REVIEW : Brushless combo for CAR & BOAT
 

Hi to all,
recently I bought a brushless combo for my Team Losi Matt Francis 1 at rc-monster.com

I just want to congratulate that rc-monster is reliable, have good support and do fast shipping.

Speed control MGM Compro 80 amp (6to12 cells)
http://www.aubergearnold.qc.ca/downl.../olivier/2.jpg

Motor Feigao 8s (4400t/v)
http://www.aubergearnold.qc.ca/downl.../olivier/1.jpg

http://www.aubergearnold.qc.ca/downl.../olivier/3.jpg

My brushed setup was
LRP IPC Super Sport
Trinity Chameleon 2
pack 6cells 3000mah
22/86
http://www.aubergearnold.qc.ca/downl...ivier/mf_1.jpg
http://www.aubergearnold.qc.ca/downl...ivier/mf_2.jpg
http://www.aubergearnold.qc.ca/downl...ivier/mf_3.jpg

it gives (41.4km/h or ~26mph)
http://www.aubergearnold.qc.ca/downl...esse_brush.jpg

in BL
pack 6 cells 3000mah
16/86
(42.4km/h or ~27mph)
http://www.aubergearnold.qc.ca/downl...tesse_bl_1.jpg

pack 12 cells 3000mah
18/86
(50.3km/h or ~32mph)
http://www.aubergearnold.qc.ca/downl...tesse_bl_2.jpg

I like the sSmmMoooooTTHhh speed. Thats not like my mini-t : so abrupt. I just want to say that the speed that not soooo ast, I was thinking of a +6-10mph easily at 6cells. but the top speed is reached at the half distance of my brush setup. the acceleration is so better. its sure that im not geared like the brushed setup, I will try with 22/86 next time when the wheater will be better here. i am in hurry to try it in a boat like a Traxxas Blast or somethink same. I need something that have a motor plate not a thing that the motor is supported by a plate at the top. i need something that I can screw the motor to a plate. the ABC Typhoon or the Traxxas Blast is a good choice I think... If i can buy something used or new without electronics it will be better..

you have questions ? i have answers I think;)

How come you're going so slow with 12 cells? I think it was a typo - you meant 6 cells right?

on 12 cells that thing must go 50mph at least!

I think like you, it suppose to go faster than that(that's not a type error), maybe my GPS is not reliable or I don't take the good setup for the speed control, maybe a re-programming will help?

You GPS is right, you can trust it.. :)

I don't know what's wrong either..

Is the motor getting real hot on 12 cells?

It should be a freaking torpedo on 12 cells.. uncontrolable, like a mini-t with a mamba 8K on 3S lipoly ;)

on 6 and 12 cells the motor don't get soo hot, I think like 90ºF for the 6cells and maybe 130ºF for the 12cells. is not so hot.

yes I know it suppose to go soo fast, with my mini-t mamba 5400 and 3s LiPo I got something like 30-40mph easily but I don't check with my GPS but it gives the impression to.

What type of cells ? You just say 3000 mah. I bet some GPs would get better speeds.

thats not matched pack its leisure pack, not competition pack.
I got 4 for ~50$US
http://cgi.ebay.com/ws/eBayISAPI.dll...32424&tc=photo

i will surely switch to 3s LiPo pack sooner

I can tell you this;

Your setup won't be faster than the amount of power your packs can deliver..

This is the typical prove..

It's your batteries that are the limiting factor in your setup.

does the Feigao 6s or Lehner Basic 5300 will fix the prob ? the speed control I don't think it can handle the 6s (108 amps) and the speed control is 80... maybe the basic 5300?

do you think that a different program of the speed can help?

No, your batteries are crap.

That's the problem.

what do you mean by crap?
if I buy some GP3300 it will be a lot better?
something like this : http://cgi.ebay.com/ws/eBayISAPI.dll...966953447&rd=1
?

Yes,

You are using a highpower setup with batteries that cant deliver a descent 30A! Buy GP3300's pushed/matched, on 8 cells your truck will fly like it never did.. :)

You bought the cheapest batteries available, 12.5 dollar for 6 cells.

