1s esc from castle
 

Hi Patrick

A little birdie told me today that you guys will be releasing a 1s spefic esc soon, is this true ?. If so can you tell me some of the details if possible, such as price features ?. Thank's

Pat is in china

Thats okay . Anybody from castle with any knowlegde of this can answer .

If you are not into racing 1/10th pan cars you could not beleive the firestorm that has been raised about running the Mamba Max Pro (with mods) on 1S. These guys are just about s--tting themselves that you can pick up .1-.2 sec/lap with just a speed control, and one that only costs $128.

YEAH, CASTLE!!

Rds(on) FTW

I don't think it is Rds(on), I think it is C.H.E.A.T. mode.

I'd be interested in more details as well, I have a GenX-10 World GT car that would love a nice 1s esc.

Yeah, CHEAT is probably the biggest help here. A lower rdson does help reduce voltage drop at high currents (and therefore more v at the motor), but the difference in speed would be minimal.

I am aware of the pan car guys using the MM pro . I saw alot of them at the track this weekend . I understand you have to pop one of the chips or resistors of the board . I was told this is very easy because the chip you have to remove is only crimped on the board & not soldererd on . I heard they will have one specific for 1s.

FASTXR

I have a GEX 10 wgt as well . I like it alot .

Is there a link to this mod? I'm curious now. Not that I ever plan to run 1s, but might be hand for a non-RC project I'm thinking of...

I was unaware of what the actual mod was, although I had ready that guys were doing something to them for 1s. I'm still using a Smart boost and GTB in my GEX 10 for now as that isn't my primary race class (only about 3 cars out on a weekly basis). I do love the GEX 10 though its a dream to drive, handles like its on rails, too bad the driver keeps derailing it :oops:

If Castle comes out with a specific 1s MMP I would go seriously consider losing the GTB.

Brian

I dont have a link . I only heard the guys talking about it at the track . I'll see what i can find out.

I found this thread on hobbytalk. they talk about it here. I resquested the info about the mod . I will foward it to you if & when i recive it .
http://www.hobbytalk.com/bbs1/showthread.php?t=273365






FASTXR

Im using the 4 cell gtb & booster in my gen x 10 . I would also consider switching esc's . If castle comes out with a 1s specific esc .

I ran 4 cell last year, but decided to go fully lipo this year, to cut down on the amount of stuff I need to haul to the track.

Please let me know as well if you find out details on the MMP mod.

Brian & fastxr

I found out they are removing the voltage regulator & playing with the software in the cheat mode . They said something about 1s software .


FASTXR
I use lipo as well . I just use the 4 cell gtb because it fits my car in the middle behind the battery & in FR of the motor . I also noticed some of the oval guys were removing the case & just using heat shrink like the BK'S did .

Well, I read about 7 pages of that thread before I got tired of the general whining. Man, some racers are such whining p*ssies! Sorry, but it's true. This is a hobby and meant for relaxation isn't it? Where did they lose grip with reality?

Anyway, from what I gather, they are removing the regulator (not clear if it's the UBEC or some other regulator IC - probably linear due to the dropout voltage), flashing some special 1s software, and fiddling with settings.

Some things I see that are wrong but most don't seem to have the intelligence to think of it (or maybe just so worked up with their stupid debating):

- Instead of a receiver pack, use an DE AnyVolt micro to step up the 1s to whatever they want for the receiver/servo. Weighs a lot less and the 1.2A rating should be adequate for their use. Maybe add a capacitor to the output to help cope with the current spikes.

- Measuring output voltage at the motor wires with a meter is meaningless, even with a true RMS meter. The output of these things is square wave, not sine wave, which is what RMS is supposed to measure. The best way I can think of (other than using an o-scope) to see how much voltage is being output to the motor would be to put it in brushed mode, add a ~470uF capacitor at the output with a ~100 ohm bleeder resistor, then measure DC voltage. I say brushed mode because the voltage at the wires won't switch polarity as long as you stay in the forward range. In BL mode, the wires are omnipolar depending on which coil is being fired. The capacitor simply filters the square wave to a smoother DC signal that any meter could measure. The resistor is just there to bleed off any momentary voltage spikes, if any. And to get a true comparison, they should measure the battery with the same meter to get a "calibration" reading.

Ah the 4 cell version of the GTB, I miss read what you said earlier, makes sense that would be a nice light setup and cheaper than buying the 6 cell version.

Open your eys :lol:jk . With out the heat sink of the gtb it fits great.

Brian i agree with you about the whining :lol:.

But sinice i started this thread about a castle 1s esc. It would be great if we could keep it on topic . I started a WGT thread , so we can move our talks over there .

Yes we will be releasing a limited amount of 1 cell specific Mamba Max Pro's with the next production run. If there is enough of a demand we will make more in the future. They will come with solder posts instead of motor wires and there will be no fan.

:yipi::yipi::yipi::yipi::yipi: How do I get in on that limted amount?

