Hyper 9 2.0 Tuning Tips

Aug 16, 2010 No Comments by

Front End

 
Front Upper Shock Location

  • Start at the #3 position with blue spring for 14mm shocks or gray springs for 17mm shocks. For more steering, move location in, for less move out.

Inner Upper Arm Location

  • Use the lower pin location #2 for most tracks. The upper position #1 is rarely only used on very tight slow tracks and will make buggy over sensitive on most tracks.

Outer Upper Arm Location

  • Use outer location #2 on loose low traction tracks. Use inner location #1 for high bite fast tracks.

Ackerman Bar

  • We use the medium bar 70% of the time. The long bar will give the buggy more steering and the short bar less steering. You have to be careful, because to much steering might feel faster, but will scrub off speed and accually slow you down.

Camber

  • Zero Degrees for maximum steering. Move camber in for less steering (no, this is not a typo).

Caster

  • There is only one caster block at 20 degrees total. 22 was to much. 18 was not enough. 20 was just right.

Front Sway Bar

  • The kit comes with a 2.4mm bar. I like a smaller 2.2mm or 2.0mm. You can also grind a flat section in the center of the to soften it. I like to grind a little at a time for fine adjustments until it’s just right.

Front Toe

  • Run 1 to 2 degree toe out so that buggy is stable at high speeds. More toe out will make the buggy more stable, but will loose steering.

Front Shocks (14mm)

  • Drill 2 of the 4 holes out to 1.4mm.
  • 37.5wt Shock Oil
  • Blue 14mm Spring
  • Set preload so that front arms are level to ground.

Front Shocks (17mm)

  • Stock piston hole is 1.4mm. Drill out 3 piston holes to 1.5mm and 3 holes to 1.6mm.
  • 35wt Shock Oil
  • Gray 17mm Spring (Blue 17mm spring if you need more steering)
  • Set preload so that front arms are level to ground.

 

Rear End

Rear Upper Shock Location

  • Start at the #3 position with blue springs for both 14mm and 17mm shocks. For more steering, move location out, for less move in.

Lower Shock Location

  • Use outer location #2.

Inner Upper Arm Location

  • Use position #1 for most tracks. Use inner positions 1 & 3 for low traction tracks and 2 & 4 for high traction tracks. Use upper locations for less steering and lower locations for more steering.

Outer Upper Arm Location

  • Use position # 1 for most tracks. Use inner positions 1 & 3 for high traction tracks and 2 & 4 for low traction tracks. Use upper locations for more steering and lower locations for less steering.

Hub Pin Location

  • Use position #2 for most tracks. Position #1 has less steering, positions #2 has more. Note: if buggy is traction rolling or flipping on extremely rough tracks, use position #1.

Camber

  • Use -2 degree on low traction tracks and -3 degrees on high traction tracks.

Rear Sway Bar

  • The kit comes with a 2.8mm bar which is to thick. Use a smaller 2.6mm or a 2.4mm if buggy is to loose. You can also grind a flat section in the center of the to soften it. I like to grind a little at a time until it’s just right.

Rear Shocks (14mm)

  • Drill all 4 holes out to 1.4mm
  • 35wt Shock Oil
  • Blue Spring
  • Set preload so that dog bones are level to ground.

Rear Shocks (17mm)

  • New pistons have 1.45 mm holes. Drill two more 1.45mm holes for a total of 8 1.45mm holes
  • 30wt Shock Oil
  • Blue Spring
  • Set preload so that dog bones are level to ground.

 

Rear Toe-In and Anti-Squat

Rear Anti-Squat

  • Use 2 degree (#2) on most tracks. If rear of buggy is hopping on extremely rough tracks during acceleration, use 1 degree (#1) anti-squat (when using 1 deg., the buggy will have less jumping distance). Use 3 degree (#3) if you need more jumping distance on very smooth tracks (when using 3 deg., the buggy will be very choppy in rough sections and we rarely ever use it).

Rear Toe-In

  • Use 3 degree on most tracks. Using less rear toe-in will allow the buggy to rotate more through the center of the corners.

 

Differentials
Front Differential·         Use 5,000 wt for almost all tracks. Thicker oil will increase on power steering. Thinner will increase off power steering.Center Differential·         Use 5,000 wt for most tracks. Thicker will increase on power steering and decrease off power steering. Thinner will decrease on power steering and increase off power steering.Rear Differential·         Use 3,000 wt for most tracks. Thicker will increase rotation out of the corner and increase straight line stability.
Ride Height and Droop
Front End·         Start with the front dog bones a little up from level and 50 mm of droop (measured from the bottom of the chassis to the table top). If you need a little more on power traction, raise the front a little and increase the front droop.Rear End·         Start with the rear dog bones level to the table top and 55 mm of droop (measured from the bottom of the chassis to the table top).Droop·         Start with 50 mm in the front and 55 mm in the rear measuring from the bottom of the chassis down to the table surface. When track conditions get rough, try limiting the droop so the tires skip across the holes instead of falling in and upsetting the handling.
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