Aquacraft UL-1 ESC fix quastion...

[LiPo Power]

My ESC cap went bad and I was only able to run my boat full speed. Little relax on throttle and ESC had to be armed again and again... I had replacement sent from Aquacraft but I would like to fix my old one by soldering new cap or two to power/battery cables. I know it will work becouse I saw thread about how to do it here before, can't find it any more.
Can someone let me know if I can replace my old cap 25v, 680 microns, 105 C temp with this one 25V, 1000 microns and 85 C temperature rating? And will this work properly or it must be the same one?
Thanks
Robert

[domwilson]

It should be ok. Try it. Ideally you want one or two with Low ESR ratings and the same or higher temp rating. But 85c is 185f. Try not to exceed 150f.

[LiPo Power]

New Cap on UL-1 ESC

This is my fix. Will see how it works soon.

[LiPo Power]

This fix works great. No problems with this ESC at all.

[domwilson]

Looks good. How many runs have you got on it since the fix? What are the temps?

[LiPo Power]

On the above fix I did 5 full runs with good temps of ESC and motor. See pictures. Cap was 137F so I have changed it to 25V, 1500uF and 105C to be the same temp the stock was. It works great but did not do any temp pictures of the new cap set up yet. I will and continue posting.
Cheers

[LiPo Power]

Second Fix ESC cap UL-1

This one should be much better with temperature. I will post picks of motor, esc, cap temps next time.

[Doby]

Nice Caps......wonder where you got them!?!?!?!?

[LiPo Power]

Nice Caps......wonder where you got them!?!?!?!?

Can't remember his name but he will be at the Toronto pond on Sunday. $100 dollars each, Canadian!

[sailr]

$100 for a capacitor! Jeeeez. They are $1 each at www.kintecracingusa.com

[Doby]

You have to figure in the exchange rate!

[domwilson]

You can put the first one back on with this one and get a total of 2500uf @25v and that will lower the total ESR.

[LiPo Power]

UL-1 temps with new cap fix

Here is few pictures after another run with new cap installed. All works good and temps are fine after full run, full throttle most of time.
Robert

[LiPo Power]

Second UL-1 ESC with extra cap

This is my back up ESC that will be used in my winter project. It has extra cap installed the neat way....
Robert

[pescador]

I installed 2 of kintecs caps after puffing the stock one and all was good, then she died in the middle of a run.
The motor would only turn a few times and stop. The motor seemed pretty hot so I figured I was looking at a new motor or esc or both.
When I took out the motor I found the bullet on the red motor wire was just held on by the insulation.
I knew they were suspect and I had replacements but hadn't changed them out yet.
So now everything is good again.
Last nights run on a GR 40 52/3 prop with Flightmax 30c 5000mah packs
Temps were motor 81
caps 106
esc 90

Change out the stock bullets!