isambardme
Western Thunderer
I don't think the gas supply can do anything for the speed, merely increase/decrease the rate at which steam is created. So it can reduce the propensity to stall through lack of steam if that's what you meant. I ended the session after 35 minutes, but I hadn't exhausted the gas. I shall time a full running session when I am more familiar with the locomotive.
Richard
On 16mm gas powered locos it is well known that you reduce the gas supply soon after starting, otherwise the excess gas can produce too much steam & the safety valves blow off, wasting power & reducing the running time, no matter how careful you try to be with the regulator. The 16mm locos use a 'poker' burner, however although the earlier Bowande Gauge 1 locos used a 'poker' design variant, that was soon replaced with a ceramic burner. Some of Bowande's A4's are known to have had issues with a lack of power hauling a rake of say 6 coaches. As the latest G1MRA magazine article shows, replacing the original ceramic burner with a new burner having substantially more holes has cured this. I had wondered before seeing the video how good the ceramic burners on the new Duchess would be. Clearly all is well. Phew! Meanwhile, well done for getting a 35 mins run with gas to spare . Further running in and operator familiarity should lead to even better runs for us to watch enviously while locked down!
Steve
I don't think the gas supply can do anything for the speed, merely increase/decrease the rate at which steam is created. So it can reduce the propensity to stall through lack of steam if that's what you meant. I ended the session after 35 minutes, but I hadn't exhausted the gas. I shall time a full running session when I am more familiar with the locomotive.
Richard