Alien speedo

[T.S.Davis]

...not that kind sickos.

Some of you know we have a few of these at MMEU.

Messing with the 2-8s 250 amp with BEC first.

First thing I noticed.....no water resistance at all.

So I coated with DP270, added fresh heavy duty shrink, and then gooped the ends closed. Not water proof but closer.

Software link is pretty slick.

Water cooling made me wonder about it's effectiveness. Interesting though, the cooling tubes include the actual motor lead wires at the board. I think that's where some of the FC units were failing back in the day.

I hope to get some laps in with one tomorrow.

[Rocstar]

Terry, do you have a picture of these? Curious if they have made any improvements. The FC cooling blocks would sometimes fail and the controller had no epoxy at all. Just condensation under the shrink wrap would take out a 300a ESC. I've been using 3M DP270 Epoxy with good results also.

[urbs00007]

...not that kind sickos.

Some of you know we have a few of these at MMEU.

Messing with the 2-8s 250 amp with BEC first.

First thing I noticed.....no water resistance at all.

So I coated with DP270, added fresh heavy duty shrink, and then gooped the ends closed. Not water proof but closer.

Software link is pretty slick.

Water cooling made me wonder about it's effectiveness. Interesting though, the cooling tubes include the actual motor lead wires at the board. I think that's where some of the FC units were failing back in the day.

I hope to get some laps in with one tomorrow.

could you explain your epoxy potting process and results after submersion in water?

[T.S.Davis]

I ran this this last night. Didn't love it. RPM seemed off. Really strange spool up too. BEC didn't work either.

I'm going to up the timing and see if that makes a difference. I'm only at 4 degrees on a 2215. Pretty light. Then I'll swap in a Castle HV to see if there is a difference.

The 250 has no cooling plate. It's tubes soldered right to the board. Weird.

I'm not planning to dunk it on purpose. It's just some insurance.

[gsbuickman]

Wow, I've seen some, shall we say, creative backyard water cooling setups, but never anything as hokey' as tubes soldered directly to the board . even the 200A turbojet ESC I had was designed better than that. I was impressed at how well it performed for a $50 ESC. The new turbojet 200A's look just like Flier's now, rather than rebranded Turnigy's.

Have you ever filled ESC:'s with spray in plasti-dip ?.

[urbs00007]

alien speedo

Terry, do you have a picture of these? Curious if they have made any improvements. The FC cooling blocks would sometimes fail and the controller had no epoxy at all. Just condensation under the shrink wrap would take out a 300a ESC. I've been using 3M DP270 Epoxy with good results also.

if you are concerned with condensation, wouldnt just a couple coats of conformal coating be sufficient? everybody likes the idea of a bullet-proof water-proofing method. something that you can submerge and keep running without failure. I tried corrosion-x on an older fightercat 300 but havent run it yet, however recently hooked it to a set-up and it didnt work. so I'm reluctant to use it on expensive esc's. maybe some-one out there (with more money than I) could test a complete set-up esc, servo, receiver treated with corrosion-x and submerge it. see if it does indeed work. I'm sure all of us would treat our systems if the test proved positive results.

[T.S.Davis]

It's not a horrible water cooling setup. Just odd. The tubes are soldered right to the leads of the fets in one spot and then to the motor wires on the other side of the board. I should have taken some pics. Sorry guys. No getting in there now. There was some layering that kept things from dead shorting. I think it works. I only have one run it. IN really cold water. 50 degrees maybe. Not a very good indication of the effectiveness of the cooling system.

The old RC hydro speedo were cooled with tubes soldered to the supply wires I believe. Those were only 90 amps but they were tough as nails. They were epoxy coated and you truly could run them in a bucket of water. Andy, I know your on here from time to time. Could you please design us a new ESC and I'll find a way to get it manufactured? Pretty please? With sugar on top? Maybe a cherry?

Is Schulze still making speedo? We need some reverse engineering off those if they aren't. Big efficient low resitance fets and nearly un-killable. If those were waterproof somehow we would all be running them. Provided the price was right of course. $750+/esc is not going to happen for most. A $275 8s/250amp bullet resistant speedo would be the ticket.

Dream'n.

[srislash]

It's not a horrible water cooling setup. Just odd. The tubes are soldered right to the leads of the fets in one spot and then to the motor wires on the other side of the board. I should have taken some pics. Sorry guys. No getting in there now. There was some layering that kept things from dead shorting. I think it works. I only have one run it. IN really cold water. 50 degrees maybe. Not a very good indication of the effectiveness of the cooling system.

The old RC hydro speedo were cooled with tubes soldered to the supply wires I believe. Those were only 90 amps but they were tough as nails. They were epoxy coated and you truly could run them in a bucket of water. Andy, I know your on here from time to time. Could you please design us a new ESC and I'll find a way to get it manufactured? Pretty please? With sugar on top? Maybe a cherry?

Is Schulze still making speedo? We need some reverse engineering off those if they aren't. Big efficient low resitance fets and nearly un-killable. If those were waterproof somehow we would all be running them. Provided the price was right of course. $750+/esc is not going to happen for most. A $275 8s/250amp bullet resistant speedo would be the ticket.

Dream'n.

This would be nice now that Castle is out.

[T.S.Davis]

This would be nice now that Castle is out.

Yeah, they were never perfect by any means but relatively predictable.