David Roberson <dlrober...@aol.com> wrote: A question that seems to need answering is: Why is the black electrical > tape wound around the manifold at the location where the thermocouple would > possibly hit if pushed downward by the insulation? Is there some purpose > for tape in this particular location?http://lenr.qumbu.com/lenr_spicepics > /111010_1C_crop.png > > It sure looks like an attempt to keep the TC from contacting the metal of > the manifold. >
Ah. You mean the purpose is to keep the TC in contact with the nut only, and not to conduct too much heat from the manifold. I expect you are right. Black electrical tape is pretty good thermal insulation. So is duct tape, which is similar. Generally speaking, a good electrical insulator is also good at thermal insulation. By the way, Heckert referred to "duct tape" yesterday. I think he referred to what Americans would call "adhesive tape" or "Scotch tape." Duct tape in the U.S. is heavy gray ultra sticky stuff: http://en.wikipedia.org/wiki/Duct_tape It is used for all-purpose everything repairs. It was used in Apollo 13 to avoid catastrophe and make an air filter. I have a 20-year-old car in Japan which is held together with the stuff. - Jed
