Stealth Commuter 26" 90s GT MTB

I have been looking into using an old GT cromo frame I have laying around into a stealthy commuter.
Some options I had considered. Ideally the battery and controller would be hidden in a half frame bag or something of the likes. No dash just a throttle.

1. BBS02, Mighty Mini 52v, nexus 8 rear hub
2. Rear Hub motor (not really sure what the best choice is here), Baserunner, Singlespeed setup.
3. Keyde rear motor. This is where I landed originally since it was just a hub and battery and the rest was controlled via Bluetooth. (I don't know if these will put enough power for my goals.

Ideally I would like to be able to hit 25mph easily on the flats and climb a couple of short 10% grades along the first 1/4 mile which has an average 6% grade.
I have been trying to find what the minimal setups are on the respective motors and controllers, but have not had a terrible amount of luck.

Thanks for any information.

If it helps, ebikes.ca has trip and motor simulators you can use to figure out how much power / etc it takes to do a certain job under certain conditions. That'll let you guesstimate how much of a system you'll need to do what you want.

Thanks for the info. Definitely think a rear hub motor headless may be the way to go.
Forgot to mention the ride is super short under 2 miles, so I'm hoping that a real small battery pack will work. I would rather charge it daily and have it small.

The smaller a pack you use, the more power-dense the cells have to be to support the same load with a smaller battery capacity. So either seek out power-dense cells or use more of them than you expect to need.

I was thinking about one of these

For stealthy and high power, I'd use a rear AKM-128H, run single speed. Or equivalent motor. For less power, AKK-100H or equivalent.

Just looks like an oversize IGH.

Gear it low, something like 38T chainring with 20T freewheel, so you can put all your energy into assisting on the 10% grades, and freewheel on the flats.

Speaking of grade. This is what is looks like one way. Mostly under 5% grade with some as high as 17%, but that is over less than a km.

glennb said:

For stealthy and high power, I'd use a rear AKM-128H, run single speed. Or equivalent motor. For less power, AKK-100H or equivalent.

Just looks like an oversize IGH.

Gear it low, something like 38T chainring with 20T freewheel, so you can put all your energy into assisting on the 10% grades, and freewheel on the flats.

Click to expand...

I'm definitely leaning towards something like this SS w/ small hub motor with a lot of juice run to it. help power it up the steep parts and throttle on for the rest.

I think I will be okay since the ride is so short. This is really a time thing cause it could be walked, but it would take about 30min, vs what should be about a 5-7min ride.

Fair enough. They're only short pitches, so you can gear higher. Should only require hard ten second efforts from you leading up to and at the start of the ramps, to get the motor RPM up to a high enough starting point that it doesn't drop off too much by the top.

glennb said:

Fair enough. They're only short pitches, so you can gear higher. Should only require hard ten second efforts from you leading up to and at the start of the ramps, to get the motor RPM up to a high enough starting point that it doesn't drop off too much by the top.

Click to expand...

Amazing. That is the info I was looking for.