

Well not exactly, but is it a mod from the period? 

Kt

[Ted]

And a mod I had done 6 yrs ago to one of my bikes

[JohnnyO]

Why would you cast a new head to put a modern style combustion chamber in it.....we just re-machine it and shrink a solid alloy slug into it then CNC the new combustion chamber.....easy peasy and if you fark it you just remove the slug and put a new one in......also we put the spark plug in the middle.

I don't think that's a new casting, you can see where it's been welded up around the stud holes..

[Rossvickicampbell]

and I think I could safely say that isn't why he is winning - put him on a motorised coke can and he would still be in front I reckon!

[HVA61]

I think you will find that the welds are where there were some minor deficencies in the castings. The deficencies were filled and machined for the obvious reasons

As for the reasons for casting new heads , you need to ask Deano.

Good effort all the same

[09.0]

 Just got my head back for my 400 Maico from the U.S. via FlyingDG from the forum. This is the work RKTek does.

[SON]

In england, auctioned by Rick and Vintage Iron - a multi cultural 400

And now in Australia