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  #1  
Old 12-27-2006, 01:36 AM
TheSteve TheSteve is offline
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My Brushless Micro-T lives!

I've been working on a Brushless Micro-T and today I drove it for the first time.


I have everything but my LiPo packs so I had to try it on the 4 cell nimh pack.
The Castle Creations PHX-10 controller can drive the truck slower then the stock speed control. It doesn't cog at all, it does have a very slight ramp up to full power though(I believe its the 4 volt LVC in the controller), keeps it from doing a wheelie - with the nimh pack anyway, based on the speed and torque it will be wheelie city with the LiPo pack. I am using the medium pinion gear, its obvious I can goto the largest pinion. The body fits with no rubbing, no sign of the motor warming up. The ESC is forward only and brakes when in the neutral setting so I disabled the brake, the slight drag of the gearbox and motor seems to be fine, I may add a slightly delayed light brake when I can fine tune it with the LiPo's.

Once again peace has been restored in the RC world, all of my cars are brushless powered!!! Now where are my LiPo's !!!

Equipment used:

Micro-T with ball bearing upgrade
Spektrum SR3500 receiver
Castle Creations PHX-10 brushless ESC
Feigao LPS 5250 brushless motor - 12x22mm 5250kv
Deans micro connectors

4 cell Nimh pack at the moment, soon to be a 2 cell 250ma 20C LiPo

I'll be doing a scale dragrace between a stock Micro-T and the brushless version once the LiPo's arrive. I have access to a full drag system including a 6 inch tree.
I will also post the weight differences between stock and brushless/LiPo, as well as the runtime differences.
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  #2  
Old 12-27-2006, 05:22 AM
TheSteve TheSteve is offline
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With the body on:
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  #3  
Old 12-27-2006, 09:04 AM
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Dude that is nice.......so how is it on the straight.
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  #4  
Old 12-27-2006, 07:00 PM
Fajita Dave Fajita Dave is offline
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Are you insane?! That thing is to fast for its size stock. You have to post a video of that thing .

What steering servo did you use anyway?
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  #5  
Old 12-27-2006, 09:53 PM
TheSteve TheSteve is offline
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I am using the stock servo, I added the electronics driver board out of an Airtronics 94091Z I had kicking around that had gear problems. So now it works like a regular servo.
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  #6  
Old 12-27-2006, 10:02 PM
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now all you need... http://yourmicro.com/forums/showthre...threadid=19010
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  #7  
Old 12-28-2006, 03:38 PM
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That is a MEAN lookin Micro-T!

Nicely done TheSteve!
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M18 w/Motek 150 Chassis
- Xray Comp Ball Diff front, Alum Ball Diff rear
- GPM Shocks and rear Drive Shafts
- Mamba 25 ESC w/USB Link (v2.18)
- Mamba 6800Kv Motor (17t/42t pinion/spur)
- Futaba S3102 Servo w/Xray Servo Saver
- Spektrum DX3 Tx w/SR3000 Rx
- Xray Hard Foams front, Med Foams rear
- 2x6cell 1100maH NiMH
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- 1x3s 1100maH LiPo
Losi Micro-T
- Full River 250mah Lipos on the way
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  #8  
Old 12-29-2006, 01:14 AM
andyvader
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Cool

Quote:
Originally Posted by TheSteve View Post
With the body on:
were did you get the body? i have been looking all over.



thanks,
andy
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  #9  
Old 12-29-2006, 04:40 PM
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I still think you should give the kans a try,,,,,, comparing the stock to my lipo to my kans,,, the kans win it..
stock 150mah with medium pinion
2 cell lipo 150mah with largest pinion w/ micro deans
kans 160mah with largest pinion with micro deans

-the kans has more torque than the stock with less run time but the power lasts longer ,, it will wheelIes on demand and ride it as long as I want on a hardwood floor
-the lipo is like running stock with largest pinion-no power and takes time to get to speed

for 7 bux you cant go wrong and you could do a COMPLETE test for those that dont have a lipo but would still lIke a bl
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Old 12-29-2006, 09:45 PM
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Listen to the man will ya......he know's his stuff.
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  #11  
Old 01-02-2007, 08:02 PM
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jaejew- you sorta have your thinking right, but not all the way.
when you mess with lipos its not just find a pack that will fit and you are done. you need to fint one that fits, has a goot c rating and has enought mah to get the desired discharge rating out of the pack to accually power the motor. if you dont take into consideration all of thoes you will have lipos that are doing what you explain (i have the same problem). for the micro t you need cells that are close to a 20c rating and have at minimum 150 mah for them to be better than the stock set up.
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  #12  
Old 01-02-2007, 08:05 PM
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Hey buddy can you post any links to some good cells so other members here know what to get.
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  #13  
Old 01-02-2007, 08:13 PM
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http://www.bphobbies.com/view.asp?id...27&pid=U351143 there is a god cell to use, just remeimber when soldering lipos, you need a alunimum based solder, and do this with caution!
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  #14  
Old 01-02-2007, 08:45 PM
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well I was using that lil lipo pack that was made by wattage ,, the pneumonia used for that micro ind_r plane,,, the same that was first used and video'ed in the micro-t,,,,,, but I will give another try at the lipo
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  #15  
Old 01-03-2007, 02:25 AM
TheSteve TheSteve is offline
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A good nimh will perform better then a poor LiPo pack.If you get good LiPo cells though they willout perform nimh cells.
The LiPo pack I have maintains voltage for the entire run. Its been tested with the stock DC motor as well as with my brushless system. I now have a mamba25 installed in my Micro-T and its even more insane then before.

If I punch it from a dead stop the truck will do an instant back flip. I can wheelie all day long for the entire pack. I raced against a stock truck today and the differences are staggering. The same LiPo in a stock Micro-T is equally impressive, its like a micro missile.

If anyone has tried a LiPo pack and not experienced insane power and speed then I can only conclude the pack just isn't of good quality.

I will have some video soon.
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