R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric On-Road

Reply
 
Thread Tools Search this Thread
Old 04-11-2010, 04:43 PM   #901
Tech Elite
 
Jochim_18's Avatar
 
Join Date: Mar 2005
Location: CALI
Posts: 2,364
Trader Rating: 10 (100%+)
Default

I won today on MOD class at our club race but MMP is not as smooth on MOD as on my 13.5T. Power delivery is not smooth as I want it to be their is slight stuttering and an instant burst in power being delivered to the motor it's pretty handfull driving the car and keeping my lap time consistent...

I have it on Sensored Only Mode with ZERO degree timing with Novak Ballistic 4.5T.

I tried running it on CHEAT MODE with 26 degree timing and it's a lot worst to drive the car is un-drivable due to too much power....
__________________
Localrcracing.com - Your premiere source of Radio controlled Racing in central California.

Visaliahobbies.com * SkyRC * casterracingparts.com
Jochim_18 is offline   Reply With Quote
Old 04-11-2010, 06:34 PM   #902
Tech Champion
 
geeunit1014's Avatar
 
Join Date: Sep 2005
Location: The dirty burnie
Posts: 5,405
Trader Rating: 12 (100%+)
Default

Quote:
Originally Posted by Jochim_18 View Post
I won today on MOD class at our club race but MMP is not as smooth on MOD as on my 13.5T. Power delivery is not smooth as I want it to be their is slight stuttering and an instant burst in power being delivered to the motor it's pretty handfull driving the car and keeping my lap time consistent...

I have it on Sensored Only Mode with ZERO degree timing with Novak Ballistic 4.5T.

I tried running it on CHEAT MODE with 26 degree timing and it's a lot worst to drive the car is un-drivable due to too much power....

Turn your start power up (if it is not already), and try 10-20% punch control. The start power should help it get rolling better, and the punch control should smooth out the bottom end a bit
__________________
Mike Gee

Awesomatix USA/Pyscho Cells Racing/LRP/Sweep Racing/RSD/Middle River Hobbies/Johns Mobile Raceway/TQ Wire/Avid
geeunit1014 is offline   Reply With Quote
Old 04-11-2010, 07:19 PM   #903
Tech Master
 
Pablo Diablo's Avatar
 
Join Date: Dec 2008
Location: Sydney Australia
Posts: 1,003
Trader Rating: 2 (100%+)
Send a message via Skype™ to Pablo Diablo
Default

Quote:
Originally Posted by Jochim_18 View Post
I won today on MOD class at our club race but MMP is not as smooth on MOD as on my 13.5T. Power delivery is not smooth as I want it to be their is slight stuttering and an instant burst in power being delivered to the motor it's pretty handfull driving the car and keeping my lap time consistent...

I have it on Sensored Only Mode with ZERO degree timing with Novak Ballistic 4.5T.

I tried running it on CHEAT MODE with 26 degree timing and it's a lot worst to drive the car is un-drivable due to too much power....
I too tried different setups with a mod motor. As already said, Smartsense seems very slow. It seems a common problem with these new rpm based timing advance ESC's is drive-ability. When getting back on the throttle after easing off or coasting, the car gets very unsettled. In the end I found no match to the smoothness of my Team Wave RB50. It is the smoothest ESC I have ever driven and its turbo gives great top end.

Its a shame that an ESC that has such a high power rating, can't be fast and smooth in Mod. It does seem a match for Tekin in Spec though.
__________________
Paul H

Losi Type R | Xray T3 | CRC Gen XL | CRC Gen X 10 ME(Messiah Edition) | Black Diamond

www.FlyingFoxRC.com | Advanced Electronics | Team CRC | Factory Messiah
Pablo Diablo is offline   Reply With Quote
Old 04-11-2010, 08:03 PM   #904
Tech Elite
 
Jochim_18's Avatar
 
Join Date: Mar 2005
Location: CALI
Posts: 2,364
Trader Rating: 10 (100%+)
Default

I got the punch Control at 25% and even tried as high as 40% but I loose my bottom end big time.... Well I guess this will not be my MOD ESC too much power... With Smart sense mode man it was slow...

I did better with my GTB last race way a lot smoother I can ram on the throttle without breaking the rear end of the car loose...

