How much weighs your truggy brushless ?
 

Hello has all
I find that my truggy brushless is heavy, how much weighs your?
thanks
bye

Bonjour! Welcome to the forums! I haven't weighed mine yet, but mine's pretty light. What truggy do you have, and what's your brushless system? Any photos?

my truggy is a hellfire witch warrior 9920 + feigao 8XL + 16 intellect 3800
It is almost finished
thanks

i would guess 4.5 kg?

no 5.2kg :002:

I have a Losi Muggy that I converted with a MM/Feigao 7XL. With a 4S2P 6Ah pack, it weighs around 13lbs. It's pretty heavy, but you wouldn't know it watching it run. It wheelies and jumps like an animal.

But what kind of animal? Some animals don't move fast or jump far. ;)

No, while a hippo might look too big, it does a good 30mph on a speedrun.. Don't know how it jumps though.. (i guess it's the landing that's the killer)

Piere;

Considered going lipo?

What tires/wheels are you using?

I would think that is lands just fine, team losi does alot of homework before releasing their products and that is close to stock weight with a nitro engine in it.

my hellfire is full origin
You do not think that with the 8XL it will have not many speed?

o.k. my Outrunner Hf iss org.4,4 KG Heavy ! By using Lipo RC Battery I will earn 100 Gramm´s less ! The 8 s /123 Li/FE Zells are only 600 Gramm´s light !
I would like to place two 4800er4s Packs into a 8 S but in the org. Hellfire there is not enough Space to Place them on a good Posizion ! I want to build a komplet Chassis, with is 3 CM longer and the Big lipos will fit in !

best Regards Stefan

If I was to say what sort of animal my Muggy is, I would have to say that it's a big FAT cat. It is fast, jumps well, lands well, and is pretty fast. It is faster than any nitro truggy I've seen.

It is heavy, but there is also a lot I can do to shed weight. As the opporunities arise, I will be adding carbon fiber and getting rid of the 40 series wheels/tires that also add a lot of weight. I do, however, have to say that the stock tires provide good traction and are wearing well on concrete.

I would not worry about the weight until you start to race I am sure it is balaced very well

my car :
http://img103.imageshack.us/img103/8554/img3144xz0.jpg
http://img111.imageshack.us/img111/4517/img3148xg8.jpg
http://img265.imageshack.us/img265/5002/img3150at2.jpg
http://img265.imageshack.us/img265/5002/img3150at2.jpg
http://img265.imageshack.us/img265/3727/img3151jj9.jpg
what do you think about it ?

Looks good Piere; but i have got a tip for you;

use a 46t kyosho spur, that way you can flip the differential; that long pinion is a killer for your motorshaft! if you can't do the 46t (due to gearing limitations) make an extra slot in the chassis.

I would try to make the wires on the controller a bit shorter.

I'm a little concerned about the motor... does the mount flex at all? Try to secure the rear of the motor also so it can't move.

Straps for the batteries?

Loooking good.

BTW, my truggy weighs about 5200g with 12000mah 4s lipos (+1000g battery)

i bet you can run it day and night before it gets empty Glass!

I don't think that battery has ever been run down more than about 70% :)

I'm thinking about builing a 5S2P or 4S2P 5K packs, i like the long runtimes.. Still debating over 4 or 5S.. the packs that i found are 431 vs 533 per pack..

Thank you very much
but what is that teeth will be same ?
do you have pictures about your cars please ?
i want lipo 4S but I think that it will not be rather powerful
what do you think ?
thanks bye

4S compared to 16 cells, no, thats not too powerfull. 5S would be closer.

ok
my problem :
i ve got a ultramat 10 and it charged just 2 , 3 , 4 S
is it possible to do 2 pack one 3S one 2S ?
(sorry for my English i am just 15 :002: )

Yes... you can have separate 2s and 3s packs but that means you have to charge two times.

You will be much better with a 5s charger.. or you can buy another charger like yours so you can charge both at the same time.

I have a few pic of my truck... in this thread http://www.rc-monster.com/forum/showthread.php?t=5572 check post#14

but I need to get some new ones... maybe I can do that tonight.

Pierre, as long as we can understand your point, there's no reason why you should apologize for your weak English. Not that MY English is strong..:)

A good tip to get the power of the sixteen cells with only 4s lipos is to push your wallet up a bit and get yourself a pair of TrakPower's 4900mah 2s1p packs. They do produce monsterous raw power.
I even doubt your current sub-c cells are of the highenders.
A very good sub-c pack would cost over $100 sometimes. I'd rather spend it on a highend lipo, instead.
Get the TrakPower lipos!

