itsallwhite
100 mW
- Joined
- Feb 7, 2019
- Messages
- 36
I've got a GT Sensor full suspension bike I'd like to 'electrify'. I've already got a hybrid bike running a TSDZ2 mid-drive which works pretty well, but I'd like to have a mountain bike too.
I can't do a mid-drive as the way the bottom bracket is mounted isn't standard so its either a geared rear hub or a direct drive.
The mountain bike will be used mostly for short rides towing 2 kids in bike trailer around property where we live (300 acre multiple occupancy community). There are 3 short (20 - 100 metres long) but very steep hills. I can just ride up them on my own without electric without trailer, and can sometimes get up them with trailer on a good day! Roads are gravel / dirt.
Also used for some longer rides on mostly gravel roads, with some hills and some flatter sections.
I have a spare 48v dolphin battery which I think I could mount on the bottom of the frame where there are a couple of water bottle mounts (no room in triangle due to suspension) with some extra zip ties or brackets for safety.
But the bit I'm stuck on is the motor. I'm on a budget with this one and I'd like to do it as cheaply as possible.
I've seen some cheap 1500w 26" direct drive hub motors on ebay. Do you think they would get the bike + trailer up the steep sections? Will I overheat the motor at low speeds but short distances? I am happy to pedal to assist.
Or will I need a more expensive geared motor (like the Mac with 12t winding)?
I'd prefer to go with the cheaper direct drive option if it'll work. What do you think?
I can't do a mid-drive as the way the bottom bracket is mounted isn't standard so its either a geared rear hub or a direct drive.
The mountain bike will be used mostly for short rides towing 2 kids in bike trailer around property where we live (300 acre multiple occupancy community). There are 3 short (20 - 100 metres long) but very steep hills. I can just ride up them on my own without electric without trailer, and can sometimes get up them with trailer on a good day! Roads are gravel / dirt.
Also used for some longer rides on mostly gravel roads, with some hills and some flatter sections.
I have a spare 48v dolphin battery which I think I could mount on the bottom of the frame where there are a couple of water bottle mounts (no room in triangle due to suspension) with some extra zip ties or brackets for safety.
But the bit I'm stuck on is the motor. I'm on a budget with this one and I'd like to do it as cheaply as possible.
I've seen some cheap 1500w 26" direct drive hub motors on ebay. Do you think they would get the bike + trailer up the steep sections? Will I overheat the motor at low speeds but short distances? I am happy to pedal to assist.
Or will I need a more expensive geared motor (like the Mac with 12t winding)?
I'd prefer to go with the cheaper direct drive option if it'll work. What do you think?