This is of course, Cedric Lynch's machine. It's been on the road, with one major rebuild due to an accident, since the early 1990s.
This is 'Lynch' as in the eponymous motor. The prototype motors were built in the garden shed belonging to Cedric's parents and initially, lacking access to 'magnetic steel' the laminations were made of metal recovered from tin cans. The design of the motor was simply based on the shapes that could be cut with simple hand tools. When I first met Cedric and encountered this machine, it was running a single 165Ah 12v semi deep-cycle battery. The controller was just a two step system with a starting resistor, with most of the speed control being done with a Derailleur type gearing system. Another clever Cedric design, this used two gear 'blocks', with the front one facing the opposite way to the rear. The chain was stepped across both blocks at the same time, keeping the chain run straight and at nearly the same tension. This allowed downshifting to achieve regen braking and in this form, Cedric had achieved a real world journey of around 120 miles, albeit at a low average speed of under 25mph. The information from the BVS at that time, was that electronic motor control had poor efficiency and that might have been true of the SCR controllers available used at the time (although you've always got to watch out for a system with apparently poor PEAK efficiency, actually having better AVERAGE efficiency under the operating conditions). I encouraged Cedric to go to a much higher voltage and to adopt a modern high frequency MOSFET controller. He did so, first I think going to 36 and the 48 Volt. I recall him using Optima Yellowtops and also Exide Orbitals, but changed to Thundersky Lithium cells when these became available. With a nominal 100Ah at 48 Volt, Cedric could now make the journey between the Lynch Motor Company premises in Honiton, Devon and his home in Potter's Bar, in Hertfordshire. That's a trip of around 150 miles and Cedric could average nearly 50mph. A 60 volt pack, made up from old cells that now have excessive internal resistance, is charged by a couple of PV panels on Cedric's shed roof and the vehicle charged from them by simply paralleling the two packs. As far as I know, there is no Balsa wood used in it's construction. It has a lightweight steel tube frame and uses a combination of light motorcycle and mountain bicycle components in the wheels. The front suspension is a variation of a virtual steering axis system, similar to that used on the OEC Duplex of the 1930's. There are quite a few pictures of this machine on http://bikeweb.com/image/tid/57 On Wed, 21 Aug 2019 at 00:46, brucedp5 via EV <[email protected]> wrote: > > > > https://metro.co.uk/2019/08/20/police-stop-homemade-car-made-balsa-wood-duct-tape-10599191/ > Police stop homemade car made out of balsa wood and duct tape > 20 Aug 2019 Basit Mahmood > > [images / Anglia Press Agency > https://i2.wp.com/metro.co.uk/wp-content/uploads/2019/08/PRI_808426911-e1566288148535.jpg > The three wheeler was made out of duct tape and balsa wood > > https://i1.wp.com/metro.co.uk/wp-content/uploads/2019/08/PRI_808426901.jpg > Bedfordshire Police say the vehicle didn’t cause an obstruction to other > road users > ] > > [image] The officer who pulled the strange vehicle over admitted he still > didn’t know what it was > > Traffic cops were left stunned after they had to pullover a vehicle that > resembled a small boat on Britain’s busiest motorway. > > Made out of balsa wood and duct tape, officers described the electric > vehicle as the most ‘unusual’ they’ve had to stop in 26 years. > > The three wheeler was spotted on the M25 in Bedfordshire on Sunday. > > The officer who pulled the vehicle over tweeted: ‘All checked and in order, > although still not convinced I know what it is.’ > > Social media users were quick to offer their own explanations about what > they thought the vehicle was, from a modified motorcycle to a German made > vehicle. > > Another added that it looked like a ‘Co-Op home shopping delivery vehicle’, > while others questioned how it could be considered safe. > > Bedfordshire police were able to confirm that the vehicle was approved and > registered by the DVLA, and is in fact a motorbike with a plastic shell > built around it. > > Sergeant Stephen Andrews, from the Bedfordshire, Cambridgeshire and > Hertfordshire Roads Policing Unit, told Metro.co.uk: ‘This is certainly not > a vehicle that is seen very often on our roads, but after road side > inspection we couldn’t find anything that would prevent the rider to > continue his journey. > > ‘The vehicle was keeping up with other traffic and didn’t cause any > obstruction to other road users. > > ‘The owner made sure that he fulfilled all the safety regulation as well as > keeping the insurance, MOT and tax in date.’ > [© metro.co.uk] > > > https://www.foxnews.com/auto/police-bizarre-electric-vehicle-duck-tape > Police pull over bizarre electric vehicle made from 'duck tape' > Police in southern England were baffled on Monday by the most bizarre > electric vehicle they’d ever seen. > > The tiny white two-wheeler looked like an airplane cockpit without wings or > a tail and had a body constructed from balsa wood and “duck tape.” But the > most surprising thing about it may have been that it was found to be > perfectly legal. > > An officer from the Beds, Cambs & Herts Roads Policing Unit tweeted photos > of the vehicle, which turned out to be a custom electric motorcycle that was > registered and insured. > > “The most unusual vehicle I’ve stopped on a motorway in 26 years. All > checked and in order, although I’m still not convinced I know what it is,” > another officer wrote. > > One commenter said she spotted it on the highway a couple of weeks prior and > posted a photo showing the driver in action. > > As if the car weren’t enough of a conversation starter on its own, some > commenters took issue with the officer describing the material used as “duck > tape,” which reignited a long-running debate over whether “duck” or “duct” > is the proper name. > [© foxnews.com] > > > > > For EVLN EV-newswire posts use: > http://evdl.org/archive/ > > > {brucedp.neocities.org} > > -- > Sent from: http://electric-vehicle-discussion-list.413529.n4.nabble.com/ > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) > -- Paul Compton www.morini-mania.co.uk www.paulcompton.co.uk (YouTube channel) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
