I wanted to practice acro mode flying so I did a rebuild of my Furibee F36-based low-profile tiny whoop.
Month: June 2017
I did a quick survey of the commonly available 6x15mm motors for Tiny Whoops. The KV rating (rpms for every volt applied) is probably the best for comparison purposes since rpms vary across the voltage range of the battery. That said, some motors only specify rpms. In that case, we assume the voltage is for the nominal 3.7V and derive the KV rating.
| KV | RPM @ 3.7V | |
| MMW Medium | 11000 | 40700 |
| MMW Fast | 14000 | 51800 |
| NBD Silver | 14800 | 54760 |
| RS Red/Black | 15946* | 59000 |
| MMW Faster | 17000 | 62900 |
| NBD Black | 17400 | 64380 |
| RS Purple | 18108* | 67000 |
| MMW Insane | 19000 | 70300 |
| NBD Gold | 19700 | 72890 |
*No specified KV rating; Value derived from claimed rpm.
The Furibee F36’s stock 150mAh batteries are good for around 5 minutes of flying. But that’s without FPV gear. With FPV gear, that goes down to around 3 minutes. If you want to get back some of that flying time, you’ll have to put in bigger batteries.
There are three problems with bigger batteries. First, they will be a tight fit (or won’t at all) in the stock battery bay. Second, they will cover the battery connector. Third, they will offset the center of gravity. We need to address these problems before we can fly.