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Fan cooling the RX-18
Posted: Tue Nov 17, 2009 10:52 pm
by Saxondog
After some thought and realizing that I had limited space how could I
fan cool my
RX-18 with maximum air flow.First I started with a
fan cooled unit from
Bill@rccommand.com This unit has a pre-installed small
fan wired to the power input socket,OK some
cooling.Then I read where most often it's the motors that over heat the board and air not circulating though the
RX-18 unit,then I had the idea of raising the unit and
cooling it with a
fan under the unit pulling air from top to bottom,as it pulls in fresh air from the top,it carries heat with it and blows the heated air out the bottom.Here is what I did.
- Step one alien the bottom cover of the RX-18 with component tray.Drill 3mm holes x 4
- Here I have added the spacer nuts,these are 3mm threaded completely threw,this creates the lift for air flow.
- Bottom cut out,this is 1mm less than the outside edge of the fan.Also at this stage use glue or putty to seal screw heads,this will prevent shorting of the RX-18 unit.
- Here I have added the fan,used super glue.Make sure that the fan centered over the hole.
- Here you can see the fan blades,they do draft alot of air,also note the top fan.
- The finished unit mounted to component tray.This tray is from the ASIATAM TIGER lower hull,but the unit can be bolted into a stock hull as well.wired and ready.When power is on fans are working.Note:test fan wiring to make sure fan is running to pull air,fan will run either way.
Re: Fan cooling the RX-18
Posted: Mon Nov 23, 2009 11:10 pm
by STEINER
Re: Fan cooling the RX-18
Posted: Tue Nov 24, 2009 12:08 am
by xrad
very nice!!!
Not to steal your glory, but for added safety , I added an inline 5 amp quick blow fuse on the red power to board ...fuse will not blow if normal track motion used, but flash and track recoil burned the fuse. So I track motion disabled with modellbau unit and this seems to work. Probably need a 7.5 amp quicky.
Re: Fan cooling the RX-18
Posted: Tue Nov 24, 2009 12:41 am
by Saxondog
The power lead has a 5AMP Quick connector,these are normally used when we install L.E.D.Lighting system on motorcycles,their a great little connector up to 15amp and 12ga wire are available,But I have not burned one yet.Prior to this mod I had damaged a RX-18 UNIT and since the fan install and the fusible connector I have had no problems,also 3:1 ratio gearbox w/12tooth pinion helps. Which modellbau unit are you referring too? Sax
Re: Fan cooling the RX-18
Posted: Tue Nov 24, 2009 6:36 pm
by xrad
the one that disables the track recoil when you fire the main gun..I forget the model number
Re: Fan cooling the RX-18
Posted: Tue Nov 24, 2009 9:49 pm
by BREL
here is the tank Madelbau.de home page
http://www.tank-modellbau.de/
and click Zubehör-Elektronik in the left hand pane and the have a look at the anti HL recoil devices
Re: Fan cooling the RX-18
Posted: Tue Nov 24, 2009 10:26 pm
by Saxondog
Thanks BREL,Sax
Re: Fan cooling the RX-18
Posted: Wed Nov 25, 2009 12:34 pm
by STEINER
Sax, after seeing and speaking to xrad about this unit, I plan to fit one to my Tiger. Will it be ever finished. LOL
Re: Fan cooling the RX-18
Posted: Wed Dec 02, 2009 3:48 am
by Saxondog
I also have this mod for firing airsoft with recoil and fire sound,left up joystick and everything works at the same time.Still have some problem with micro-switch in the VS Gun,it will stick at times and the recoil servo will jam barrel back.Sax
http://rccommand.com/guides/RX18FireMod.php
