Hyper Mini STe Electric 1/12 Truggy
 

Well my new mini truggy shipped this afternoon from nitrohouse.. now the fun begins..

Problems? Lack of detail to calculate top speeds..

• From my understanding the diff gears are 10t and 22t (2.2 ratio)
• From my understanding the spur is 40t mod1
• No tranny - direct drive on center diff
• Tires ? 3.5" would be my best guess

Please post detail if you have more or if you know for sure!

Battery Tray Specs (should be pretty accurate)

• 5.75" long (146mm)
• 1.4375" wide (36.5mm)

My plans.. No major mods, this baby is stacked from the get go and for 199 it's a deal iMO. No junk electronics to sell off either :)

Electronics- Lucky for me I had all these sitting around other than the Rx

• MM esc - no mods (auto lipo)
• Velineon 3500kv brushless motor
• Spektrum SR3500 (finally get to use the dx3.0 thats been sitting in the corner since I got my dx3r)
• Hitec servo (sorry forget model #) 180 torque though more than enough

From the salesman (Tim) I spoke to most people are running 540 motors (not 380s) and typical setup there is an mm6900. I think the velineon is a ton better of a motor than those castles, as it stays a ton cooler geared at the same speeds. I'm only looking for 40-45mph so if my calculations are correct the included 14t pinion should be perfect (42.9). I'm a little skeptical on these calculations though but w/ a 3s on the velineon I'm getting 64mph using BrianG's calc page with the above figures. That is a bit insane and not what I'm looking for as I will be on the race track all the time. I did order a 16t pinion when I got it as Tim said everyone was running the stock pinion on a 6900 MM system on 2s considering the kv different btw the 6900 and my 3500 I thought it would be needed... but maybe not?

Again please post if you have more detail and I will update when I get the truck in a few days!! YAY! I'm so glad I saw this truck before I bought one of those new traxxas mini e-revo's. Those are pretty sweet lil trucks too but this Mini Hyper STe smokes it.


A few notes on tweaks..

Diff fluids 1 rear, 3 center, 3front is what most are using (I plan on 1, 5, 3 at first but who knows)
Springs - Losi 10th scale fit (yellow seem to be the best)

I was just looking on nitrohouse's site and the tooth count may not have been what I was given, if anyone is positive please post...

I'm thinking she gave me the wrong figures and it should have been a 40t and 10t or a (4:1) This makes things fit better but again I cannot confirm this (yet).

I maybe forced to run 3s or swap out motors for something w/ a higher KV rating or she will be poking along.. I think I am limited w/ my gearing options w/ this velineon at 3500 I would only be 27mph with the 16t pinion and it doesn't seem like there is room for a large 24t beast in there :P In fact they only supply 11-16t for a range, not that you couldn't squeek something else by though.

Well for now it seems I'm talking to myself.. LOL

But I talked to the guy at the shop today and he checked a few things... provided he can count :)

Spur gear is actually 41t
Diff drive/pinion are 39/10 3.9 ratio

That's it for now...

I do not have a .5 class truck, but from what i have seen, the MM motors seem to heat up in them. The 3500kv VXL seems to work great, Though most here like the 1506 neu's or 50mm medusa's around 3300kv

What voltage to they run at? 2s lipo w/ a 3300 motor wouldn't even be able to break 35mph from my calculations (not being 100% on the ratios) I could be off but not by much... Good to know about the MM's though, I guess thinking back my 1/10 rusty would even overheat w/ the 5700 so I'll steer clear of that mess. I really want to use my Velineon motor as I know it can do the job, I'm just worried about top end, specifically lack there of. I guess I can get it try it and GPS to confirm the speed calculator then start looking for pinions and if I can't fit the 24t pinion I calculate I need to hit 45mph I will maybe get one of those new MeduSA 50mm motors 5900kv rated.

With the 3300 on 2s you need around an 18t pinion and 2.8 or 30's tires... The 3300 allows you to go up to 3 or even 4s...

I run this setup on 2 cars and it works fine however if you are strictly 2s then you should consider getting the 4800kv...

Much better to go for a medusa 50mm v2 as it has a 5mm shaft - the vxl and MM are 1/8th can snap under stress.

I ran my velineon solo in my erevo for a short time.. that shaft isn't likely to "snap" with a little mini truggy :) I kept it geared for about 38 in the erevo, but that was on 4s lipo. I will only be running 2s 5k lipo hard shell race packs (typical restraint for most normal race tracks). I just wasn't sure if I could get the gearing high enough due to the size and mount to make my velineon hit 40ish in it. I have a 16t that fits and is mod 1, but funny enough anything bigger all requires the reducer as they are all 5mm bore pinions. Lots of those available though again 24t is the tallest I would want if my calculations are correct.

The E-revo has a slipper which reduces shock on the motor shaft the CRT.5 is direct drive.

