Kagama Stock Kagama overheating

[lefty0184]

Hi Jas,
If you get the 40mm two wire things will be easier.. Do you have a spare servo extension cable or an old servo you can cut the cable off? If so just solder the two cables off the fan (cutting off whatever plug came on the fan ) on to the servo cable then it'll plug right in to your receiver.. You can get bundles of JR servo extension heads from aliexpress for cheap so if you don't have any grab some while buying the fans.
The fan you want for the ESC is a 30mm aluminium rocket fan or similar. Getting the red cover off the esc can be a bugger but just take your time and wiggle it off bit by bit and she'll come off..
If you need a hand or more info or links ( or photos) let me know and I'll send you all you need..
Cheers mate
Mark

Hi Mark

Thank you for the quick reply. . Fantastic help from you . I've ordered the parts and keep you updated.
Thanks again.
Cheers.
Jas

 

[Mark383]

Hi Mark

Thank you for the quick reply. . Fantastic help from you . I've ordered the parts and keep you updated.
Thanks again.
Cheers.
Jas

Hi Jas,

Awesome mate glad I could be of some help.. Best of luck with it mate look forward to seeing the results. Cheers

 

[Atomic Skull]

Should I
1) Install motor fan(s)
2) Use a lower tooth pinion
3) Both
4) Run 4S instead

40mm fan and CF faceplate:
https://www.aliexpress.us/item/3256802605170003.html

My 40mm fan came with black wires both + and - the polarity follows the convention for servo connectors looking from the side with the "latches" that keep the crimp terminals in the + is on the left and the - is on the right. If in doubt just compare it with a servo plug. Probably a good idea to transfer the terminals to a three position housing to prevent accidental reverse polarity.

EDIT: the silver standoffs that come with the faceplate go in the countresink holes on the fan so that the faceplate is raised up 1mm above the fan and won't interfere with it.

Two of these:

https://www.aliexpress.us/item/3256806772118044.html

The m3 setscrew in the hole on the bottom jaw is a bearing surface for the screw on the upper half. Set it in place with some threadlock before installing with the setscrew protruding about 1mm so the upper screw touches the setscrew and not the aluminum. Install by tightening the upper screw. Do not over tighten, just tight enough so that the mount does not move and use threadlock on the screw to keep it in place. If you chimp fist it the hinge will break, two finger tight is a good rule here.

For bonus points use an RC controlled switch to turn the fan on and off when the throttle is enabled.

EDIT: I tried two 30mm fans and I had to pull them out because of how obnoxious they were, they were horribly loud and there were harmonic resonances between the two fans that amplified vibrations and made the noise even more irritating.

 

[Sandracer_NL]

Probably a good idea to transfer the terminals to a three position housing to prevent accidental reverse polarity.

I’ve had accidental reverse polarity with two wire fans (both wires black) on servo pins. The fan just won’t work, but will not short circuit. They worked fine once I rotated the connector.

 

[Atomic Skull]

I’ve had accidental reverse polarity with two wire fans (both wires black) on servo pins. The fan just won’t work, but will not short circuit. They worked fine once I rotated the connector

They probably have some form of reverse polarity protection I wouldn't trust that all fans are like that. Brushless fans are not like brushed DC fans where connecting them backwards doesn't harm them. Its like connecting an ESC backwards.