Steering questions

Hello everyone, newbie here but not to RC.

I have a few questions. This being my 1st attempt at 100mph I would like some input from the pro’s. I’ve only ever run an RC up to 82mph and mainly because of handling/steering issues. I’ve never used a gyro and in the past have always used just steering exponential and a slow servo with short bellcrank and servo horn arms to help slow the steering down to keep from over compensating.

I will be using a gyro with this build. My 1st question is; with a gyro what is best, a slow strong servo or a fast strong servo? I would think the quicker the better with a gyro.

2nd question is; when you are designing the steering system do you include as much steering throw as possible or do you limit the throw to a certain extent?

Thanks in advance for any input, I’m sure I’ll have a few more questions once I get farther along with the build.

A few pics. Disregard the wheels /tires and engines, they are just for mock-up at this point

Hey Snook,

I have used gyros in the past in several different cars and the faster the servo the better. I would suggest you buy a digital, metal geared, coreless servo. I have had very good luck with Futaba, HiTech and Airtronics but for my money Savox servos can't be beat.

As for steering "throw" I set my linkage up for full steering and adjust it way down (10%) with my radio for a run, then after a run I can turn the steering "throw" back up to turn the car around if needed.

Hi

Adjust the linkage so you have very little steering and adjust the throw. The stablity of the car is dependant on a couple of things. firstly you need to look at how a race car is designed to be agile and do the opposit on your car. The chassis needs to twist so it has very little torsional rigidity. This will ensure the car turns less the faster it goes.

Secondly its the aero. This only comes in above 75-80 mph and dispite what people think its very easy. The centre of gravity of the car needs to be in front of the centre of pressure. This means move the weight forward and make the front skinny and the back fat and add a wing for drag. This will give you 100mph no problem

Cheers