I'm talking from experience - I've converted 4 CRT .5 and have snapped a shaft on a Feigao L with one - Feigao also make the VXL motor which is M length. If you have it you might as well run it but it wouldn't be my choice to buy.

In terms of gearing 18T, 2s, 3500kv and 3.8/30's should be fine for track...

Differential Ratio: 3.25
Transmission Ratio: 1
Other Ratio: 1
Spur Tooth Count: 46
Pinion Tooth Count: 18
Total Voltage: 7.4
Motor KV: 3500
Tire Diameter (inches): 3.93
Tire Ballooning (inches): 0
Motor Current Draw: 0
Motor coil Ω: 0
Spur/Pinion Ratio: 2.56 : 1
Total Ratio: 8.30556 : 1
Tire Circumference (inches): 12.35 inches (313.6 mm)
Total Motor Speed: 25900 RPM
Vehicle Speed: 36.46 mph (58.57 km/h)
Effective KV Value: 3500
KT constant: 0.39 oz-in/A

I snapped a 1/8" shaft on a simple feigao S motor on 3S. The DD is quite hard on the motor shaft.
The VXLs aren't great motors either. A medusa 5mm is a much wiser option. I have a 2200 kv on 4S and its plenty plenty fast. I've raced with Chris's .5 above (one of them at least lol) and both are great and close in power. The small wheelbases on the mini's make them a bit of a handful if they get too high powered. I turn mine down a lot even at that do avoid all the flips and wheelies so much. Still does nearly 50 w/ a 16T pinion iirc. The medusa's like to be geared fairly low and load up before they really wake up in my experience.

The vxl motor has a shorter magnet and windings than a S can feigao... So technically it is an XS motor... Similar power output though.

You guys suck.. I really didn't need to spend more money.. but you twisted my arm. I ordered the Medusa 36/50/4800kv -5mm to toss in it. I was all set to use a MM as well, but I may just toss in my spare MMM and use the MM w/ the velineon for another project or sell it as a combo.

Blah!

Should be ball park 43mph.. we shall see, that is using the diff ratio from a crt .5 which I don't think is the same..... in which case I'll just move from a 14t to a 16t to make up the difference. Going to try to keep this beast on 2s 5k hard shell race packs. I guess competition will tell if I end up on 3s lipo w/ different gearing.. we shall see.

With 2 the MM will be fine on that motor. The MMM may be difficult to fit on the smaller chassis...

+1 on 2/3/4s - stay with MM - very much up to the job

The MMM is pretty massive for the little chassis. A SW is a good option too.

Arct1k: I think your mod powers have gone to your head! I did mean 5mm in my post, meaning 5mm shaft lol. Should say 50mm/5mm I guess

Help, help! I'm being oppressed!

The 4800 on 2S should be great, its more rpms than I run w/ my 2200 on 4S, and it runs upper 40s easy, and great runtimes on a 2100mah pack.

Try to help and look where it gets me - LOL! Changed back!

It needs to say a Medusa with a 5mm shaft is a much wiser option.

That would make sense considering your previous statements.

Look at this, a bunch a fookin critics.. Hey, that's what you get for asking free advice on the intarweb! Lucky I didn't link to a bunch of Russian porno sites lol.

It was in the context of the broken shafts, so made sense to me. 50/60mm, I don't care. If you don't like it, go piss! Its Friday, its a nice day, and I'm going home to have a nice beer and fix my Savvy! Lates and have a nice weekend gents!

:na::party:

OK she came in today!

First off.. gearing is a 3.9 to calculate with (NOT the same as the crt .5)
Stock spur is 42t, stock pinion is 14t (matches nitro)

Second off this thing is simply AMAZING!

#1 open box
#2 stare
#3 stare some more and smile
#4 take it to my work bench and remove all diffs (running 7k, 10k, 3k) -re-install
#5 install my new Medusa 36x50mm 4800kv (taping the ends to keep dust down inside it)
#6 install mamba and my micro spektrum Rx on the top brace over the center diff
#7 install servo and set
#8 zip tie servo wire to motor mount to keep it from swinging around and getting caught up in the center diff
#9 make some nice pulls
#10 slap a couple stickers on the wing while I wait for hte body to dry
#11 run around the house for a minute, sill smiling big :)
#12 cut up some lexan for rear mud guards (about the only thing left off this bad boy)


I will finish up painting the lid tomorrow.. but here are some pics of the install.. crt .5 owners it's ok if I were you I'd be jealous too!!

