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-   -   Budget intended conversion (https://www.rc-monster.com/forum/showthread.php?t=18652)

derek_18mt 02.09.2009 05:16 PM

Budget intended conversion
 
Hi guys i used to run nitro but ever since i bought my e-maxx a week ago i love it!!! Well i want to convert my st-rr but budget oriented because i just bought a e-maxx which will be stock forever. Ok anyways I found 2 esc's and i will be sticking too a 4s lipo setup but i will be running two 2s lipos i will race truggy but not that much. Now here are the 2 esc's
Either mamba max with 2fans
or this...read good things on it, which i will probably get!!
http://www.rc-monster.com/proddetail...rod=HW80ampesc

Now for the motor ?
A medusa but what kind?
Or a speedpassion 8.5t 2200kv
Fieego 8xl/9xl

*Please help guys I have been 2 rctech and they dont help for &*&*(:grrrrrr:

Arct1k 02.09.2009 05:19 PM

Honestly we have all been down this right but you are much better off with saving your money and doing it right the first time.

Buy a MMM combo 2200

The MM will require an UBEC to work on 4s whic basically gets you to a MMM. A feigao and a heatsink (unless used) will get you to a $100 which is close enough to a castle neu.

If you are looking used then thats different...

derek_18mt 02.09.2009 06:18 PM

Why cant i use the hobbywing esc, y does mike sell the hobbywing one if people r saying its junk, i read its great? Now what medusa motor on a 4s setup? If not I will go with the speed passion or novak combo!!!

Arct1k 02.09.2009 06:29 PM

I'd like to clarify I didn't say it was rubbish I just believe after several years of doing this your better off buying once correctly than trying to save $50 and then smoking something after a couple of days.

That esc is only 80amps however I would pair it with a Medusa 60mm 2000kv if you wanted to go down that route.

I just honestly think for $240 I'd take the MMM combo... $80 for the EZ and $120 for a motor = $200

The extra $40 for castle service is a no brainer IMO.

But each to their own...

derek_18mt 02.09.2009 06:49 PM

Where can u get the mmm combo for 240? But then i got 2 buy a motor mount and batterys..
whats wrong with an 80amp esc and the medusa combo?

Arct1k 02.09.2009 07:00 PM

I think 80amps might be a bit light and for the amount of the differential I would take Castle every time.

I've toasted 3 MM and castle helped me out on 1 and I paid the flat fee on 2. With an EZ I'd be out the purchase cost every time. I'm open to alternatives and have 3 medusa motors myself.

I've also run Novak, MGM, Quark and BK ESC's... But you said you had a budget which normally means do things once rather than experiment... which is why I direct you to the MMM combo...

BrianG 02.09.2009 07:13 PM

Quote:

Originally Posted by derek_18mt (Post 260337)
...whats wrong with an 80amp esc and the medusa combo?

Nothing wrong with an 80A ESC per se, it's just that we all like to have a little "headroom" when choosing a setup, especially in something as heavy as a truggy. If that ESC was capable of 6s, then pairing that with a ~1800 kv motor would work. But 4s on a truggy is gonna pull some pretty serious current if geared over 25-30mph, and you'll want a stronger ESC.

derek_18mt 02.09.2009 07:52 PM

Ok so save for the mmm combo i guess then...Im a sell the st-rr (nice condition i never used) and pick up a roller off ebay cheapier!

gogglespaesano 02.09.2009 10:21 PM

If you already have the st-rr, I would keep that rather than selling it and getting a roller of ebay. Just sell off the nitro stuff you aren't going to use and put that toward your conversion. If you buy a roller, you never really know what you're getting until you get it.

Arct1k is definitely trying to help you out by keeping you from making a mistake a lot of us have made and you'll find that BrianG is one of the electronics gurus on this site, definitely someone to listen to.

Good luck and post up pics of your conversion when it's done!

derek_18mt 02.09.2009 11:06 PM

well i have no nitro stuff to sell i bought as intended for racing nitro and its loaded with hop-ups..so basically there is nothing to sell.

magman 02.09.2009 11:20 PM

I made the mistake that these guys are talking about. I bought inexpensive stuff to see how I was going to like switching from nitro /electric. After blowing a few set ups up, I joined these forums, listened, took some GREAT advice and bought superior products to my first purchases. Put it this way, the two vehicles I have NEU motors in, total $ 420- for the two. (That's just for the 2 motors)

Quality comes w/a price...do it right once and forget about it or go cheap and sweat it out every time you take it out. Don't skimp, take some good advice and then......GO FAST!:mdr:

BrianG 02.10.2009 12:00 AM

Confucius say "It's always better to buy right once than to buy wrong several times"...

magman 02.10.2009 07:26 AM

Quote:

Originally Posted by BrianG (Post 260510)
Confucius say "It's always better to buy right once than to buy wrong several times"...

