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Re: Battery Buggy B
Posted: May 1st, 2018, 11:48 am
by MadCow2357
Well then I just have to cross my fingers that the 3d printed holes come out very nicely.

Re: Battery Buggy B
Posted: May 4th, 2018, 6:57 am
by Akshu007
Has anyone tried using a sliding Potentiometer instead of a microswitch, to gradually slow down the vehicle and thus not cause any drifting? The Wingnut can push the protruding knob and reduce the voltage to the motor instead of switching off the power.
Re: Battery Buggy B
Posted: May 4th, 2018, 7:20 am
by shrewdPanther46
Clever idea, I have never tried it. The issue I see with that, is when you are gradually introducing your braking force, its not going to actually help you, it will hurt you at the very end of the run. Think about it: your car will be going faster right before the final mechanical stopper engages than if you immediately cut power, which kinda defeats the purpose.
Re: Battery Buggy B
Posted: May 4th, 2018, 9:07 am
by Akshu007
The Potentiometer will gradually reduce the electrical Power, and should only slightly increase the braking force. Since this is a slide Potentiometer, the arm of the wingnut can be positioned to hit the Potentiometer when the vehicle speed needs to be reduced.
https://www.amazon.com/BOURNS-PTA6043-2 ... 00L9YE2ZA/
Re: Battery Buggy B
Posted: May 8th, 2018, 6:48 pm
by M017
I've been trying to work out a formula for my car. I found the degrees of turning per cm, and multiplied it by the cm that I want then divide by 360, I used the degrees/cm based off of a .2mm off 12m run, but if I use that for a 9m run, it comes up 45cm short? Any ideas why
Re: Battery Buggy B
Posted: May 8th, 2018, 9:14 pm
by cheese
any tiny error in your calculation could have easily multiplied so you have to make sure your numbers are exact.
Re: Battery Buggy B
Posted: May 8th, 2018, 9:18 pm
by PM2017
cheese wrote:any tiny error in your calculation could have easily multiplied so you have to make sure your numbers are exact.
Also, calculate all the true values experimentally. Each part has some tolerance, and these build up, and make your theoretical calculations inaccurate.
Re: Battery Buggy B
Posted: May 23rd, 2018, 4:18 am
by MadCow2357
I'd like to implement adjustable steering in my buggy for next year. So in the video below, Nestor revealed his secret of caliper steering.
https://www.youtube.com/watch?v=pKC8MYRgflI
Would I be able to use this kind of steering without the electronic caliper?
Re: Battery Buggy B
Posted: May 23rd, 2018, 5:53 am
by shrewdPanther46
Its the same thing as the threaded rod steering thing, its just implemented thru the pillow block instead of the entire chassis as a whole
Re: Battery Buggy B
Posted: May 23rd, 2018, 7:57 am
by bernard
MadCow2357 wrote:I'd like to implement adjustable steering in my buggy for next year. So in the video below, Nestor revealed his secret of caliper steering.
https://www.youtube.com/watch?v=pKC8MYRgflI
Would I be able to use this kind of steering without the electronic caliper?
Dial calipers are not electronic.