Brian Whatcott wrote:

On Sun, 30 Nov 2003 03:43:07 GMT, Rick
wrote:

Brian Whatcott wrote:

A hole in the motor case, for a tube and small bronze bellows,

Don't even need that complication. The existing seal should be adequate
for a compensated system. Drill and tap the casing for a tube fitting
and attach a foot long piece of surgical tubing. Fill the motor with
light biodegradable hydraulic oil, and top off through the tubing. Stick
a rubber plug in the tubing end to seal it and it's done.

Rick

Delightfully simple. Not sure about the long-term compatibility of
latex and hydraulic oil though.

Brian W

So get a length of the clear silicone rubber tubing used in peristaltic
pumps. That stuff is very flexable and has excellent chemical resistance.
My only real concern would be is the motor insulation resistant to the oil
chosen and what is going to happen if its got sintered bearings if they
are running in a bath of potentially the wrong type of oil?
--
Ian Malcolm. London, ENGLAND. (NEWSGROUP REPLY PREFERRED)
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'Stingo' Albacore #1554 - 15' Uffa Fox designed, All varnished hot moulded
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