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How To Build Shock Absorbers
The oil filled shock absorbers found in rc cars and trucks are very important. A properly built shock absorber will make an rc car handle well, while a poorly assembled shock absorber will make a remote control car handle erratically.
Here are some tips for building smooth shock absorbers.
First is to use "Green Slime" to lubricate the rubber shock seals. This will also create a seal that will minimize oil leaks. This also reduces the friction between the shaft and rubber seals, giving a smooth feeling.
A common mistake is to grab the shock shaft with metal pliers. This will cause scratches on the shaft resulting in oil leaks. Protect the shaft by wrapping a piece of rubber between the shaft and the pliers.
Other tips for building a smooth shock absorber is to make sure to "bleed" the shocks properly. This means you try to remove air bubbles trapped in the oil inside the shock absorber. Also use high quality silicon oil (e.g. Associated, Losi, Tamiya). These oils provide the consistency and correct thickness (WT) for specific rc car setups.
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