Brushless clod advice

william g

william g

Retired
Moderator
rc_racer57 said:
what about making a dual sensor esc, or going sensorless like a mamba system?
Click to expand...
even a ''sensorless'' brushless esc senses rotor position by the electrical feedback. The size of a dual everything ESC would be a very large brick and more prone to heat than 2 seperate ESC's. When you look at the size of 2 ESC's it's easier to fit them that way than if they were melded side-x-side into 1 giant brick.
 
MonsterBrit

MonsterBrit

Well-Known Member
A few things to add here from my brief Brushless Clod experience.

5700kV motors on stock 13T pinions with 2S LiPo are majorly fast. I don't recommend them for bashing unless you have a strong clod (not plastic axle tubed) and a BIG flat area to play in. If you are racing then fair enough you need that kind of speed.

I used a 5000mAh 50C 2S2P Turnigy Hardcase LiPo pack on my Clod and it had oooodles of power. I think the rig was probably drawing 100-120Amps max and the packs will take up to 200A burst current, so they had pnelty of room to spare. The 10 mins I did run the Clod for I got the motors hot and the ESCs warm but the battery was stone cold. If you go for one big battery like this you will save ton of weight and reduce your battery mounting woes a lot. The Turnigy hardcase packs I bought were not that expensive either.

As far as sensored stuff goes I don't really deem it necessary for high-speed rigs. If you were crawling (dirty word, I know ^_^) or doing precision stuff with tight turns or something then okay. but for Clod Racing, and certainly bashing, no I'd say not worth it.

All just my experience. As ever, your mileage may vary.
 
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oxide80

Well-Known Member
Im running the same set up in my Clod, Its just a basher, no one races MT's here anymore Its all buggies and sc. I added some chep 40mm cooling fans from radio shack wired to a 9 volt battery for the ECS's and a finned heat sink to the rear motor. Every think stays nice and cool
 
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Clint B.

Well-Known Member
hey guys new to the Moa scene , been running bl for 3 years in my other trucks. I think clods can benift from sensored motors. Its not all about the low speed cogging that makes me like them. The power feel more linear and smooth compared the sensorless systems i had. ive used both in 10th scale trucks, the sensorless seems like a light switch to me its was either on and explosive power or off. Brakes also felt smoother with sensored
A down side is there arent many systems that can reverse and the slightly higher cost . Castles MMP is what i use and it has a feature i really like ( havent used it in the clod yet) it has a cheat mode. To explain it easy its basiclaly like a turbo boost for what ever rpm range you choose. It comes a cost of motor heat and more draw from batts. In monster jam style this means a really nice way to tune up to get a little more top end if ya need it , or even more low or mid range power if you have a short run up on a jump.
As far as motors go i have used my 10.5 (3800kv) lrp's already . they worked great for a smaller sized track but down the straits everyone had me beat. Did pretty good first time out with the truck . To keep up with Stangnomore, Miratlhed, and everyone else .:tong I picked up a pair of remanufactured novak 7.5 (5800kv) motors from teamnovak.com This was actually the cheapest name brand motors i could find. These are some great motors i have an older novak 7.5 been beating the tar out of it for 3 years it still runs great. Will get to test out the novaks next weekend at the races and post more feedback
 
william g

william g

Retired
Moderator
^ I didn't have any luck with a new lrp sensored motor and a mmp, (mamba max pro) but it did work excellent and still does with novak motors.

With the LRP it worked better with the sensor cable unplugged. I used a castle link and triple checked all settings but no go. Plugged in a novak motor and works fine. I actually have 2 mmp's running novak motors. 1 in my jammin scrt10 the other in Project_X
 
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Clint B.

