Page 22 – Key Publishing

Christer

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February 5, 2002 at 1:38 pm in reply to: A Rar(ish) bird these days #2115740

Christer
Participant

RE: A Rar(ish) bird these days

Swedish ex-beauty, probably scrapped with most of them.
In 1998, when the last squadron flying the J35J was sent on conversion training onto the JAS39, disassembly and recycling commenced almost immediately.

February 4, 2002 at 11:40 pm in reply to: Is this too close for warbirds ? #2115775

Christer
Participant

RE: Is this too close for warbirds ?

Phil,
it looks kind of strange, in this piccie the trailing aircraft seem to fly higher than the leader with an obstructed view.
What I´ve learned is that when flying in formation the trailing aircraft flies lower than the leader, or whichever is ahead of them, to give them a good view of it. I think that it´s something like half a span to a full span behind, the same below and to the side. The tricky bit is for all aircraft to have the same separation for it to look good.
I think that pilots try to keep the formation tight since then they would all be flying in the same gust. With a bigger separation the aircraft would be popping up and down independently when entering separate gusts or the same gust at different times.

No matter what, it´s a nice piccie!

Christer

January 28, 2002 at 10:13 am in reply to: Me-262 new builds. #2116774

Christer
Participant

RE: Me-262 new builds.

Hi Glenn,
this homepage might be of interest to You!?

http://www.stormbirds.com/project/index.html

Regards,
Christer

January 25, 2002 at 2:16 pm in reply to: Lancasters lost in Russia #2116990

Christer
Participant

RE: Lancasters lost in Russia

Regarding Easy Elsie,
I don´t think it´s owned by anyone except the government probably having given it some kind of monumental status.
I´m sure though that it´s not up for grabs.

January 24, 2002 at 6:25 pm in reply to: Lancasters lost in Russia #2117084

Christer
Participant

RE: Lancasters lost in Russia

Guys,
there is a swedish home page at this address:

http://www.flygarkeologi.cjb.net/

When it opens click HAV. PLATSER and then the third and last links from the top for pictures of Easy Elsie. The pictures were taken in 2000 and 2001 respectively.

Christer

January 24, 2002 at 12:22 am in reply to: Technical Teaser #2117140

Christer
Participant

RE: Technical Teaser

Hi again Keith!
Thanks for the latest information, I´ve got one last question, at least for the time being:

Everything that is rotating has a critical RPM where vibration is the worst due to resonance. E.g. an electrical motor is accelerated to a RPM above the critical value and is operated well above.
Some horisontally opposed engines in general aviation aircraft have a narrow RPM range, say 2.300-2.350 RPM where it must not be run which, I assume, is due to the above reason.
What´s the situation on radials?

Thanks in advance,
Christer

January 23, 2002 at 9:58 pm in reply to: How's this for an early aeroplane? #2117205

Christer
Participant

RE: How’s this for an early aeroplane?

[updated:LAST EDITED ON 23-01-02 AT 10:10 PM (GMT)]Hi Keith,
am I too slow with new questions? Well, it seems like it since You´ve had time to dig out these nice piccies! 😉

The Bleriot XI was licence built in Sweden in Landskrona, the town were I was born.
One of these has been rebuilt and is flying but, not by power of an Anzani which was substituted by a LeRhône rotary. To clarify, the engine was substituted in production not under the rebuild.
This was controlled by a button on the stick which short circuited the ignition and it could be shut of only for short periods, otherwise the cylinders would overflow by fuel and castor oil that was taken in continuously.
I guess it was the same with the Anzani!?

Christer

I forgot to mention that it was built under license by Enoch Thulins Aeroplanfabrik under the designation Thulin A.

January 23, 2002 at 3:44 pm in reply to: Here´s one for Halibag …… #2117304

Christer
Participant

RE: Here´s one for Halibag ……

Halibag,
I agree with Ja, not bad at all!
I guess that You have pretty good photo editing software?
I´ve only got the one supplied with my scanner and it can´t copy colours (if it can I don´t know how).
Starting with a higher resolution picture it would probably require a trained eye to see that the bag was ever there!?

The first time I encountered a fixed picture was when visiting friends in Germany. One of them is thin and the other one quite big and the picture taken of them looked OK. There was one thin guy, one big guy and I recognized the faces. Something was wrong however and at a second view i noticed that the heads had been shifted!

Christer

January 22, 2002 at 11:23 pm in reply to: European Warbird Accident Reports #2117363

Christer
Participant

RE: European Warbird Accident Reports

Hi Seafuryfan!

