72kph (45mph) on 4 cells……

This topic has 19 replies, 10 voices, and was last updated 18 years, 3 months ago by peteWah.

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- February 23, 2005 at 8:07 pm #12566
  ph2t
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  Posts: 2088
  and here s a vid, 2MB, in divx format, http://www.divx.com.
  
  http://www.woahnelly.com/stuff/mr02/plasma_run.avi
  
  enjoy,
  
  ph2t.
- February 23, 2005 at 9:12 pm #58657
  betty.k
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  Posts: 2487
  HAHAHAHAHAHAHAHAHAHAHAHA!!!:D
  
  all you lipo usin’ 6 cell freaks can stick THAT in ya pipe and smoke it!!:approve::8ball:
- February 23, 2005 at 11:23 pm #58660
  TallduDe
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  Posts: 1430
  not bad old boy not bad at all.
  
  :smiley16:
- February 24, 2005 at 2:54 am #58665
  merc-blue
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  Posts: 1547
  hey ph2t can i chuck my 1:10 on one of them speed checkers? .. i wonder if they get into 200 lol
- February 24, 2005 at 2:14 pm #58672
  kevsta
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  Posts: 974
  Good stuff !
  
  Nice to see that you don’t get blinded by a flying tyre.
- February 24, 2005 at 3:13 pm #58675
  ph2t
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  Posts: 2088
  gandini racing foams mate, they’re the best, you can get ’em here, at the shop.
  
  ph2t.
- February 24, 2005 at 3:31 pm #58676
  merc-blue
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  Posts: 1547
  hmmm im tempted to get a xmod and drop in a mamba BL.. u recon the drivetrain is up to it pht.. with them kick ass foams and some alloy in there?
- February 25, 2005 at 5:08 pm #58691
  Charlie Brown
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  Posts: 105
  cool stuff…You said that you’re using a 3×2 stack of IRF7317’s, but in the vid, I see those trademark rainbow wires and that plug for the motor wires…Something you hiding from us? 😯
- February 25, 2005 at 8:37 pm #58696
  betty.k
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  Posts: 2487
  it’s a triple stack, just external. it’s to be used to repair a z pcb that was mutilated by it’s owner. mounting the stacks externally is the only option for the pcb in question:8ball:
- March 2, 2005 at 3:38 am #58750
  z-beam
  Participant
  Posts: 2265
  now wheres that fastest z in the world thread again:smiley2:
  
  congrats on that! awesome effort!
- March 4, 2005 at 7:26 pm #58768
  Aaron
  Keymaster
  Posts: 2146
  All I can say is – Go the Might IRF7317s 🙂
  
  Then again once “StepFET” ™ hits the streets we’ll have a some crazy numbers from all internal mods….
  
  A.
  
  --
  Site Owner Guy.
- March 5, 2005 at 7:43 am #58774
  jamiekulhanek
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  Posts: 2563
  ??? StepFET????
- March 14, 2005 at 6:38 am #58898
  Charlie Brown
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  Posts: 105
  lol, ph2t…I remember once that you used an Xray M18 16T pinion gear in your Madforce…assuming that this gear is the same gear pitch as that, and that the Madforce and Mini-Z Racers have the same gear pitch, you could probably go insane on the Tamiya Speed Checker and use this (along with an Overland Ball Differential):
  
  http://www.rcmart.com/catalog/product_info.php?cPath=144_507_546&products_id=12410
  
  😯 That’d sacrifice a lot of torque, but with Nelly…:dead:
- March 15, 2005 at 5:40 am #58925
  z-beam
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  Posts: 2265
  maybe this “stepfet” is Aarons alternative to the fetstack…
- March 25, 2005 at 11:40 pm #59084
  ph2t
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  Posts: 2088
  yeah, Aaron has a more balanced approach to the whole mosfet thing. he’s going for compact install(possibly on the pcb?) yet still achieve a lower “on resistance” in the mosfets. This is what gives you more power. I’m interested to see what he comes out with in the end. 🙂
  
  charlie. yeah, it’s been proven before that 1:18 scale motor pinions are compatible with the 130 sized motors. That 20t would definately top a 100kph I reakon, but an example is all it would be. In reality it would have no balls…
  
  cheers,
  
  ph2t.
  
  Edited by – ph2t on 25 March 2005 18:42:34
- April 1, 2005 at 8:19 pm #59151
  Aaron
  Keymaster
  Posts: 2146
  ph2t is right StepFET(tm) mounts to the PCB and is looking like being smaller than a 3×2 stack in physical size with the performance (in resistive terms) of about a 7×2 stack…. Note I say resistive, not outright current which is still good but until we finish testing it’s hard to say were it lies with motor choice.
  
  Throttle response is excellent and smooth/progressive… much like a 2×2 and not with some of the ‘lagginess’ seen in larger stacks.
  
  In short… think a tiny Nelly type setup built inside the chassis.
  
  A.
  
  --
  Site Owner Guy.
- January 6, 2006 at 7:14 pm #59781
  peteWah
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  Posts: 1020
  99kph on a speed checker with 4 cells, Beat That :p:smiley2:
  
  A 01 with 2×4 stack of 7317 s with a iWaver X speed pro which has the spiral armature in it which is a fatboy armature
  me thinks….
  
  We tested this motor on a Much More motor thingy and it clocked out at over 60.000 rpm and im not sure on the exact figures that go with it….
- January 6, 2006 at 7:19 pm #59783
  Aaron
  Keymaster
  Posts: 2146
  As a note too – StepFET is gone and done with. Instead Spider2 has been designed to be mounted inside a MR01 chassis. Now thats a trick thing 🙂
  
  A.
  
  --
  Site Owner Guy.
- January 10, 2006 at 5:41 am #59794
  jamiekulhanek
  Participant
  Posts: 2563
  Quote:
  
  peteWah wrote:
  
  99kph on a speed checker with 4 cells, Beat That :p A 01 with 2×4 stack of 7317 ‘s with a iWaver X speed pro which has the spiral armature in it which is a fatboy armature me thinks…. We tested this motor on a Much More motor thingy and it clocked out at over 60.000 rpm and im not sure on the exact figures that go with it….
  
  pics/video/info???
- January 10, 2006 at 6:26 pm #59796
  peteWah
  Participant
  Posts: 1020
  Jamie i have to get some more parts before i can set it up like that again…
  
  You no im not a tech head…
  
  I do however have a pict on my phone just showing the 99kph.
  
  I can get the motor tested on the dyno again and get video.
  
  Do you still have a s**t hot Z or not…
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