Can someone help me for a replacement jet for the 635. this one is way overfueled with just a few pumps. will an Optimus fit? which size? Thanks for any info. I
Hello @dwillie a 250CP jet for Optimus 200 or Petromax 821/827 will fit. Alternatively you can use a (old/worn) 150CP jet for Petromax and widen the orifice until the 250CP needle fits. BTW the Phoebus on the picture doesn't look as it would burn way too rich. BR, Martin
Thank you for the information. I am glad there are parts available. If I pressure the light anymore than this it flames around the mantle, and will turn black. the jet orifice looks messed with to me. I could be wrong. I gave it a double cup of preheat and burns the same.
@dwillie Hi, This gent, lovelantern2014, offers new jets for your lantern. These jets are brand spanking new and made on a CNC machine. They come out of Korea and I have several of his products and can state he does great work. Look him up on the bay of evil. I hope this information will help out. I am sending you the ebay link in your PT box. Cheers, Norman
Forgive my ignorance with this type of burner. this is quite different from what I am used to, but its fun to learn. My whole problem I had here earlier was the adjustment of the needle. when I turned it in till it just cleared the jet top, it lit nice and bright. It was apparently starving for fuel. Being a male of the species I guess I am bullheaded, and had to learn by example. Now it runs fine but has a horrible exhaust smell. My other loop vaporizers don't smell this bad. is there a screw that goes into this hole above the jet? could this cause the smell? thanks for sticking with me. Ideas are much appreciated.
Basically, yes. The screw is actually a flat paddle inside the mixing tube. The idea of it is that by altering the angle of the paddle anywhere between vertical and horizontal, the flow of the vapour / air mixture can be altered thus fine tuning the lamp and get the best burn. In practice it is very rarely, if ever, needed. The smell is no doubt caused by unburnt fuel vapour escaping from the hole. I don't know if the "paddle" is available separately but as they are so rarely used, I can't see the harm of silver soldering a plug in the hole. Once you've done that, make sure the inside of the tube is nice and smooth. Henry.
I would expect that to smell really bad and it wont help the burning mixture either. The venturi effect as the vapour stream passes will throw it out of kilter. I found the paddle to be really useless for anything and so I set mine end on for minimum effect. I think it might run even better if the shaft for it wasn't there. It is bright as I need so I will not change it but that open hole will be bad news in my limited experience.
If you can find a 25mm or longer brass machine screw that has the correct thread, it is very easy to file or machine it down to make a replacement paddle.
If a standard Petromax jet fits, it is quite possible that a Petromax paddle may also fit. In that case, metric, something like 4x.75 (guessing) I can measure one up tomorrow if no-one has the measurements to hand.
Thanks Phil. I had something in my box that threaded in, and cut off to plug. seems to be running clean now. thanks all. I greatly appreciate the time and knowledge.
From my experience with such similar paddles in the mixing tube, angle-adjustments usually only make some noticeable difference in the resulting brightness during initial light-ups. After sometime, when the lamp's burning steadily and sufficiently heated up, whatever adjustment on their angles would have very little or no effect.
Good result. No-one needs a stinker. My Coleman 226 is only good outside for that reason. A great pity since it is a cute little thing and perfect for indoors. Foreground of the picture left. It is a bad housemate.
