I like the hacker c50 L can motors in 1/8 buggies and stuff with lighter wheels/tires. I tried the c50 xl motors in the lst and muggy then swapped to a 1521 of similar kv. The neu handles the larger heavier wheels/tires better. Less heat on the battery, esc and motor, with the same gearing. I do notice it is lightly less aggressive on acceleration, but I do run 50% punch control with both setups.

Stick with a 4 pole for the truggy.

so i really want to try one of these hackers now. would the c50 8xl be too much for a buggy or inferno conversion? would it be good for a truggy though? the other consideration is the c50 11L which is a bit smaller but is it enough for the buggy or would it get hot? which is the best all round motor of the 2? by the way, i only have tekno neus also. i have had both the round and square cans. right now i have 2 1515 tekno neu square canned 1y motors. one is in my truggy and one is in my buggy. great motors. but the reason i want a hacker so bad is becuase if the germans build a brushless motor anything like their cars i know it will kick ass.

You are right about the kicking ass part. The L-can is enough for the buggy.

Holy smokes
 

get this! so just when i was about to buy the c50 8xl from impaktrc for $240 i decided to check ebay and i found a c50 7xl 2250kv for $100 barely used and money back guranatee from a 100% feedback seller. i also bought from him a hacker b50 8xl and a lehner 2250-6 for another $300, both of them brand new. so for $400 i just got 3 german motors, 2 of them new and one slightly used. wow! cant beat that.

Great deal you found man.

Heres the vid of the RX8 vs a Novak HV. RX8 had the plettenberg on 4s A123, and the novak HV 4.5 was on 4s trakpower. Me having less kv, and less power still managed to squeeze by. The RX8 kicks some serious booty.

http://www.youtube.com/watch?v=SXVX4OGcxlA</EMBED>

I wouldn't say less power tho.... lol

whats the final conclusion is the RX8 esc or motor set better than the mamba monster? It seems the RX8 by spec is better than mamba monster, but motor runs hotter than than the 2200?

I haven't use the motor at all and recently sold to a fellow RCM member. The ESC is so smooth with the motors+gearing I use, that going sensored is pointless in my application. However if I would use the ESC in my 1/10 speed monkey's, than the sensored feature would come in play with the crazy rollouts.
I am very impressed with the RX8 ESC capabilities in my applications. Very easy to program. I did however had to get the Tekin Hotwire to be able to change the timing for the different motors I use.
A friend of mine is also building a Ofna GTP with an RX8, hooked up to a 1515 Tekno neu after seeing my setup in action.

thank you...I was thinking since the specs on the esc are better on the rx8 would this applicable for the savage flux truck?

I prefer the RX8 over the Monster for it's size, the smoothness and ease of programming.

The Tekin ESC is an animal. My GTP was clocked at 50mph within 100 feet thanks to its smooth power delivery.

Ah, thats weak!!

LOL good job!! Now let see some more hand pictures lol... and drag racing video!

LOL, ya that is weak compared to my 1/10 cars. I need to go to a bigger parkinglot to let the beast loose. Right now the Costco parkinglot seems like a good choice for the 300ft speedrun. Waiting for my 2 other homies to build up their GTP's+RX8 powered monsters for some good fun competition. BTW, those Ebay foam tires from suprasales are great.

http://i189.photobucket.com/albums/z...p/DSCF6409.jpg

Alright alright, wheres the hands??? lol...

Just kidding! Looks great! I'm still itching to do a 1/8 onroad!... one day...

I am currently running the Ofna GTP on 2s2p A123 and it's plenty fun. Pulls about 39A and less with a 6L C50 Hacker. Top speed is about 30mph, so not really a slug by any means. I'm surprised that even with that low of a voltage the RX8 works great with zero cogging.

what kind of mounts mosfett?

upppp!!!!

What do you mean? I think I saw someone asking the same thing and I posted something about it, but wasn't sure what the questions was really asking. he MOSFET they use are the leadless type SO8 MOSFET and it might be the OnSemi used in the R1/R1 Pro/RS/RS Pro, MM and MMM. Does that answer you question?

yes.

know exactly what it is (BSC079N10NS or BSC118N10), right?

Which of these two?

It should be this one: http://www.onsemi.com/pub/Collateral/NTMFS4833N.PDF. I'm not 100% sure if they are using a Infineon MOSFET, but I can be wrong. The part numbers you provided are not being used as the BSC079N10NS is a 100V MOSFET (Would make a nice 20S esc though) and the BSC118N10 is the same 100V, but less AMPs. Who knows they might be using a 40V MOSFET, but my best guess is the OnSemi one.

