question about the medusa
do the 36 x 60 will fit my emaxx are not??

Yes, but you will need 5mm 32p pinions.

Ok, just got back from an approximate 15-20 minute run with the 4800 kv 50mm medusa V2 motor.

It's about 78 degrees out, sun was going down, and a relatively light breeze.

Model Setup:

-Rustler w/ RPM a-arms and swami bar (so maybe a tad heavier than a stock rustler due to the wheelie bar, which is a huge hunk of aluminum for the most part).
-Proline Road Rages all around
-Geared at 23/87 for a FDR of about 10.3:1 (by my speed calculator, it's about 35mph if voltage under load is about 7.4 volts)
-Battery was a Trinity 4500mah 2s lipo
-Full steel transmission (thank you RC-monster;)) and full ball bearings

Mamba Max setup:
-Custom timing, 12 degrees (in between normal and high)
-70% brake
-50% reverse
-Propotional throttle with reverse lockout
-Low start power
-0 punch control or drag brake
-6.2v cutoff
Results:

Motor temperature- 125F
Battery temperature- ~120F
ESC temperature (has a 5v Novak fan on it)- 98F

Overall impression:

This motor is EXACTLY what I've been looking for! It runs cool, it has plenty of torque, and it's super smooth. The truck just runs better overall, and this motor seems like it'll be perfect to run during the summer when temperatures hit high 80s and low 90s.

If anyone is considering one of the 50mm motors for a 1/10 truck like a Rustler, CRT .5, or anything else small, go for it! Well worth the money IMO.:yipi:

In other news, I just ordered the FLM transmission (from, of course, Mike; now everything but the top gear is from RC-monster for the Rusty's tranny:mdr:). The stock tranny looks like it's warping where the motor mounts:diablo:.

Awesome Joe. Good to hear yours is performing well also!

Me too! LOL! I think it's just BEGGING to be geared up more though....:diablo: I fear the batteries are on their way out though with that temperature. Then again, they WERE in that stupid hard case that Trinity puts them in. I took 'em outta the case, and am considering just some shrink wrap. For now, I put them back in the case, since I don't want them shorting on anything by accident.

I wish I could find more deals on A123's I got my first 16 cells for $7.31ea, best I can find lately is around $12/cell.

Good lipos are too expensive to subject them to the sandblasting my trucks get, so the A123's are the way to go IMO. Tough to fit in some vehicles though.

I even converted my MQ SE to 2s 1100mah A123's this weekend the little 1100 cells are pretty sweet for the fact I can charge them @8.8a. I do feel the voltage drop from 2s 1500 lipos though so I either need to gear up or drop in a higher kv motor(medusa 28-xx).

I've considered A123s, but for me, I'd have to buy the charger too. Coupled with a 2s2p pack, I'd be far beyond broke at the moment... Oh well...

The lipo I have now isn't puffed at all, so I think it'll hang on in there. I'll try drilling the case for some cooling holes (without the lipo in there of course) and see if that helps.

I here ya, my last charger was bought just at the begining of the A123 craze so I bought one with the capability even though it took me over a year to try A123.

I just saw the Onyx series of Duratrax chargers....so maybe A123s aren't ruled out quite yet. The one I'm looking at is about 80 bucks street price, does 1-3 lipos/liFe/liion cells, or 1-8 Nimh (psh...inferior technology...lol!) cells. Charges at up to 7 amps too, which is a huge step above my outdated Vision Peak Ultra or whatever in lipo mode. My charger is getting kind of old :tongue:.

I need a job first. I just got back from school. With the economy taking a nose dive, it may be another few weeks before I get a job:gasp:.

Too be honest that onyx looks to be a bit limited in performance. http://www.slkelectronics.com/lipodapter/index.htm I've been thinking about one of these.

The Onyx 230? It looks like it's more than what I would need. The only down side is only 3s lipo/A123. So if I decide to step up to a Maxx or an 1/8 conversion (more along the lines of "when" actually- just can't afford it right now), then the charger would be obsolete.

