RoadRanger
1 µW
- Joined
- Oct 23, 2008
- Messages
- 4
Didn't know if mopeds belonged in this subforum or the ebike one?
Anyways I've had one for about a month and was hoping to discuss mods and fixes.
Mine has 4 batteries (48V) but I've read that there is space for a 5th to bring the top speed up from 25 MPG to 30 MPH which is the moped speed limit in my state (Connecticut). I have a 5th battery ($33) coming in this week and a 60V charger due in week or two (or so ) from China ($15 vs $60 from the US). I'll probably lose regen braking but we'll see...
Actually the present top speed is fine but I would like to get a bit more range and the extra battery will give me 25% more if I keep the speed down to 25. When the batteries die in a year or three (?) I'll either upgrade to the 22AH ones from the present 18AH ones or go with a lithium pack.
OTOH hill climbing and acceleration from a stop are kind of wimpy (but better than expected) so I might "butter" the current shunt to increase torque a bit. I also have a 800w 60v controller on order for $24 but might try to mod the stock one as I've read it can be a PITA to get the motor wires right on a controller swap. the stock controller is 500w 48V.
#1 improvement so far is to keep the tires aired up to max to minimize rolling resistance - makes a HUGE difference. Riding two-up with my kid is about 270 lbs so I have the rear shocks cranked up to max too. Chinese tubes tend to leak - my front was OK but the rear badly needed air after a week. So I got a $7 8 oz bottle of Slime for tubes at Walmart and put 4 oz into each yesterday. When I removed the air I carefully squeezed in (to break the seal to the rim) and rotated the tires w/tube until the stems were straight before adding the Slime and re-inflating.
The stock voltmeter seems OK but I'll have to mod/calibrate it for the 60V. The stock speedometer reads WAY high (as others on the web have also noted) and I might mod/calibrate that too - but it seems to show throttle position more than actual speed anyways?
Anyways I've had one for about a month and was hoping to discuss mods and fixes.
Mine has 4 batteries (48V) but I've read that there is space for a 5th to bring the top speed up from 25 MPG to 30 MPH which is the moped speed limit in my state (Connecticut). I have a 5th battery ($33) coming in this week and a 60V charger due in week or two (or so ) from China ($15 vs $60 from the US). I'll probably lose regen braking but we'll see...
Actually the present top speed is fine but I would like to get a bit more range and the extra battery will give me 25% more if I keep the speed down to 25. When the batteries die in a year or three (?) I'll either upgrade to the 22AH ones from the present 18AH ones or go with a lithium pack.
OTOH hill climbing and acceleration from a stop are kind of wimpy (but better than expected) so I might "butter" the current shunt to increase torque a bit. I also have a 800w 60v controller on order for $24 but might try to mod the stock one as I've read it can be a PITA to get the motor wires right on a controller swap. the stock controller is 500w 48V.
#1 improvement so far is to keep the tires aired up to max to minimize rolling resistance - makes a HUGE difference. Riding two-up with my kid is about 270 lbs so I have the rear shocks cranked up to max too. Chinese tubes tend to leak - my front was OK but the rear badly needed air after a week. So I got a $7 8 oz bottle of Slime for tubes at Walmart and put 4 oz into each yesterday. When I removed the air I carefully squeezed in (to break the seal to the rim) and rotated the tires w/tube until the stems were straight before adding the Slime and re-inflating.
The stock voltmeter seems OK but I'll have to mod/calibrate it for the 60V. The stock speedometer reads WAY high (as others on the web have also noted) and I might mod/calibrate that too - but it seems to show throttle position more than actual speed anyways?