Regretably I have no answer to Your question but, the timing of Your posting gives me the creeps. I was just trying to find information on the accident of WG 655 but nothing on AAIB since it occurred too long ago. I read something, somewhere, that it was caused by a piston seizure. Maybe You can fill me in or point me in the right direction?!

Regards,
Christer

January 22, 2002 at 9:46 pm in reply to: Technical Teaser #2117388

Christer
Participant

RE: Technical Teaser

Keith,
thanks for the tip about the book.
Bill Gunston has been quite busy as an author and I believe that he has written two books on engines, the first less and the second more comprehensive!? If I´m correct I´ll opt for the second one!

Next question:
The system with one master connecting rod and six articulated connecting rods per row (if we stay with the Hercules, that is), do that give a different compression ratio for the cylinder with the master rod compared to the others?
If not, how are the articulated rods arranged to eliminate the difference in throw which seem obvious, at least from the crude drawings that I´ve seen?

Thanks,
Christer

January 22, 2002 at 4:52 pm in reply to: So which Fury is this ? #2117451

Christer
Participant

RE: So which Fury is this ?

I don´t think that P&W R4360’s are fitted to many Sea Furies, the Wright R3350 Cyclone being the more common substitute for the Centaurus.
I may be wrong though ……

January 22, 2002 at 2:39 pm in reply to: Technical Teaser #2117462

Christer
Participant

RE: Technical Teaser

Halibag,
this is a little trickier due interaction between the two rows but this is how I figured it out and I´m sure Keith will correct me if I´m wrong:

First cylinder numbering, they are numbered in sequence of crankshaft rotation. This means that the rear row will have all odd numbers and the front row all even numbers.
The firing order would be: 1, 10, 5, 14, 9, 4, 13, 8, 3, 12, 7, 2, 11, 6.
The camlobes rotate at 1/8 of engine speed in the same direction as the crankshaft (approximate firures: 51.43º between cylinders * 2 = 102.86º – 1/8 * 102.86º = 90º)

Now it´s time for Keith and the corncob, don´t You think?

Christer

January 22, 2002 at 2:17 pm in reply to: Technical Teaser #2117466

Christer
Participant

RE: Technical Teaser

[updated:LAST EDITED ON 22-01-02 AT 02:45 PM (GMT)]Keith,
good books on narrow topics are hard to get in Sweden. If specialised book stores should get one or a few copies it´s likely that you miss them.
My reference work has been the internet. Several hours of browsing and mouse clicking ……
The greatest resource on detailed engine description I´ve found, so far, is on the Aircraft Engine Historical Society homepage:
http://www.enginehistory.org/
This site was launched quite recently and my hopes for an abundance of information are high.

A few questions about hydraulic lock:
How was this dealt with in service?
What were the odds for getting in trouble if you just fired up with no precaution taken?
Were the spark plugs pulled on the lower cylinders to drain the oil as a routine measure during pre flight inspection?

I read somewhere that pulling the propeller backwards wasn´t a good idea (with the spark plugs fitted) since the oil would be forced into the induction manifold, promptly returning when the engine was started. Pulling the engine forward wasn´t good either since the force you can apply is very high considering the leverage. It´s easy to bend a con rod that way but, pulling the engine with the starter, ignition off, would only shear off a pin in the gear train if there was hydraulic lock.
Anyhow, this couldn´t be an alternative for the Centaurus or Hercules with no valves in the cylinder heads?

Christer
(I´ll be back …)

(The forum engine seems to sort the replies randomly?, but after this comment I´m sure it will go where it belongs!)

January 22, 2002 at 10:53 am in reply to: Warning to All modifiers #2117502

Christer
Participant

RE: Warning to All modifiers

Dear Mr. Worsley,

since this is a thread of critisism I take the liberty to reply to Your 193’rd post since You joined this forum two weeks ago. 🙂
In two weeks there has been 193 sayings of the day and, if I haven´t successfully managed to avoid any of them, there has ever only been two different variants. 🙁
So, please-please, renew the saying of the DAY every DAY or liberate me from beeing brainwashed by not adding them anymore. 😉
As You can see from the number of smileys, I´m trying to say this in a friendly manner since the rest of the contents of Your postings has always been relevant to the discussions and made good points. 🙂

With my very best regards and respect,
🙂 Christer 🙂

January 20, 2002 at 9:58 pm in reply to: Technical Teaser #2117597

Christer
Participant

RE: Technical Teaser

Keith,
Your timing was perfect. Do You remember that we had a discussion a while back about the reliability of the Centaurus? I´ve done some home work since then and I´m still having it fresh in my memory. 🙂
There are a few questions though, that I`d like to ask someone so, let me know if You don´t mind!

Christer
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