Quark 80b

[rcjmaxx]

I bought a Quark 80 a few months ago that I ran on 4 cells and its been thermal city from day one.Could someone please post the link with the mods needed to make this ESC bareable. Thanks

[lincpimp]

The quark esc are good, but you have to run a bec on anything over 2s lipo. I say this because the esc has marginal cooling at best. The internal bec will produce heat on 3s lipo and up. So the external bec will help it out. Using some thermal epoxy to stick a heatsink on the bottom is a good ideal. I usually ziptie mine tightly to the al chassis, but I plan to glue an al plate to the bottom, so I can mount it to the chassis with bolts. I have had great succes with my quark escs. I have 2 125b, 1 65, 1 80 air, and 1 125 air. I did fry a 65 a few months back, and have no idea what I did, but it was running 6s in an 1/8 buggy!

[jhautz]

Id say run it.

I had a bone stock 80B push my 1/8 buggy over 60 mph (verified with gps) on 5s. No problems. I ran the 80B for a long time in a 1/8 buggy and never had a problem with it. It seems every bit as capable as the MM to me. If not more so with the added capability of 5s and 6s, mine never argued at all on 5 or 6s. Like some have mentioned, As they get banged around in use the thermal tape they use to mount the fet board to the inside of the case starts to loosen up and then it tends to start overheating. Once this happened I did the thermal mod to it and I never had another problem. I don't run it anymore, it just sits in the spares box waiting for a project to come along. The other downside is, Quarks service in the USA has for sure gone down the tubes. I don't even know if anyone has figured out how to get anything serviced at all.

I have been eyeballing the new SSB-mk3 controller that is out in Asia and other parts of the world, and soon to be released in the US. It looks like the 125B, but with the thermal issue addressed with the addition of a heatsink and a smaller more manageable footprint. I'm just hesitant to try it without knowing that there will be any service backing.