Its like putting a 50 cc two stroke in a Porsche..

Austin (maxamps.com) gives you a discount of 5 percent when you register on his website.

I think Mike can deliver you good batteries too.

ohhh ok...
and the LiPo pack like that http://www2.towerhobbies.com/cgi-bin...&I=LXJSJ2&P=ML
will be awesome at 64A continuous discharge?!!

You get the point!

Those are top notch lipoly packs at this moment.

Maybe you used 12 cells but put them in parallel instead of series. I don't mean to sound insulting, but I believe that with the two battery packs, you hooked up positive to positve and negative to negative. When you hook up 2 batteries to make a "12 cell pack", you're supposed to hook up the negative from one to the positive of the other so all the cells are end to end.

That's another option..

Did'nt crossed my mind..

I agree with Serum and Lipomaxx. The 12 cells were probably wired in parallel, so the only speed you gained is from the extra current capability of the dual packs. The batteries are a huge limiting factor as well. One good 7 or 8 cell pack will propel that thing to the mid 40s pretty easily. The Kokam Lipos are awesome as well, and would really turn it into a rocketship.

He also geared it 2 teeth taller - that alone would give that speed increase.

True. It is unlikely that the cells were wired in series either way.

no my pack was in series.
this is my wire that I use to be in series
http://www.aubergearnold.qc.ca/downl...livier/v_1.jpg
with my multimeter it give me 14.78v (note : the battery is was not charged)
http://www.aubergearnold.qc.ca/downl...livier/v_2.jpg
http://www.aubergearnold.qc.ca/downl...livier/v_3.jpg

if it was in parallel it would be 7.2v and 6000mah (same speed but more runtime)

now, i think I will wait at towerhobbies until the pack is in stock and I will order a 3s and a 2s...:mad:

You are planning on running it on 3S or 2S?

Just try a good 8 pack of GP3300's first! Don't know if you allready have got a proper lipoly charger?

yes I have a good LiPo charger
http://www.aubergearnold.qc.ca/downl...rgeur_lipo.jpg

I use it with my 3s 11.1v 1900mah for my mini-t and it run great!

I just have to take the jumper and put it on 3s 11.1v and
2500mah.

I will run it on a 3s AND a 2s. (not at the sametime, not in series, lol!)

I'd have to agree with Serum: Your batteries are crap. With 12 cells and geared 18/86, you should be going over 50 mph!

the 2s 7.4v 3200mah will going at which speed ?
because 2 3s is sooo expensive but I can buy 2 2s...

Just buy the GP3300's (build 8 or 10 packs from them) and it will fly.


On 2S lipoly, it won't be very fast.

Get get 1 3s lipo and then save your money, and get another one. A 3s3200 will go about 42 mph with 18/86 gearing. The 2s won't be any faster than 6 cell NiMH.

I bet the 2s LiPo would be faster than the 6 nimh cells he is currently using! you could even get two 2s LiPo packs and run them in parallel (6400 Mah) and be about the same weight as 6 nimh cells. Personally, I run the 3s pack or above, but I run bigger trucks!

whats it the max turns that the Feigao 8s can handle ?

Do you mean rpms? The Feigao motors are rated for 50000 rpms. Most motors can be pushed past the rated limits occasionally without issue, but I wouldn't continually run it beyond the limits. It will probably handle it, but better safe than sorry.

ok,
so the 3s LiPo for continually run will be the best (11.1v x 4436 = 49 239rpm) ?

It will run VERY well on a 3 cell LiPo!

I receive my 3s LiPo pack, THATS AWESOME
LOT OF TORQUE & SPEED
42.2mph
http://www.aubergearnold.qc.ca/downl...livier/v_5.jpg

Thx Mike and long life to BL!!

Very Nice! Plenty fast, if you ask me! More speed could be had with that set up for sure, but it will cut into your runtime. The funny thing is, that has less voltage (technincally) than your 12 cell setup and outperformed it easily! I am glad you are enjoying your setup.