Today's Message Index:
----------------------
1. 03:13 AM - Props and Pitch (Craig Payne)
2. 03:44 AM - Re: Housai 2350 Redline (Harv)
3. 04:49 AM - Re: Housai 2350 Redline (PS)
4. 05:39 AM - Re: Housai 2350 Redline (woodja51)
5. 05:49 AM - Re: Housai 2350 Redline (PS)
6. 05:49 AM - Re: CJ Mag Coils - Test data required (Harv)
7. 09:21 AM - Rooms Available at Oshkosh (JON BLAKE)
8. 05:20 PM - Re: [Non-DoD Source] Re: Circuit breaker size for pitot heat? (Bitterlich, Mark G CIV NAVAIR, WD)
9. 09:38 PM - Re: Housai 2350 Redline (PS)
10. 10:19 PM - Nanchang Flap Problem (Byron Fox)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
Can't resist this discussion. Assume the Sukhoi AB Method. That is place A
lever to the firewall, then take the other lever, place it next to the
first one and leave it Be. The result is full throttle and flat pitch.
In this condition, a constant-speed counter-weighted prop acts like a fixed
pitch prop, excepting the condition of a "runaway" prop on big radials
where the governor has failed. I have experienced interesting results with
both Huosai and B530-TA props.
Fiddling with the Huosai prop for a grudge race, allowed 2600 RPM which
yielded 170 KIAS. So what if I ended up selling the engine for parts on
eBay, I wanted an M-14P anyway. On the M-14P, with the Paddle Blade set a
little finer than recommended, I lost some range of governor control but
was able to make some of the best landings in my life by pushing up the
prop just before touchdown and feeling that big speed brake set the CJ down
with no sensation of touchdown.
So what worked best? Turned out for me that staying within "book" settings
yielded the best, consistent result. Use any of the accepted methods for
measurement but do it as accurately as you can.
Craig Payne
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Housai 2350 Redline |
Phil
I had a similar issue initially as the AC came from the PLA and couldnt quite get
to the redline rpm.
I moved the governor stop and that made a little difference but it was unpredictable
and thats when we noticed the teleflex cable clamp which is plastic (located
located up on the gill shutter frame) was cracked and allowing the outer
tube to move. We remade this part in Ali
Check that first and let us know.
Rgs
Harv
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=481600#481600
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Housai 2350 Redline |
I checked the cable housing attach, it is fine. I will try adjusting the cable
length and then move the arm on the governor next.
Thanks
Phil
--------
Phil
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=481602#481602
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Housai 2350 Redline |
wind the fine pitch governor stop away from the arm a few turns and try again.
Set your blade angel back to std of 16 deg+/- .1' and see what happens. That said,
2250 is more than enough power and saves wearing the engine out..Of course
your engine is able to produce full power too I would assume?
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=481603#481603
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Housai 2350 Redline |
I have tried different blade angles and moving the stop. My pitch control needs
more travel at the fine pitch setting is my guess. Moving the governor arm a
notch may help. I agree, 2250 RPM is plenty of power, but not set by the book
which bugs me..I will track this down :?
Thanks
Phil
--------
Phil
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=481604#481604
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: CJ Mag Coils - Test data required |
Just an update to complete this thread
Coils went off to a specialist firm who have been doing mag/coil winding for over
50 years. Their procedure is to heat soak, put them in a test rig and measure
the output (there's also a set of points in the test which are set at 5.5mm).
One had an output of nothing and the other produced a very weak spark so both
items have been rebuilt.
Interestingly these are virtually identical to that used in a very old Bentley
with slightly different specs which were established after dissecting.
Looking forward to getting the units back, fitted, and enjoying big fat sparks
at the plugs for smooth running. Zero shelf time is a nice plus too.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=481605#481605
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Rooms Available at Oshkosh |
Hey Everyone,
I have two rooms that became available ( one do to a broken foot and the other
do to Family issues) out of four houses three miles from the gates at Oshkosh.
$800 per room for Sunday July 22nd to Sunday July 29, contact me off list
if interested.
Scott "Munchie" Andrews
RPA Southwest Regional Director
602-705-4413
Message 8
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: [Non-DoD Source] Re: Circuit breaker size for pitot heat? |
Rob,
I have seen those components in the Russian antennas, but for the most part ignored
them since when I have had them apart, it was always AFTER I had replaced
them with a commercially made COMANT of one model or another. It seems to me
that I have one laying around someplace and unless you have already done it,
the best thing to do would be to use a Vector Network Analyzer to actually measure
loss and band pass / reject characteristics.
The thing that bothers me regarding the discussion is the fact that (as you mentioned)
we are dealing with square wave energy, which by it's very nature has
an infinite amount of harmonic energy. Thus it represents broad banded "hash"
(if you will) that encompasses a large part of RF spectrum... soup to nuts.
