Here is a list of all the postings BackinBlack has made in our forums. Click on a thread name to jump to the thread.
|Thread: Variable resistors|
Reliable low voltage DC, high current switches are almost as rare as the potentiometers.
I would ask how often do you need to adjust the current?
Chris' suggestion looks worth a try and would work with a 1 or 2s Lipo, 6 or 12V lead acid gel battery as well. There are quite a few others in the links below Chris' suggestion in that large River place.
But, as peter suggests the NiMh solution is the simplest and based on my use of NiMh glow sticks is as simple and reliable as it gets.
Edited By BackinBlack on 18/04/2019 12:04:35
Forget variable resistors, unless you can find a 1 ohm 10 watt wirewound, a rare and expensive item. The paralleled resistor idea will not really work with the value of variable resistor you have.
You need fractional ohm resistors. For instance if your Cyclon is fully charged at 2.2V and the plug is rated at 1.5 volts 2 amps the resistance needed is (using V=IR, R=V/I) .7V/2 = 0.35ohms at 3 amps it would be .7/3 = 0.23 ohms. As the cyclon discharges at 1.9 volts, say 0.4/2 = 0.2 ohms.
Best answer is is to get four 0.1 ohm 2 or 3 Watt resistors, five banana plug sockets and wire the resistors from one socket to the next with supply from the cyclon at one end, you then have 0, 0.1, 0.2, 0.3 and 0.4 ohms available depending on which socket you use. No switches, just simple and reliable.
|Thread: Prostate Cancer|
Sorry to hear that. The positive thing is that you have been diagnosed.
I can only repeat the information given to me and can offer no advice except for people to get checked out at the first signs of anything untoward.
The Oncologist I saw explained that in my case the hormone treatment would have been carried out first for a period of 4-6 months, then radiation treatment every day for 4-6 weeks, then further hormone therapy for up to 9 months.
I felt that for me surgery was less disruptive.
It is well worth looking through the MacMillan Leaflets explaining the surgery and radiation procedures and their respective benefits and downsides.
Just a year since I was diagnosed with stage 2/3 Prostate Cancer. I had had regular "finger" examinations, up to about 3 years ago as I had for some time had a need to get up during the night for a pee. Findings were only of a slightly enlarged Prostate, no need to worry. Need to get up during the night increased to 2 sometimes 3 times, mentioned this to doctor, PSA test followed immediately which showed significantly raised PSA levels. Immediate referral to Urology department at Churchill Hospital Oxford. MRI and Multipoint biopsy followed quickly, then offered either surgery or radiotherapy plus hormone treatment. I chose surgery, 4.5 hour keyhole surgery, home next day a few weeks recuperation and almost back to normal. 8 Weeks from referral to Surgery, can't praise the Churchill team enough, they were brilliant.
A year on and all is clear.
If you're over 50 PSA tests are available on demand, so if in doubt get tested, it's only a simple blood test and might avoid the consequences of Prostate Cancer.
|Thread: DX9 problems|
UK service agent is Al's Hobbies. Helpful people. Als Hobbies
Edited By BackinBlack on 27/02/2019 19:53:02
|Thread: Programming AR636A|
Hi Mike, I think you may have to persevere with registering the receiver. I have several AR636 Rxs and had to download a new sprmx file for each one as the files appear to be locked to one serial number.
|Thread: Chisel Headed Scalples|
|Thread: World Models Pilatus Porter P6|
I gave up on cheap clamps, as you have found they fly apart. I now use those from Wilkinson hardware stores, they come in 3 sizes and work well.
Old fashioned "Bulldog" and spring type paper clips are also very useful, almost too many sizes to choose from.
Edited By BackinBlack on 21/01/2019 18:33:03
I can only think that the differentiation between private and account customers is only to identify a bona fide sender.
Not the first time I've seen LiPoly batteries incorrectly described.
Whether it's a deliberate act to circumvent the postal regulations I cannot comment, however under Parcelforce and Royal Mail Ts & Cs the carriage of any new Lithium batteries not connected or part of an electronic device is not allowed
Extract from Ts & Cs on Parcelforce website on what may be sent:
I use a method that was described in an early 80s issue of Radio Modeller which has proven to make strong and reliable laminated sections ever since.
The joint surfaces of the parts to be laminated are brushed with a thin coat 70/30 PVA/water mix and allowed to dry thoroughly. When dry bring the parts together in their final position and apply a domestic iron preheated to "cotton heat" for a minute or so. As the PVA is heat sensitive it will form an excellent bond and the iron being flat will hold the lamination flat.
I have some models that have used this laminating method for fuselage formers that date from the 80s which are still structurally sound. I have even used this method with thin ply sheet place of fibreglass bandages for wing joining, far neater and stronger.
|Thread: Aeroloop model retriever|
why not just use a carbon fibre fishing pole with a cord loop attached to the end, probably cheaper.
Edited By BackinBlack on 05/01/2019 18:10:22
|Thread: New Tv. It's Good But...........|
4G interference is becoming a more common problem on SD channels.
There are solutions, see here:
|Thread: BMFA mag's going a bit over the top?|
Well said, I wholeheartedly agree. Praise where praise is due
I see that the magazine is already available online, but not the December issue yet. It's under the BMFA tab as BMFA News Magazine.
|Thread: Home Insurance|
Damn, I stand corrected. I should have known to thoroughly read ALL the document.
I wonder how other model engineers, say those who build steam locos, do for insurance?
Perhaps it could be an add-on to the BMFA or LMA Insurances?
I suppose that from an Insurance Assessors pint of view establishing the cause of loss or damage would be a consideration, fire or theft should be straightforward, but accidental damage might prove contentious.
Haven't yet tested it, fingers crossed I don't have to.
As we all know, Insurance covers everything - until you make a claim.
My current policy with Direct Line doesn't appear to exclude model aircraft, extract from Policy:
Your personal possessions are covered for
✔ Accidental loss and damage
We will pay for accidental loss of or damage to:
• your personal possessions
• any other items listed on your schedule under ‘Personal possessions’ while they are within the British Isles. This includes cover for:
• possessions stolen from your unattended vehicle, but only if the vehicle is locked and your possessions are hidden from view in a closed glove compartment or locked boot.
• loss or damage to bicycle tyres and accessories, but only if the bicycle is lost or damaged at the same time.
• the theft of an unattended bicycle, but only if it is in a locked building or secured with a bike lock to an immovable object.
Your personal possessions aren’t covered for
✘ We don’t pay for loss of or damage to:
• business equipment
• watercraft propelled by hand (such as a surfboard or rowing boat)
• sports equipment while it is in use
• camping equipment while it is set up or in use
• items taken by Customs or other officials • any bicycle while it is being used for organised racing, pace-making or trials
• Money. You may have cover under Section 3B Money.
✘ We also don’t pay for loss or damage:
• for theft involving deception
• by any paying guest or tenant
• covered under Section 2A.
Best to check directly with them.
|Thread: Ebay sellers...|
It doesn't claim to be a Spektrum receiver and doesn't have the logo. So is it a fake?
I shan't be finding out, wouldn't trust such an eBay offering.
|Thread: BT internet email|
Unless things have changed in the recent months you can retain your email address when you change ISP. I have both btinternet.com and sky.com email addresses from earlier accounts which are still active although it is some years since I left BT and Sky.
As many know switching providers is really quite easy, difficult thing is choosing who to go to.
MoneySavingExpert and Which both have good guides to switching and services.
I now use NowTV as my Fibre Broadband and phone provider on a rolling monthly contract, good value and good service.
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