Recent content by doubletop

I have had a go at this as I was having trouble in getting an RCExcel type ignition to work and wondered how it did it. Especially how they worked out the advance (The problem turned out to be my engine and not the ignition.) I used a PIC microcontroller with a hall sensor to measure the rev...

I'm a year late but still sad to hear John has gone. I like to say that I did my model engineering apprenticeship under John's guidance. He encouraged all my early efforts, made suggestions, provided tips and a lot more. I wouldn't be doing the stuff I'm doing today if it wasn't for John. RIP Pete

It’s been a long time since I posted on this thread as I've moved to loco's that are coal fired However, I still get the occasional query and it seems that this thread has become bit of a reference so I'll post this here. I got my jets from a model engineering supplier but recently I've...

Rick I had a look at your video, Impressive and, as you say more than enough steam produced. I had come to the conclusion I was producing about 12000BTU's so it would seem we are both in the same ball park with our calculations. Regards Pete

My thread on my work on my Rob Roy burner https://www.homemodelenginemachinist.com/threads/ceramic-gas-burners-on-locos.10137/ Expert, I'm afraid not. Like you I employed an emprical approach and then realised there should be some engineering/science behind all this so went looking for...

Its been a while for me and had to re-research dead links but try these as a start http://www.joppaglass.com/burner/lowp_chrt.html http://www.joppaglass.com/burner/highp_chart.html Computational studies of fuel and air mixing characteristics of a low pressure domestic gas appliance -...

Have you thought about the RCEXL clones from Hobby King? https://hobbyking.com/en_us/replacement-complete-ignition-set-for-twin-cylinder-gas-engines-10mm-plug.html Only US$ 35 each. They have twin units for various plug types but changing the plug caps isn't hard Pete

John I had been wondering how you were doing and did one of my rare visits to HMEM and here you are back, and only days ago. Good to hear you are on the mend and thinking about getting back into your workshop. That should be good therapy for you. All the best Pete

I was around at Dave's today while he did some fabrication work for the club track. After the obligitary cup of tea (we're both Brits) he showed me the engine, with the carb we'd both purchased from Hobby King. The engine was cold, we'd been working together on the welding for 3 hours or so...

Nice one Dave. Nearly as good as seeing it in the flesh Pete

Nice one Dave!! Pete

Thank you Mario Pete

Tom Posted on the wrong thread??? Pete

Photos updated to fix the Photobucket fiasco Pete

PhotoBucket Fixed Pete