Does the MRC 989 do A123s? That's a charger I've always drooled over ever since it came out....:oops:

I've seen the "dapter". It's a great idea, but it doesn't charge to 100% (which probably will extend the lifetime of the batteries), so that bugs me a bit. I would personally rather the batteries take in their full rated capacity as opposed to a fraction; especially if it's a larger pack (I mean, I am paying for all the capacity, so I might as well use it....lol).:whistle:

I use my Astro Flight 109 to charge my 10S A123 which the charger sees as 9S lipos. You can charge 6S A123 (21.6v) as 5S lipos (21v).

Just a quick update. I geared the Rustler 25/87, and man, this thing was a monster! It seems more powerful than before, so I think I'm right around its sweet spot. Still super smooth though.

I forgot to take temperatures unfortunately, and got a little bogged down in some old friends stopping by to visit, so it wasn't a helluva run or anything. I still wheelied the poop out of it though, and that type of driving would easily heat up my 5700, but the medusa was luke warm at worst.:gasp:

Definitely a keeper.

Anyone else have trouble getting pinions onto the shaft though? I have to almost hammer the suckers on!:surprised:

That is good news. A little fine sanding on the shaft should help. I had the same issue with one of my other motors.

Ah... Good idea lutach, thank you!

Anyone found a source for the 36-60-2000kv model? Their site has said none available for a while now, and I can't seem to find em anywhere.

I cant find one:( I hope the price dosen't go up before they come back into stock.

Just ran the Rustler at 25/87 (about a 9.5:1 FDR in a heavy ass Rustler!) for about 10 or so minutes of continuous running (WOT passes, tons of wheelies, etc.) and got the following temperatures:

Motor- 130F
ESC- 115F
Lipo- 110F

It's about 80F out right now with a strong breeze (so I'm sure that helped). The cool part was that it had enough grunt to still wheelie at half throttle!

All of this while staying relatively cool. WOO!

As for where to buy them...I found a few places that carry the medusa V2 line, but none have the 60mm 2000kv version you are looking for sadly...:(

I'll see if I can find this one site that I'm PRETTY sure they had all of the motors in stock (at least a few weeks ago they did).

Found a site with the 36x60mm 2000kv motor! It's the 5mm shaft version though if that matters.

http://www.rchover.com/inc/sdetail/132324

Thanks! I just ordered one to try in my 1/8 buggy. I'll let everyone know how it runs. Hopefully it's close to a Neu 1512/2.5D in power and runtime.

I just orderd one from this link
Thanks :)

Ok, found an issue with the Medusa motors! The shafts on the 3.17mm motor are a wee bit too big, so when I put this one pinion on, it's a snug fit, all well and good, but when it comes time to take it off...it will NOT come off.

I've tried everything from heating the pinion up, to trying to break it loose by twisting the gear one way and the shaft the other, to simply just grabbing the pinion with a freakin' set of pliers and trying to rip the damn thing off. NOTHING!

I need a pinion puller is what it comes down to. So after this gear comes off (not if, but when), I need to sand the shaft down a tad so it doesn't crap out on me again like this.:diablo::diablo::diablo::diablo: :diablo::diablo::diablo::diablo::diablo:


Edit: Nevermind, I just dremeled the shit out of the pinion, sanded the shaft down (it looks like hell), and now have to go to the LHS to get another 25 tooth pinion. All of this just so I could remount the damn thing to the FLM tranny case, which was not fun at all...

Take fixing screw out and press trottle holding car, it must come out. It just happend if you put too much threadlock to screw. If you will take of try to clean shaft and pinion with some sandpaper.

I have no clue what you just said. I got it off anyways, and did sand the shaft down. Probably a little too much in fact, but pinions slide on and off easy and with the grub screw tightened down, they sit on the shaft just fine.

I'm running the 36-50-2000kv model in my 8ight right now. I've only had a chance to drive it around the parking lot but so far it's pretty impressive. I'm racing tomorrow at Barona Speedway, I'll keep notes on performance and temps, probably some video and definitely some pics.

