I Love Novak
 

I have a 15lb Muggy with big Joe tires and I want to run Novak because im loyal, What do you recommend as gearing for a 14lb monster truck with 8" 1lb each wheels ? (x4) its all roar right

Novak has the smoothest sweetest brushless setups I've ever used, but they will thermal left and right in your truck. I still have my first novak...a 22 year old 410-hpc!

hah ive used the goodole 410s and there very nice ESCs actually. (for the age)

sorry i cant help with the question just thought id give another thumbs up to novak

Which setup? HV I am assuming.

Sarcasm???

Seems like it to me. If you are serious, I would go with the 6.5 system on 5s and gear as low as you can. You will need to go up to a 62t spur from the crt, and most likely a 14t pinion. Diff ratios are 11/45 in the muggy, and with 8" tall tires the stock 46t spur will not offer enough reduction, unless you use a 5-6t pinion....

No it needs 6s and he can use the stock gearing.

7.5 on 6s w/ MMM esc is the ticket geared 40:1

Surely, not sarcasm? :wink: But, there is an interesting question.

There are no ROAR rules affecting HV motors. I've heard that some guys are trying to cobble together some rules for 1/8th electric racing, but they will probably be wide open, anything goes.

I can check with Bob about the vehicle weights and the setups he used for his conversions We did this chart for winds/gears for the E-Maxx:

HV Pro System Speeds in E-Maxx

Here is the page for system/gearing suggestions for the various 1/8 Scale conversions:

Novak Nitro to Electric Conversion Kits

I'd imagine the gear ratios in an emaxx and an erevo are different. How would the emaxx chart differ if it were for an erevo? Higher or lower speeds?

(Hope I'm not thread stealing)

Thanks.

Well a 12 tooth pinion with the stock spur yields about 30:1 in an E-maxx and the tires are 6" tall. Thats probably a good starting point for all HV motors so thats how I came up with 40:1 with 8" tires.

I am sure that you have noticed the various Novak based "disagreements" of late on the forum. Is there any info as to the wattage output of the hv motor, on 4s lipo? I am assuming all of the winds will produce similar output is the same vehicle when geared correctly.

I only ask as many are either pro novak or not. Looking at the motor's design and dimension (I have a 6.5hv) it appears to be a good option for a 1/8 buggy or a 1/10 MT like an emaxx. I would not consider it an option for a truggy, or an 1/8 MT, due to the weight of these vehicles. I am assuming that most want a setup geared for around 40mph, and am going off my experience with heavier vehicles. I do not have a hv esc, mainly as the old model lacked the adjustability that I like. I do have a few gtbs and xbrs, and am happy to see the hv pro has the newer programming. Now if only I could get my hands on one for a really good price...for testing purposes:wink: :whistle:

The new emaxx and erevo use the same diffs, internal tranny ratios and tire heights. The novak gearing chart is related to the old emaxx though...

I'm pretty sure the chart I posted up thread is for the new E-Maxx, although the new Traxxas part number should have been included in the copy. The new E-Maxx is the reason that we redid the HV shaft/rotor and tooled up the 5mm/32 pitch gears.

The only thing I could find for wattage was the BL motor spec chart:

Novak Brushless Motor Specs

I'm sure that I haven't yet seen all the various Novak-based "disagreements"----I have to ration myself, or else I'll need to go have me a little "lie down"....:wink:

But I am composing an email to the engineers who can answer some of these questions. If you already have a 5mm rotor in your HV motor, PM me and I will see what I can do---I have pretty good contacts here.:yes:

Some of the "wording" is harsh, and I do not agree with most of it. The basis for the arguments is too vague for me, and I will just stay out of it.

I will send you a PM... Thanks!

The answer to the wattage question is that wattage is the same no matter the number of cells.

To clarify, the wattage ratings that the motor can use/dissipate is the same no matter the number of cells.

When you increase voltage from say, 2s to 3s lipo, current will go up (assuming the same gearing), which will cause wattage to go up as well. If this wattage is higher than the motor can handle, then it will overheat. If you increase the cell count, and reduce the gearing, current can drop to approximately maintain the target wattage.

