Message-
From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On
Behalf Of Steve Glover
Sent: Thursday, April 14, 2005 10:18 PM
To: KRnet
Subject: KR> Correction on Crank
Hi Netter's,
Well, It appears I had spoken too soon. All initial indications pointed to
a broken crank o
Engineering Alternatives, Inc.
www.engalt.com
-Original Message-
From: krnet-bounces+brian.kraut=engalt@mylist.net
[mailto:krnet-bounces+brian.kraut=engalt@mylist.net]On Behalf Of
Steve Glover
Sent: Friday, April 15, 2005 8:39 PM
To: KRnet
Subject: RE: KR> Correction on Crank
Did you h
>I had a lot of problems at one time with the engine going very rich at mid
>range power settings. It was fine at high power and idle. When I reduced
>power sometimes it would foul a plug and give a pretty good vibration.
It hasn't done that for the 200 hrs I've flown it. The needle I have in
Hi Netter's,
Well, It appears I had spoken too soon. All initial indications pointed to
a broken crank on the VW. We pulled the engine down and did not see
anything unusual. I took the crank over to a well known machine shop in the
area and had it magnafluxed and dye glowed. Zip, zilch, nada..
If anyone has any ides, I'm listening. We are
>putting the engine back together and I will fly it until the Corvair is
>ready. Hopefully whatever the anomaly was, with the rebuild (Again), it
>will be gone.
>Steve Glover
+
I'm not much of
Cross firing of spark plugs can cause an engine bad vibration too. I once
seen a Case magneto (a tractor company that made aviation parts) that had
carbon tracking in the distributor block which allowed a wrong plug to fire
at the wrong time.
Brant Hollensbe
bhollen...@mchsi.com
>From there I'd make a giant leap and say check ignition. Wires,
plugs for fouling, distributor, coil, etc...
I would lean toward ignition but it was occurring on both the electronic and
the mag. Two separate sets of wires and systems. None of the valves
appeared to be sticking and all
Hello Steve
>From my experience I can only offer three possibilities. My first
experience with engine vibration was from a spinner that was about to depart
the engine by way of taking a chunk out of my prop. After it departed the
engine returned to smooth. It was very violent. Second, was th
Hello Steve
>From my experience I can only offer three possibilities. My first
experience with engine vibration was from a spinner that was about to depart
the engine by way of taking a chunk out of my prop. After it departed the
engine returned to smooth. It was very violent. Second, was the c
eat. Russ
Breckenridge,MN
- Original Message -
From: "Steve Glover"
To: "KRnet"
Sent: Thursday, April 14, 2005 7:17 PM
Subject: KR> Correction on Crank
> Hi Netter's,
>
> Well, It appears I had spoken too soon. All initial indications pointed
to
> a brok
Thanks Russ, I'll check that...
Steve
-Original Message-
From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On
Behalf Of Russ Fenlason
Sent: Friday, April 15, 2005 2:07 PM
To: KRnet
Subject: Re: KR> Correction on Crank
Steve: just a thought but it happened to me.
: Friday, April 15, 2005 4:29 PM
Subject: RE: KR> Correction on Crank
Cracked flywheel maybe??
Just a shot in the dark here but is your engine mount and its attachment to
the firewall as well as to the motor secure?
I'm going to double check that tomorrow...
Steve
Cracked flywheel maybe??
_
Nope, looked at that already...
Steve
Steve,
Did you have the camshaft magnafluxed also? Make sure the camgear is still
properly affixed to the end of the cam. Rings, pistons and rods OK? Were the
heads and head studs torqued and all came apart with no looseness?
Also check the valve & valve guides for proper clearance--Not just
Did you have the camshaft magnafluxed also? Make sure the camgear is still
properly affixed to the end of the cam. Rings, pistons and rods OK? Were
the heads and head studs torqued and all came apart with no looseness?
--
We didn't magnaflux the cam but the gear is tight
light reports any
more!!
Best regards and good-luck with the fault finding.
Wanna-bee
Ivan Miller
- Original Message -
From: "Steve Glover"
To: "KRnet"
Sent: Friday, April 15, 2005 4:17 AM
Subject: KR> Correction on Crank
> Hi Netter's,
>
> We
If no obvious defects in the engine can be found please check the prop
flange and bolts.
--
We didn't mag the hub but the runout was only .002 on the bench. On the
plane is was more like .009, which is what led us to b
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