Limitless Post yor build, no rocket science

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kaiserbasher

Active Member
Messages
45
Reaction score
66
Location
Austria
Arrma RC's
  1. Limitless
  2. Typhon 6s
Dear Speedrunners,
i'm happy and for sure a bit proud to tell you my story.

Starting as a RC newbee again in 2020, cought by the speed run hype on yt. Spent alot of money, failed alot, spent more, failed more ... but i reached my goal. Acually im an experianced Modellbauer, just had a break of 20years :)

What i want to say, do not keep your seccrets, we don't do rocket science. I see a lot of people making a "mystery" out of their build ... afraid of i am faster???

If you want to know how i made my 247km, i will post my setups and modifications.
I also want to show you where i run my cars, zero harm guys please. I know we speedrunners are crazy but please minimize risk!

stay healthy and share

Hellboy
Platform: Limitless
MAX6
EZRUN 4985 (1650kv)
34/29
Removed all wings
Droop Screws at MAX (~2mm?, not sure)
Rear and Front Shocks at MAX
Sttd Limitless Body opened at front for cooling (can send pic if needed)

Speed: 247kmh

Murphy
Platform: Limitless
XLX2
TP4070 (220kv)
34/27
CRCU Titanium shafts
seven65 Body
Understeering plates, self made (Polycarbonat)
Launch control: self made, based on attyny, i share sourcecode if you want

Speed: i don't know yet :)
 
Kyosho gt2
flier 400amp
tpscm4070 5900kv
24 pinion/ 40 spur
carbon rear driveshaft(custom)
grps
122mph and drove back
did a 123 and blew the rear diff
spider gears for the rear on the way and a spool for the center after it breaks.
I’m only replacing parts as needed.
75660FBE-AB39-407E-88EB-E8DD0F51EB1A.jpeg
9D3856EE-AB5E-428C-810B-770B2D0693BE.jpeg
B366D24B-D4BD-4693-B47B-8A036EC61E4A.png
 
Dear Speedrunners,
i'm happy and for sure a bit proud to tell you my story.

Starting as a RC newbee again in 2020, cought by the speed run hype on yt. Spent alot of money, failed alot, spent more, failed more ... but i reached my goal. Acually im an experianced Modellbauer, just had a break of 20years :)

What i want to say, do not keep your seccrets, we don't do rocket science. I see a lot of people making a "mystery" out of their build ... afraid of i am faster???

If you want to know how i made my 247km, i will post my setups and modifications.
I also want to show you where i run my cars, zero harm guys please. I know we speedrunners are crazy but please minimize risk!

stay healthy and share

Hellboy
Platform: Limitless
MAX6
EZRUN 4985 (1650kv)
34/29
Removed all wings
Droop Screws at MAX (~2mm?, not sure)
Rear and Front Shocks at MAX
Sttd Limitless Body opened at front for cooling (can send pic if needed)

Speed: 247kmh

Murphy
Platform: Limitless
XLX2
TP4070 (220kv)
34/27
CRCU Titanium shafts
seven65 Body
Understeering plates, self made (Polycarbonat)
Launch control: self made, based on attyny, i share sourcecode if you want

Speed: i don't know yet :)
Wow, you did 153mph in limitless with a max6?
If do, well done.
Must be a record
Kyosho gt2
flier 400amp
tpscm4070 5900kv
24 pinion/ 40 spur
carbon rear driveshaft(custom)
grps
122mph and drove back
did a 123 and blew the rear diff
spider gears for the rear on the way and a spool for the center after it breaks.
I’m only replacing parts as needed.
View attachment 183121View attachment 183122View attachment 183123
Very interested in this motor.
I tbink this could be my next motor for sure.
Im looking forward to see how you progress.
 
Wow, you did 153mph in limitless with a max6?
If do, well done.
Must be a record
Never seen a Max6 go that fast either due to hobby wings amperage limiting they rarely go above 120 mph (193 kph).
Heard of one guy who found a way to remove the amp limiting, but he took that secret to his grave.

It seems I only build the cars and rarely get the chance to speed run at high speeds.