So the question becomes whether or not this energy actually makes it all the way
up to VHF ... which if it does, no filter is going to stop. On the other hand,
if the energy is in the lower portion of the spectrum (which I believe it
usually is) and what is happening instead is that the energy is making it into
the first RF amplifier stage and is then overloading it, causing de-sense and
AGC pumping, then a high pass filter (pass anything above 108 MHz) would indeed
make a positive impact.
Have you measured the value of the components Rob, and then reverse engineered
the characteristics based on formula, or have you actually swept it and recorded
the results? No sense re-inventing the wheel here.
Are we sure as well that the design was not simply intended to keep VHF transmitter
energy out of ADF receiver input? I.E. That the intent really was to reduce
spark energy and not just re-direct Hi/Low frequency RF energy? It seems
to me that this would be very hard to determine without making signal to noise
measurements at the receiver, using a floating Sig Gen Reference Antenna, with
engine both running and not running. If the loss of the filter itself was high
enough, the result could easily sound like a small reduction in spark noise
.... thus hard to evaluate accurately without the right equipment on hand.
Bottom line, I think with a little effort I could graph the characteristics of
their design with an on-hand Anritsu VNA ... again of course unless you have already
done that.
Interestingly enough, if you want a commercially made quick duplicate of the premise
itself, both Diamond and Comet make Diplexers that will accomplish the objective.
Diamonds model MX62M passes 76 - 470 MHz and the second port passes
1.6-56 MHz. Just put a small 50 ohm load on the low pass port, and hook the
high pass port to your VHF radio. The high pass port has a 0.3 dB loss, which
is no big deal of course. Comet makes their CF-706A with about the same characteristics.
Both will easily handle any aircraft radio output. So if you want
to jump right to the end of the story, these devices will do the trick, for
about $75 or so.
Mark
________________________________
From: owner-yak-list-server@matronics.com [owner-yak-list-server@matronics.com]
on behalf of Rob Rowe [yak-list@robrowe.plus.com]
Sent: Wednesday, July 11, 2018 8:50 AM
Subject: Yak-List: [Non-DoD Source] Re: Circuit breaker size for pitot heat?
Mark & Jan, thanks for your kind words & for the record " " ... but latterly
Goggle translate is my friend and before that OCR / translation software :-)
Over the last decade I've re-drawn all the wiring diagrams by hand having reverse
engineered all the originally supplied schematics and researched the key devices
to find out how they work.
Hence our free ranging discussions over the years on voltage regulation, fuel displays
and 'shower of sparks'!
The work continues and only recently have I gained an understanding of how the
stabilising transformer helps manage voltage regulation on high current load transitions
and why Baklan replacement radios appear to work better with the original
antenna than new ones.
On that topic ... the original antenna has a crude 1st order RC high pass filter
/ splitter at the base of the antenna for the radio feed, and an LR low pass
to the ADF sense feed, so the bulk of square wave ignition noise harmonic energy
is filtered before it gets to the radio RF stage.
As radio is more your area of expertise than mine Mark I'd welcome your thoughts
on finding a higher order in-line high pass filter suitable for a transceiver
to work with replacement antennas.
Rob R.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=481553#481553
Message 9
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Housai 2350 Redline |
I finally moved the splined insert within the governor control arm one spline which
gave me 100 RPM more, then it was Miller time.
Thanks to all who offered solutions and suggestions.
--------
Phil
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=481624#481624
Message 10
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Nanchang Flap Problem |
I'm completely flummoxed !
1. It began this way. Several days ago, I noticed that when the front
seat flap handle was put in the down position, air came hissing out of the
backseat flap valve at a great rate. The latter of course in the neutral
position.
2. With the flap extended, air hissed merrily away until I put the
forward flap handle in the neutral position. Works, but not right. Right?
3. Put the forward flap handle up. Flap retracts as normal.
4. So what's with the aft flap valve? With the forward handle neutral,
the aft flap handle works normally up and down.
So today, I did the following:
1. Thinking there must be something wrong with the aft flap valve,
(although only about three months since purchased new from Doug), I removed
it and capped off the three air lines running into it with 1/8 NPT caps.
Thereby, by-passing the aft valve completely.
2. Now to test the fix. Put the forward flap handle down, and the flap
extends smartly.
3. Put it up and NOTHING HAPPENS! The flap just stays down. WTF!
4. Called and whined to Doug. He was perplexed too, but suggested I
replace the forward flap valve with the newer one I removed from aft.
5. Did it. NO LUCK. Same result. Goes down, but won't come up.
Any thoughts? I'm baffled. I keep staring at the CJ's pneumatic diagram
and rereading Craig Payne's air system guide, but no bulb goes off over my
ever balding head.
Many thanks,
--
... Blitz
Byron M. Fox
80 Milland Drive
Mill Valley, CA 94941
415-307-2405
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|