Ruairidh and David,
I have the wrong lever on my Ulster operating its BLIC. Being a lazy person, I couldn't face wandering out to the garage to check which of the two levers it is so, as ever, I consulted the archive.
By looking at the 1923 (pre BLIC) parts list I see that the only arm illustrated is BF 15 which applies to the Scintilla. Later lists use the same illustration (which shows the shorter of the two arms) but label the drawing as both BF 15 and BF 29 - the BLIC arm. The BLIC arm is the longer.
This makes sense to me because the effect of the wrong arm on my car is to give a slightly reduced movement of the arm on the mag; the difference is small, perhaps 1/4" of linear movement at the magneto. I set the hand control to give full advance correctly and accept that I cannot quite achieve full retard. So now David knows which arm is which but Ruairidh will be sorry to learn that, despite what I am obliged to describe as my short arm deficiency, moving its control lever still has a noticeable effect on the engine's response. So being wrong armed is unlikely to be the reason for the lack of response he describes.
I hope I may have eliminated one possibility and am only sorry to have no suggestion for a cure. Over to the magneto specialists?
Regards,
Stuart
I have the wrong lever on my Ulster operating its BLIC. Being a lazy person, I couldn't face wandering out to the garage to check which of the two levers it is so, as ever, I consulted the archive.
By looking at the 1923 (pre BLIC) parts list I see that the only arm illustrated is BF 15 which applies to the Scintilla. Later lists use the same illustration (which shows the shorter of the two arms) but label the drawing as both BF 15 and BF 29 - the BLIC arm. The BLIC arm is the longer.
This makes sense to me because the effect of the wrong arm on my car is to give a slightly reduced movement of the arm on the mag; the difference is small, perhaps 1/4" of linear movement at the magneto. I set the hand control to give full advance correctly and accept that I cannot quite achieve full retard. So now David knows which arm is which but Ruairidh will be sorry to learn that, despite what I am obliged to describe as my short arm deficiency, moving its control lever still has a noticeable effect on the engine's response. So being wrong armed is unlikely to be the reason for the lack of response he describes.
I hope I may have eliminated one possibility and am only sorry to have no suggestion for a cure. Over to the magneto specialists?
Regards,
Stuart