full-throttle
1 MW
This is my first e-bike, built as a reliable everyday commuter.
I'm currently (slowly) working on a different concept which can be found here: http://endless-sphere.com/forums/viewtopic.php?f=6&t=15066
What it used to be
Bought the frame as a replacement to the cracked DH frame. I picked it because it has a long top tube (22.5") and short seat tube (15.5") - perfect for aggressive XC (the pannier mounts look a bit odd though on a DiamondBack Race series). Soon after I started commuting on it, so the fat knobbly tyres gave way to slicks, 5" suspension fork to a rigid and DH cranks to road double ring ones. Who knows what it would have ended up as if I didn't get a proper road bike.
Some time later, the pannier mounts came in handy for touring and I took the bike to NZ and Perth as well as a couple of mountainous tours around Victoria.
I only raced it once, and what a race it was: Otways Odyssey - a 100km MTB marathon!
Later still it became a singlespeed MTB..
Ver 1.0
Mark_A_W is the pioneer of the e-bike revolution at work. One morning, rather tired after riding in I asked him if he knows where to get a motor. He quickly offered me one of his - a rear geared bafang (no idea what model, prob s a 150mm), and quite cheaply too. He even threw in a small 6FET lsdzs controller and a busted throttle. All I needed was a battery and a bike.
The little controller used to be a 36V 10A and it didn't take long to mod it to 48V by replacing the caps and the main regulator.
The battery I got from V-power (never again) although it still working. And the bike - well.. why not give it another life!
So it began. I opted for 700c x 28 instead of original 26" to maximise the speed. Needless to say, the bike happily accepted bigger wheels and the top speed increased from miserable 25kph (@36V) to a more respectable 37kph (@48V). I've set it up as a singlespeed (150mm axle worked great with that, became a standard 135mm) and still think it makes a lot of sense for an electric bike.
Initially I had the batteries in a tool box at the back (those pannier mount came in handy again), but soon bit the bullet and repacked the cells inside the main triangle together with the little controller. So soon in fact that I don't even have a picture of it.
Ver 1.1
This setup got me through the winter, clocking 4,144kms. It weighted just under 20kg and had great handling.. but lacked response and comfort because of its small controller and skinny wheels. Said that, the bike kept up with Adrian's 408 48V Headways and Mark's 9C 60V Headways.. until it got to the top speed..
I could not fit any more batteries into the frame and I wanted a stronger motor and wider tyres, so I was looking into getting a new motor. My first choice was a BMC V2-s, but the cost was quite high, even if purchased directly..
Ver 1.2
After some research I purchased BPM code 13 from bms-barrery/ecitypower and a 12FET sensorless controller directly from lsdzs.
My first review here http://endless-sphere.com/forums/viewtopic.php?f=3&t=12582&start=15#p199870
I really like this combo, despite the usual phobias associated with sensorless it works great: smooth and torquey startup, responsive, efficient, operates at sub-walking speeds, grass and gravel burnouts, wheelies. Top speed is around 40kph on the flat w/o pedaling, 30kph w/o pedaling up 13.5% (35kph w pedaling). I'm light though.
Up to now it clocked close to 3,000kms.
Daily trip (one way)
Edit: added daily trip figures [metric (imperial)]
to be continued..
I'm currently (slowly) working on a different concept which can be found here: http://endless-sphere.com/forums/viewtopic.php?f=6&t=15066
What it used to be
Bought the frame as a replacement to the cracked DH frame. I picked it because it has a long top tube (22.5") and short seat tube (15.5") - perfect for aggressive XC (the pannier mounts look a bit odd though on a DiamondBack Race series). Soon after I started commuting on it, so the fat knobbly tyres gave way to slicks, 5" suspension fork to a rigid and DH cranks to road double ring ones. Who knows what it would have ended up as if I didn't get a proper road bike.
Some time later, the pannier mounts came in handy for touring and I took the bike to NZ and Perth as well as a couple of mountainous tours around Victoria.
I only raced it once, and what a race it was: Otways Odyssey - a 100km MTB marathon!
Later still it became a singlespeed MTB..
Ver 1.0
Mark_A_W is the pioneer of the e-bike revolution at work. One morning, rather tired after riding in I asked him if he knows where to get a motor. He quickly offered me one of his - a rear geared bafang (no idea what model, prob s a 150mm), and quite cheaply too. He even threw in a small 6FET lsdzs controller and a busted throttle. All I needed was a battery and a bike.
The little controller used to be a 36V 10A and it didn't take long to mod it to 48V by replacing the caps and the main regulator.
The battery I got from V-power (never again) although it still working. And the bike - well.. why not give it another life!
So it began. I opted for 700c x 28 instead of original 26" to maximise the speed. Needless to say, the bike happily accepted bigger wheels and the top speed increased from miserable 25kph (@36V) to a more respectable 37kph (@48V). I've set it up as a singlespeed (150mm axle worked great with that, became a standard 135mm) and still think it makes a lot of sense for an electric bike.
Initially I had the batteries in a tool box at the back (those pannier mount came in handy again), but soon bit the bullet and repacked the cells inside the main triangle together with the little controller. So soon in fact that I don't even have a picture of it.
Ver 1.1
This setup got me through the winter, clocking 4,144kms. It weighted just under 20kg and had great handling.. but lacked response and comfort because of its small controller and skinny wheels. Said that, the bike kept up with Adrian's 408 48V Headways and Mark's 9C 60V Headways.. until it got to the top speed..
I could not fit any more batteries into the frame and I wanted a stronger motor and wider tyres, so I was looking into getting a new motor. My first choice was a BMC V2-s, but the cost was quite high, even if purchased directly..
Ver 1.2
After some research I purchased BPM code 13 from bms-barrery/ecitypower and a 12FET sensorless controller directly from lsdzs.
My first review here http://endless-sphere.com/forums/viewtopic.php?f=3&t=12582&start=15#p199870
I really like this combo, despite the usual phobias associated with sensorless it works great: smooth and torquey startup, responsive, efficient, operates at sub-walking speeds, grass and gravel burnouts, wheelies. Top speed is around 40kph on the flat w/o pedaling, 30kph w/o pedaling up 13.5% (35kph w pedaling). I'm light though.
Up to now it clocked close to 3,000kms.
Daily trip (one way)
Edit: added daily trip figures [metric (imperial)]
Max voltage 58.4 V
Min voltage 48.1 V
End trip voltage 52.1 V
Total discharge 5.5 Ah
Total energy 284 Wh
Max current 26 A
Max power 1330 W
Total distance 23.3 km (14.6 mi)
Average speed 32.5 km/h (20.3 mi/h)
Total time 43 min
Ave energy/distance 12.2 Wh/km (19.5 Wh/mi)
to be continued..