Cool! Can't wait to hear how the 50mm version works. Video is always good :)

Well, I got a voicemail saying that the 36-60-2000 is out of stock from rchover.com, I still have to call back. Do you guys think the 50mm 2200kv motor would work well in an RC8 on 4S? I'm thinking I'd like to try it but I'm not sure it will stay cool. Even the Neu 1509 is 53.3mm long, while the 1512 is 60.9mm. What do you guys think?

I'm running the 4800kv 50mm long V2 in my Rustler (maybe 4lbs. or so?) geared 25/87 (9.5:1 FDR roughly), and the thing gets to around 130F after a hard run in the middle of the day (mid 80s; I'm in South Florida and summer is starting to set in with a vengeance). I don't know if that's even close enough to be a comparable load, but the little bugger can pull some gearing (I'm going to try 27/87 in a few minutes; hopefully my lipo won't hit cutoff from such a large load).

Sorry that rchover is out of 'em; the thingy said it was "in stock". They LIED!!!!

Ok, so I just got back inside (yeah, I run my truck late sometimes...that's why I picked electric...:mdr:). I had the truck geared 27/87 (8.764:1 FDR roughly), and holy crapola! I ran for about 13-15 minutes before I decided to go back inside. Here are my results.

Conditions:
-Night
-Slight Breeze
-75F-78F outside (let's say 76F)
-Lots of WOT passes, wheelies, rolling wheelies, a locked slipper clutch, a donut here and there

Temperatures after about 13-15 minutes:
Motor- 108F (:yipi:)
ESC- ~98F
Battery- 115F (outside of case); 130F (bare cells out of their case, pushing them a little hard I think, but it's staying relatively balanced with cell 1 being 3.764v and cell 2 being 3.761v)

Mamba Max Settings:
-Low start power
-6.0v cutoff (2s lipo)
-Normal timing (10 degrees)
-Proportional throttle w/ reverse lockout
-65% brake
-50% reverse throttle
-0% drag brake or punch control

This little motor is a beast! (According to my simple speed calculator, the truck was good for about 40 mph when voltage fell to about 7 volts, so at the beginning of the run, the truck was probably good for close to 45 mph- it was freaky fast at the very least even though the speed calculator isn't perfect.)

RChover is terrible for that!! I avoid them when possible.

I'm running the 36-50-3300 on 5s A123's in my Emaxx with no heat issues, been running under 120f.

I just ordered a Nue 1512 2.5d for my Emaxx, so the Medusa will be moved to a 10th scale all alloy truggy once the MMonster is in hand. I expect it to be awesome in the truggy though, it's much lighter than the Emaxx, but it will be geared to go faster as well.

How did it go?

I have order it on 1/5/2008 from them and they send me email with Reference Number (Receipt) but They did not send me a link for order tracking yet!!!

Do you means they sell something they don't have?

well, what I saw there was all the different sizes listed in a dropdown, but under the main generic heading it said 5 items available. So who knows which sizes they actually DO have in stock ?

J.

You can't really compare a Rustler to a 1/8 buggy, even if it is a fat one. :)

The guys at tekno... think the 50mm motor will do ok in a 1/8. But I'm going to do a 60mm if I try one. I can't see how an "S" size motor can do as good a job as an "L" can, esp when we had to run "XL" size with the chinese brands.

But they (tekno) are running the 50mm. If the car is light and made for the track (30-35mph) maybe it's ok.

True (the Rustler is starting to get "fat", even with all the RPM parts on it). Just trying to give an idea of the load the motor can take though; more or less for those thinking about trying it in a 1/10 vehicle.:whistle:

i run my 36-50-2200v2 in my e-savage, which is about 4.3kg/nimh 3.9kg/lipo...
thats pretty close to 1/8 scale weight...
my 36-60-2000v2`s home is in my lgt [well above 5.2kg/12lbs]...

