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Oil Viscosity Converter Guide - wt/cst Conversion

Tool Overview

This tool converts RC car damper oil viscosity between wt (weight) and cst (centistokes). Useful for comparing oils from different manufacturers that use different notation.

Main Features

  • Convert wt to cst
  • Convert cst to wt
  • Real-time conversion with slider

How to Use

wt to cst Conversion

  1. Move the left slider to your wt value
  2. The corresponding cst value appears below

cst to wt Conversion

  1. Move the right slider to your cst value
  2. The corresponding wt value appears below

Conversion Formulas

The conversion between wt and cst uses linear interpolation based on the Team Associated official chart.

wt to cst

Linear interpolation is performed between 17 data points (10-60 WT, in 2.5 increments) from the official chart.

Linear interpolation formula between data points:
cst = cst₁ + (cst₂ - cst₁) × (wt - wt₁) / (wt₂ - wt₁)

cst to wt

Reverse linear interpolation is performed between data points from the official chart.

Linear interpolation formula between data points:
wt = wt₁ + (wt₂ - wt₁) × (cst - cst₁) / (cst₂ - cst₁)

Key Data Points from Official Chart

Conversion table based on Team Associated official chart (Source: Adrenaline RC Racing):

10 WT = 100 cSt
15 WT = 150 cSt
20 WT = 200 cSt
22.5 WT = 238 cSt
25 WT = 275 cSt
27.5 WT = 313 cSt
30 WT = 350 cSt
32.5 WT = 388 cSt
35 WT = 425 cSt
37.5 WT = 463 cSt
40 WT = 500 cSt
42.5 WT = 538 cSt
45 WT = 575 cSt
47.5 WT = 613 cSt
50 WT = 640 cSt
55 WT = 725 cSt
60 WT = 800 cSt

Note: This conversion is based on the Team Associated official chart. Other manufacturers' oils may have slight variations.

FAQ

Q: What is the difference between wt and cst?

wt is a proprietary silicone oil manufacturer notation (weight-based), while cst is the international standard kinematic viscosity unit (centistokes). The same viscosity may have different wt numbers from different manufacturers.

Q: Which unit should I use?

Use the unit specified in your setup sheet or manual. When comparing oils from different manufacturers, using cst provides more accurate comparisons.

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