RCCrawler Forums

TheHeadHunter · 05-28-2008, 09:21 AM

I will be getting a good ESC soon or a couple of good ESC's (saw the thread about a Sidewinder in comparison to a Tekin FXR)

I wont be going brushless but will be doing some Cobalt 7t/6t/10t motor setups with 3 cell lipos etc

!

I got plenty of nice info from other threads but still have these questions ;

1. Any (significant to crawling) difference between the FXR and the FXR PRO?
2. Mamba Max +BEC or Tekin FXR without BEC?

Thanks !

Anthony.L · 05-28-2008, 10:29 AM

The only difference between the FXR and FXR Pro is a second FET board for high current applications. For crawling this isn't necessary, and most run the regular FXR.

I'm running a FXR with a 35t handwound on 3S lipo and lovin it!

TheHeadHunter · 05-28-2008, 10:35 AM

Quote:

Originally Posted by Anthony.L

The only difference between the FXR and FXR Pro is a second FET board for high current applications. For crawling this isn't necessary, and most run the regular FXR.

I'm running a FXR with a 35t handwound on 3S lipo and lovin it!

Thanks ! Any experience with CC stuff?

bustedcrawler · 05-28-2008, 10:50 AM

Mamba Max IMHO. However, I have no experince with the Tekin stuff. Just 2 rigs running 3S lipos and HH Pullers 10T and 7T. Add in a CC BEC and you are good to go!

Difuser · 05-28-2008, 11:35 AM

CC is what he just switched from

JohnRobHolmes · 05-28-2008, 11:36 AM

If you will run brushless in the future (or will steal the ESC for a basher) get the MM. For a brushed only crawler the FX-R is wonderfully small and light- and it has drag brakes like the MM.

Brainstain · 05-28-2008, 11:40 AM

I sure do love my Mamba. It has enough drag brake capability to stand my scaler on it's nose from full speed to stopped.

ElChupacabra · 05-28-2008, 11:42 AM

I ran a Sidewinder previously but have since gone to an FXr. I gotta say the Tekin gets my vote. Its tiny, handles the motor/battery combos we run, and is completely field programmable. I hated needing a laptop to program the castle stuff...

Grizzly4x4 · 05-28-2008, 11:49 AM

The Sidewinder in Guido is running the HH 10T Cobalt Puller on 14.4V like a dream. Absolutely no issues. Running a CC BEC as well.

The Mamba Maxx was running the HH 7T Cobalt Puller beautifully on 14.4V with no problems. Until I got it wet........

I really want to put an FXR in my comp rig, I was really impressed with them in Montana.

If you have no plans to go brushless or run any more than 11.1V then I'd say go with the Tekin.

TheHeadHunter · 05-28-2008, 01:18 PM

Thanks everyone !!!!!

and Grizz congratzzz on the nice spot at the Nats!!!!!!!!!

Looking forward to the next build !!!!!

looks like I will go Tekin or Sidewinder+CC BEC

Mic · 05-28-2008, 09:41 PM

I went with the CC Sidewinder I run 4s lipo, CC BEC with a 55t motor and would be hard pressed to cut back on the voltage and only run 3s. Maybe an FX-R with a 7t Puller and 3s would work as well as the 55t on 4s but I do not have any issues at all with the Sidewinder and 4s and it ROCKS!. I loved my Tekins that I had 20 years ago but I have not used one since then. It might be time to give them a try agian. I do need something for my Newage when it comes.

Anthony.L · 05-29-2008, 01:21 AM

Quote:

Originally Posted by TheHeadHunter

Thanks ! Any experience with CC stuff?

Yes, my previous ESC was the Mamba Max before switching to Tekin. The CC works very well and had no major issues. My crawler will be brushed for the foreseeable future so having a ESC that can do both doesn't interest me. The size of the Tekin is awesome. The FXR and CC BEC together are smaller then a Mamba Max alone.

I would go with the Sidewinder over the Mamba Max, save the money.

Definitely go with a CC BEC either way, I was able to brown out the FXR internal BEC. FYI, Tekin is testing a new version of the FXR with a MUCH larger internal BEC that will help this problem.

Natedog · 05-29-2008, 10:20 PM

Quote:

Originally Posted by Anthony.L

... Definitely go with a CC BEC either way, I was able to brown out the FXR internal BEC. FYI, Tekin is testing a new version of the FXR with a MUCH larger internal BEC that will help this problem.

While running what servo? I just ordered a Tekin FXR.

motorman1600 · 05-29-2008, 11:41 PM

I just purchased a FX-R and it is eaiser to program and has a much better drag brake for brushed motors. I did not like the size of the MM. The FX-R needs a BEC I hooked up a 3s lipo and the BEC in the FX-R started to glitch. After using a BEC from CC it works great. If you run 2s lipo it does not glitch at all.

