e-zilla and BL system - ideas and thoughs?
 

Well I know 1/10 electric MT this isnt even out yet but I think its worth talking about especially since I put some money down at the LHS for one. Iits good competiton for the emaxx and maybe itll spike some more MTs like it.

Anyway - I figure before I fiddle with motors/batts/esc - why not do it right and go straight BL and lipo (maybe), what do you think?

The only BL system I know about personally is mambas in minis :) im more a nitro guy but Im excited to get into it cause I love my BL/lipo setup in the 18t I got.

So, for the budget concious - whats a good recommendation for a newb - go with the hv-maxx - or do you all have something cheaper or comparable that would work well? I got a lipo so if you recommend going that route cool - but I dont have a clue what sorta lipos I would need and how many - cost is a factor but maybe its more cost effective to get 1 single larger lipo then tons of stick packs :)

Here is a link for those who dont know alot about the hot bodies ezilla...

http://www.hpiracing.co.jp/contents_...bodies/ezilla/
(with video)

http://www.hotbodiesonline.net/e_zilla.html

If this has been started elsewhere dont kill me - I did search but I think we could get something going :)

Thanks!
elite
BL newb

Wow, that e-zilla looks fast. Proabbably cuz hpi learned not to make the car so big and heavy like traxxas. How much they cost?

tower has em for 349 - 25 so for 325 rtr with a dual charger and batteries (2 sticks who knows what they are) it seems like a great deal to me!!!! I ordered it from my LHS - no idea what they will charge but im sure its competitive - I HOPE :)

Looks good doesnt it :)

So what to do , what to do .................. recommendations :)

I think it looks like a great addition to the ele. mt family. If it is the same size as the savage i hope theykept the basic design of the savage tranny, its goimg to need it if one finds it's way around here. I know i'm looking to get one(after i get a G REVO chassis)

just do your self a favor and run it a couple of times as stock, that way you have something to compare performance to. I've heard stories of so many people not even running the car before they rip it apart to put a BL setup, and more often than not in nitro rip out the engine to put something totally huge in. Of course in the nitro scenario you only have to break in one engine..., so i guess do what feels good,

I think I just talked my self out of my own arguement, sorry!

I agree it looks good.As far as set ups go i'd be inclined to go fairly conservative (12-14 cells)as it's quite a short wheelbase.

I wouldn't get the the HV maxx, if you go for a sensorless system you'll have more scope for different motors and cell counts.an MGM or BK controller or maybe the new Mamba maxx would be more versatile.

If you want to go lipo with it i'd recommend waiting for FMA's SkyVolt system(should be available mid september).It uses the cell balancing circuitry(safer) from the scorpion and balance pro but will charge up to 6 cell packs and will be available with the 20c kokam cells.

You could maybe run a pair of 4s in parallel with the Mamba maxx which i think will have LVC for lipo.Not sure what motor,maybe a 9l,any way a pair of 4s in parallel would give you lots of run time with an efficient motor at that voltage.

Actually a pair of the scorpion 2p2s packs in series should work the same and you could just use the warrior 9920 controller.(ask some one else about current draw first though as the 9920 is rated for 99 amps).The scorpion has LVC built in, just daisy chain the LVC connectors for multiple packs.

ummmmm - dude - you were speaking greek to me man - I said please in newb terms lol.....

Id wait for a newer system if you recommend, what are prices, whats it gonna run to get into BL - forgetting batteries for now.

HB is getting them THIS WEEK - they will hit stores in the next few weeks guys...I got got am email today.

Also they tossed in a lil teaser - "Out of the box they should hit around 25-30MPH with the potential to go much faster."

that was part of the email so im guessing they mean its definetly capable/ready for hotter motors and or more cells.....I saw a pic today with 7 cells - there was the 7th sticking outta the case, looked like the motors were upgraded as well but it was still a dual setup.

Anyhow, Im soooo excited about this - I love my nitro but still cant wait for it to arrive!

I'd say it's built to be a basher, with a race truck availible if you change a few things. The shocks are pretty soft it looks like, don't know if that's springs or oil, but it has some serious body roll while doing figure eights in that little vid. I'd still go for it though, if the E-Monster was my kind of thing, and I had the cash.

should be getting mine tomorrow so my LHS says :) im freakinnn sooo excited to see this baby....2 bad its a single speed.....but whatever ill take it :)

Im sure itll need a BL system soon heeheh but id like to sell all the stock stuff and im not sure what its worth...

oh well


lata :) ill post pics

uh-oh! single speed. u better get a big spur gear. That car is gunna keep flipping.

