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Old 01-18-2017, 11:11 AM   #451
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Originally Posted by tc4basher View Post
Hobbywing and MMX escs have failsafe limiters that cut throttle in extreme conditions like speed runs where the motor pulls a lot of amps. Especially big high kv motors. The XLX used to do this too until they recieved new firmware. Now I consider it the best ESC for speedruns. The data logging and Castle's tunability cannot be matched.
The XLX still has failsafes, for instance the new TP CM2200 kv is made for 8 cell but the XLX can't handle it unless you run well under 1:1 gearing,anything over that it just cuts out as soon as you're near full throttle! But yes it's still the best compared to everything else out there other than an $800 MGM, not to mention it's nearly twice the size of an XLX
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Old 01-18-2017, 11:42 AM   #452
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The XLX still has failsafes, for instance the new TP CM2200 kv is made for 8 cell but the XLX can't handle it unless you run well under 1:1 gearing,anything over that it just cuts out as soon as you're near full throttle! But yes it's still the best compared to everything else out there other than an $800 MGM, not to mention it's nearly twice the size of an XLX
I know it still has failsafes but they are only tricked in pretty extreme conditions (too much kv, too many amps the motor is trying to pull, way too much gear, or all of the above). Night and day difference from the original firmware.

Im still not sold on MGM. I will have to see it produce some serious speeds before Im a believer. I still have not.

MGM actually just offered udluuz a sponsorship but only offering 20% off which still puts the ESC he needs in the $600-700 range. Just not practical to spend that much on a esc to do what we do.
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Old 01-18-2017, 11:44 AM   #453
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I have the 2200kv 4070CM sitting here at home. Do you think I should just buy the MGM instead of trying the XLX first? I was hoping to start out with the XLX and see what it gives me in data before I pony up for that much ESC. If I didn't have to worry about reverse then I could just go to a big flight ESC couldn't I?
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Old 01-18-2017, 11:47 AM   #454
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Originally Posted by Gunner1 View Post
I have the 2200kv 4070CM sitting here at home. Do you think I should just buy the MGM instead of trying the XLX first? I was hoping to start out with the XLX and see what it gives me in data before I pony up for that much ESC. If I didn't have to worry about reverse then I could just go to a big flight ESC couldn't I?
The xlx will power a 2200kv CM if you dont gear too high.

I still dont know anyone who has even tried MGM. Try it and let us know how it performs.
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Old 01-18-2017, 12:30 PM   #455
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Originally Posted by MallenP30 View Post
The XLX still has failsafes, for instance the new TP CM2200 kv is made for 8 cell but the XLX can't handle it unless you run well under 1:1 gearing,anything over that it just cuts out as soon as you're near full throttle! But yes it's still the best compared to everything else out there other than an $800 MGM, not to mention it's nearly twice the size of an XLX
How many amps does the esc need to be for it to power the TP CM2200 ?
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Old 01-18-2017, 12:30 PM   #456
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Hahaha I have a pretty good budget but not enough to make an 800 buck mistake. Their web site says it can draw 9000 watts.
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Old 01-18-2017, 01:04 PM   #457
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Originally Posted by MallenP30 View Post
The XLX still has failsafes, for instance the new TP CM2200 kv is made for 8 cell but the XLX can't handle it unless you run well under 1:1 gearing,anything over that it just cuts out as soon as you're near full throttle!
Have you tried it? I'd be very interested to see some logs of that to get an impression of the Current it tries to pull at such gearing.

Quote:
Originally Posted by Gunner1 View Post
I have the 2200kv 4070CM sitting here at home. Do you think I should just buy the MGM instead of trying the XLX first? I was hoping to start out with the XLX and see what it gives me in data before I pony up for that much ESC. If I didn't have to worry about reverse then I could just go to a big flight ESC couldn't I?
Quote:
Originally Posted by tc4basher View Post
The xlx will power a 2200kv CM if you dont gear too high.

I still dont know anyone who has even tried MGM. Try it and let us know how it performs.
+1 and post logs please Gunner1 .

For reference, TP Power rates their TP4070 2200kv CM at 264 A. My TP5660 1500 kv is rated slightly higher, at 280 A and I ran that with an XL2 ESC on 1:1 gearing (99 mph on GPS) on 6S with Current maxing at 'only' 235 A, see log-snip below. The Current will obviously increase when gearing for more speed and when throttling more abruptly, but if you don't go overboard right away, you shouldn't be instantly frying things just because the label says 264 A .

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Originally Posted by spectre View Post
How many amps does the esc need to be for it to power the TP CM2200 ?
Depends on gearing, and how you throttle, see above .

