Mamod Brunel Modifications
Posted: Tue Aug 04, 2020 8:24 pm
Finally coaxed my Mamod Brunel around the line a few times today with thanks to advice from Chris Cairns.
- Plastic gas pipe replaced with copper.
- Leaky gas jet attended to.
- Boiler raised to allow more air to burner (temporarily with some BA spanners wedged in until I turn up a set of spacers) - prior to this the flame was pulsating between burning under the boiler and shooting out of the chimney, which was pretty cool!
- Burner adjusted as far back on slot as possible to centre on boiler - could do with going back further, I'll need to extend the slot or drill another hole for this and shorten the gas feed pipe.
The thing is still short of breath, the boiler not being able to keep up with the steam used. I wonder what other modifications people have made to their Brunel to improve performance. Chris has already suggested Mike Wakefield's lubricator mod so that is on the list to do.
I'm not expecting miracles, but I'd like to atleast get it to run continuously around my relatively level indoor line!
The slightly scary burner - all this would do was flashback until I sealed the leaking jet.
Improved somewhat, I believe I've got the gas set too high.
- Plastic gas pipe replaced with copper.
- Leaky gas jet attended to.
- Boiler raised to allow more air to burner (temporarily with some BA spanners wedged in until I turn up a set of spacers) - prior to this the flame was pulsating between burning under the boiler and shooting out of the chimney, which was pretty cool!
- Burner adjusted as far back on slot as possible to centre on boiler - could do with going back further, I'll need to extend the slot or drill another hole for this and shorten the gas feed pipe.
The thing is still short of breath, the boiler not being able to keep up with the steam used. I wonder what other modifications people have made to their Brunel to improve performance. Chris has already suggested Mike Wakefield's lubricator mod so that is on the list to do.
I'm not expecting miracles, but I'd like to atleast get it to run continuously around my relatively level indoor line!
The slightly scary burner - all this would do was flashback until I sealed the leaking jet.
Improved somewhat, I believe I've got the gas set too high.