Quote:
Originally Posted by geeunit1014 View Post
Turn your start power up (if it is not already), and try 10-20% punch control. The start power should help it get rolling better, and the punch control should smooth out the bottom end a bit
__________________
Localrcracing.com - Your premiere source of Radio controlled Racing in central California.

Visaliahobbies.com * SkyRC * casterracingparts.com
Jochim_18 is offline   Reply With Quote
Old 04-12-2010, 10:41 AM   #905
Tech Adept
 
Join Date: Aug 2009
Posts: 226
Default

Quote:
Originally Posted by Pablo Diablo View Post
I too tried different setups with a mod motor. As already said, Smartsense seems very slow. It seems a common problem with these new rpm based timing advance ESC's is drive-ability. When getting back on the throttle after easing off or coasting, the car gets very unsettled. In the end I found no match to the smoothness of my Team Wave RB50. It is the smoothest ESC I have ever driven and its turbo gives great top end.

Its a shame that an ESC that has such a high power rating, can't be fast and smooth in Mod. It does seem a match for Tekin in Spec though.
I would have to agree with you Pablo. Even in 10.5, I cannot get the car smooth on the infield with a lot of timing in cheat mode, as the esc has a lump when the timing starts initially at low throttle. To prove the point, when I rev the car gently upto speed I can hear the jump in revs at low speed, which is in turn pushing the car wide, even at 30% throttle.

I've been experimenting for a while, trying to get the car fast down the straight on an indoor track, but have the infield drivability, and I just haven't found it still. No disrespect to Castle Creations though, as i'm sure they'll have a better firmware update in future. I'm also hoping the high speed brakes are more responsive in the future, as theres a definate lag in the brakes.

I've been used to an LRP SPX which was so smooth on the infield, with its gentle timing increase through the revrange. I have tried to cure the problem by trying unusually long rev ranges with the Mamba, but its still harsh. I can get the esc to run smoother, but at the expense of turning the timing right down. The pity is, the thing is an absolute monster in power, but I just cannot use it.

My next experiment will be running at a much Lower FDR, as it will give the car a much wider powerband. I'm using a Novak 10.5ss (full motor timing also) at 8.50 and i'm sure the added fact that the sharp power band is not helping the response at low speed. I'm basically running the car 2 feet wider everywhere, which is dropping me from Mid A finals to Mid Bs, even with the banzai straightline speed. (half a second lost a lap approx.) I've also spotted that advancing the motor from neutral to full caused the timing surge from the esc to be grossly exaggerated, so i've put the motor back to stock timing. Hopefully, I can retain the straightline speed and regain driveability in the infield.
maxg123456 is offline   Reply With Quote
Old 04-12-2010, 11:43 AM   #906
Tech Regular
 
whoopass's Avatar
 
Join Date: Dec 2004
Posts: 295
Default

maxg i think you have hit the nail on the head with your comments on the mmp. its a bit of an animal and castle need to work a little on the driveability as they seem to have great power and punch. not raced mine in 13.5 at my local track aldershot yet so cannot really compare laptimes with GM120's which seem the ESC of choice in the UK at the moment. as the Tekin RS is out of stock everywhere and nearly double the price of the MMP!
whoopass is offline   Reply With Quote
Old 04-13-2010, 02:08 AM   #907
Tech Adept
 
Join Date: Oct 2006
Posts: 230
Default

What kind of switch are people replacing theres with ?
MoonTrap is offline   Reply With Quote
Old 04-13-2010, 05:04 AM   #908
Tech Master
 
Pablo Diablo's Avatar
 
Join Date: Dec 2008
Location: Sydney Australia
Posts: 1,003
Trader Rating: 2 (100%+)
Send a message via Skype™ to Pablo Diablo
Default

Quote:
Originally Posted by maxg123456 View Post
I would have to agree with you Pablo. Even in 10.5, I cannot get the car smooth on the infield with a lot of timing in cheat mode, as the esc has a lump when the timing starts initially at low throttle. To prove the point, when I rev the car gently upto speed I can hear the jump in revs at low speed, which is in turn pushing the car wide, even at 30% throttle.