Amen to that....If I was smart enough at the time of my first conversion to take good advice for the members here, it would have saved me a bunch of $...hind sight is always 20/20:whistle:

derek_18mt 02.11.2009 12:41 AM

So going with a 4s setup what kv motor do i want???

e-rev project 02.11.2009 02:34 AM

yeah i've got a 1500 dollar just to make it drivable without breaking e-maxx that i hate pre- rc monster. compared to my revo conversion $700 post rc-monster that i love. i should have found this forum earlier. listen to these peoples advice.

derek_18mt 02.11.2009 04:48 PM

4s setup what kv motor?

Arct1k 02.11.2009 04:56 PM

Truggy/MT 2200kv 1515 1Y or 2000kv 70mm Medusa

BrianG 02.11.2009 04:59 PM

Around 2000kv

derek_18mt 02.11.2009 05:02 PM

should i go with medusa or the mmm combo or the speed passion combo?

Arct1k 02.11.2009 05:08 PM

MMM combo IMO but I think you know that by now - LOL

derek_18mt 02.11.2009 05:33 PM

ok one more question what about a novak hv esc and a medusa/neu 1512(only nue i can afford haha)

BrianG 02.11.2009 05:37 PM

Nope. The Novak ESC needs a sensored motor. However, you could use a sensorless ESC with a sensored motor (just don't hook up the sensor wire).

derek_18mt 02.11.2009 05:48 PM

is sensored better?

BrianG 02.11.2009 05:55 PM

Only for realllllyyyy slow moving. Once the vehicle is over ~1mph, sensored has no advantage.

derek_18mt 02.11.2009 06:07 PM

how does the novak 5.5 work in a truggy?

BrianG 02.11.2009 06:08 PM

Too small unless you use really low gearing for speeds no more than 30mph IMO.

What's_nitro? 02.11.2009 06:09 PM

Quote:

Originally Posted by derek_18mt (Post 260986)
how does the novak 5.5 work in a truggy?

It doesn't. The Novak HV series can be used in 1/8 trucks, but thier motors are not nearly as powerful due to the smaller diameter rotor used.

Edit: Did you mean to say HV?

derek_18mt 02.11.2009 06:36 PM

should i run 4s or 6s?? srry for all the questions

BrianG 02.11.2009 06:39 PM

Depends on your ESC. Can it handle 6s? You generally use a battery voltage as high as the ESC will support, and then a motor kv that will get you a total of ~35-40krpm.

derek_18mt 02.11.2009 06:51 PM

What about a 8.5 2200kv motor (sensored) on 4s lipos setup with novak esc???

Arct1k 02.11.2009 06:54 PM

Do you have the novak ESC? It doesn't have a switching BEC even - It really is old tech now...

The rotor size on the Novak is not very big...

The MMM combo or a Medusa is a much better proposition.

derek_18mt 02.11.2009 07:15 PM

just dont want to soend the money but i guess i will.
6s or 4s setup is alls need to know if i get the mmm
I was looking at this combo 2200kv like mmm

http://www.speedpassion.net/product.php?lang=&c=43

What's_nitro? 02.11.2009 08:58 PM

If you wanna save some money, get the setup made for 4s. Then the battery is cheaper.

derek_18mt 02.11.2009 09:14 PM

With that motor combo would it just be like running the mmm on 4s??? Also is 4s the best all around setup if u gonna be doin some racing and bashing??

Arct1k 02.11.2009 09:45 PM

It is fine - perfect for both

derek_18mt 02.11.2009 09:58 PM

I found a site thats selling the esc for 135 and combo for 254!!!! Which should i get?

Arct1k 02.11.2009 09:59 PM

i'll be testing it in a couple of weeks - will let you know... Looks novak cloneish - 4s and sensored.

derek_18mt 02.11.2009 10:12 PM

ok well ima go with the mmm because it the same price.. and proven u think thats better insead of wasting my money incase speedpassion not good?

Arct1k 02.11.2009 10:20 PM

yay - good choice...

gogglespaesano 02.12.2009 12:44 AM

+1 good choice!


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