#ygrps-yiv-1521675880 blockquote.ygrps-yiv-1521675880cite {margin-left:5px;margin-right:0px;padding-left:10px;padding-right:0px;border-left:1px solid #cccccc;} #ygrps-yiv-1521675880 blockquote.ygrps-yiv-1521675880cite2 {margin-left:5px;margin-right:0px;padding-left:10px;padding-right:0px;border-left:1px solid #cccccc;margin-top:3px;padding-top:0px;} #ygrps-yiv-1521675880 .ygrps-yiv-1521675880plain pre, #ygrps-yiv-1521675880 .ygrps-yiv-1521675880plain tt {font-family:monospace;font-size:100%;font-weight:normal;font-style:normal;} #ygrps-yiv-1521675880 a img {border:0px;}#ygrps-yiv-1521675880 {font-family:Tahoma;font-size:12pt;} #ygrps-yiv-1521675880 .ygrps-yiv-1521675880plain pre, #ygrps-yiv-1521675880 .ygrps-yiv-1521675880plain tt {font-family:Tahoma;font-size:12pt;} Just FWIW, there are maintenance issues affecting propane systems. Propane requires heat in order to vaporize which is provided by ambient air in small volume applications such as a BBQ or torch. An interesting experiment is to connect the BBQ to a small sized cylinder when ambient temperatures are lower, resulting sometimes in the cylinder becoming a ball of frost with the propane delivery stopping until the tank warms. In this case, the tank is the heat sink/heat source for the heat of vaporization. In the case of higher consumption devices such as engines, a vaporizer or liquid to liquid heat exchanger uses engine coolant in a chamber offering parallel snail shell passages or other arrangement to provide large contact surface. If the engine coolant is restricted or stopped, the vaporizer/evaporator will freeze up and delivery will cease. A blown head gasket, for example, will often make for some interesting diagnosis for those not familiar with propane fueled vehicles. Under cold operating conditions, it may not be practical to provide sufficient heat to the vaporizer which is why northern lease fleets would often pull their propane vehicles in the winter. Another aspect which may not be familiar is that of the ethyl mercaptan, which is combined with propane for its powerful stink, as a means of warning the presence of a leak. The mercaptan is in the form of an oil which usually builds up slowly in the system. Units which have been in long service and not had the system cleaned will often have a thick gooey, oil-almost-grease blocking up the vaporizer. This is a common problem with RV furnaces and the like. Another issue regarding propane use is that an engine can profit from more spark advance when using the higher octane propane. Propane is also of lower heat content than gasoline which results in lower power output when an engine is running on propane. Typically, a conversion will recalibrate the spark advance curve to profit from the higher propane viscosity, winning back some of the power difference. If an engine is dual fuel, that is one which is switched back and forth between gasoline and propane, the propane running will suffer from noticeably lower power. The better dual fuel conversions include an automatic remapping of the spark advance for each fuel. Some more recent applications use fuel injection to deliver the propane as a liquid rather than a propane carburetor which mixes vapor. Likely all this is way out of anyone's interest but something, regardless.
Mark Posted: I'm looming at buying a new Generator (RVing etc) That by a flip of a switch, you can go from Gasoline to Propane.
There are already many Trucks, tractors, High-Lo's etc. running on Propane or Natural gas.
Propane does NOT break down, as Gasoline, or CORN fuel does.
AND With a small attachment you can GRILL BURGERS. LOL (TRUELY possible. lol )
On Thursday, December 4, 2014 2:25 PM, "'Norm Keller' normkel32@... [DSN_KLR650]" DSN_KLR650@yahoogroups.com> wrote:
Posted by: "Norm Keller"