The pics!!

http://i172.photobucket.com/albums/w...miniSTe002.jpghttp://i172.photobucket.com/albums/w...miniSTe008.jpg
http://i172.photobucket.com/albums/w...miniSTe001.jpghttp://i172.photobucket.com/albums/w...miniSTe003.jpg
http://i172.photobucket.com/albums/w...miniSTe004.jpghttp://i172.photobucket.com/albums/w...miniSTe007.jpg
http://i172.photobucket.com/albums/w...miniSTe009.jpghttp://i172.photobucket.com/albums/w...miniSTe011.jpg

Body set now as well..

http://i172.photobucket.com/albums/w...h/IMG_4874.jpghttp://i172.photobucket.com/albums/w...h/IMG_4876.jpg

Beautiful! How is your servo mounted?

That is the stock mounting location for the servo. It's a nice bracket actually... but again stock.

Here is a quick video of some racing at the track ;) w/ the current setup.. I did find it liked to nose dive a little if you are not careful.. not sure yet if that is just my driving or the truck as it is a LOT harder to correct yourself in mid air w/ these small trucks than with a 1:8 scale :)

http://www.youtube.com/watch?v=xCJlpcCUFDM

Nice looking truck you got there. I know they are tough and you'll have a lot of fun with it. Very nice track.

how balanced is this truck with the battery on one side?

I have been eyeing this for about a week. I have a VXL and lipo ready for it.
I know you all are saying stay away from that set up, but it would work for now.

"crt .5 owners it's ok if I were you I'd be jealous too!!"
I picked up the mini hyper truglet, but I prefer the crt.5 myself(even with a stock chassis conversion). Of course both my crt.5s have my chassis installed(v2 on 1 and v3 on the other). Cool little trucks, though(both the crt.5 and mini hyperst). :)

Mike can you post some side by side pictures comparing the Hyper ST and the CRT.5?

Why do you prefer the CRT .5? Just curious.

Very balanced.. motor on one side battery on the other.

VXL will work, but it'll need to be geared a bit tall due to the low Kv

motors tried in comparison on minies
 

let me start by saying that i spent alot of money buying and trying a lot of big name comercialy available motors and esc combos.Because i live in oc., CAand am close to NOVAK,TRINITY,Assosiated,ORIAN ect. i started out with aGTB witch i already had and an Orian 10.5 .im running an RCM crt .5 so im alittle heavier than your hyper mini, by around 1 lbs 6oz. so the 10.5 worked but wasnt fast enough to race so i got talked into a 4.5 LRP that halled but broke very quickly because it frankly has a weak asembly design.it ran long enough to work out the gearing at 9 or 10 tooth mod 1 and would come off at 160 deg so i cant change the spur '46th' and 4.5 was crazy so i got a Orian 6.5 ant it seemed perfect coming off at 140/150deg and very fast but wile bashing .it went 200deg in two min.all this was on2s 46 th spur 9/10 pinion so i gave up and put an HV 7.5 on 3s 14 to 16 th and itll run all day at 140deg bashing or raceing. for what its worth good luck and dont forget to have fun!

On my CRT.5 I can run 2 back to back packs through my Medusa 36-50-4800 geared for 34MPH and it is generally in the 120's, I temped it at 133* once on a 90* day. ~4800kv seems to be the ticket for 2s and ~3300kv on 3s

Hey Stum, planning on getting a Hyper Ste and would like your input since you seem to have more time with it than anyone else here. I started a thread: http://www.rc-monster.com/forum/show...626#post290626 Any input would be greatly appreciated!

posted on the other thread.

Thanks

Hi,

I got mine in the mail today. Have a few questions:
The diff ratio really is 3.9?
Spur is 42?
And tire diameter is 3.5"?

Just checking b/c I'm running 6s with a medusa 1300kv(which I had lying around), and with the speedcalc I'll need a 22t pinion to gear for 40mph....If I go for bigger(4") wheels for some more ground clearance is I can drop to a 19t pinion.

BTW my Ste came with a different body, it's a pro-line body and looks like a crowd-pleaser.

almost done:
http://img525.imageshack.us/img525/8...0907100067.jpg

I read somewhere that they were going to start using Pro-Line CRT.5 Crowd Pleaser bodies. Can you get some pictures of it. That would increase sales because the Hyper STe style body is ugly as hell.

BTW is that a 60mm Medusa?

Yes, that's a 60mm1300kv medusa. And I replaced the MMM, it's too big and won't fit under the body. I now have a MGM 8s140amp controller in it....
Not because I want to be overpowered, but I just had this stuff lying around...

I'll take a picture of the body later. I looked at the box, and there's a sticker on it saying from now on the include the crowd pleaser body.

Dang, I was thinking about doing a 6 or 5S Hyper STe and using a MMM but I guess not. I hope the MMPro will be able to handle a Medusa 50mm.

http://i798.photobucket.com/albums/y...90711_0069.jpg
http://i798.photobucket.com/albums/y...90711_0070.jpg
http://i798.photobucket.com/albums/y...90711_0071.jpg

Thanks, that looks 1000% better then the original body. I really wish that the MMM would've fit though...