Recent content by Orraman

Were these not used in France during and just after WWII when there were no tyres for civilian use? Dave

RoadieRodger, "where they are based or a contact name" This any help? Dave Cycle Show 2012 - Young electric bicycle brand from London set to move everybody with two new models

I have both 3 and 7 speed Panasonic bikes, subjectively the climbing capability are comparable but the three speed seems slightly slower in top, 26 against 28 inch wheels. From the mechanical view the 3 speed is totally adequate, first for hills and second for mild inclines. This does mean...

Perhaps? 4 mph = 4 * 5280 fpm /60 /60 = 5.8666 fps horizontal 1 in 5 = 5.8666 / 5 = 1.17333 fps vertical 115 kg = 253 lbs * 1.17333 = 296.85-ft.lbs/sec conversion foot-pound per second to watt (ft-lb/sec to w): w = 1.35581794833 × 296.85-ft.lbs/sec ~ 403 W Dave foot-pound...

I use the car battery to charge batteries for toy aeroplanes and to ensure that the car would start I bought a "Surestart" similar to this years ago and it has proved very reliable. Cuts off at 11.2v and reconnects at 12v. £12 including postage. More advanced programmable versions are...

Might help? Dave electricbikemag.co.uk::Review: Raleigh Velo-Cité Xbar (early 2012)

15 children killed by cycle helmets. A doctor in Sweden lamented, with regard to strangulations in that country and its child helmet law, "We know we have killed, but we can't show we have saved anyone". [Web link] Child deaths due to cycle helmets

Dr Ian Walker conducted a series of scientific tests covering driver-bicyclist interactions. One of his findings was: [ I found there were 23% more vehicles coming within 1m of the bicycle when a helmet was being worn. I think this is perhaps the clearest way to illustrate the effect of...

The motor/gearbox looks very like the EMD invalid carriage and golf trolley items. The one in the link looks to have a hollow shaft as used on a golf trolley I have that might be relatively easy to adapt with a new shaft and bushing in the forks. An ' R ' pin might provide drive and the...

Perhaps an electrically powered Flettner rotor might help? Dave

Posted 19 Sept 2011

Is this the same game? The contestant points to one door of three. The host opens a different door which he knows to be empty and asks if the contestant would like to change. The Magical Maze by Ian Stewart says change, referencing a 100,000 run of a computer simulation and invites the...

A brushed motor can be switched on and off to allow a measure of control of speed and power. One model of the TGA Electrobike had a trigger switch on the handlebar as did the Zeta but the results on the Zeta might not be felt. Electric winches of 1.1 Kilowatt are used to launch F3B model...

Kitchenman, Late Again but I writ it, I'll post it. It would appear from your photos and the link below that your light has a halogen main bulb and an LED stand light. If this is so you could spin the wheel briskly and see if the stand light comes on when the wheel stops, this indicating...

In wartime Glasgow my grandfather had a coal carting business. The reins of the second horse would be thrown over the tailgate of the first cart with me as an 8 year old sitting inactive in the driving position. After the load on 'my cart' was tipped I would be handed the reins and told "Do...