If the smaller nozzle means reduced air setting the pressure drop through the diffuser might not be high enough to get good mixing so it could soot a bit. Depends also on whether or not there is an adjustment for head setting on the burner. Trouble is no one uses a smoke pump anymore. It’s...
I’m an ex boiler engineer. My grant oil boiler is not set up exactly to spec. It has a smaller nozzle running at a higher pressure to give the correct flow rate and heat input. Sometimes it’s necessary to do the opposite. Oil pressure affects flow rate so if you change the oil pressure the air...
Best not to adjust anything unless you have the means to test it properly i.e. flue gas analyser and smoke pump. Good point about the flue recirculating.
It’s probably one of three things -
Solenoid
Photocell
Control box
Needs a pressure gauge fitting to it to see if the oil pressure is dropping off. Alternatively look through the end of the burner and see what the cycle is.
Nice! Pot burners are quite sensitive to flue draught. If you’ve got the spec for it I’ve a gauge you can borrow if you want. You adjust it using the counterweight in the stabiliser.
Anyone got one of these - https://merchandising.demon-tweeks.com/images/tr:h-560,w-560,q-80,c-at_max/media/catalog/product/5/9/5920020.jpg
I could make up some adaptor rails to fit the bikes. It would store easily. Would be less stable than the sky lift but cheaper and smaller.
Thinking about it if you bend the float arm down you’d need to adjust the spring to raise the level which would increase the force on the valve - if I’m understanding this correctly. I’ve a lot of experience with BM, CI and Toby DVR valves but not this type.
Have you tried replacing the seal between the needle valve and the valve body/casting? You could try with PTFE tape if not . Otherwise if it was me I’d try grinding the needle in with a bit of fine grinding paste or polish etc.
I’m thinking this version of the Abba sky lift could be the one -
https://abbastands.co.uk/product-detail.asp?item=cruiser-sky-lift&pid=75
With the additional rails and brackets it should hold onto both bikes nicely but I’ll need to check the dims. Frames on the two bikes are very different...
That happens to Riello pumps when they run dry (even intermittently) as they get a partial seizure and overload the drive components. That’s a big clue right there :thumbup:
1953 plunger. Never had a long stroke single before. Or a plunger frame with sprung seat. It’s great fun on the back roads round here. Combination of magic carpet ride and space hopper. Permanent grin!