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I trained in the RAF as an instrument fitter. Part of our final training was to assist the engine fitters with doing engine starts on a Vulcan Bomber. The Vulcan had two ways of starting its engines, one used an external power generator, the other used its own internal batteries to start one...

For info my Volvo has a 12 Volt 900ah battery - it needs a Volvo to drag it around!

My Raleigh "Palm Beach" '57 still has the original chain and Sturmey Archer 3 Speed Hub. Since there is very little slack in the chain it has never de-railed. The advert at the time for this bike showed it being ridden down a "Jacobs Ladder" of stairs - thus promoting the springiness of the...

I live in a culdesac that has a street name, and house numbers, but all 24 houses have the same post code. However, the house numbers are sequential not alternate - 1,2 3 down the road, not 1,3 5, 7 down one side and evens down the other side. We live at number 8, between 7 and 9. Our house...

Sample calculation for battery cost per mile: Assume 33 volt 10AH battery Assume perfect performance from the battery for 1 hour, i.e it provides 10 amps with no loss. So... 33 volts x 10 amps x 1 hour = 330 watt hours 1 unit of electricity is 1000 watt hours So electricity required to...

My wife's wheelchair clip on power unit made by ROMA uses a 12v 20ah SLA battery which sits just over the motor unit, that is a deep discharge item. When it was new I tested it with a 50 watt bulb which drew 4 amps and it ran for more than 4 hours before the wheelchair controller started to...

Used to be the same for 2CV drivers, but now with the modern car design the individuality is gone, and so have the friendly waves.

50+ Years ago when i was a "Biker" (1946 BSA 125cc Bantam) I was given the chance to ride a friends Ariel Arrow (250cc 2 cylinder 2 stroke). I gave the kick start a gentle prod and it started. Pulled in the clutch, engaged first gear, revved up a little (thank goodness) and let the clutch out...

In the 1970's I was an Engineer on the RAF's Jaguar Conversion Unit at RAF Lossiemouth on the Moray Coast in Scotland. There was an airspeed record set just post WWII by a Typhoon (propellor driven - not the new jet one) for the time travelled from overhead Aberdeen airport to overhead...

Its a "square Law" i.e if you have a twice as strong headwind than usual, then the resistance is 4 times what it would have been before. If 3 times higher than usual, then it will be 9 times higher than before - it follows from the formula for "drag coefficient" - 1/2 drag coefficent x area x...

And one of the replies taught me about CTRL+ and CTRL- which I never knew about before!

I had a colleague who used a really rusty ladies bike and tatty wicker basket to go to the local, unmanned, railway station as part of his daily commute to the MOD in London. He would park the bike and secure it to the fence with a Kryptonite lock. One day he came home to find the bike still...

In Biggleswade there is an entry into a one way system which is a lights controlled crossroads at which you can only turn left, NO straight on, NO right turn. I was at this junction in a bright red Almera with a bike to my left. As the lights changed I waited for the bike to move off before...

If you leave the rubber feet off then you can leave a trail of sparks as you lean the bike over going round corners, looks really spectacular at night!

If you use "Liverpool" as the basis for a password, then replace letters by numbers, including Roman numerals you can get things Like "L153rpool" "Liverp0ol" "Liverp0050" and many more such combinations etc

Chris, I use a self contained alarm padlock on my wife's wheelchair if we have to leave it anywhere, no need for an external power supply or to to secure it to anything but the wheelchair, however it gives a 110db scream if it is moved, and the internal batteries can be replaced if needed. Got...

And balloon tyres for bouyancy...

Hi John, Live at Biggleswade, the track around Willen Lake is ideal for me to push my wife's TGA asssisted wheelchair since it is very level and well surfaced - the parking is OK too. Not sure on the second picture, but guessing on the second half of willen lake on the other side of the...

Nice view of Willen Lake at MK

You may wish to consider mobility scooters the company Quingo is located in Luton, and were very helpful in providing a home visit whilst we were looking into various types of wheel chair for my wife. They did not get a sale becuase she did not want a machine in which she had to apply steerage...