4pole motors are typically comparable [torque-wise] to 2pole motors of 20-30% more length [kv assumed to be identical]... thats only a dumb general rule of thumb [pun intended] learned in the early days...
not that i would suggest a 50mm motor for 1/8... on the contrary, i fully agree that 60mm is the least i would pick for most 10-15lb 1/8 conversions... hence my 'wishes' for 75mm medusas for 'beasty conversions' [read: cen gst,mammoth mt,etc].

i think i am the first of the 'truck guys' to buy and run medusa motors, so that may be the reason i managed to get a 36-60-2000v2 along with my 36-50-2200v2 back in march: there wasn`t much of demand for these back then i guess... directly from medusa and they were in stock back then... both 36-50s and 36-60s...

a word of notice; according to medusa, very few distributors have the v2 batch... most carry v1 motors, which are a quite a bit less efficient than the v2... which is an extra reason to order directly from medusa imo...

Hey guys, the 50mm Medusa ran great yesterday. Motor got to 160 at its hottest (after 15 min of practice) but mostly stayed around 140-150. Top speed was great on 4s (I was running Hyperion 5350mah 16c and MaxAmps 6000mah 20c packs) and it also had plenty of torque. My setup weighs in at about 8 lbs (I'll get an exact weight of my setup by Monday or Tuesday) and it had no problems pulling it. That may be a little heavier than other conversions but I run a clutch and mechanical brakes. My gearing was stock for the Losi, 13/48. The only problem I had was the endbell started to come out after the first qualifier. I tapped it back in and ran CA around the seam and had no more problems with it throughout the day. I qualified 6th for the A main and quickly made my way up to 4th where I was battling the only truggy that showed up to race that day. The top 3 were really good drivers, one is sponsored and lapped everyone twice so I was really happy to have a battle for 4th. At the 7 min mark my buggy slowed and sounded like I stripped a spur so I pulled it off. The center rear driveshaft popped out of the center diff cup! I was done, I thought about trying to fix it (it was a 20 min main so I coulda made up some time) but I took some video of the other 2 brushless 8ight's running (they finished 2nd and 3rd). I will try to get it posted today but it might not be until Tuesday. Unfortunately I couldn't get anyone to get video of my running the Medusa but one of the other brushless setups was running a 1509 2y (1820kv) and he had a little more torque but on the back straight I could just walk away from him, but he was a better driver so it didn't matter, lol.
Anyway, it was a fun day, good testing. If there's any questions about my setup or the other 2 brushless guys I'd be happy to answer them. I may have a pic up later of the motor mounted up.

Sounds very good.... impressive for such a small motor.

Rustler: while it can't compare directly toa 1/8 buggy, it can still be a good way to compare in general. If you compare against other motors in the same vehicle... medusa vs neu or medusa vs feigao etc... or normally run 1/8 buggy type motors in it, that would be good info I think. Sorry if I sounded too negative before.

You didn't sound negative; I know what you mean when it comes to comparing one motor vs. another in different platforms. I will say that the Medusa compared to my 540 8s is like night and day. The 540 8s wasn't a terrible motor (got to around 160F-170F), but the Medusa just kills it in sheer torque, power, smoothness, and overall efficiency (130F MAX on the motor).

You guys are killing me! Im thinking I made a good choice on getting a 36-60-1600V2 for my Revo. It was delivered Friday, but now i have to go to the States for the next few months so i wont be able to do anything with it :(
When i ever get it going i will try to provide some useful info to this thread.

I am looking to find a cooler running solution for myself. currently I run a wanderer 9xl, that motor is 74mm. So I am a little concerned with a 60mm upgrade? Can anybody compare the Wanderer to the Medusa 38/60/ 1600V2. My other option is the Mega 22/45/1E Still 60mm but 6 pole, If I was to go to the Nue, I think I would get the 15/15/1Y or 2d

So which of the three would be the best choice with Money considered
Medusa 36/60/2000 or 1600
Mega 22/45/1E
Neu 15/15/1y or 2d


Highflier

What's your setup? Car, esc, battery, type of use etc....