Natedog · 05-30-2008, 01:34 AM

RUnning Integy 45T motor, GP1100 8-cell nimh....and Hi-Tec MG945 in a 2.2.....

chrisjlittle · 05-30-2008, 01:45 AM

JRH explained it it depth a while back, I just don't want to search for it. Heres my condensed version. The internal BEC in most ESC's is a linear voltage regulator, which is rated to burn off a spec'd amount of wattage as heat. So, if you up the input voltage, the amperage drops, making even the BEC in the FX-R pretty puny at high voltage. The castle BEC is a switching regulator, which cuts voltage by switching the power on and off repeatedly many times a second to provide a lower average voltage. Switching regulators are not subject to the same limitations as linear ones, and are significantly more efficient when dealing with large voltage drops. If you go higher than 7 cells or 2 cell lipo, get the castle BEC, and that stands for every ESC I can think of, other than the mamba monster.

ADDICT · 05-30-2008, 02:17 AM

Heres the winning combo.....

FX-R + HH Cobolt 7T(or 10T) Puller + 8T(on a R2 series tranny) + 11.1V''s = a bad ass, light weight set up. You can mount that esc anywhere... small a quarter, easy to solder, looks great and awsome price. Its doing great in comps all aroung the world. The drag brake is perfect for any rig. Im gonna say, that puller JRH has was one of my best investments i ever made on my rig and the fx-r just made it better.

Good Luck

stampedeproject · 06-08-2008, 11:19 AM

Tekin FX-R - you will be just stunned at how freaky powerful that little wafer thin quarter sized ESC is.

They are think'in at Tekin!

correcaminos · 09-26-2010, 07:58 PM

Quote:

Originally Posted by motorman1600

I just purchased a FX-R and it is eaiser to program and has a much better drag brake for brushed motors. I did not like the size of the MM. The FX-R needs a BEC I hooked up a 3s lipo and the BEC in the FX-R started to glitch. After using a BEC from CC it works great. If you run 2s lipo it does not glitch at all.

ok... so...

if i'm running the FXR - 2s , i dont need a bec? and if i running 3s i need a bec?

i have another cuestions...... can i run a 35T with 2s? or just 3s?

cuttyman · 12-28-2011, 04:44 AM

Quote:

Originally Posted by correcaminos

ok... so...

if i'm running the FXR - 2s , i dont need a bec? and if i running 3s i need a bec?

i have another cuestions...... can i run a 35T with 2s? or just 3s?

you can run the 35 on 2s wont be as fast as 3s tho!!!!!! not sure bout bec if you are running a high torque servo and have the cash may as well get a bec they are 20 to 30 bucks and will lighten the load on your esc as well as give you a more constant supply of power for steering

05-28-2008, 09:21 AM	#1
TheHeadHunter RCC Addict Join Date: Jan 2008 Location: www.rccrawler.com Posts: 1,113	Mamba Max , Tekin FXR or Tekin FXR PRO? I will be getting a good ESC soon or a couple of good ESC's (saw the thread about a Sidewinder in comparison to a Tekin FXR) I wont be going brushless but will be doing some Cobalt 7t/6t/10t motor setups with 3 cell lipos etc! I got plenty of nice info from other threads but still have these questions ; 1. Any (significant to crawling) difference between the FXR and the FXR PRO? 2. Mamba Max +BEC or Tekin FXR without BEC? Thanks !

05-28-2008, 11:49 AM	#9
Grizzly4x4 PapaGriz Yo Join Date: Apr 2004 Location: In the garage building the wife a crawler Posts: 13,137	The Sidewinder in Guido is running the HH 10T Cobalt Puller on 14.4V like a dream. Absolutely no issues. Running a CC BEC as well. The Mamba Maxx was running the HH 7T Cobalt Puller beautifully on 14.4V with no problems. Until I got it wet........ I really want to put an FXR in my comp rig, I was really impressed with them in Montana. If you have no plans to go brushless or run any more than 11.1V then I'd say go with the Tekin. Last edited by Grizzly4x4; 05-28-2008 at 11:52 AM.

05-29-2008, 11:41 PM	#14
motorman1600 Quarry Creeper Join Date: Apr 2008 Location: Garden Grove Posts: 499	Tekin Fx-r I just purchased a FX-R and it is eaiser to program and has a much better drag brake for brushed motors. I did not like the size of the MM. The FX-R needs a BEC I hooked up a 3s lipo and the BEC in the FX-R started to glitch. After using a BEC from CC it works great. If you run 2s lipo it does not glitch at all.

