YS140L Problem

[Peter Pennisi]

Interesting theories about the DZ's and the cam failure issues. I have what
I believe is an early model DZ. So far it has destroyed 3 cams and cranks in
approximately 120 flights. I am glad that I am not paying for the repairs.
Hopefully they will get it right this time. Still flying my good ole trusty
140L.

 

Peter

 

 

  _____  

From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org] On
Behalf Of Karl G. Mueller
Sent: Thursday, 3 June 2004 6:54 AM
To: discussion at nsrca.org
Subject: Re: YS140L Problem

 

Buddy,

 

Some of the little changes are hard to figure out wether they were done

on purpose or in some cases they just forgot the operation to drill a hole

in the crankshaft to provide lubrication to some of the suspect areas.

I have a 140L shaft that has a plug in it and one that doesn't, just the
hole

in the center of the shaft going nowhere. Did they forget something or is 

it like that on purpose? Go figure!

 

 

Karl G. Mueller
kgamueller at rogers.com

----- Original Message ----- 

From: BUDDYonRC at aol.com 

To: discussion at nsrca.org 

Sent: Wednesday, June 02, 2004 2:54 PM

Subject: Re: YS140L Problem

 

Karl

I have an L crankshaft that has an exit/entry hole bored into the hollow
shaft located just behind the seal location. On the YS-140 Sport a hole in
the same location provides case pressure to the diaphragm. I don't know it's
purpose on the YS-140L, It seems that the hole was plugged on some of the L
model engines. RE: Don Ramsey's post of a couple of days ago. Don says
without the plug he is getting 300 more RPM with his YS-140.

Buddy

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