Matronics Email Lists Forum Index Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
 
 Get Email Distribution Too!Get Email Distribution Too!    FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Yak-List Digest: 7 Msgs - 07/10/18

 
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> Yak-List
View previous topic :: View next topic  
Author Message
mmlipaz(at)gmail.com
Guest
PostPosted: Wed Jul 11, 2018 5:56 am    Post subject: Yak-List Digest: 7 Msgs - 07/10/18 Reply with quote
Phil, you shouldn't get 2350 RPM on a stationary run up. It will be so when your plane is moving on take off, when the aerodynamic resistance on the blades is lessened as the prop is moving forwards.
Try it out and see.
Pipes.

Sent from my iPad

[quote] On Jul 10, 2018, at 11:47 PM, Yak-List Digest Server <yak-list(at)matronics.com> wrote:

*

==================================================
Online Versions of Today's List Digest Archive
==================================================

Today's complete Yak-List Digest can also be found in either of the
two Web Links listed below. The .html file includes the Digest formatted
in HTML for viewing with a web browser and features Hyperlinked Indexes
and Message Navigation. The .txt file includes the plain ASCII version
of the Yak-List Digest and can be viewed with a generic text editor
such as Notepad or with a web browser.

HTML Version:

http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter 18-07-10&Archive=Yak

Text Version:

http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter 18-07-10&Archive=Yak


================================================
EMail Version of Today's List Digest Archive
================================================


----------------------------------------------------------
Yak-List Digest Archive
---
Total Messages Posted Tue 07/10/18: 7
----------------------------------------------------------


Today's Message Index:
----------------------

1. 07:30 AM - Re: Circuit breaker size for pitot heat? (Rob Rowe)
2. 09:44 AM - Re: [Non-DoD Source] Re: Circuit breaker size for pitot heat? (Bitterlich, Mark G CIV NAVAIR, WD)
3. 10:17 AM - Re: [Non-DoD Source] Re: Circuit breaker size for pitot heat? (Jan Mevis)
4. 04:44 PM - Hangar fans and lights (Jon Blake)
5. 05:01 PM - Re: Hangar fans and lights (Greg Wrobel)
6. 07:56 PM - Re: Hangar fans and lights (\)
7. 08:31 PM - Housai 2350 Redline (PS)



________________________________ Message 1 _____________________________________


Time: 07:30:35 AM PST US
Subject: Re: Circuit breaker size for pitot heat?
From: "Rob Rowe" <yak-list(at)robrowe.plus.com>


FYI - be aware that the pitot heater has a simple transistor circuit that only
drives the green 'on' lamps (see attached diagram) when the heater is consuming
power i.e. it monitors that the heater is actually working, not just being
supplied with a voltage.

So if the heater, resistor or associated wiring goes open circuit, or the transistor
fails, the lamps will not light ... that could lead you to consider that
the 10A breaker has died.

The resistor (T4) & transistor (T5) can be found in the relay box on bulkhead 6
(at the back of rear instrument panel) if you want to check out the circuit.

Hope this helps with your fault finding.

Rob R


Read this topic online here:

http://forums.matronics.com/viewtopic.php?p=481517#481517


Attachments:

http://forums.matronics.com//files/pitot_heat_194.jpg


________________________________ Message 2 _____________________________________


Time: 09:44:23 AM PST US
From: "Bitterlich, Mark G CIV NAVAIR, WD" <mark.bitterlich(at)navy.mil>
Subject: RE: [Non-DoD Source] Re: Circuit breaker size for pitot heat?


Once again you taught me something I did not know!

Mark

p.s. Where do you get these diagrams from that show you this, that are in freaking
English? Or: -?


--

- The Matronics Yak-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List
Back to top
wlannon(at)shaw.ca
Guest
PostPosted: Wed Jul 11, 2018 9:32 am    Post subject: Yak-List Digest: 7 Msgs - 07/10/18 Reply with quote
That would be very true if the propellor was fixed pitch or even a
two-position type.

However this is a constant speed prop. controlled by a fly weight governor
that "knows" nothing about blade angle - only RPM.
Pre-flight (static) check of a correctly adjusted prop./gov. system (CJ 6
with Huosai 6a) with the RPM control set to TO would show on reaching full
throttle slightly over 2350 RPM (+ 15 to 25) momentarily with an immediate
reduction to 2350 as the governor responds.

On take-off as the propellor load decreases the governor senses an overspeed
condition and causes the pilot valve to slightly open the governor oil
passage to drain
allowing the blade counterweight force to move the blades toward coarse
pitch.

Walt
--

- The Matronics Yak-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List
Back to top
wlannon(at)shaw.ca
Guest
PostPosted: Wed Jul 11, 2018 1:36 pm    Post subject: Yak-List Digest: 7 Msgs - 07/10/18 Reply with quote
Further:-----

One (me) tends to forget that these are not altitude engines so the full
power run-up I have described is subject to variation in engine power output
which, among other things, is a function of field barometric pressure. So,
while I am confident that my description is correct in standard air up to at
least 1200 ft. ASL I cannot confirm it is valid above that.

Walt
-

- The Matronics Yak-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List
Back to top
Display posts from previous:   
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> Yak-List All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group