Docstrader valvegear simulation

Docstrader valvegear simulation

This topic has 3 replies, 2 voices, and was last updated 8 March 2010 at 07:59 by Granville Askham.

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7 March 2010 at 17:04 #49497
Granville Askham
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@granvilleaskham41640
I’m trying to refine a Walshaerts valvegear driving a slide valve for my latest loco. It looks good but the simulator will not allow me to come out of mid-gear. No matter what, it throws up a flag every time saying, ‘Invalid floating point operation’ Has anyone any ideas, please, I’m getting frustrated!

Granville Askham
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7 March 2010 at 17:04 #935
Granville Askham
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@granvilleaskham41640
7 March 2010 at 20:35 #49507
John Baguley
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@johnbaguley78655
Hi Granville,

can’t give you a definitive answer but I had this myself some time ago. I can’t remember if it was with the Dockstader software or one of Bill Hall’s versions. It’s actually a windows error message, not the valve gear software. I did a search on the net for ‘Invalid floating point operation’ which came up with loads of results and suggested cures. I eventually found something that did cure the problem but I can’t remember what it was

Hopefully someone with a bit more computer knowledge might be able to point you in the right direction.

John
8 March 2010 at 07:59 #49519
Granville Askham
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@granvilleaskham41640
Thanks John,

You pointed me in the right direction, it sounds like a job for my grandson!

Gran
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