DJB Robert

[DolwyddelanLightRail]

No worries! Normally it is James, but you'll be lucky to find someone who knows me that actually calls me by that name

[laurence703]

I think in fullsize practice its not considered the best because on uneven track the valve gear essentially shifts as the distance between the wheel and the block goes up and down with the springing and can, on absolutely dire track, loose timing altogether...

There is a way to counter this by mounting the block onto the top of the bearing so that it stays the same distance from the wheel no matter what state the track is in it will not affect the valve gear...

That's what I've been taught but do not take it as correct... it was a long time ago that it was explained to me...

[jabsteam]

Luckily the Robert is an unsprung engine - no valve gear timing issues.