My only high speed was 119 mph at 94% throttle (had a lot more in it)
Typhon 6s
MMX8s ESC
2 CNHL 6000 mAh 4s 70c packs. (making 8s voltage)
BLX2050kv motor
34t spur 29t pinion
3.3 ratio diffs
GRP GTJ S1 tires
Custom body

20200408_102220.jpg


Limitless 2s speed runner
86 mph PB (138 kph)
MMX8s ESC
2.8 diffs
2x SMC True spec extreme 6400mAh 2s packs in parallel for 2s voltage
34t spur 37t pinion
TP4050 (3817kv)
GRP GTJ S1 tires
No front wings
Trimmed rear wing.

This car also had more in it (low 90mph range), but I lost interest.
 
Rear housing and diff completely destroyed on the last run. Waiting on new diff case and spider diff before i try again. I will gain speed with a spool but it haven’t broken the stock center diff yet.👍
image.jpg
 
Last edited:
sry, EZRUN makes 205, i expect TP to make 247, maybe i was too enthusiastic during posting, sry for that
 
Last edited:
Rear housing and diff completely destroyed on the last run. Waiting on new diff case and spider diff before i try again. I will gain speed with a spool but it haven’t broken the stock center diff yet.👍View attachment 183276

I wonder if the diff pinion gear is being pushed by the dogbone/carbon shaft? That looks like a very tight fit based on the dog bone pin, but maybe it has room to slide forward also.
 
Stock limitless with:
- 160A Spektrum ESC
- 2050kv Spektrum motor
- 27t pinion and 39t spool
- (2) 4S 5000mAh gplus CHNL
- Perfect Pass
- Radiolink RC6 transmitter

- 113mph (crashed but still drove it back after I flipped it - video of crash:
)
- 111mph (good run)
DF98D01B-DFEB-4CF8-935C-C05623ED9F9D.png

96FF2FB1-D47D-4BEB-9781-022C0945F32C.jpeg


109mph with 46t infraction spur (1mill wt) and 27t pinion
8A3C1933-9A9F-4D8E-BEFB-328676F69AA9.png
 
I can relate with you on spend/fail/spend/fail cycle. The failures are costly but lessons learned enable a progressive build that keeps improving.
Build 1-6s Max 6/BLX2050 stock gearing.
20210312_081520.jpg
and its result(first run and hit head on by Kraton)
20210508_171013.jpg

Build 2-8s EXB Max6/HW1650, 34/40
20210822_214922.jpg

And its resulting brownout:
20210831_235759.jpg

Gonna try some ice runs with spiked tires and have a new idea to use this platform, minus stock body, to try and hit 150mph.

20210508_171013.jpg
 
20211211_120639.jpg


Limitless Roller
Amazon cheapo cordless servo
XLX2 800KV 2028 Combo
Radiolink R7FG
Diversity antenna mount
SRC Carbon large mount plate
Basherqueen Carbon splitter
(2x) 4S Turnigy Graphene Pather 6000mah
White 100mm Hoons, balanced
Hot Racing center diff carrier and cap
PPS V1 motor mount
Flopack Pinocchio Spool

Hasn't been run since XLX2 combo was installed.

Fastest was 117mph on a MMX8S while having range issues with the Radiolink keeping me on really short runs. Hopefully recent configuration changes improve range.
 
@kaiserbasher
That 2200kv 4070 is a great motor, I have one in my open wheel 6s car and have reached 140mph on 6s with a best of 150 on 8s but wasnt geared for 8s on that run.

Here’s mine:
Limitless gt fc100 body
Xlx2
Tp 5680 motor
Emp mount, chassis extenders, tray
Custom esc mount
Pb 162 mph
Cnhl batteries 6000mah with smaller booster packs in parallel.
Savox servo,
no gyro or pp
Ram jam racing spool and shafts

In case anyone is wondering I had way too much battery in the car with that setup which added unnecessary weight and it was killing my bearings
D1476473-D147-4653-AC92-B165977F7FBB.jpeg
CA6B0E4A-499C-4E1F-AB11-F043A38F294B.jpeg
 
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