Noob question thread! 2020_Summer

[b264]

@mtsmithies

I’ve been using the esk8 calculator to get some good ideas for my first build.

I understand that a higher gear ratio (from the calculator) equals more torque and lower top speed. Is there a guide to knowing what gear ratio provides enough torque for different inclines? Am I approaching this wrong…?

Should I just be trying to make my max speed the number I want with gearing and not worry about the ratio?

@dnack228

I don’t plan on going past 25mph and i’ll most likely be using for cruising, carving yk and long rides.

So basically what you want to do is make sure you remember that order of operations matters

@b264

If I could be of assistance, it would be to choose your items in a certain order. Don’t choose anything else until you’ve chosen your deck and enclosure. Because you need to know if it will even fit. Enclosures are much more difficult than you think, and you need to know if flexibility will be something you design for, or not. So go in a certain order, along the whole way making sure you choose things that are compatible with each other.

1. helmet
2. deck + enclosure (flex?)
3. battery (flex?)
4. ESC(s)
5. drivetrain & trucks & motor mount
6. wheels
7. motors
8. {everything else}
9. remote
10. aesthetics: grip, colors, lights

And select a top speed, I’d say 28mph (45km/h) to target. As you select your components, try to target that speed for a Loaded Speed in the calulator. Maximize (within reason) your

A) wheel pulley tooth count
B) motor Kv

within reason. For the rest of the parts, try to get the top speed to match.

Common combinations are things like:

• 10S / 190Kv / 110mm / 15T / 42T for 28.3mph (45.6km/h)
• 10S / 190Kv / 85mm / 16T / 36T for 27.2mph (43.8km/h)
• 12S / 170Kv / 110mm / 15T / 44T for 29.0mph (46.7km/h)
• 12S / 170Kv / 100mm / 15T / 40T for 29.0mph (46.7km/h)
• 12S / 190Kv / 85mm / 15T / 36T for 30.6mph (49.3km/h)

Try not to go below 15T for a motor pulley.

If you target a top speed that’s too much higher than you’ll actually use, then you will unnecessarily lose torque and strain your ESC and lose hill climb power and range and reduce reliability.