Topic: Fan replacement parts?

[azchrisf]

Just got a new 6163. Considering the fan is a wear item, and I would like to keep one or two on hand for when it breaks since it's 24 hr, what is a replacement motor, or entire fan assembly for it?

Thanks guys

[CW2274]

When I got tired of Davis motors frying I used this, most likely better than the stock motor (what's not ), but I didn't use it more than about 4-5 months. Works great but no true idea of how long it'll last.
http://www.jameco.com/z/RF-500TB-18280-R-Nichibo-Taiwan-3-Volt-Dc-Motor-2104-Rpm-1-3-Volt-Range_2158442.html

[azchrisf]

Looks good.
I see the fan replacement kit sold by Davis is potted, what about removing the original, and the potting with this replacement?

[CW2274]

All I did was dig the old one out, slide the new one in. It needs to be centered into the fan motor housing because it's slightly small. Many ways to make/use something to center the fan which is a must to keep the blades from rubbing the side. Hellofalot cheaper (and probably better) than the whole fan assembly.

[azchrisf]

Absoultely. $65 for a fan is stupid.
What do you recommend to center it with?
I can pot it myself with a little liquid rubber like Plasti dip brushed on or something. Not going to hard pot it with epoxy resin or I'll have to buy a whole new fan assembly lol.

[CW2274]

All I used is thick two-sided tape (just something I had), wrapped it around once or twice making it a concentric fit and leaving the outside "unpeeled" so it would slide into the hole. Worked beautifully. Like I said, many ways to accomplish the task, but it's gotta be right, very little wiggle room.

[azchrisf]

OK Thanks bud!

[Aardvark]

for me it is easier to buy a new fan from Scientific Instruments,  However, I have found that it is generally the batteries that give up.  I purchase my own rechargeables  and they last about 2 years before quitting.  I have to replace mine fan and Ihave the kit over on the table, probably I might wait until summer of next year to do all that.  Having FARS in winter isn't too great for me.

[ct]

My original Davis fans had the motor held in place with hot glue.  The hot glue can be easily removed by putting some isopropyl alcohol on it.