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Old 11-06-2013, 05:21 PM   #646
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Originally Posted by mrjudd77 View Post
There are some really good motors and esc's on HobbyKing that would allow you to get some other stuff as well for that sort of budget
you can also go the hobby king rout too. Good luck though if you have any problems with it.
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Old 11-09-2013, 04:15 PM   #647
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Thumbs up FDR CALCULATOR LINK

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Originally Posted by WaftyCrank View Post
No probs.

Can anyone recall the FDR calculator mentioned in this thread? I know the one linked had a incorrect internal ratio which should be 2.13 (like the rs4) but I can't seem to find it. I thought it was on http://www.gearchart.com/index.cfm but couldn't find any HPI listed anymore.

Am I losing it or has it changed?

2.13 is the majik number for the S2 -

FDR Calculator is here =

HPI Sprint 2 Mods - Making a silk purse from a sow's ear.

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Old 11-10-2013, 03:17 AM   #648
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Cheers Marv =)
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Old 11-11-2013, 05:40 PM   #649
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Originally Posted by ThePanda View Post
It's plenty for drifting. On the ae website you can get the lrp drift ultimo motor and esc for about 90 bucks. I would rather have that.
Picked up the Novak Drift spec combo. Very very smooth and instant control. I'm very happy with it. I can feel the difference in controllability - what a difference.
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Old 11-11-2013, 05:53 PM   #650
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Here is my sprint 2 Drift! I've been into rc cars since the late 80's. I wish I had this car back then!

Did a bit of customization to it. Ripped of the stickers, added CF stickers, mirrors, wipers, dual exhaust, intercooler, and wing.

For electronics I put in a Futaba 2.4 and high speed RX, a fast .06 second Futaba 9254 steering servo and a Novak Drift Spec ESC/motor combo. Still running NiMh batteries but I get an hour of run time since putting in the Novak.

Also dropped in a front One-Way and cut away some plastic to get more steering angle.

Next is lights and I'm locking the rear diff.

Do they make a spool, or do I need to put in the wheelie king diff locker?

I love this thing!
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HPI Sprint 2 Mods - Making a silk purse from a sow's ear.-image.jpg  

Last edited by Mike2112; 11-11-2013 at 06:08 PM.
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Old 11-13-2013, 06:44 AM   #651
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NICE car Mike2112!

Here's a link to a quick, clean way to lock the rear diff =


HPI Sprint 2 Mods - Making a silk purse from a sow's ear.

Last edited by Marv; 11-13-2013 at 06:51 PM.
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Old 11-15-2013, 08:36 AM   #652
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Thumbs up Thanks, Marv!

Thanks for all your work here, Marv. You were key to my decision to get the Sprint 2. I must have read this entire thread 4 or 5 times before I pulled the trigger. I've done several of your mods successfully, with just a few minor changes here or there.

I had a Traxxas Stampede with a Castle 7700kv motor in it that I was seriously wanting to down-grade, so as soon as I got the Sprint, I pulled the power system and swapped it with my Stampede.

I hit 65 mph last night on a 2s pack on its first run. The ESC hit thermal shutdown after 6 minutes of speed runs...it still works on the bench, but it sure does stink!! I'll have to take my GoPro out and get some video.

Thanks again!
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Old 11-15-2013, 08:44 AM   #653
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Old 11-16-2013, 08:18 AM   #654
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Mod Pics:
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HPI Sprint 2 Mods - Making a silk purse from a sow's ear.-wp_20131115_003.jpg   HPI Sprint 2 Mods - Making a silk purse from a sow's ear.-wp_20131115_004.jpg   HPI Sprint 2 Mods - Making a silk purse from a sow's ear.-wp_20131115_005.jpg   HPI Sprint 2 Mods - Making a silk purse from a sow's ear.-wp_20131115_006.jpg   HPI Sprint 2 Mods - Making a silk purse from a sow's ear.-wp_20131115_007.jpg  

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Old 11-16-2013, 08:20 AM   #655
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More mod pics:
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HPI Sprint 2 Mods - Making a silk purse from a sow's ear.-wp_20131115_008.jpg   HPI Sprint 2 Mods - Making a silk purse from a sow's ear.-wp_20131115_009.jpg   HPI Sprint 2 Mods - Making a silk purse from a sow's ear.-wp_20131115_010.jpg   HPI Sprint 2 Mods - Making a silk purse from a sow's ear.-wp_20131115_013.jpg   HPI Sprint 2 Mods - Making a silk purse from a sow's ear.-wp_20131115_014.jpg  

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Old 11-16-2013, 08:22 AM   #656
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More mods:
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Old 11-16-2013, 08:33 AM   #657
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Default List of mods:

Mods:

cv drive axles
front belt tensioner - bushing to bearing + bigger bearing for more adjustment
rear belt tensioner added - running on bearings
aluminum axle hex hubs
battery tray modified
CC Mamba 7700 system installed
capacitor on receiver
shocks moved in one hole on control arms/lifted a bit for street bashing
front body posts raised one hole and body slightly trimmed along road area
Steering servo changed to Turnigy TGY-4409MD
RPM ball ends added throughout steering linkage; all balls sanded down to fit, no slop
driver's side turnbuckle shaft replaced with bolt and locknuts to eliminate slop
Traxxas shims on all axles to remove slop
78t spur, 34 tooth pinion (stock=90t spur, 23t pinion)
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Old 11-18-2013, 04:37 PM   #658
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Default 69 mph

Radar clocked at 69 mph tonight...I'm so tempted to throw 3s in it for one run...magic smoke be damned!!!
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Old 11-19-2013, 04:56 PM   #659
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69 mph?! That's insane. I think mine tops out at a blazing 16 mph! Drift baby! Smooth as butter now, but slow as hell. Another pic for good measure!

I wanna lose the "Head light stickers" and drop in light buckets...anyone know if they make ones ready to install for this car? Or do i need to get the lexan ones and cut and paint them? I think my second option would be to add "tint-shaped" stickers instead. OR remove the white paint and spray tint them back on. Any thoughts?
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Old 11-19-2013, 05:22 PM   #660
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is the body sprayed whited behind those headlight decals? If so, buckets will never look good.
There are light buckets for the 350Z. HPI offers them with the 350Z bodies. They are clear lexan. You can probably find some chrome buckets from Yokomo or Tamiya maybe, but they probably won't fit/look perfect like the HPI pieces.
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