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Hi! Kelly
I must of mist Lynn's VST system, I don't understand what those
measurements are. I opened another 91 13b NA today & to my
dismay it was toast (supposably a Mazda rebuilt in '99)
I measured at 90deg. to the apex slots with a digital vernier
caliper the reading I got on this one were from 2.26 to 2.43 mm the new
2mm seal is 1.91 to 1.94 wide, the max allowable clearance is 0.1mm
therefore in this case the widest width should be 1.04mm so this slot
has 0.39 mm excess wear at the slot opening. Has anyone
actually measured a new rotor? I guess I will buy 2 new rotors
now
Georges
-------Original
Message-------
Date: 04/17/05
15:33:47
Subject: [FlyRotary]
Re: Apex Seal Groove Wear
Georges,
Have you tried Lynn's VST (Vertical Seal Test)
for apex slot wear and if so
what measurement did you get ? Lynn suggests that 3/16 inch (.1875
inch)
or 4.7625 mm as the outer limit........Of course after all the
posts on this subject
everyone may have their own personal limit !!
--
Kelly Troyer
Dyke
Delta/13B/RD1C/EC2
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Original message from "Echo Lake Fishing Resort (Georges Boucher)"
<echolakeresort@telus.net>: --------------
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Hi! Leon
You have a point regarding air filter use on water, when Mt
St Helen (Washington state) erupted the first time I had a shop in
Vancouver BC Canada (about 300miles away) even at that distance,
one of the fleets of vehicle that we serviced had to have the air
filters replaced every second day( even a week the
eruption).
I made the crack about no need for an air filter for a
float plane in Canada, but actually much of the time float planes
are started on the lake shores with the engine above the ground
instead of the water. The other thing about air filters on an
airplane, an alternate air source (like a slightly spring loaded
flat) should be supplied ( in a float plane case , water could
splash onto the element & freeze solid at altitude, blocking
air to the intake). On the rotor apex seal subject, I agree with
you regarding the amount of wear on the rotor seal slot &
seal has to be a lot more than Ed's to spit out the seals. I
drove my used engine supplier nuts yesterday, measured 6
different rotors & all were from 2.13 to 2.28 mm,
he old me they use these rotors regularly for a long time &
never had a problem. Mine are 2.17 to 2.26mm, So I guess I'l have
to buy new rotors.
Georges Boucher
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