home-made titanium frame for air-cooled mono Honda

[Mark K]

I just read that the frame weighs 3.8 kilos. That is light.

In a recent post the builder of that claimed it was 3.3 kg (well under half the weight of an original frame) and he also confirmed that the 3 bars of pressure (which would only add a couple of grams to the weight) was to monitor the integrity.

[TriCub]

Having a piont like that would be handy if any repairs where needed as welding Ti needs sheilding gas on the inside as well the outside when TIG welding.

Got to build me one of those RC flying mowers looks like a hoot.

[Bully fanatic]

Yes I got the weight wrong Mark. That is what I get for relying on my failing memory. I had 3.8 in my mind for some reason. I`ll blame old age!

[Mark K]

........ I`ll blame old age!

Graham, I'd put you somewhere in the same age group as me. The problem isn't that you're old.
The problem is that you were born a hell of a long time ago.
Don't admit to any of that 'getting old' stuff.
After all, you've seen what happens to old bikes - they get chopped up and put back together in ways you'd never want to think about.

[matt_c]

Same reason you pressurise a drag line boom Dave: crack detection.