This may sound silly.....but on my revo, when I went with a larger spur it actually gave it more bite (low end).....isn't it the other way around?

smaller spur less low end?

Smaller spur has the same effect as bigger pinion.


Bigger pinion (or smaler spur) = less reduction

Smaller pinion (bigger spur) = more reduction


More reduction means more torque at the wheels but less top speed.

Less reduction gives you more top speed, but less torque.

THE REVO IS UNIQUE!

OPPS, i meant a bigger pinion or a small spur gear. LOL! i got if flip flopped

it is but thats not the right answer :0) hehe.

ya smaller spur/bigger pinion will get more top end and take off a lil of that monster punch but im sure there is a happy middle......hopfully ill get BL something or other and find out :)

pray it arrives today hehehe

I was looking at the overall length of the ezilla against a savage and it's 4" shorter(17" against 21" respectively)so you may need a smaller, less torquey setup like maybe an 8L or even a 10 or 12S (not sure of weight but probably lighter than an emaxx)but there are differences between the ezilla and savages

Yep that is kind of short. Is it narrower to. That would be a difference as well. Have to let us know on the test run. Maybe the savage guys can get the tranny out of it for there brushless conversions.

should i take er to the track today :)???

http://sandor.biz/ezilla/PDR_0316.JPG

How does it do? Handle good? Drive good? Let us know. Curious RCers want to know. :)

Why Boeties on only one side of the truck?

The other tires are on the background..

Looks like a short wheelbase.. Is that an Audi in the garage?

i was trying out some tires thats all, those are maxx bow ties, they seemed better fit then the response tires and some others, just testing.....

inddeeeeeddd thats an audi, good catch :)

had it at the track today, short wheelbase turns on a dime and as much as it looks like its about to tip over like a savage looks it handles pretty good stock!

I cant wait to try my cheap 3300s i got, stock is 2000 nicad - ill report when I get them but its quick enough for the track i run.....still want a BL system, waiting on the mamba maxx! :)

It will be interesting to see how durable the driveline is with brushless.

ok whats the cheapest way to get a BL in this bad boy...

It doesnt have to be a total rocket, just like 70mph, thats all....JK.

I dont even know where to start aside the hv-maxx.....which I dont think I want...and the mamba-maxx is to far out :) so what can I do on a budget...

I think ill stick to running twin 6cell stick packs in the stock locations......although I keep thinking I should run like 8-10 and save weight cause there comes a point where Im adding weight for more voltage but i dont know how worth it it is.....either way im not running 1000000 cells so with 12 possibly 14 and or less what do you recommend???

BL NEWB for sure here :)

A Feigao 9L or 10L with a Warrior 9920 is pretty much standard fare for a MT of that size. You will find any weak points in the driveline real quick though. lol

Looks good
How much does the e-zilla weigh rtr?

Can you fit more than 12 cells on the truck?

Most likely not. A setup with a 9l would need more then just 12 cells. Woudl 8L be a good setup for 12 cells?

i can cut out the battery tray a tiny and I could easy mod 7 cells on each side but honestly...

I dont want to blow drive parts all the time I just want it a little faster and longer run times if it were to be a little more efficent with BL.....

I dont need best...i need used and cheap but in good condition :) perhaps a hvmaxx? I dont know....im to new to electric and BL lol

Ah, the age old question... what BL motor to run? The answer to this question relies on your specific needs, requirements and personal preference.
I guess your budget would fall under requirements :)

What are you planning on using the truck for? bashing, racing, both...
How much run time do you require?

If you are racing, the runtime will most likely be less than if you are bashing because of the hard acceleration and constant throttle used in a race.

If you want a longer runtime you either need to use batteries with higher mAh rating (which = more weight) or run a system with higher voltage for increased efficiency (wich also = more weight).

It is my preference to run a higher voltage system because I feel it gives me more bang for my buck due to the increased efficiency. I ususally run ~20volts. I also race against the nitro trucks which have 12-15 minute Mains.

