Here is a list of all the postings Martin Whybrow has made in our forums. Click on a thread name to jump to the thread.
|Thread: Clearview - take care|
A lot of antivirus packages work on signature for executable files; if they're not in the database, or the signature doesn't match, the program is treated as malevolent and the AV deletes files; I have a recurring issue with one bit of software that my AV keeps deleting, despite it being 100% safe!
The issue with Kaspersky AV is that it's Russian and the US government has apparently detected that as well as sending suspicious files back home for analysis, it may also be detecting keywords in files and sending those home too (it's been suggested that words and phrases such as top secret or classified might trigger this behaviour).
|Thread: Changing connectors on my Lipo batteries|
I consider the XTs to be one of the best battery connectors for the purpose and certainly don't consider them unsafe.
|Thread: Ebay sellers...|
Possibly the most honest thing I've seen in a listing: "I don't know what I'm talking about with it"
|Thread: rchobby-avenues.co.uk - London based|
If you Google their registered address, you may think twice about buying from them
|Thread: Mystery Glider help!!!|
Send me a message with your email address and I'll send it to you.
The wings look very much like the Greensleve wings; the Greensleeve has a conventional (low horizontal stabiliser) tailplane; the wingspan is 2m and is electric powered with a motor in the nose. The wings are 2 pieces, joined with a steel bar; the wings mount via 2 dowels at the front and 2 M6 nylon bolts at the rear.
The Cortina has the same fuselage, but has an all moving T tail, 3 part wings with no aeilerons and a span of 2.2m.
I have both plus two more unidentified models with the same fuselage! I also have the instructions for the Greensleve.
Edited By Martin Whybrow on 25/10/2017 21:01:21
|Thread: Plod Vs Drone|
Glad that Essex police know the law, their neighbouring force, to the north and west, doesn't appear to have a clue from my experience with them.
|Thread: Fire Extinguisher Disposal|
Pete, do you mean BCF or powder? BCF is a halon, so disposal is very different.
The powder is relatively harmless as it's either ammonium phosphate, which is a fertiliser, or potassium or sodium bicarbonate. If it's the type with a gauge, it's a stored pressure extinguisher so needs to be fired to make it safe; if there's no gauge, it will be a cartridge type which can be opened easily (the head assembly screws off), these usually have a wider neck and will have no sign of a gas fill valve. With the cartridge type, you could tip out the powder into the bin, reassemble the extinguisher and fire it in safety.
Halon is a very tricky substance to deal with owing to ozone depleting chemical regulations.
Alternatively, let the local fire brigade set it off for you!
|Thread: Air France A-380|
QF32 suffered a turbine disc failure on the Trent 900, this was a fan / shaft failure; agree that both were uncontained failures though.
|Thread: Sad day for Bishop Aviations Red Arrows.|
The engine sounded very much like it lost one cylinder, was the object that came flying out a spark plug?
|Thread: Caption competition!|
You're right, that boot IS much bigger than it looks from the outside!
|Thread: What's flying over your house|
Not so much from my house, although it would have been very close, but was out gliding today from Cambridge Gliding Club (1st time I've tried gliding), I spotted a fighter aircraft ahead which then turned and passed directly over us a few hundred feet above us, we got a very close up view of a Sea Fury, fantastic!
|Thread: lengthening ESC wires to battery|
I'm going to be a real pedant here! Capacitors don't store energy, they store charge, Q is a measure of charge, not energy and it's measured in Coulombs.
I'm not sure where you go this information Denis, but it's far from correct.
The voltage rating of a cap is the maximum voltage it's guaranteed to withstand before the dielectric breaks down; when selecting a cap, choose one that exceeds the maximum working voltage, e.g. for a 3S pack, use a 16V or higher rated cap. You could use a 250V rated capacitor, it would work but it would be much larger than the 16V cap and would cost a lot more as well.
Tantalum caps are very unreliable and best avoided where possible as they have a tendency to go short circuit. Much better is to look at the ESR and select an electrolytic cap with a low ESR value.
|Thread: Had my first full size flying lesson!|
Had my first hands-on in a Cessna 182 about 25 years ago, then a Piper PA28 about 4 years ago; also had an hour in a 737-800 simulator a couple of years ago, a very worthwhile experience if you get the chance (if you're anywhere near Cambridge and fancy a try, I can put you in contact with the operator of the sim). On Monday, I have an entire day of glider training at Cambridge Gliding Centre, courtesy of my brother (my 50th birthday gift from him, he knows me well!)
|Thread: Multiple servo quick connector|
How about a D connector, they're pretty substantial but reasonably compact.
|Thread: TJD Models - a lacklustre performance|
Obviously those recommending Appliances Online haven't had to deal with them when trying to get something repaired!
|Thread: BBMF (at least) Merlin powered planes grounded|
A colleague who's in the know mentioned it was picked up during an examination of the magnetic plug in the oil system.
It's a shame thay didn't find it earlier, the Lanc was supposed to do a display at our loacl show at Little Gransden last Sunday!
|Thread: What's flying over your house|
Sally B was flying today (Sunday), she did her routine at Little Gransden show (Cambs)
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