05-28-2008, 10:29 AM	#2
Anthony.L Newbie Join Date: Nov 2007 Location: Seattle, WA Posts: 46	The only difference between the FXR and FXR Pro is a second FET board for high current applications. For crawling this isn't necessary, and most run the regular FXR. I'm running a FXR with a 35t handwound on 3S lipo and lovin it!

05-28-2008, 10:50 AM	#4
bustedcrawler RCC Addict Join Date: Apr 2004 Location: 5280 Posts: 999	Mamba Max IMHO. However, I have no experince with the Tekin stuff. Just 2 rigs running 3S lipos and HH Pullers 10T and 7T. Add in a CC BEC and you are good to go!

05-28-2008, 11:35 AM	#5
Difuser RCC Addict Join Date: Oct 2007 Location: Auburn Posts: 1,007	CC is what he just switched from

05-28-2008, 11:36 AM	#6
JohnRobHolmes owner, Holmes Hobbies LLC Join Date: Nov 2004 Location: Volt up! Gear down! Posts: 20,290	If you will run brushless in the future (or will steal the ESC for a basher) get the MM. For a brushed only crawler the FX-R is wonderfully small and light- and it has drag brakes like the MM.

05-28-2008, 11:40 AM	#7
Brainstain Nope.. Join Date: Aug 2005 Location: Whiteland, Indiana Posts: 1,849	I sure do love my Mamba. It has enough drag brake capability to stand my scaler on it's nose from full speed to stopped.

05-28-2008, 11:42 AM	#8
ElChupacabra Rock Crawler Join Date: Aug 2007 Location: Philadelphia Posts: 797	I ran a Sidewinder previously but have since gone to an FXr. I gotta say the Tekin gets my vote. Its tiny, handles the motor/battery combos we run, and is completely field programmable. I hated needing a laptop to program the castle stuff...

05-28-2008, 01:18 PM	#10
TheHeadHunter RCC Addict Join Date: Jan 2008 Location: www.rccrawler.com Posts: 1,113	Thanks everyone !!!!! and Grizz congratzzz on the nice spot at the Nats!!!!!!!!! Looking forward to the next build !!!!! looks like I will go Tekin or Sidewinder+CC BEC

05-28-2008, 09:41 PM	#11
Mic Rock Crawler Join Date: Mar 2008 Location: Arizona Posts: 578	I went with the CC Sidewinder I run 4s lipo, CC BEC with a 55t motor and would be hard pressed to cut back on the voltage and only run 3s. Maybe an FX-R with a 7t Puller and 3s would work as well as the 55t on 4s but I do not have any issues at all with the Sidewinder and 4s and it ROCKS!. I loved my Tekins that I had 20 years ago but I have not used one since then. It might be time to give them a try agian. I do need something for my Newage when it comes.

05-30-2008, 01:34 AM	#15
Natedog I wanna be Dave Join Date: Jan 2006 Location: Corruptifornia Posts: 12,107	RUnning Integy 45T motor, GP1100 8-cell nimh....and Hi-Tec MG945 in a 2.2.....

05-30-2008, 01:45 AM	#16
chrisjlittle RCC Addict Join Date: Nov 2007 Location: BV Posts: 1,170	JRH explained it it depth a while back, I just don't want to search for it. Heres my condensed version. The internal BEC in most ESC's is a linear voltage regulator, which is rated to burn off a spec'd amount of wattage as heat. So, if you up the input voltage, the amperage drops, making even the BEC in the FX-R pretty puny at high voltage. The castle BEC is a switching regulator, which cuts voltage by switching the power on and off repeatedly many times a second to provide a lower average voltage. Switching regulators are not subject to the same limitations as linear ones, and are significantly more efficient when dealing with large voltage drops. If you go higher than 7 cells or 2 cell lipo, get the castle BEC, and that stands for every ESC I can think of, other than the mamba monster.

Sponsored Links

05-30-2008, 02:17 AM	#17
ADDICT RCC Addict Join Date: May 2008 Location: On the rocks Posts: 985	Heres the winning combo..... FX-R + HH Cobolt 7T(or 10T) Puller + 8T(on a R2 series tranny) + 11.1V''s = a bad ass, light weight set up. You can mount that esc anywhere... small a quarter, easy to solder, looks great and awsome price. Its doing great in comps all aroung the world. The drag brake is perfect for any rig. Im gonna say, that puller JRH has was one of my best investments i ever made on my rig and the fx-r just made it better. Good Luck

06-08-2008, 11:19 AM	#18
stampedeproject Rock Crawler Join Date: Sep 2007 Location: Omaha Posts: 565	Tekin FX-R - you will be just stunned at how freaky powerful that little wafer thin quarter sized ESC is. They are think'in at Tekin!

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