etienne_diecast Posted November 18, 2021 Posted November 18, 2021 (edited) Hello all, decided to post here where im hoping having better luck. How can I adjust the steering so that the truck steers straight when servo retracted back? It pulls/steers slightly to the right - appreciate any and all input. Thank you! The truck model in question is similar than 9397 - picture attached Edited November 18, 2021 by etienne_diecast Quote
P McCatty Posted November 18, 2021 Posted November 18, 2021 Assuming the Servo has a perfect return-to-centre, it appears that you have a set of bevel gears for the change in direction towards the rack & pinion. If you have the Servo directly connected to the pinion you would be fine, but due to the bevel gears, your axle driving the pinion is 9 degrees offset. In a nutshell, having the Servo in that orientation requires an additional gearing stage to reverse that effect. The picture below is the quickest example I could think of since I've encountered this before. The intermediate axle is at 45 degrees and the steering axle at the rack & pinion is in sync with the Servo. Backlash is minimal. Alternatively if you're stuck with the gearing you have & you're (conveniently) using a Buwizz, you can move the steering curve up or down by a small amount to eliminate the offset. Quote
etienne_diecast Posted November 18, 2021 Author Posted November 18, 2021 (edited) 8 hours ago, P McCatty said: Assuming the Servo has a perfect return-to-centre, it appears that you have a set of bevel gears for the change in direction towards the rack & pinion. If you have the Servo directly connected to the pinion you would be fine, but due to the bevel gears, your axle driving the pinion is 9 degrees offset. In a nutshell, having the Servo in that orientation requires an additional gearing stage to reverse that effect. The picture below is the quickest example I could think of since I've encountered this before. The intermediate axle is at 45 degrees and the steering axle at the rack & pinion is in sync with the Servo. Backlash is minimal. Alternatively if you're stuck with the gearing you have & you're (conveniently) using a Buwizz, you can move the steering curve up or down by a small amount to eliminate the offset. Thank you, much appreciate the thorough response Edited November 18, 2021 by Milan Do not quote images from the same page, please. Quote
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