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Old 10-29-2011, 09:26 AM   #1
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Default 100 mph break with my Kyosho Gt

Hy ( sorry for my very very bad english , i'm french )

My name is Yoann and i want break 100 mph with my kyosho GT 1/8

My best speed to date is 83 mph with this setup :

MMM 2200kv
5S 5000mah 45C
Xtra Soft GRP Rally Tires
pinion 30 /spur gear 44 ( mod 1)


Front diff oil 80 000 / center 100 000 / back 30 000

ESC
Timing is on Highest ( max )
Brake is at 30%
Cutoff Voltage: Auto LiPo
Punch no limited
Drag Brake 20%

radio system 2,4Ghz

The car is very stable in my runs but the speed is no good ...

My timing is bad ? my gears are they bad ? or there is something else?

Thanks for reading, and I appreciate any help that anyone can give .

Good luck


PS : this forum is amazing !!!!!
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Old 10-29-2011, 10:20 AM   #2
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Bump it up to a 6s lipo , watch your temps and you should break 100mph easy , also I'd turn off drag brake it creates excess heat.
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Old 10-29-2011, 11:17 AM   #3
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Bump it up to a 6s lipo , watch your temps and you should break 100mph easy , also I'd turn off drag brake it creates excess heat.
ok thank you! I will disable the drag brake.
I also bought a nano-tech Turnigy 6S 5000mAh 90C Lipo ~ 45, I hope it will go!

Timing is on Highest ( 20 ) or pinion 30 /spur gear 44 ( mod 1) it is a good setting ?
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Old 10-29-2011, 11:54 AM   #4
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It's a bit aggressive but just watch your temps on everything and you should be fine to break the 100mph . That 6s should get you there.
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Old 10-29-2011, 12:12 PM   #5
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It's a bit aggressive but just watch your temps on everything and you should be fine to break the 100mph . That 6s should get you there.
ok, I'll move the timing in normal (10)

for speed run , lock center diff it is a good idea ?
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Old 10-30-2011, 12:47 AM   #6
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Originally Posted by pixelus_973 View Post
ok, I'll move the timing in normal (10)

for speed run , lock center diff it is a good idea ?
I would try to lighten the drive train as much as possible to,
Center spool, you dont need a diff for speed runs.
Kyosho has the titanium diff pins -http://www.igthobbies.com/KYOSHO-KYOVZW211-TITANIUM-DIFFERENTIAL-SHAFTS_p_1655.html
I am not sure what body your running but I would look for the most aerodynamic as possible
http://www.igthobbies.com/GT1-BODIES_c_203.html
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Old 10-30-2011, 06:01 AM   #7
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Yep, before everything else, I'd considering optimizing the aerodynamics first. The speed record breakers usually run a custom made body, so you might wanna look into researching vacuum molding.
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Old 10-30-2011, 01:10 PM   #8
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thank you for having responded to me

my diameter of tires is 95mm
my internal gear ratio is 43/13
and i run to 300m

my body is a Protoform PF8-GT

THANK FOR YOUR HELP NIC YOU ARE THE BEST
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Old 10-30-2011, 01:16 PM   #9
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While it is not recommended by Castle I know of a few people who use the 2650KV motor on 6s for speed runs. Aredynamics is aslo a good idea to look into.
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Old 10-30-2011, 01:23 PM   #10
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my motor is a 2200kv and not a 2650kv

The 2200 is built to run in 6S
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Old 11-01-2011, 05:27 AM   #11
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one other thing, turn off lipo cutoff. you should be making only a couple runs at a time. you will pick up speed . I do alot of speed running with 1/10th scale.
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Old 11-02-2011, 09:42 AM   #12
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one other thing, turn off lipo cutoff. you should be making only a couple runs at a time. you will pick up speed . I do alot of speed running with 1/10th scale.
thank for this tips !

I also drag my cancel drag break and got my timing at 0 .

my maximum speed to 5S is 130kmh ( 80 mph )
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