I think that if you can fit 14 cells on the truck, the 9L and the 9920 (from Mike) will work well. You'll probably need to adjust the gearing a touch regardless of the system you choose. Proper gear reduction is important to maximize the motor output and keep temperatures down.

Hope this helps

What size and pitch are the pinion gears?
The specs say that the e-zilla is 9.5lb rtr, is this correct?

I guess if it says 9.5 thats prob on par....it seems light without batteries, but ya ....with batteries installed I guess thats about right.

I just want it faster then stock, I mean 50mph would be cool but again its not realistic, and prob not necessary either. I would assume Ill run 3000s, or 3300s (sport packs for now) and 12-14 cells......

Gearing - 66T spur and 20T pinion is what I think is stock - ratio being 16.75 : 1

Hmm, 16.75 : 1 sounds a little high so I wouldn't be surprised if the the run time is shorter.
The stock e-maxx gear ratio's are:
1st gear: 28.9:1
2nd gear: 17.9:1

If/When you get a brushless system, I would recommend running the truck ~20:1 gear ratio, so probably a 15t or 16t pinion.
Nowadays, I always error on the side of caution (rather start with too low of gearing than high). You can always gear up if its too slow.

isnt a smaller pinion gonna produce more low end, faster starts?

if so, is that what you mean?

Yep, the smaller pinion will produce more bottom end but a lower top speed. You'll need to try different gearing to find the sweet spot. You don't want to over heat your motor or esc (I know, because I've done it). A BL motor shouldn't get over 180F
So higher gearing = a hotter running motor = less runtime
Here's some quick info about motors (FYI)
kv = rpm per volt
The 9L has 2731kv so at 14 cells or 16.8 volts your rpm will be 45880
At this max RPM I would suggest around a 22:1 gear ratio or a 15t pinion. I basically came to this conclusion from personal trial and error.
The 8L has a 3072kv so at 12 cells or 14.4 volts your max rpm will be 44236
You can adjust your rpm by adding or removing voltage.
I personally would favor getting the 9L over the 8L because the 9L runs at approx the same rpm at a higher voltage (more efficiency)

The KV rates Feigao gives are from an unloaded motor. take this allong in your calulations.

uhh if you dont want to blow diff and gears why not use a Mild BL like an HV-Maxx
I know u alrdy said u dont want HV
but its a good mild BL that wont blow your gears all over
but after a long time of running like 4 months
of course somethings gonna give sometime
like my maxx
my diffs and axles started breaking in half
and blowing screws and gears
oh yeah im running 7cell 2x HV-Maxx with 12/70 gearing

ya, Id prob be happy with a hvmaxx....but they are 250ish and for that i heep thinking should I want for the mamba maxx. Id get a used one perhaps, thats an option but there arent that many out there, thats all.

hvmaxx is better then buying a new dually esc and hotter motors and id prob get longer run times too.

so either way it seems like the recommendation is to get more low end, and lower the overall high RPM output.....thall give me more run time and more response off the line, that I can handle :)

Im still sure the hvmaxx is respectable...just got crazy when I got it and say you all posting these high end BLs so I was going nuts :)

Well elite you have to start somewhere. I started with the hv maxx as well. Even had two on one truck. I wish I would have found this place before had though. For the 250ish you put in the maxx you can run a sensorless for a couple more $. Jmo As long as you go brushless you doing good. :)

sensorless meaning?

I think its time to start digging for a used hvmaxx and go from there on my personal feeling and the recommendations here..

to had the LRP stuff isnt for MTs.....

I wish the mambamaxx was out and or had a price so I would know whats worth waiting for.

Perhaps everyone will sell off their hvmaxxs to get that and ill wait for a deal...

I dont know - im all over the place :)

thanks for all the input, its gets me thining and understanding alot more..especially about gearing and whats harder on a motor.....

thx

The hav maxx is nice to a point. I liked it when I first got it. It is a smooth motor. The hv maxx is a sensored motor. It has the wires to tell the esc what it is doing. I like the sensorless motors better. I really like the xl feigaos and such. One 7xl will out do 2 hvmaxx. You just have to upgrade the drive train. It is a lot of options. Figure out how many cells you going to run. That will put a range on what you can get or want to get. Good luck and happy rcing.

i started out with the ss5800