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200lb Crawler Servos?

200lb Crawler Servos?

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Old 03-26-2018, 11:52 AM
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Default 200lb Crawler Servos?

Hello,

For a 1:5 Crawler that weighs about 200lbs.

I was wondering if one of these servos would be enough to control the front wheels tie bar axle.

D-980TW 32-Bit, Monster Torque, Titanium Gear Servo

611 oz-in or torque(44kg/cm)

Does this mean it will basically rotate 45lbs max

So if I put one on each of the front 2 wheels to work in tandem, it will only do 90 pounds, allowing a 180lb maximum balanced weight between 4 wheels at a stand still?

I know when the crawler is in motion from the rear main motor, there is less torque required to turn but by how much specifically I dont know.

Let me know your thoughts, will 1 of these servos work, or is 2 needed, or perhaphs a different reccomendation.

Thanks
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Old 03-26-2018, 03:03 PM
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maybe a mega servo would be better.. or this..https://www.pololu.com/product/1390

if its a 200 pound car how much force would you need at 1 mph..? id say more than 200pounds..
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Old 03-26-2018, 07:18 PM
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Thanks but I found another solution is to just build or buy a gearbox.

Seach youtube video I1DU87_r95M,The Monster Torque Mod as this forum blocks urls lol

This is for a budget movie studio camera cart, cant afford the professional 100k mover setups, Thanks.
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Old 03-26-2018, 08:13 PM
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make a sled with a tracking camera.. then u can pay less..
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