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</o:shapelayout></xml><![endif]--></head><body lang=EN-CA link=blue vlink=purple style='word-wrap: break-word;-webkit-nbsp-mode: space;-webkit-line-break: after-white-space'><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Dear Richard and Kevin and Robert<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>I found the description confusing. I also thought that he was describing a top lit updraft stove with some air provided from below. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>There is a company in Turkey called SILVER that makes TLUD stoves and has been doing so since 1958. I am in fact reprocessing a test done in December on one of them, not the smallest version. It peaks three times at 24 kW during the burn. It behaves badly and needs better secondary air which I found easy to add. They it was really good. I think they had never had a test done before, certainly not one with gases and PM. Lots of potential with small modifications.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>So TLUD is not all that new I guess. It keeps getting rediscovered because it is a good system at least for some applications. In UB not being able to refuel it until it is nearly out is a major <i>dis</i>advantage. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Richard re the crusher:<o:p></o:p></span></p><p class=MsoNormal>>…but why such an investment in thickness across the full diameter of the flywheel. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Cost, strength and no machining. It is CNC flame cut. The mounting flange and handle holes are drilled later but that’s all.<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>>Wouldnt it be far better to thin out the inside and fatten up the outside. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Then it would have to be cast. No way.<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>The MV squared rule has me thinking that you want the maximum percentage of available mass at the largest radius where it is moving the fastest...There is a far more elegant way to say that eh ? <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Elegance means efficacious simplicity, not necessarily least quantity of material.<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>>Did anyone think about making up a water tight ring chamber with lots of baffles for filling with water as the mass ? <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Yes. Too expensive and will definitely leak after it is dropped a few times. Unrepairable in the field.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal>>…easier on the hands when you hit really solid bits of rock concrete or steel rbar...etc. <o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The hands feel nothing. The 2 x 85 kg flywheels crush anything in their path. It will crush tombstone granite to 5mm chips. I have seen it crush road spalls with a Treton Impact value of 8 which is too hard for a commercial crushing operation. The rocks explode 3 metres into the air when they finally yield!<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>> Now don'tchya just love this kind of armchair defacto critique ?<o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>That is where many good ideas come from. Most fields of engineering (including stoves) are filled with ‘thou shalts’ and ‘shalt nots’. Many an off the wall comment inspires a new direction, unrestrained by the ‘obscuring dust of acquired knowledge’.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The machine was developed by Nigel and Yours Truly P-P in 1995 after two years of theoretical work and chasing up one failed avenue. The plan was to increase income and limit eye and hand injuries while still operating manually. There are a few hundred of them around.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Institutional stove projects (there is one coming up in Namibia) need aggregate for bases and slabs and this is one way to cut transport costs a lot. I like the fact the money goes to labour rather than imported equipment, maintenance and fuel.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Regards<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Crispin<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p></div></body></html>