However, our setups are "peaky" by nature, so you'll have high power bursts, and much lower power for normal running. If you pull 1500w 1 second bursts every 5 seconds (20% of the time), then pull 250w for normal running (the remaining 80% of the time), your average power consumption is 500w.

Good question and input. I'll forward this to the ED (Engineering Dept:wink:) and see what they have to say.

Hey, did you receive my PM?

Yeah that wouldn't make sense that the wattage is the same no matter the number of cells, because for instance, we all know that a 2000 kv motor on 6s is at least as powerful and efficient as a 3000 kv motor of the same design on 4s.

Yes, been busy today---I'll try to get an answer tomorrow.

I will say first that i have no problems with novak's, they are good starter systems, with potential for racing, perhaps a bit better than most high-end brushless setups. I love how Novak seems to have matched Nitro's power to weight ratio, Most high-end unsensored setups may be overpowered. That said, the origional poster may want to get a stronger setup. a 14 pound muggy may be a bit too much for the little (380 diameter rotor) Novak hv to handle. Sorry Novak two, but i think the HV, even the 7.5 or 8.5 (whichever is the highest wind) would be in a bad situation

Well if you're really in love with novak then you could get two hv systems to put in your truck. :)

I'm thinkin' no one loves us that much......

I asked Bob and he said it's probably like putting a Volkswagon motor in a Hummer. If you gear it correctly, it will move ---but very slowly.

He said 2 HV Pro Systems would do the job.

I really think the main complaints are: That you guys were a bit behind on Lipo cut-off, and the small diameter rotors in the MT motors. I started my brushless adventures with an HV system and will never trade them memories for anything, But i wanted more power and a Lipo cut-off, So i went mamba and eventually to quarks for my MT and HV needs. I still love novak's and will consider one for racing, now that the Lipo cut-off is in the esc. I'm hoping to run a G2R revo or E-revo next year in Nitro classes

Will the Novak pro HV 6.5 System work in a E Slayer

No reason it shouldn't. Being as light as the slayer is, you could gear up more than on a revo or maxx.

Novak claims 40 mph even with their 8.5 turn non hv motor.

Shhh,
You can't say the M word in novak's territory. :lol:

I'm just telling my story, I never said anything bad about Novak. But for future eference, I'll use brand-M and brand-Q. As I said, I wouldn't have any qualms about running a Novak in racing. I think the highest turn motor would be perfect for 4s Lipo in a Nitro mosh pit of a race

Sorry if i offended Novak in any way

The Novak company is not full of sensitive, delicate flowers...:lol:

what gearing do you guys rekommend in my grevo?
i have a HVmaxx 4.5 and use maxamps 2s lipo.
today i use 15/72 and dont like the speed. i need the car too get qicker.

Novak doesn't leave a lot of room for gearing options. If that is their recommended gearing then you are pretty much stuck.

Of course I am assuming you are using 2 x 2s packs for 4s total?

My recommendation would be to look at the MMM combo or the Tekin RX8.

no it is not what their recommend. i have today 15/72. but i need moore speed.
http://www.teamnovak.com/products/br...ems/index.html

i think emaxx original is 68t. and they recommend 12t. so i think i will try 12/70. anybody that have used that gearing??

12/70 is slower than 15/72 - The reason they choose the gearing is to avoid overheating - just gradually up the pinion and check for temp issues.

is that true?bigger pinion is the trick!
thats bad i hav allready order 12/70...

Well you said you wanted to go faster...

15/72 = 4.8 revs of motor for 1 rev of input shaft
12/70 = 5.8 revs of motor for 1 rev of input shaft

i,e, 4.8/5.8 i,e, 18% SLOWER!!!

Just think you can now run 15/70 = 4.666 revs of motor for 1 rev of input shaft

Should be about 3% faster if you can notice...

in Novaks test is 12/68 faster than 14/68 is.
can i get moor speed in an other gearing than 15/70?
the temp is not a problem because i the esc have samr sort of temp protection

They can still cook even with thermal protection - faster with lower gearing would imply over geared already i.e. motor can't spin faster.

A bit like driving in 5th gear up a hill if you drop down to 4th you can actually go quicker...

Basically you have too more options to try... 12/70 lower gearing to see if that was holding the car back or gear up and see if motor will take it with 15/70