Fascinating stuff, thanks Paul! Sent from my iPhone
> On 21 Aug 2019, at 10:15, Paul Compton via EV <[email protected]> wrote: > > 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) > _______________________________________________ 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)
