Opps - identifying a 1160 or 1185?

[BVH]

I've had an 1160 in my M*gC for a while and just received a loaner 1185. I set them close together and now am not sure if I may have mixed them up. I don't see any ID marks on either bulb. They look the same physical size and the filaments look pretty close. Is there a way to tell them apart besides flashing the 1160 by mistake?

 

[Hookd_On_Photons]

I'd try running them both a 6V power source (presumably the one you were using for the Mag60).

The dimmer one on 6V is the WA01185.

 

[BVH]

Thanks H-o-p. Simple but effective! It was immediately obvious that I had not mixed them up. the 1185 was very dim with the stock MC batt stick.

 

[Ginseng]

Oh my,

I do not recommend running the WA01185 on a 6V source. If you had it on for more than a few seconds, you run the risk of damage from underdrive. At that voltage, the capsule cannot reach minimum operating temperature for the tungsten redeposition cycle to become active. The bulb capsule will rapidly become opaque black from the tungsten that cannot redeposit on the filament. Ask me how I know. I put a WA01185 into a MC with a 5-cell pack and it was dim then got dimmer and dimmer. As I watched, the capsule became black and the bulb was irreversibly destroyed.

The filament of the WA01185 is visibly longer than that in the WA1160 and this is your best route to discerning which is which.

Wilkey

 

[StEaLtH_]

Here's a picture of a 01160 on the left, and the 01185 on the right.

Hope it's clear enough.

 

[BVH]

Thanks, Stealth for the pics. Its a very clear difference between the two. Thanks Wilkey for the info. Now that you said it, I seem to remember reading about that somewhere in the forum before. I had it on for no longer than it takes to push the button down, release and push it off because the dimness was obvious. I thought I saw some darkness in the glass but brushed it off. I've now run it for about 2 minutes over 3 starts and it appears as though the darkness is completely gone. Glad I have 15 more coming! I guess one has to go through a little trial and error for himself/herself to learn despite all the fantastic knowledge on this forum. I hope to keep it to a minimum!

 

[Icebreak]

Nice pic, StEaLtH_ .

 

[KevinL]

Stealth, beautiful pics.

I've always meant to ask, what is that spring in the base of the bulb? Backup filament? /ubbthreads/images/graemlins/grin.gif

 

[StEaLtH_]

Thanks for the compliments guys /ubbthreads/images/graemlins/smile.gif
Kevin, I believe thats the 'tip' that normally is on the top of bulbs, where the tube (?) blew the gas in it.. something like that /ubbthreads/images/graemlins/grin.gif

Oh you meant the spring, sorry misread /ubbthreads/images/graemlins/smile.gif
Maybe to keep the 'tip' in the center.

 

[Ginseng]

The coil at the tail provides a channel for them to fill it with the gas mixture. Stealth is correct. Most bulbs have the pigtail at the top and are called "top filled" while WA and Carley bulbs are called "bottom filled." I prefer the "bottom filled" bulbs because their front radiated light is free of artifacts related to the pigtail. I believe this is why some SF LAs are frosted at the pigtail.

Wilkey

 

[SJACKAL]

The coiled filament wide at the top are different lenghts, WA1185 are wider. This is how I tell my 1185s apart from 1274s.