The Nidec-Servo's Scythe Gentle Typhoon (Model# D122C). This fan has been regarded as the best static pressure optimized fan by DIY PC community since it's release in 2008. The original D122C is no longer made, but there is limited stock available at some online retailers. Last year the D122C Scythe GT fan was resurrected and manufactured as "Darkside Black Edition" by Dazmode. It's the same specs as the original, but now has Black fan blades. Many PC Modders including myself have painted these fans to fit the color schemes of our custom PC builds. I've been asked several times over the years how to remove the metal c-clip without losing or breaking it?*This is my DIY guide to removing and installing external retaining ring or c-clip. Like many others, I've also lost these tiny c-clips while learning the best technique for handling this task.
 
Nidec-Servo's Scythe Gentle Typhoon Factory Spec PDF link, http://www.nidec-servo.com/en/digital/pdf/D1225C.pdf*
Speed: *2150RPM
Air performance : 68.8CFM
Nose: 34db (25cm from the fan, free air)
Power: 12VDC, 0.123A (0.63A peak max)
Operational voltage range: 5-12V (~900rpm-2150rpm)
Bearing: Ball
Expected life: 100000h/35c or 55000h/60c
Appearance: Full black
Dimensions: *119 x 119 x 25 mm / 4.68 x 4.68 x 0.98 in
 
 
WARNING:
 
Perform this task with Safety Glasses, the tiny Black metal retaining ring (c-clip) can and likely will pop off, so perform this task in a clean workspace, so you can find it. I suggest doing the work on a large white bed sheet and holding a large magnet near the fan hub as you remove and re-install the c-clip, to increase you're chances of not losing the c-clip. I haven't found a source for ordering replacement c-clips yet, but I'm still searching.
 
 

 
Here is my suggested Tools & Supplies
 
Safety Glasses (not pictured)
Heat Gun for removing the fan label. Hair Dryer on HIGH setting will work as well.
10" Wire Cable Tie
Large magnet (not pictured)
External Fixed-Tip Retaining Ring Pliers, http://mnpctech.com/case-...-or-c-clip-pliers.html
Tweezers
Needle Nose Pliers
Super Glue (not pictured)
 

 

 
External Fixed-Tip Retaining Ring Pliers, http://www.saeproducts.com/retaining-ring-tool.html
 

 
The fan blade looks as if it would snap-on and off, but not the case.
 

 
We need to remove the back label to access the external metal c-clip on the fan shaft.
 

 
Swipe heat gun or hair dryer back and forth over the label.
 

 
Use the Tweezer to peel off the fan label.
 

 
Stick the fan label on a clean metal surface while you perform your work.
 

 
You will tie down the fan hub with this Twisty tie. The fan shaft has a retention spring inside. You need to compress this spring, so you can remove the metal c-clip. If you don't, it's almost a guarantee that the c-clip will fly off the shaft faster than a bullet.
 

 
Using Twisty tie to compress the fan hub spring, by tying down the hub to the fan frame.
 

 

 
Close ups of the Black metal c-clip inside the Scythe Gentle Typhoon.
 

A e-clip should work just as well: https://www.teamassociate..m/parts/hardware/clips/ Rc cars have the same size and type rod/bearing axles, suspensions etc.... As far as taking those little things off I used to use a clear garbage bag with my hands and the part in it.

@wmmills, Awesome, Thank you!
 
@Nozler, a dirty black shop floor is even worse, and Thank you for purchasing the overkill grill!
 
for future purchases, I've posted Mnpctech Discount Voucher code for EVGA forum members here, http://forums.evga.com/VO...Supplies-m2409799.aspx

Awesome! I will contact them, and look into stocking them for anyone who may lose theirs, Thank you!

Awesome, I have more DIY guides I'm working to share with EVGA forum members. Here is another fan I found in our workshop that utilizes the same Black metal e-clip / c-clip. It's a 120mm Delta WFB1212H

Glad you liked it! I'm working on another DIY guide to post later this week!