I've been experimenting for a while, trying to get the car fast down the straight on an indoor track, but have the infield drivability, and I just haven't found it still. No disrespect to Castle Creations though, as i'm sure they'll have a better firmware update in future. I'm also hoping the high speed brakes are more responsive in the future, as theres a definate lag in the brakes.

I've been used to an LRP SPX which was so smooth on the infield, with its gentle timing increase through the revrange. I have tried to cure the problem by trying unusually long rev ranges with the Mamba, but its still harsh. I can get the esc to run smoother, but at the expense of turning the timing right down. The pity is, the thing is an absolute monster in power, but I just cannot use it.

My next experiment will be running at a much Lower FDR, as it will give the car a much wider powerband. I'm using a Novak 10.5ss (full motor timing also) at 8.50 and i'm sure the added fact that the sharp power band is not helping the response at low speed. I'm basically running the car 2 feet wider everywhere, which is dropping me from Mid A finals to Mid Bs, even with the banzai straightline speed. (half a second lost a lap approx.) I've also spotted that advancing the motor from neutral to full caused the timing surge from the esc to be grossly exaggerated, so i've put the motor back to stock timing. Hopefully, I can retain the straightline speed and regain driveability in the infield.
Quote:
Originally Posted by whoopass View Post
maxg i think you have hit the nail on the head with your comments on the mmp. its a bit of an animal and castle need to work a little on the driveability as they seem to have great power and punch. not raced mine in 13.5 at my local track aldershot yet so cannot really compare laptimes with GM120's which seem the ESC of choice in the UK at the moment. as the Tekin RS is out of stock everywhere and nearly double the price of the MMP!
Its not just the MMP having these problems. The most popular spec ESC is also sacrificing some driveability to get the power it has.
__________________
Paul H

Losi Type R | Xray T3 | CRC Gen XL | CRC Gen X 10 ME(Messiah Edition) | Black Diamond

www.FlyingFoxRC.com | Advanced Electronics | Team CRC | Factory Messiah
Pablo Diablo is offline   Reply With Quote
Old 04-13-2010, 07:30 AM   #909
Tech Fanatic
 
macdude's Avatar
 
Join Date: Feb 2010
Posts: 915
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by MoonTrap View Post
What kind of switch are people replacing theres with ?
I have taken to soldering across the terminals on the board. Really no need for a switch. The only car that still has the switch is the one in my 1/8 scale buggy. But both my 1/10 scale buggy and my touring car have no switch. I also shortened radio lead as castle give you like 8 inches. Way too much for a touring car. Now if the thing just came with solder posts for the battery and motor it would be great.

To all the people running this thing in mod and not liking the power control, have you played with the throttle curves at all. I know running my B44 in open mod it took me quite a while to figure out a good throttle curve that gave me plenty of power but would not just break the tires loose at the drop of a hat.
The nice part is you can change the curve and then save it. So if you get a curve that works really well in one condition, you can recall it with relative ease through the software.
__________________
---------------
KO Eurus / Orca / MMP / XB2 / 22-4 /
macdude is offline   Reply With Quote
Old 04-13-2010, 07:50 AM   #910
Tech Adept
 
Join Date: Oct 2006
Posts: 230
Default

Quote:
Originally Posted by Pablo Diablo View Post
Its not just the MMP having these problems. The most popular spec ESC is also sacrificing some driveability to get the power it has.
I, and many others in my area, are using these speedo's from mod to 17.5 onroad TC, and find them to be very smooth once you play with the throttle curve. The curve is your best friend, you can get this speedo to be aggressive or as smooth as you want.
MoonTrap is offline   Reply With Quote
Old 04-13-2010, 07:56 AM   #911
Tech Elite
 
Jochim_18's Avatar
 
Join Date: Mar 2005
Location: CALI
Posts: 2,364
Trader Rating: 10 (100%+)
Default

I'll keep on my SPEC Car... I just purchase an LRP SXX TC for Mod class...
__________________
Localrcracing.com - Your premiere source of Radio controlled Racing in central California.