"snellemin" has opened. has done a photo of FET?
no one else has done a photo of FET?

He has, but the FETs were not shown. That MOSFET I mentioned and provided the datasheet is what most use. It's one of the best, but there's always new ones coming out. Giving the power level of the RX8, my best guess is that they use it or they are using a more powerful one.

you think the 210 Amper are continuous or peak?

thank's

It's what I like to say a continuous burst which you might get in a very hard acceleration. Maximum burst will depend on the gearing, weight and the way people drive, but I don't know what the maximum burst of the RX8 is. None of the current car ESCs can handle 100A or 200A continuous, but they can average around 20A or so (Maybe more, but those were the numbers I got from my set ups). That number is much lower with higher voltage, correct Kv motor and gearing.

thanks, you were very helpful

I read in another forum that has 30 MOSFET (10xphase)

real?

Here's another update.

I've been running the RX8 ESC on 4s2p A123 in the GTP geared 51/20 with the 4000kv hacker. Everything was okiedokie, but topspeed was not the same like the 6s1p A123 pack. So I ordered the 25T pinion from Mike and the GTP became an animal again...for like 2 minutes. I thought the RX8 smoked, but all was good and the motor plugs were all unsoldered. Soldered on 6.5 connectors instead and ESC kicked butt again. I need to datalog the sucker and see how many amps it's consuming.
Motor wires are 12awg, and battery input wires are 10awg.

http://i189.photobucket.com/albums/z...p/DSCF8147.jpg
http://i189.photobucket.com/albums/z...p/DSCF8145.jpg

Here's a snipped of the datalogger. I pull about 159Amps @ 8.68V right before I brake.
http://i189.photobucket.com/albums/z...6Lc5051-25.jpg

hi,

I've got a question regarding those extra power caps you have there. Where did you get them, and what are the specs?

In the past, I have always equipped my esc's with extra power caps. I used to have some plane-esc's (well, the breaks are crap), and I soldered some extra power caps on (approx. 3000uf).

So I "pimped" my sae-brushless esc (http://www.rc-monster.com/forum/show...&highlight=sae) with some extra caps. I am not quite sure, but I think it ran cooler afterwards. But finally, one day it burned. I 'm pretty sure it was due to the hard cogging after a jump, and not my fault, or caused by the extra caps (low esr).

I have got a replacement-esc, so I now wonder, if I could add some extra caps. I've asked mr. constructor (lutach has his chassis) about that, and he thinks, that some more caps - probably - also could cause damage, if they have the wrong capacaty or volts.

regarding the replacement sae-esc, I will post some news as soon as I have tested it. Probably they have improved the software (other users of the new one report very smooth throttle), at least the wires/cables have a better quality.

There are power caps available for yge or etti esc's, so it can't be wrong I think.

I just want to be sure, if adding caps prevents the esc from damage.

and yes, those hands are just amazing....:party:

thanks for any hint
florian

Wow, I don't remember what size caps I used. I'm thinking they were 3 1000uF 35V ones and a pair of tvs's. On my other RX8 I used 2 1800uF 35V caps and a pair of TVS's as well. I've seen the Etti's cap banks and I think that is the most economical way to go. I would go with the etti-e035-lv cap bank.

http://i189.photobucket.com/albums/z...n/DSCF6588.jpg

Thanks for your reply. But tell me, what's the story about that "electronic board", where the caps are soldered on? Is it against sparks?

I am thinking of using one of those:
http://s7b.directupload.net/images/100306/kgwcyme3.jpg

The ones in the back have been used as additional caps in the past. I am either taking the big fat one on the right, or the two 2200uf. I know it's better taking more small ones then one big power cap. I am using 5s Lipos in a truggy, with a delicious medusa 3680-1800.

So what do you think, using the caps without that "board" would cause problems?

Many thanks, it's hard to get solid information on that topic.

florian

That "board" is to clamp the voltage down to a certain value, so I don't go over the ESC Voltage limit during hard braking when running at max rated ESC voltage. You can just add caps with out the "board", but use good quality batteries when running at max ESC voltage. This will aid in the reduction of the Voltage spike you get during braking.

ok, thanks. If I understand that right, if I have eg. 36v caps and no "board", the spikes (up to 35) absorbed by the cap can hit the esc and damage the esc.

So adding two 25v 2200uf caps should be ok? I'm runing 5s lipos (esc max. 6s).