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lutach 10.03.2008 11:21 AM

Lito,

I posted a few pictures in the ESC thread. They are for references only and you can use different caps as well if needed. Please do like I did to secure the stock caps so they don't bounce around.

MetalMan 10.03.2008 01:28 PM

Quote:

Originally Posted by George16 (Post 218744)
I think you are right. It does make sense. The abrupt stop and go was probably too much for the FETs to handle without the caps.

Even Schultze tells you to use extra capacitors if your wires exceed a certain length. If my memory serves me correctly, this is due to the added inductance as a result of longer wires.

lutach 10.03.2008 01:48 PM

Quote:

Originally Posted by MetalMan (Post 218858)
Even Schultze tells you to use extra capacitors if your wires exceed a certain length. If my memory serves me correctly, this is due to the added inductance as a result of longer wires.

True. The wires on my ESCs are short and thicker then most of the Schulze ESCs and only their big dogs use 2 wires. The problem was what you pointed out before.

George16 10.03.2008 08:12 PM

Quote:

Originally Posted by lutach (Post 218815)
Lito,

I posted a few pictures in the ESC thread. They are for references only and you can use different caps as well if needed. Please do like I did to secure the stock caps so they don't bounce around.

Thanks for the pics. I'll definitely put more reinforcement in there to keep the caps from moving.

George16 10.18.2008 08:39 PM

Is it okay to put 2 additional capacitors even though it does not match the stockers? The 2 additional caps are rated for 35V, 105*C, 2200uF. These were given to me by killajb.

lutach 10.19.2008 09:16 AM

Quote:

Originally Posted by George16 (Post 223859)
Is it okay to put 2 additional capacitors even though it does not match the stockers? The 2 additional caps are rated for 35V, 105*C, 2200uF. These were given to me by killajb.

Yes.

George16 10.19.2008 09:33 AM

Thanks. Now I can solder them tomorrow. I was just making sure that it's okay to do so.

George16 10.26.2008 01:24 AM

Here are some pictures of the 3mm aluminum plate I cut and installed on the bottom of the ESC. I also added the 2200 caps killajb gave me. Performance wise, I got the ESC temps to 150*F, motor at 112*F, and batteries 98*F yesterday. This was stop and go running on asphalt. I also experienced hesitation when I tried to run wot. Batteries are Neuenergy 25C 5000mah.

Anyway, here are some pictures:

http://i256.photobucket.com/albums/h...Picture171.jpg

Also glued a piece of rubber underneath the aluminum plate.
http://i256.photobucket.com/albums/h...Picture184.jpg

Added caps on the power wire. I also shrink-wrapped the standoffs.
http://i256.photobucket.com/albums/h...Picture173.jpg

http://i256.photobucket.com/albums/h...Picture172.jpg

http://i256.photobucket.com/albums/h...Picture175.jpg

http://i256.photobucket.com/albums/h...Picture183.jpg

I also installed some plastic spacers to clear the capacitor wires. The spacers widened the gap between the board and mounting plate. Better airflow for better cooling. The gap is about 3/8".
http://i256.photobucket.com/albums/h...Picture174.jpg

http://i256.photobucket.com/albums/h...Picture170.jpg

Gap before I installed the plastic spacers.
http://i256.photobucket.com/albums/h...Picture169.jpg


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