CC Blower....Blows

[georgec]

Well Josh the new fans showed up yesterday and they are a perfect fit in the MMM and CC Blows. As you wanted I will post a few pics as I go through the swap over, but first I want to explain why I do the wiring like I do. To begin I don't try and desolider and resolider the wires to the PC board on the back of the motor because the solider points are tiny, very close together and recessed in the plastic motor case. To me it's just not worth the risk of all the things that could go wrong like over heating the PC board or overlapping solider joints and on and on, so this is how we do it.

Here's what you get for the money



You will notice that the new fan comes with three wires, red, black and yellow. The yellow wire is not needed so cut it off as short as you can then cut the red and black wires leaving them long enough to work with.

Cut the wire to be reused off the old fan in about the same place that you cut the wire from the new one, this way the wire after joined will be about the same as the original. Then strip the insulation back on the ends to be joined about 1/8" apply flux paste to the bare wires and pretin with a small amount of solider, cut two pieces of heat shrink tubing 3/8" long and slide it over the wires back far enough that the heat won't get to it when you solider the wires together. Allot of people use the helping hands jig to solider wires together, I prefer a 1/4" thick piece of ceramic tile and a small lite weight clamp, a cloths pin will do. Now clamp the fan to the tile and solider the wires together, then slide the shrink tubing over the joint and shrink it with a heat gun or lighter. Slap that sucker back in the case, plug it up and you are good to go.



There are several differences that I noticed between the ball bearing and the old bushing fans, first off the motor is larger on the bearing unit therefore the blades are a little shorter and beefier, that's a plus also there is no up and down play on the ball bearing fan like there is on the bushing fan. Not sure what the CFM is but I can tell that the new fans are moving more air.

A side note on the CC Blows, when they made the fan shroud that fits over the motor they didn't allow any place for the air to exit after the fan pulls it in! So I cut away 5/8" between the two zip tie tracks leaving about 5/32" between the shroud and the motor. That way the air can exit almost as fast as it enters, taking the heat with it! Witch after all is the purpose of the blower....isn't it?
Hope this is of some help
GeorgeC