Yeah I run mine on the side now, but only a small 40x40mm heatsink is exposed, which is better than nothing and It does catch airflow being on the side which is good. I think since I installed the heatsink it runs 3-4 degrees celsius cooler.
Before I ran my vescs on the back of a 3dprinted enclosure. While in that orientation the airflow wasnt great it did still do a good job to keep the vescs cool. I remember when I switched to the fully closed enclosure and noticed higher temps.
Marcel has them fully exposed by having a slit which lets air in which must help a lot better with cooling for sure.
As air flowing over the top and side of the box It creates a low pressure zone behind it which creates eddies. I imagine the swirling air pattern would still be effective at removing heat from the plate
does anyone have the correct vesc6 mounting pattern? The trampa one is not correct. I would like to fix the files and get an order in, so I can do a nice black friday sale for yall.
@Battery_Mooch
Solid set of tests. Are you using thermal compound between the resistor and plate?
Iâd also argue with the size of the resistors. I feel that much larger area would be more representative of the esc housing attached to the plate. Although that is probably not going to hugely affect things. Maybe doing 4 resistors total would be slightly better. Probably wonât affect final temps, but i do think hysteresis will be different
Yes, thermal compound or epoxy will be used for the resistors. But that wonât matter as I am only going by temperature changes from an initial setup based on heat sink orientation and air flow. It will make it easier to heat everything up though and spread the heat more evenly.
I will probably find the power level that brings the resistors up to a steady 70°C case temp with the sink mounted horizontally in still air. Then I will hold that power level steady and try different orientations and moving air to see what affect that has on the resistor temp.
I donât think using four resistors will make for much of a change. On the ESC the heat is all localized to the row of MOSFETs, making for two strip sources of heat for two ESCs. The ESC does have a heat spreader plate but I donât think adding another plate between the resistors and the mounting plate will have that much of an effect for the steady state stuff Iâm doing.
If we were trying to model the response times and temps for non-continuous heating (like when riding) then I think you could be right and I would want to use another plate between the resistors and the mounting plate. There are just too many tests to do for this kind of modeling though and I just donât have the time.
Having said all this, if I can find another piece of 1/8â (or so) aluminum Iâll add it between the resistors and the mounting plate. Even if it doesnât make much of a difference it doesnât take much to add it to the setup.
Asking as nicely as I can, is it possible to get the cam file? Working on my first board pleaseâŚ?? I have access to CNC machine and software donât have money but I have access to cool toys.
SecondâŚwith access to that kind of technology you should be able to make a good chunk of change making simple parts for people.
AlsoâŚyou can just design a heatsink yourself, this is a fairly simple part. The infinitysink is definitely more complicated due to the counterbores and multi esc support. You can literally just make a round rect, extrude, and then make fins. Just ditch the infinity aspect, and I guarantee you can have a decent enough design in an hour or two.
There ya go. Definitely will be easier on a computer, but ipad onshape whips too, great for simple stuff. Made a ton of spacers for frc last year on the iPad lol
