Hi all, I've a Geniol 150 with a generator and a nozzle in M7x0.80. Which manufacturer used this pitch ? Currently, whether Petromax, Optimus, Hipolito or Geniol, all use M7x1.00 Where can i find a nozzle M7x0.80 ? Did a Radius 101 use this pitch ? Gilles
@Sellig33 Until the introduction of the Petromax Standard threads,Hipolito generell used nozzles with the pitch you described.
Just for info. It is quite possible that the very latest Optimus lamps used M7 x 1, but most of them used 7mm x 24 tpi Whitworth (the 100N used M7 x 0.75). A radius 101 used M7 x 0.75.
@Reinhard @Nils Stephenson Thanks for your replies. I'll try to check with Whitworth gauges, but the 0.80 fit perfectly.... I'll check my old Optimus, i've 2. Gilles
Solex carburettors also use M7 and M8 at 0.8mm 60-degree pitch for some of their jets/fittings. Anything is possible and if a manufacturer can use something oddball so only their parts fit perfectly, they will! Alec.
@Rangie Thanks Alec ! @Nils Stephenson I check my 3 Optimus ( 200P, 1200 & old 300 ) Indeed it is 24 tpi. I don't know why I focused on metric pitch. The fact that Optimus is in Europe, therefore metric system. But all this doesn't help my business.... Where can I find M 7 x 0.80 ? That is the question ! I'm going to try a Radius 101 nozzle, 0.75 for 0.80, hopefully it should do it.... Gilles
@Sellig33 The manufacturer of your Geniol was Hipolito . I would look for jet's from Hipolito,like the ones pictured.
Hi all, Quick technical question: can too large a gap between the nozzle and the J-tube create a flame that chars? Gilles
Within the limits on the lantern's construction, this won't be likely. It is more likely that more air would be introduced provided the fuel discharge is strong enough to create the air-draw from the surroundings at the J-tube inlet. On other occasions, the fuel-air mixture velocity might be less than ideal to carry-through to the burner outlet ports. This might cause a slightly weaker or shorter flame, which in turn might not heat up the entire mantle sufficiently. On other more extreme cases, it might even cause the flame to be so withdrawn into the burner that the mixture starts to burn within the J-tube.
