[Alberg30] propeller for knotmeter

[Bob Lincoln]

Lorelei,

If your knotmeter dial says Sumlog, its a German VDO Sumlog.
To replace the impeller or propeller you need to match the knot
scale on the dial. Probably a white impeller from Holland Marine.
You have a mechanical knotmeter that is like an old car speedometer,
and it uses a cable that runs from the propeller inside a hose up to
the cockpit display.  These things are somewhat old technology thus
you have problems fixing them.  Your prop will cost about $ 30-40
Cdn, plus a wrench to take it off and put on. But your cable is old
and if it is bent or kinked it just might break.  To replace the
cable is another $ 150 Cdn.  I don't know if they are made any more.
Sumlog is all electronic now.  So by this time you are getting up in
price to a new cheap electronic knotmeter.  I can't offer any other
advice.  I took everything on mine off and cut the cable at the bad
spot and reattached everything and will drag if off the stern this
summer.  This meant plugging the holes in the hull.  If it doesn't
work I will just think about knots and use my gps or stay near the
coast.  A knotmeter isn't that important.

Bob Lincoln
Indigo #590
  -----Original Message-----
  From: public-list-admin at alberg30.org
[mailto:public-list-admin at alberg30.org]On Behalf Of
Lorelei23 at aol.com
  Sent: Thursday, March 08, 2001 1:53 PM
  To: public-list at alberg30.org
  Subject: [Alberg30] propeller for knotmeter

  .    Would or could this be the
  Sumlog that someone mentioned from Holland Marine in Canada?

  Help please.        Lorelei
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