Well-Known Member
william g said:
^ I didn't have any luck with a new lrp sensored motor and a mmp,
Click to expand...
oh really was that the x12? was the timing advanced on the can i noticed the lrp 7.5 i have is adj. my 10.5 are the x11 vector stock spec with just one mark on the can . they worked great
....oh yea... too funny one of my mmp is on loan from my hyper 10sc
 
MonsterBrit

MonsterBrit

Well-Known Member
Well I'd say either/or on the ESCs. I have both and they are good ESCs and easy to program.

Sidewinders are more expensive and programming really needs a PC and CastleLink to work well (more cost). The price is worth it for the after-sales service you get from Castle, though. It's worth checking in Europe if you can find a HPI Flux Motiv cheaper than the Sidewinder. It's the same ESC with a HPI badge on. Because most companies have to import Sidewinders into the EU they can be more expensive. HPI have EU distribution channels which slashes the cost of the parts. Also on Sidewinders the PC link up makes it really easy to atch the settings between the two ESCs - just set and save to a file on one and load the file onto the other.

EZRun ESCs are exactly that, easy to set up and easy to program. They need little more soldering than Castles as they don't come with plugs and on a Clod rig you often need long wires. for the price they are on eBay or now from some model suppliers they are very good value for the item you get.

Motor-wise it might be worth looking at Novak, their motors are generally pretty good too. I'd say anything in the 4000-4600kV region will be good for 2S LiPo, maybe 3200-3800kv for 3S LiPo.
 
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scottyK

scottyK

Well-Known Member
Yes, you need to get a y-harness. I think I paid 5 bucks for mine. Make sure its 2 female and 1 male. The guy at the local hobby shop almost gave me the wrong one. :bang
 
MonsterBrit

MonsterBrit

Well-Known Member
If your Transmitter is 2-channel you need a Y-harness to split the throttle channel 2-ways

If it's a 3-channel (and you have a 3-ch receiver) with channel blending you can use the 3rd channel along-side the throttle and blend the third channel in at 100% throttle / 100% brake. That will simply makes both ESCs run the same. Be sure to turn off the push-button 2P function of you do that, too.

Be sure to remove the middle wire from the plug on the 3rd channel in either case or you might fry your receiver, depending on how the receiver is wired.

Also, be sure your handset's brake trim is set to 100% or your throttle channel ESC won't sync up. Took me awhile to work that one out! :bang
 
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Clint B.

Well-Known Member
So i have a ripper chassis tried to put some vxl motors in it the other day. Is there a trick to getting these to fit? I didnt have to time move my shocks but it didnt look like would fit even if i did. Might have to try some of them cheap motors if these dont work
 
K

kaiser

Well-Known Member
great thread.

i recently finished my alloy cpe terminator and am ready to go brushless.

i have had so much good luck with hobbywing (i race 2wd mod with xerun 60amp esc's) that i have to try running dual ezruns. i already have one esc so all i need is one combo and one extra motor.

clint, those vxl motors are unusually long for 540's, longet then most 550's. i don't know if you'll get them to fit.
 
joe

joe

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anyone tried dual sidewinder sct escs with the 3800kv motors?
i wonder what the differance is from a standard sidewinder.
 
Budhatrain

Budhatrain

Moderator
Moderator
I'm about too! Talked to support at Castle... says there is improved power over the older generation sidewinder esc (I don't know about this but whatev) and the motors are the key for me. With the "4 Pole" motor your supposed to get better torque and cleaner run.

I am a little concerned about the lower kv for top end speed but I want more torque because of the tires I am gonna use (rc4wd mudslingers for clod). I was able to pick up adjustable motor mounts so I am hoping I can gain more wheel speed by adjusting the pinion.

You can pick them up on ebay now for $88 + shipping. My lhs is gonna do $90 + tax. I was looking at the ezrun systems and this is really only a few $ over that so I am gonna go this route. The motors alone should be worth the investment. Plus I like dealing with Castle and their support.
 
joe

joe

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based on the kv rating, i think those motors could be perfect.
i hope they work out, because i was eyeing them for my clod.
:tmb
 
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