Tiger.T's Sakura D3 - 3.45 CS Carpet Setup

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Tiger.T
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Drift Chassis: ABC Hobby Genetic / Sakura D3 CS
Location: Fort Lauderdale, FL

Tiger.T's Sakura D3 - 3.45 CS Carpet Setup

Postby Tiger.T » Sat Jan 25, 2014 3:05 pm

Brand: 3 Racing
Model: D3 CS Sport
- motor/ESC: Tenshock X211 13.5 / Speed Passion Reventon R
- Pinion: 40 - 64 pitch
- Spur: 96 - 64 pitch
- pneus:RC Art Derive RT01 H (Front/Rear)
- Others: Blutooth unit, Savox 1251 Low PRofile Servo
- Batteries: Tenshock 4000mah 40C Shorty pack

FRONT:
- camber: -4
- Toe: +1
- caster: +6
- Shock Pre-Load: 4mm
- oil: Team Associated 10Wt
- Springs: 3 Racing orange
- Front bumper weight: magnet mount
- differential: Front one way
- Droop: 3mm
- Other: Hubless conversion with Active Hobby arms and triangulated uppers

REAR:
- Camber: -7
- Toe: +1 degré (RR+10)
- Pre-Load: none
- oil: Team Associated 35Wt
- Springs: MST DK spring super soft
- Weight :None
- differential: Spool
- Droop: 7/8mm

PULLEYS COMBINATION:
- Front Diff: 38 T
- Front Input Shaft: 12 T on Diff side/ 14 T on Spur side
- Center Input Shaft: 12 T Spur side/ 28 T on diff side
- Rear Diff: 30 T

OTHER NOTES:
Front and Center stock belts, Front belt with light slop, Center belt needs tensioner, Rear belt is Xray 305446 189mm belt. Fully hopped-up chassis with plastic stock knuckles
Knuckle drilled 6/7mm closer to wheel. Battery in the length of the chassis. All electronics placed under the upper deck between the front bulkhead and the battery. Servo facing up with Active Hobby Servo Strut Mount. Active Hobby Pulley Shaft,65 degrees Active Hobby CVDs

Photos coming soon

MrAkhtar86
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Re: Tiger.T's Sakura D3 - 3.45 CS Carpet Setup

Postby MrAkhtar86 » Sat Jan 25, 2014 4:16 pm

If you're running such a high CS, would not be better to go RWD? Don't get me wrong, I'm impressed, compared to my 1.8CS, 3.45 must be pretty much RWD like

Sent from my GT-I9300 using Tapatalk

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Stalwart
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Re: Tiger.T's Sakura D3 - 3.45 CS Carpet Setup

Postby Stalwart » Sun Jan 26, 2014 11:20 am

MrAkhtar86 wrote:If you're running such a high CS, would not be better to go RWD? Don't get me wrong, I'm impressed, compared to my 1.8CS, 3.45 must be pretty much RWD like

If my calculations are correct, that setup barely moves. :Ono

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Tiger.T
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Drift Chassis: ABC Hobby Genetic / Sakura D3 CS
Location: Fort Lauderdale, FL

Re: Tiger.T's Sakura D3 - 3.45 CS Carpet Setup

Postby Tiger.T » Sun Jan 26, 2014 7:16 pm

hmmm not sure what you are talking about Stalwart but it moves perfectly fine.
Keeping up (if not faster) with my MST friends running 10.5 @ 1.8CS.
I will post a video later on so you guys can get an idea.
I do need to re-gear the car though as my FDR is too high.
As far as being RWD it's nothing like it. I drove a 3.88CS Sakura D3 and was amazed how easy it was to drive. So far my friends tried my chassis and were surprised of how relatively easy it was for them to drive it despite their expectation of it being too much CS.
I'm not ready to make the RWD jump yet :roll:

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Re: Tiger.T's Sakura D3 - 3.45 CS Carpet Setup

Postby Stalwart » Mon Jan 27, 2014 12:46 am

Tiger.T wrote:I do need to re-gear the car though as my FDR is too high.

Too low, actually. 2.2 will barely fit a 30T crawler motor, but 13.5T must have a hard time trying to spin the wheels.

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Tiger.T
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Drift Chassis: ABC Hobby Genetic / Sakura D3 CS
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Re: Tiger.T's Sakura D3 - 3.45 CS Carpet Setup

Postby Tiger.T » Mon Jan 27, 2014 11:40 am

Stalwart wrote:
Tiger.T wrote:I do need to re-gear the car though as my FDR is too high.

Too low, actually. 2.2 will barely fit a 30T crawler motor, but 13.5T must have a hard time trying to spin the wheels.

Not sure how you calculate FDR but according to the DriftMission Calculator, my FDR is at 8.28. Not 2.2?
Unless their tool is corrupted, I should bring it back to no higher than 6, so I am too high.
The FDR for a 13.5 should be between 5.5/6.0 while a 10.5 should be around 6.0/6.5.
How do you calculate your ratios?

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Re: Tiger.T's Sakura D3 - 3.45 CS Carpet Setup

Postby Stalwart » Mon Jan 27, 2014 1:04 pm

Tiger.T wrote:Not sure how you calculate FDR but according to the DriftMission Calculator, my FDR is at 8.28. Not 2.2?
Unless their tool is corrupted, I should bring it back to no higher than 6, so I am too high.

You could roll a dice and get more sensible result than from a DM calculator. :mrgreen:

Tiger.T wrote:How do you calculate your ratios?

For oneway-equipped CS drivetrain you should calculate rear axle FDR, and in case of D3 - take ratio of middle belt into account too.

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Tiger.T
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Drift Chassis: ABC Hobby Genetic / Sakura D3 CS
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Re: Tiger.T's Sakura D3 - 3.45 CS Carpet Setup

Postby Tiger.T » Mon Jan 27, 2014 1:58 pm

Ok I finally found out how you got your 2.2
(Calcs are always "Driven Gear : Driving Gear") So my transmission (rear axle only) = (12:14)x(30:28)=0.917
Now my gear ratio is "Spur : Pinion" so 96:40= 2.4
Final Drive Ratio 2.4 x 0.917 = 2.2
Now why do you not take in consideration your front axle in the equation? My setup isn't RWD

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Re: Tiger.T's Sakura D3 - 3.45 CS Carpet Setup

Postby Stalwart » Mon Jan 27, 2014 4:15 pm

Tiger.T wrote:Now why do you not take in consideration your front axle in the equation? My setup isn't RWD

Short answer:
While developing my iOS app, i did a pretty extensive research, and even consulted Yokomo factory drivers. None of the respectable sources take front axle into FDR calculations. Yokomo manuals have FDR charts on last pages of SD, DRB, DIB, DPM manuals - they're for rear FDR.

Long answer:
If you think about it, front axle never really strains the motor, and its impact is reverse proportional to CS ratio. When accelerating with CS and oneway, only rear wheels resist, front axle coasts. When you break traction on the rear axle, some of the resistance finally occurs on largely underdriven front axle, but weight is shifted backwards, and all front axle does is gives some directional stability. When you break traction on all four wheels, resistance actually drops, and underdriven front axle matters even less. When braking with oneway equipped, again, front axle gives no resistance whatsoever.

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Tiger.T
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Posts: 29
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Drift Chassis: ABC Hobby Genetic / Sakura D3 CS
Location: Fort Lauderdale, FL

Re: Tiger.T's Sakura D3 - 3.45 CS Carpet Setup

Postby Tiger.T » Mon Jan 27, 2014 7:18 pm

I follow you now.
Damn, so I had it totally wrong from day one lol


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