View Full Version : Newbie gearing question?
07-28-2011, 05:12 PM
New member here!
I picked up a new brushless e revo.It came with 2 -7 cell nmih batts.what gearing can i run without the risk of damaging the esc/motor?I would like a bit more top speed till i can afford some 4s lipos.Thanks
07-28-2011, 05:18 PM
Stock gearing is all you can use with nimhs- 18/65 I believe, do not use the optional spur ( 54 or 58t ) and do not use a larger pinion either until you get your lipos.
Once you get a nice matching pair or 2s lipos ( ~30-40c 5000mah or so ) you can safely gear up to around 24/65, though 20-22/65 may be better depending on how hard you drive and the terrain etc.
Behold, your new extended manual:
EREVO FAQ (http://robotwars.00server.com/erevofaq.html)
Lipo, LVC, Brushless & Battery charger/charging guides & purchasing links:
Refer to this to setup the Mamba Monster ( MMM ) esc for maximum performance:
CASTLE LINK GUIDE (http://robotwars.00server.com/newcastlelink.html)
Refer to this to find parts, upgrades, batts & chargers etc:
USEFUL LINKS (http://robotwars.00server.com/trucklinks.html)
And direct from CastleCreations ( the esc manufacturers ):
MMM FAQ (http://www.castlecreations.com/support/faq/faq-mamba_monster.html)
Driver's ED Manual (http://www.castlecreations.com/support/documents/drivers_ed_guide.pdf)
LED warning light meanings (http://www.rc-monster.com/forum/showthread.php?t=20020)
07-28-2011, 05:45 PM
Or get 3s batteries and have alot more fun.
07-28-2011, 06:11 PM
hey thankyou for all the info i'll have to read up on it.i read that when i switch to lipos i'll need to pick up a castle link to reprogram the esc?
07-28-2011, 06:23 PM
Yep, the castle link or field link makes adjusting the settings vastly easier compared to doing it via the radio- about $20-25 and well worth it.
Or get 3s batteries and have alot more fun.
And alot more broken driveline parts / destroyed truck depending on user experience / ability and terrain; learn to walk before you run... :)
07-28-2011, 06:30 PM
yes Castle link. AOD has a really good link on how to use it. Start with 2/2s then move up to 2/3s
Make sure the batt fit. Do some home work before buying batts.
A few of the batts to look at.... google is your friend can't give you links RULE #11
2S 8000 x 28C = 224,000 divide 1000 = 224 amps
3S 5200 x 40C = 208,000 divide 1000 = 208 amps
The more amps the better / minimun of 120 amps.
Higher the mAh the longer the runtime.
8000 mAh about 45 min & a 5000 mAh about 30 min.
Batts in series double the voltage:
2x 2s 20c 5000mah = 4s 20c 5000mah
Batts in parrallel double the mah capacity:
2x 2s 20c 5000mah = 2s 20c 10,000mah.
2s Hyperion 5000 mAh 45C Soft
2s SPC 2s 5200 40C
2s SPC 2s 6000 30C
2s SMC 6000 mAh 28c
2s SMC 8000 mAh 28C Soft Case Lipo
2s SMC 9000 mAh 28C Soft Case Lipo
2s team orion carbon 7000 35c
2s ******* ******** 6000mah 25-50c few layers of duct tape on the top of the pack for a snug fit.
2s Nosram Fat Cobra hardcase
2s HiCountryHobbies/Billowy Power 5200 mAh 50c
2s RC DUDE Power 5000 mah 35c RCDude.com
2S Sky Lipo 5000 mah 40C -- fit snugly
2s ******* 30c 5000 mAh soft - Extend Batt Door Out
2S ******* 5200 mAh 5.2 Hard Case - Trim Batt Door For Wires
2S ******* 5000 mAh 5.0 Hard Case - Trim Batt Door For Wires
2s ***** ********* 5000 mAh/30c/hardcase -- remove both “L” brackets, take “L” bracket that was at the back of compartment, move screw to closest hole to corner of bracket and attach to where front “L” bracket was located. Distance should be PERFECT, nice and snug!
3s Hyperion 5000 mAh 45C Soft
3s Max Amps -6000xls
3s Team Orion Carbon 4700 mAh 45C
3s Kypom K6 6000 mAh
3s RC DUDE Power 5000 mAh 35c snug 29mm tall
3s HiCountryHobbies/Billowy Power 5200 mAh/50c snug 28mm tall
3s ***** 5000 mAh 30c
3s *********x 5800 mAh 30c - enlarge hole on battery door
Mod's...remove retainers & back out or trim screws if they extend into battery compartment
3s SMC 5500 mAh 28c
3S SPC 5200 mAh 40C
3s ******* ******** 6.0 6000 mAh 25-50c
3s ******* 5000 mAh 30c soft - Minor Mod/Extend Battery Door Out
4s ******* 4000 mAh 30c - Minor Mod/Extend Battery Door Out (Same size as the ******* 3s 5000mah 30c soft)
07-28-2011, 06:52 PM
im interested in getting the new traxxas lipos& charger any release dates?I searched and had no luck.......
07-28-2011, 06:55 PM
Does my mmm esc have an internal cut off for lipos?Will i need to puchase a cut off separately?
Thankyou for the responses i appreciate the help.:D
07-28-2011, 07:09 PM
No one knows yet, 'soon'.
And read your manual & the links I posted above; it is the first thing you should do to understand how it works & saves time asking questions since you have the answers already. ;)
07-28-2011, 07:28 PM
im going to take your advice and start with 2- 2s lipos.After reading the caslt link guide states that the low voltage cut out should be set for 6v for 2s lipos is this correct?
07-28-2011, 07:57 PM
No- read it more carefully; with the old firmware ( v1.24 ) the auto-lipo setting of the LVC is 3.0v per cell which is considered too low, you should use the custom setting and set it for 3.2-3.4v per cell ideally ( higher setting wont shorten runtime by much really at all, experiment a little ). With the newer firmware versions ( v1.32 ) the auto lipo setting is 3.2v which is fine, just turn on the lvc option and set it to auto lipo.
Just bare in mind the advisory about firmware versions and throttle issues- if you try the latest firmware and you have the low-speed glitching, you'll know what to do :cool:
07-28-2011, 08:23 PM
Thanks a bunch man!
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