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Old 01-18-2017, 01:37 PM   #458
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Hahaha I have a pretty good budget but not enough to make an 800 buck mistake. Their web site says it can draw 9000 watts.
Catastrophes can happen any time in this game. Your whole car can be gone in 1 pass whether it's due to a blown tire or a shattered spur gear, etc... It just does not make sense to have an $800 ESC on the car while this happens
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Old 01-18-2017, 03:01 PM   #459
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I know. LOL I am building it because I totaled it. So like all of us it is usually build, race, break, upgrade, race, break. I do have to admit that the prospect of totaling this car is a bit more now with all the upgrades. I will be much smarter about my places to run this time. But I am learning so much from you guys. Thanks for all the help.
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Old 01-19-2017, 08:08 AM   #460
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Can someone recommend a gyro, i use a KO radio EX-10 eurus with RX:-411FH. I found a receiver that KO makes but is very inexpensive compared to the RX 411 FH receiver that i currently use , its half the price and am worried it won't have same range. I emailed KOpropo with no response on this product.

https://www.kopropo.co.jp/upload/pimgs/21006.jpg-212FHG Gyro System Receiver


No. 21006

[Specifications]
#Dimensions: 29.3 x 24.4 x 16.0mm
#Weight: 7.9g
#Operating voltage: 4.8 to 7.4V
#Frequency:2.4GHz(FHSS)
#Number of channels: 2ch
#Wire antenna
#Tin Plated header pins.
#Included Gyro system.

#Compatible models
Master unitEX-1 (KIY), Master unit EX-2(KIY),Esprit4, EX-5FH,RF-904FH,RF-903FH
*In use of EX-5FH, this is compatible to the steering gyro(3ch) only.

Made in Japan.

Description
Related product
Support
Blog
KR-212FHG is world's first gyro built-in receiver to correspond to the FHSS method.

The unit includes the receiver and Gyro system in a small case which does not require an extra space. You can install the unit in your car without difficulty.

You can enjoy settings the traction control in addition to the steering control, using the 3CH/4CH features of transmitter.
From a beginner to an expert, each can find its own setting. Let's enjoy Built in Gyro receiver.

[Connector assignment]
0:Battery
1:Steering
2:Throttle
3:Power Port (same saupply voltage)
4:Power Port (same saupply voltage)

#All response mode compatible.
#Fail safe function ready.


#What is fail safe?

In case of problem in radio system, this is a safety function that stops the cars.
The receiver judges the situations and send a stop signal. The car crash can be prevented.



Contents

Receiver x1
Connector cap
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Old 01-19-2017, 10:56 AM   #461
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First speed car for me, went and saw some shootouts and want to play.
Have a rustler roller and putting parts together.
Attached Thumbnails
Speed Run Electric (All Classes Welcomed)-32265648971_5545ea9446_o.jpg   Speed Run Electric (All Classes Welcomed)-32235459742_b3c7af59a3_o.jpg   Speed Run Electric (All Classes Welcomed)-31548343134_4d1601f5d2_o.jpg   Speed Run Electric (All Classes Welcomed)-31579878413_b54605074f_o.jpg   Speed Run Electric (All Classes Welcomed)-32270430821_e701066da5_o.jpg  

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Old 01-19-2017, 11:25 AM   #462
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Originally Posted by spectre View Post
Can someone recommend a gyro
I have used 4 different types.

2 external gyros-Futaba GYC 430 and HPI D box 2

2 internal gyros- Spektrum and Traxxas TSM.

still use the spectrum AVC to this day and Futaba has new gyro out GYC 440
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Old 01-19-2017, 01:09 PM   #463
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Quote:
Originally Posted by stick View Post
I have used 4 different types.

2 external gyros-Futaba GYC 430 and HPI D box 2

2 internal gyros- Spektrum and Traxxas TSM.

still use the spectrum AVC to this day and Futaba has new gyro out GYC 440
Txs so much will look up new the new Futaba, maybe it has improved over the others.
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Old 01-19-2017, 01:10 PM   #464
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Quote:
Originally Posted by stick View Post
I have used 4 different types.

2 external gyros-Futaba GYC 430 and HPI D box 2

2 internal gyros- Spektrum and Traxxas TSM.

still use the spectrum AVC to this day and Futaba has new gyro out GYC 440
IMHO gyros do nothing in speed runs. You have to turn the gain down so low to stop it from wiggling that it doesn't do anything.
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Old 01-19-2017, 01:12 PM   #465
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Quote:
Originally Posted by tc4basher View Post
IMHO gyros do nothing in speed runs. You have to turn the gain down so low to stop it from wiggling that it doesn't do anything.
Was thinking It would be necessary with rustler.
I do not know. All new
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