Visaliahobbies.com * SkyRC * casterracingparts.com
Jochim_18 is offline   Reply With Quote
Old 04-13-2010, 08:52 AM   #912
Tech Adept
 
Join Date: Aug 2009
Posts: 226
Default

Quote:
Originally Posted by MoonTrap View Post
I, and many others in my area, are using these speedo's from mod to 17.5 onroad TC, and find them to be very smooth once you play with the throttle curve. The curve is your best friend, you can get this speedo to be aggressive or as smooth as you want.
If you want to get the max out of the Mamba on the straights at the moment, you can use the throttle curve to loose the initial aggression, however it will simply surge the timing in a bit later on in the throttle. It doesn't really cure the problem. In fact, it lags the throttle. If I turn down the timing on the motor, the timing surge is much better, but I loose a lot of the top speed with my Novak 10.5ss.

I will give it another go this week with a lower FDR to around 6.15, instead of 8.50, to try and calm down the huge acceleration from low to mid throttle. This thing has tons of potencial, as its got outright torque and top speed, but has a surge in power just after it pulls away. I can understand why theres a lot of people raving about the punch this thing has.

I can imagine an X12 with its lot of built in power working well together with this Mamba, with the motor timing retarded, as the timing start range will be much more progressive and have less of a surge. I'm thinking the Novak is not the best choice of motor to run with this esc, as the Novak needs a lot of timing on the motor to get it to run fast down the straight, and in turn ramps up the timing very agressively in combo with esc timing.
maxg123456 is offline   Reply With Quote
Old 04-13-2010, 09:42 AM   #913
Tech Elite
 
Jochim_18's Avatar
 
Join Date: Mar 2005
Location: CALI
Posts: 2,364
Trader Rating: 10 (100%+)
Default

MMP with higher turn motor 13.5 or 17.5 this ESC is smooth but with the power of modified motor is putting out together with MMP is un-drivable.

What maxg123456 is stating the power surge when the timing kicks-in it will
un-settles the car big time and I never over shoot every freeking corner that much since last race using a MMP.
__________________
Localrcracing.com - Your premiere source of Radio controlled Racing in central California.

Visaliahobbies.com * SkyRC * casterracingparts.com
Jochim_18 is offline   Reply With Quote
Old 04-14-2010, 12:49 PM   #914
PDM
Tech Adept
 
Join Date: Sep 2007
Posts: 184
Default

Quote:
Originally Posted by Jochim_18 View Post
I tried running it on CHEAT MODE with 26 degree timing and it's a lot worst to drive the car is un-drivable due to too much power....
Jochim is it possible that you have the RPM where the CHEAT mode engage the timing in the infield zone of the track where you need more control?

It happened to me. I changed the RPM and it was ok. I was experiencing that with a small touch in the throtle the car was going out the curve because to much power aplied to the wheels.

Can move the engage RPM to an ealier or later stage.
PDM is offline   Reply With Quote
Old 04-14-2010, 10:29 PM   #915
Tech Elite
 
Jochim_18's Avatar
 
Join Date: Mar 2005
Location: CALI
Posts: 2,364
Trader Rating: 10 (100%+)
Default

I got the CHEAT MODE disabled so RPM is disabled too... I tried playing with the RPM with very little timing but I just don't like the way the throttle is applied on MODIFIED MOTOR... I'm pretty smooth on the throttle but this ESC is just way to aggressive for mod..

I have been driving mod for years but never had an ESC this aggressive.
__________________
Localrcracing.com - Your premiere source of Radio controlled Racing in central California.

Visaliahobbies.com * SkyRC * casterracingparts.com
Jochim_18 is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Tekin RX8 1/8 Scale Brushless ESC Thread sharkman Electric Off-Road 18797 12-21-2016 06:07 PM
Mamba Max Pro BlueWalker Electric Off-Road 3283 06-20-2016 11:51 AM
Tekin Redline RS Sensored ESC and motors, opinions for offroad? Cain Electric Off-Road 4230 06-07-2015 04:38 PM
the Chopping Block-Crawler Wheels. ESC/Motor Combos-Baja stuff Timmahh R/C Items: For Sale/Trade 9 05-24-2009 12:33 AM
Compatability of brushless ESC's and motors between makes Iceracer Electric On-Road 16 03-21-2007 08:00 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 02:26 AM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net

SEO by vBSEO 3.5.0