Brushless Qs

[satinstruck]

Dear all:
I'm new here and would like to purchase parts from Gorillamaxx and build a electric E-Maxx. I already contacted George and received all the info from him. But, I'm just wondering what's the best brushless motor that I should get, how to get it and how much? Hope any of you could give me some advise!

[tallyram]

welcome! depends on what you want out of the truck. lehner 19 series would be the best option, but it comes with a $300.00+ price tag. maybe a wanderer xl for around $100.00 sounds better and will give great power versus price. you need good batteries and a good speed control also! the rcmonster.com store can provide you with everything you need for your truck, even gmaxx parts. the link is at the very bottom of the page on the right.

[squeeforever]

I would recommend something like a 1950 and Quark 125 or either a Feigao C XL with the Quark 125 on 5S or 6S LiPo.

[tallyram]

i wouldn't buy a quark. seems to me that there are a lot of issues to be worked out on them. btw, my 125b can't handle 6s lipo, that really sucks! its funny to me how there isn't a bulletproof esc for us brushless guys. all i can say is that i hope you are a lucky guy. tally.

[BrianG]

IMO, a recommendation for the Quark is based on two things:

- Only if you plan on running 5s or lower (or NiMH cell equivalent). Some work fine at 6s, some don't. Personally, just run it at 5s to be safe. Is this ideal since it is rated for 6s? Of course not - but complaining here won't change it; call the manufacturer.

- Only if you plan on adding a heatsink to the back. The metal cases simply are not big enough to dissipate the power. If running at 5s battery voltage with 100A of current, that is over 90 watts of power dissipated on the ESC assuming a very generous 95% efficiency. Of course not too many applications will draw that current continuously, but still.

If these two conditions can be met, then the nice programming options and silky smooth operation is a definite no-brainer. Not to mention a durable and easy mounting case design.

I think the problem with designing a bulletproof ESC is in part due to size contraints. Most people want an ESC with a tiny footprint, durable case, can be mounted easily, numerous programming options, high current handling, high voltage handling, won't burn up, and so on. It's tough to get all that in a small enough case to satisfy everyone at a price that won't break the bank. I'm sure the ideal ESC can be designed to fit everyone's needs, but I can bet it will be prohibitively expensive!

[squeeforever]

You have to hand it to Quark though. The only things I don't like about them is the fact that some have problems on 6S and the fact that they can't be programmed via computer.

[BrianG]

...And the lack of reverse braking. Although, as CHC (I think) pointed out in some other post, there IS reverse braking if you have drag brake available - just not as nicely controlled as forward braking.

Even with the relatively few negatives, I still wouldn't trade the Quark for anything that I've seen out there right now.

[satinstruck]

thank you very much to you all, i'll work on that and try to get my brushless project done asap