Joined: Jan 2021 Posts: 162 Threads: 71
Reputation:
0
Location: California USA
Car type: 1929 austin 7 chummy AD
I was reading in the owners manual that the dash switch panel of my 29' chummy had a red glass that had a light. so I looked and found that it was burned out. so I looked on eBay and found one with the same numbers in the U.K and bought it. I put the new one in and it worked but the same day I ran the gas out of the carb and the light/switch was left on and it burned out again. luckily I bought two. my question is should I put the new one in and just not forget to put the switch off? any suggestions?
Joined: Aug 2017 Posts: 620 Threads: 7
Reputation:
7
Location: queensland
yes
very illuminating, a message has to be longer than 3 letters
Joined: May 2018 Posts: 2,954 Threads: 558
Reputation:
20
Location: Peak District, Derbyshire
Car type: 1929 Chummy, 1930 Chummy, 1930 Ulster Replica, 1934 Ruby
It might be worth trying a 12-volt bulb to see what happens?
Joined: Aug 2017 Posts: 620 Threads: 7
Reputation:
7
Location: queensland
the problem appears to be he's leaving the ignition on, if the 12 volt bulb refuses to blow he'll end up with a flat battery.
Joined: Jan 2021 Posts: 162 Threads: 71
Reputation:
0
Location: California USA
Car type: 1929 austin 7 chummy AD
Do you have any suggestions for a 12v light bulb. I might see the 12v bulb if it didn't die as soon as the 6v
Joined: Aug 2017 Posts: 254 Threads: 3
Reputation:
6
Location: Shropshire, UK
09-10-2021, 07:58 PM
(This post was last modified: 09-10-2021, 08:15 PM by Ian McGowan.)
The correct bulb for the Ignition Warning Light on a 1929 chummy (which is that which you keep blowing) was 8 to 9 volts.
(I am quoting from the Austin Handbook 619d page 21 - correct for the 1929 coil ignition car) Substituting a 12v 0.3A bulb will cause no damage but may be a little too dim to grab your attention; turning the ignition off when the engine isn't running is an essential practice - as with modern cars.
Later cars had the bulb holder which incorporated a series resistance and the correct bulb was a 2.5 volt.
Presumably because the 9v bulbs are difficult to source these days, Austin Seven Spares supply a 6v bulb as a substitute. I am fortunate in that in a different life I had access yo 9v bulbs and acquired a few for my stock. NO I will not part with any of them!!
Joined: Jan 2021 Posts: 162 Threads: 71
Reputation:
0
Location: California USA
Car type: 1929 austin 7 chummy AD
the only reason i forget to turn off the ignition is i run the gas out of the carb and let the car sit when parked. if i dont run it out then i turn it off right away before i get out of the car.