+1 :027:

ok thank you
You think that my feigao 8XL and my warrior 9920 accepts 6S without any problems?
what do you think about it :
http://www.rc-monster.com/proddetail...2S_3700&cat=18
+
http://www.rc-monster.com/proddetail...2S_3700&cat=18
bye

Yeah, but I guess the motor will eventually fail. At 25.2 volts, the 8XL will become quite hot.

Believe me, get those TrakPowers...they'll make ya happy.

I would also be worried about the controller, 6S is alot of juice. Your truck with an 8XL and 4S lipo will be plenty for you. I have a LSP-R with an 8Xl, MM, heatsink, mount, 2 trakpower 4900, and it weighs right at 4.7kg, a little heavier than a stock nitro LSP, probably due to the aluminum arms. Geared conservatively it does 40 easily. LIPO batteries offer the best acceleration of ANY power source, get some LIPOS!:018:

@Pierre:
the thing with pinion was already mentioned here

another important thing:
your wires are too long

i mean the wires between motor and controller (also that is not that big of a problem)

AND the wires of batts to motor
(batts are side-by-side AND long wires)

--> in worst case it can destroy your controller !
so: try to make wires shorter !

ok thanks
The 7XL is it no more suited for a truggy?
Think you the 5S would go?
Thank you has all

pierre, no need for 5s lipo, just run 2 trakpowers for 4s and keep the bk speedo and 8xl. it will be plenty to handle. it will then have 1400 CONTINU watts avaible. even loads more peak horse power.

The warrior 9920 accepts 4S maxx ?

it goes with 5s aswell, but that's overkill imho.
but then again i'm not too good with high HP.
i'd stick to 4s lipo. fast enuff.

OK but 16 cells = 19.2V
and lipo 4S = 14.8
There is a big difference
no ?

The 9920 is actually rated for 6S LiPo, but I fried a 9920 and 7020 on 6S, so I would'nt really recommend it. The 8XL on 5S would be nice combo.

ok thanks
do you have a video about 8XL with 4S and 5S ?
please

Pierre,

As I stated before, my Muggy is a good 13lbs. (5.9kg), with an 8000mAh 5S battery packs. I've never had a truck before, and am surprised that mine is so much heavier than other true truggies. Anyway, I run an 8XL on 5S and it is almost too much power. Any sudden application of throttle results in a wheelie. I'm going to go to a 9XL for 5S, which should be the same performance as a 7XL on 4S, but will run cooler (less current draw) and have more runtime.

I think I'm going to find myself a real truggy and get rid of the Muggy. I don't like the fact that my truck is two pounds heavier than any other truggy without any advantages.

get a 8ight-T.

Nah, I'm thinking either MBX5T or X-Ray.

My 8t weighs a little under 9.5 pounds RTR with a 5k maxamps 4s Lipo packs. I just finished it up 2am Sunday morniong for a day of racing(had fun, but learned a few lessons as well). :)

The good news is that I put a good testing on a 16 tooth hardened pinion(used 8's stock spur) and the truck and conversion held up fantastic. I lost my pinion set screw in the main, though(the metal pinion on a metal spur has a bit more vibration than plastic/etal and I hadn't loctited the set screw). The pinion looks perfectly fine after a day of racing, too (besides the normal wear of the black oxide coating). I plan to offer 14t, 16t and 20t hardened pinions in the store in a week or so(once I get the gears cut and sent to heat treat for hardening and oxide). I will add more depth to the hardened gear line as well, but the 14, 16 1nd 20 will be the start point.

I will bust out a few of the 8t kits this week - here are a few pictures of my truck(kit will allow mechanical brakes, though I didn't have the needed motor or pinion/spur combination to allow use - I also have not yet figured out the brake actuation) - I used a bit of drag brake on the MM controller to get the diff working a second or so before entering the corners and it worked out great). The mount, top plate and front spacer will accept up to a 51 tooth spur gear without modifying the chassis. My test unit had a Castle MMaxx controller, UBEC, Novak fan, Wanderer/Feigao 9xl motor and a new black RC-Monster heatsink. I used a 16t hardened pinion on the stock 48t Losi spur. :)

Here are a couple pictures :) :