Why does DIR advocate the use of a delrin backup light with a thin copper strip to complete the circuit as opposed to a solid aluminum light in which the entire body completes the circuit? The aluminum light is simpler and more foolproof.
Backup lights material: Aluminum or Delrin ~ which is better and are both DIR?
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Hmmmm.
Who said that an aluminum light wasn't DIR? And are you actually interested in DIR or are your recent posts trying to cause some sort of stir?
Who said that an aluminum light wasn't DIR? And are you actually interested in DIR or are your recent posts trying to cause some sort of stir?
You're assuming that aluminum backup lights are not DIR. Personally I've never seen anyone say this, and I've seen DIR divers wearing them, so..........Dearman:
jonnythan:
Hmmm.....
I'm interested in why DIR doesn't recommend what seems to be a simpler, more foolproof design. They seem to think about these things. I'm also interested in
opinions about the validity of my initial assumptions about two different light designs.
As for other posts, they were not in the DIR forum and I don't see how trying to find the owner of a lost light is "trying to cause some sort of stir." The, admitedly, slightly provocative title was to meant to "stir" interest in the two questions mentioned above.
You never answered the initial question.
Who said an aluminum backup wasn't DIR?
Who said an aluminum backup wasn't DIR?
detroit diver
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Both of my backups are Al. I've never seen an indication that AL is not acceptable. The only requirements are type of battery, and type of bulb (and attachment considerations), AFAIK.
I can't really help you there. They both seem like OK designs and I've never heard of either one failing to light... but I haven't used either underwater so maybe someone else can answer.
mweitz
Contributor
http://www.gue.com/equipment/lights.shtml
A link is worth a thousand words.
I would choose Delrin over aluminum because it holds up to being banged around better. Delrin doesn't ding up like aluminum or oxidize. Of course, Delrin is black ...
Mark
A link is worth a thousand words.
I would choose Delrin over aluminum because it holds up to being banged around better. Delrin doesn't ding up like aluminum or oxidize. Of course, Delrin is black ...
Mark
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