Here is a list of all the postings Tim Kearsley has made in our forums. Click on a thread name to jump to the thread.
|Thread: Glitches and crashes|
The model that went in today had an electronic switch, so no moving parts (I don't trust mechanical switches). I used a separate Rx NimH pack in this model which I had charged the night before. I too have used Spektrum for at least 10 years, with no issues. It's the loss of two models with unexplained glitches which has made me doubt the Tx. It could of course be nothing to do with the Tx, but how can you tell?
Guys, I'm looking for your expert opinions!
Today, my beloved Great Planes SR22 met its maker. It was flying beautifully and had been for a few minutes, when it inexplicably dived to the ground. I didn't react quickly enough to kill the throttle so it went in under power and is, well, written off.
Last week I had another model, a Durafly Excalibur, intermittently rolling suddenly to the left. That too suffered some damage, as I was unable to land it cleanly.
In both cases, there was no clear reason for what happened. In the Excalibur I had used a Lemon Rx, in the SR22, a Spektrum AR8000. The Tx is a DX8 G2.
In both cases the models had range-checked OK and were not flying at great distance. I also always make a basic check of control surfaces after every session and had found no issues with either model.
I have reached the point where I daren't fly another model in case the Tx has some intermittent problem What do you think?
What's the procedure now for Spekky repairs - return to HH in Germany?
Any thoughts gratefully received!
|Thread: Does your club prohibit the use of after-market receivers?|
Sounds a bit Draconian to me. I use Spektrum brand but I also use Lemon receivers and I've never experienced a problem.
What prompted the ban at your club Tony? Was it a specific incident that had safety issues?
|Thread: Koado anyone?|
I recently bought a glider at our club's annual auction. It's a 2.3 metre span model, with GRP fuselage and foam core wings. The only thing I know about it is that it was made by Koado and decals suggest it was called "Funtime".
I've not been able to find anything online about the model, or indeed about Koado, other than they were a Czech company I think.
Anyone heard of the model or Koado, and know anything about it or them?
|Thread: YAD (Yet Another Drone) and its idiot|
Couldn't agree more!
|Thread: Field mower question|
Sorry, I didn't make it clear in the initial post - I am a committee member, since the AGM in December 2017. We have indeed considered repair options on the current mower and none really makes economic sense. The purpose of the question on this forum was to see what other clubs are doing and gain opinions on the relative merits of cylinder versus rotary, height of cut, owning a mower versus using a contractor etc. Your responses have been most useful, thank you.
Thank you very much for all the replies chaps - it's much appreciated. To answer some of the questions, our field is average I would say. The strip is protected from the grazing animals (cattle or sheep) by an electric fence and has been regularly mowed of course and rolled a couple of times a year. We suffer, as most do, from rabbit activity and our members fly everything from trainers to jets.
The two points of dispute within our committee are the length of grass we need to maintain and whether a cylinder or rotary mower would do the job.
We'll get there, I'm sure!
Our club mower has seen better days and it seems now is the time to think about replacing it. There is some disagreement among the members of our committee about what to get. I'm therefore just looking for some opinions from fellow enthusiasts:
What type of mower so you use, i.e. cylinder or rotary, and what size?
How closely do you mow your strip? One of our committee reckons a quarter of an inch is necessary. Many of us think that's unrealistic and longer grass wouldn't do any harm?
What size of mower? Our current, aged mower has an 84-inch cut.
Any inputs would be most welcome. Committee disharmony is a real threat here!
|Thread: T-tail linkage question|
Yes Frank, a servo in the tail seems the best option. The main thing which concerns me is adding weight to the tail. It's an electric glider, which has a brushed 600 motor, which I will replace with a brushless, reducing the weight in the nose. I hate adding dead weight, but will likely have to, to achieve a workable CG. I can't find any details about the model online, so I guess it's a good few years old now.
A few days ago I bought a 2.3 metre span glider, at our annual club auction. The model appears to be from "Koado Model Sport", who, I believe, is/was a Czech manufacturer. The model is in generally good nick, but the person who assembled it made a complete bodge job on the T-tail elevator. The linkage consisted of a tube epoxied to the covering material of the elevator (!) and a cable links back to a servo at the front of the fuselage. The scope for backlash and problems in general is huge I would say. So I want to do something more sound. However, I'm stuck for a really good idea. Any thoughts anyone?
The fuselage is GRP and the fin, I presume is hollow, as it's all one moulding, in two halves.
I've attached a few pics.
|Thread: Dave Burton (BEB)|
I've only just seen this. I'm deeply shocked and saddened. Dave was a first-class contributor to the magazine and his loss will be sorely felt. Sincere condolences to his family.
|Thread: which is cheaper,IC or ELECTRIC?|
There must be an argument for the moderators closing a thread when it descends into such drivel and which has no relevance to the title.
|Thread: Detrum-IStone-A2 6 axis gyro.|
I think the term "6-axis" is rather misleading. As you rightly say Tim, there are only three axes. The term 6-axis generally refers to a device with gyros on all three axes plus accelerometers on the three axes - hence six sensors in total. It's just the terminology which is confusing!
It was actually me that wrote the article - the credit to Lee was a mistake!
In principle, the gyro doesn't care whether the power source is IC or electric - it's just controlling the ailerons, elevator and rudder. However, gyros can get upset by vibration, and an IC engine, by it's very reciprocating nature, is going to transmit more vibration to the airframe than an electric motor. That said, it may very well work perfectly well.
Hope that helps!
|Thread: Electric Cars.|
At last, someone with the guts to say it! Hear, hear.
|Thread: Can I have two Life batteries powering my Futaba receiver?|
I think it might be slightly better to run two batteries into two separate ports on the Rx, rather than into a "Y" lead and then into the Rx, as it gives some redundancy against the connection becoming faulty. It's all about trying to avoid single points of failure after all. I've run two LiFe batteries on a Hangar 9 Spitfire (the 30cc one) for a year or so with no issues at all. I don't use diodes at the moment, but I might change that, as, on reflection, it does offer some protection against a battery failing and pulling down the other one. But then every component you put in circuit is another point of failure. I also avoid switches for the same reason, simply plugging the Rx batteries into a short extension from the Rx. If I do use a switch I use an electronic one - I simply don't trust mechanical switches!
|Thread: "The Chase" quiz show|
He is indeed, and a very nice bloke too.
Thanks chaps, for the kind comments.
It was a bit strange watching it, as there were whole bits of it I'd not taken in on the day.
We didn't buy a campervan in the end, as we hired one first and found we weren't that keen! So the money helped me buy a new car!
Yes, sorry, forgot to add that it's ITV, 5 pm. I wasn't nervous at all to start with, but by the time the production assistants had finished with us I was a quivering wreck! Still, it was an interesting day. Bradley seemed quite interested in RC aircraft!
Just thought, if you're a regular viewer of The Chase, you'd like to know that tonight's episode (Monday, 3rd September) has a model aircraft enthusiast as a contestant - namely me! We filmed the show back in July last year. I won't spoil it by telling you if we win or not. I'll just say that it's a cracking episode.
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