Today's Message Index:
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0. 12:27 AM - Last "Official" Day Of The List Fund Raiser! (Matt Dralle)
1. 12:18 AM - Doug Sapp... (Jay McIntyre)
2. 10:30 AM - Re: Shinden33 Rough Running (Yak Pilot)
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| Subject: | Last "Official" Day Of The List Fund Raiser! |
Dear Listers,
Well, its November 30th and that means three things...
1) Today I am now officially 43 years old... (arg...)
2) It marks that last "official" day of the List Fund Raiser!
3) Its the last day I will be bugging everyone for a whole year! :-)
If you use the Lists and enjoy the content and the no-advertising, no-spam, and
no-censorship way in which they're run, please make a Contribution today to support
their continued operation and upkeep. Your $20 or $30 goes a long way
to further the List operation and keep the bills paid.
I will be posting the List of Contributors next week, so make sure your name is
on it! :-)
Thank you to everyone that has made a Contribution so far this year! It is greatly
appreciated.
List Contributions: http://www.matronics.com/contribution
Best regards,
Matt Dralle
Matronics Email List Administrator
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Doug, please contact me off list on cjaviator@gmail.com I have been trying
to contact you for a while now with no response.
Also, please hold 2 of those landing light bulbs for me!
Cheers, Jay
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| Subject: | Shinden33 Rough Running |
Has anyone suggested checking the valve lash yet? A cylinder will have good compression,
good ignition, etc., etc., but if the valve lash is WAY WAY out of
adjustment... and that can happen if it has not been adjusted in years, or...
was adjusted by someone not quite up to speed on how to do it... then the engine
can indeed run rough.
Mark Bitterlich
shinden33@earthlink.net wrote:
Yup - all cylinders were 69+/80
S
-----Original Message-----
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com]On Behalf Of Terry Lewis
Sent: Tuesday, November 28, 2006 3:36 PM
Subject: Re: Yak-List: Shinden33 Rough Running[LashBack]
Did you run a compression test on these three cylinders?
Terry Lewis
----- Original Message -----
From: shinden33@earthlink.net
To: yak-list@matronics.com
Sent: Tuesday, November 28, 2006 9:16 AM
Subject: RE: Yak-List: Shinden33 Rough Running[LashBack]
Dennis,
We've done all tests/run-ups on both mags and each mag separately with identical
results. I did pull the cap on the left mag and checked everything that you
mentioned below and checked out good. It would have to be spectacular luck
(good or bad your choice of words) to have identical ignition failures on both
mags at the same time or to have the time go out the same amount. Unless of
course, there is some form of crossover I am not aware of. Thanks for the advice
though.
Scott
-----Original Message-----
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com]On Behalf Of A. Dennis Savarese
Sent: Tuesday, November 28, 2006 4:47 AM
Subject: Re: Yak-List: Shinden33 Rough Running[LashBack]
You did not say you tried isolating the problem to one mag or the other? Have
you looked inside the magnetos under the mag caps and checked for adequate lubrication
on the cam? Also look for obvious binding at the points. Verify the
point gap is between .25 mm and .35 mm or .010 to .14. Ideally, .3 mm or .012.
Look inside the mag cap for carbon tracks. Gary's suggestion is also very
sound and highly recommended. Check the timing on both mags. Let me know
what you did or found.
Dennis
----- Original Message -----
From: ggg6@att.net
To: yak-list@matronics.com
Sent: Monday, November 27, 2006 10:16 PM
Subject: RE: Yak-List: Shinden33 Rough Running[LashBack]
Have you checked the spark plug leads with a high tension lead tester, it sounds
like the leads may be breaking down under a load... Gary
-------------- Original message from "Scott T Glaser (E-mail 2)" <shinden33@earthlink.net>:
--------------
Thanks for the advice guys. I've tried everything short of installing
the plug kit. I'm not sure that's the issue.
The roughness seems to be getting worse & I did discover using a laser thermometer
and the WD40 test that the #5, 7 and 9 cylinders seem not to be firing.
We measured the temps of the exhaust stacks just after shut down and all were
220+ deg except those three which were 112ish. We also did the WD40 test (sprayed
WD40 on the exhaust just aft of each cylinder). Again it showed that these
3 cylinders were not operating properly (WD40 did not vaporize). I have pulled
and checked all the plugs, checked the left mag (another suspected problem),
checked all the wires, checked the fine fuel filter, checked the carb fuel
filter, compression checked all the cylinders (all 69+/80) and have not found
the problem. I've consulted with local mechanics who seem to be out of ideas.
I'm about ready to call in an M14 mechani c.&nbs p; Let me know if anyone has
any suggestions.
Scott
8252
-----Original Message-----
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com]On Behalf Of A. Dennis Savarese
Sent: Monday, November 13, 2006 5:36 AM
Subject: Re: Yak-List: Shinden33 Rough Running
[LashBack] The fine fuel filter is the black canister above the yellow sphere
on the right side of the firewall. On the bottom side of the black canister
is a 27 mm nut, usually safety wired. Remove the 27 mm nut and extract the fuel
screen. It will be a little tight coming out. Clean the screen with a tooth
brush and be sure to inspect the inside of the cap you removed for debris.
Make very sure the small rubber O-ring is on the top end of the screen when it
comes out and when it goes back in.
The American Champion REL37B's are not the plugs in the conversion kit. If you'd like to read about the conversion kit, go to my web site, www.yak-52.com, and click on the MODIFICATIONS button, then click the PLUG CONVERSION button. Or click on the link on the home page. By comparison, the plugs in the conversion kit will cost you about $2 per plug when you have to replace them. ONE Champion REL37B will cost almost as much as 18 plugs. The kits have been shipped all over the world and I have kits in stock.
Dennis
----- Original Message -----
From: Shinden33
To: yak-list@matronics.com
Sent: Sunday, November 12, 2006 11:03 PM
Subject: RE: Yak-List: Shinden33 Rough Running
[LashBack]
To all ye salesman - already have the american plugs. Thanks for the suggestion
though.
Working on the load testing of the system. Where is the fine fuel filter?
S
-----Original Message-----
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com]On Behalf Of MICHAEL ROEHR
Sent: Sunday, November 12, 2006 5:08 AM
Subject: Yak-List: Shinden33 Rough [LashBack] Running
[LashBack] Suggest you also check the fine fuel filter and clean if necessary.
The spark plug conversion is definitely the way to go regardless of this
problem.
Mike Roehr
beach@digitalexp.com
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