Interesting. Just curious, what mods/steps are needed to turn a regular MMPro into a 1s version? Not that I plan to, just would be nice to know (and yes, I know it voids the warranty). :whistle:

Of course, you probably won't want to divulge this to avoid bogus warranty claims...

Is it possible to pre order the 1s esc or do i have to have my friends hobby shop pre order one ?. He is a authorized castle dealer in tampa fl .

(Suffering from a little jet lag here in China -- been awake since 4:00am...)

It involves removing the buck converter (BEC) from the board, so that it can be powered by an external 6V battery for the ESC and servos.

Without removing the buck converter, the external battery will allow current to flow from the RX battery to the main 1-cell battery - - not good...

Should be able to do either. However, you (and your dealer) will have to wait until we have all the part numbers in the system -- you can't order until that is done.

Thanx!

Is one better to do that the other ?. There were alot of the MM pro's at minnreg this weekend. This race is a club level race put on by mike boylan . The oval guys were using them the most from what i saw .

I want solder post on my current MMpro. Any chance of sending me a set?

Will it be available for purchase thru your web site Patrick, or do I need special connections?

Well CHEAT mode advances the timing, right? That causes the motor to draw huge amounts of current compared to normal timing, right? Low Rds(on) allows more current to flow and for that current to rise more quickly, right?

Haha, yeah I know we're both right... :mdr:

Yes, the oval racer community is really whining about this. They are sooo offended that you can pick up a tenth or so with a speedo.

Not everyone uses a receiver pack. Novak makes a booster module that steps up the voltage, but it also incorporates a cutoff so you don't dump the battery too far while practicing. Some people don't waht the extra wiring involved so they use receiver packs.

I couldn't beleive the guy tried to measure the output voltage with a multi-meter on AC.

Good point, but I don't think a 13.5 Novak can draw the huge amounts of current you are talking about. I run one of these cars and the average current draw for a 5 minute run (flat out - full throttle all the way) is only 20 amps.

I want one (or two).

I was looking at the Oscope in my garage yesterday and decided to hook it up to to my speed control. The output phase to phase is actually a pretty good looking sine wave with just a little distortion (not the waveform but noise on the waveform). When you look at a phase referenced to battery negative the top of the wave is slightly concave. I think phase to phase, using a meter would show an accurate RMS value. I was wondering if a lower Kv motor might look different but then my wife made me put up Xmas lights so...I didn't get to try a lot of the things I wanted to and I am out of town until Wed. Then I leave again on Thurs.

The test setup I used was:
MM and 7700Kv
2S2P A123 just about dead
OLD BK 10Mhz dual trace O-scope
Used my radio and just set the throttle trim so I could adjust the scope.

Jeff

I'm not saying to you J57ltr, but for others that want to use an o-scope: Be careful how you hook it up! If you hook the ESC to a bench power supply, you MUST use both traces of the o-scope! Hooking the o-scope ground to any of the motor wires will most likely end up with a blown ground trace on your scope! If using a battery to power the ESC, you can use the scope ground if you want.

Hi PATRICK

Any idea when that will be & the approximate price ?.

Here you go gents, I present to you the Mamba Max Pro 1s Special Edition speed control. Right now they are not available, we are only taking preorders at this time. The release date is set for the first week of January. Because this is a test run to see if we want to keep this as a normal product, it has not been released to distribution yet. If they catch on as we hope, they will become a permanent product. You can find the details on our website, the price is set at $149.99 which is the full retail.

Please remember that is is the 1s version, so it will not have an onboard BEC. Also this controller will have solder posts instead of wires and will not have a fan or a switch.

Those of you that do not need a 1s version, it is recommend to purchase the normal Mamba Max Pro through the normal distribution channels (IE Mike); it will be cheaper because of retail and MAP pricing and we would rather see you purchase it through a reseller.

Let us know if you have any questions fellas!

Thomas Porfert
Castle Tech Support

I know some people are moding the mm pro to run on 1s . What are the advantages or dis advantages of buying the 1s esc versus modifing a mm pro to run on 1s ?. Thank's :smile:

Warranty.

I figured that much :smile:. I was just wondering if there was any other difference besides that & not having a fan . So is the 1s mm pro going to be basiclly like a modded mm pro, but with a warranty ?.

Yep, we're just not putting the switcher on these versions. Then the mods of solder posts, no switch and no fan. It will include information on the special software and of course it has the standard 1-year warranty.

Thomas Porfert
Castle Tech Support

Special software? What is special about the software.

Also that was fast in getting this stuff together, good job guys! I will be placing an order before the Dec 11 cutoff!

Because the speed control's processor won't operate correctly below a certain voltage. The special software allows the controller to keep the voltage above the minimum operating voltage of the processor. Without the software the controller will shut off randomly when the voltage dips down below the minimum.

Ahhh very cool, I hate when my controller randomly shuts off! :lol: