Tidak puas dengan rancangan sepeda listrik biasa. Dia membuat sepeda listrik sendiri, dan dinamai “Doctorbass”. Jarak tempuh lebih dari 200km dengan satu baterai, bisa ngebut sampai 70km perjam. Bukan cuma itu, sepedanya lengkap dengan lampu depan, indikator kondisi baterai, sistem pendingin dan alarm kondisi baterai. Membutuhkan 432 baterai Li-ion untuk menghasilkan power 24aH / 100V. Berat baterainya saja mencapai 20kg, dan total berat sepeda mencapai 58kg (waduh ini mah motor bentuk sepeda). Sampai bulan 6 tahun 2009, sepedanya sudah jalan 8000km. Makanya sepeda Doctorbass ini berani dipublikasi setelah mampu menempuh ribuan km.

Rancangan sepeda dari sepeda Mongoose Blackcomb mengunakan suspensi coil. Dibawah ini detail rancangan motor Doctorbass

Owner Doctorbass
Owner's Other EVs 1996 Trek 970
2008 Supercycle Hooligan
2010 GIANT DH Comp 106km/h
Location Quebec, Quebec Canada map
Web/Email WebPage email image
Vehicle 2008 Mongoose Blackcomb
Frame type: 4-bar vertical spring aluminum dual suspension frame
Frame material: Aluminum for light weight and durability

Suspension fork: RST Capa-T6; coil/MCU spring, non-adjustable 75mm
Rear suspension: Adjustable coil
Motor Crystalyte model 5305 Brute 5000 serie Brushless DC
This motor can take 9KW and deliver a torque of 200N.m at dead stop and 120N.m at 40kph.

It's a brushless using hall effect.
Controller Crystalyte 100V 90A for brushless motor
this is a original 72V 35A Start immediate that i moded with 12 IRFB4110 Mosfet. I also replaced the large capacitor inside with lower ESR and larger capacity
Batteries 432 Sony 18650V (known as Konion).used in Makita, Bionx an, 3.75 Volt, Lithium-Ion
2.21 Kilowatt-hour LiMnO2
I built this pack myself with engineering knowledge for thermal management and safety protections.
I used many used 18V 3Ah LXT power tools battery pack of Makita.
These cells are 1600mAh each and are mounted in 24s 18p groups.
The total pack give 100.8V fully charged and 24Ah.
can take 10C discharge

no need equalizing!!
System Voltage 101 Volts
Charger Doctorbass DIY 1.0kW charger/Balancer
I take 2h10 for full charge!

I built the 20A rate multi charger.
it is made of 12 DC-DC Artesyn converter that are adjusted to 4.2V and 20A current limit.. all DC-DC are powered by a Meanwell 48V 32A PFC power supply.
DC/DC Converter Vicor
I used some DC-DC to lower the voltage to 12V to supply accessory like headlight, rear light and navigation computer and GPS.
Instrumentation -Cycle analyst V2.0 ebike computer
-4 Voltage meter
-Motor temp meter
-Accelerometer (beltronic racing instrument)
Top Speed 47 MPH (75 KPH)

I measured that on flat no wind with my GPS and the battery was fully charged to 100.9V.
Acceleration 0-20kph 0.53sec!!
0-40kph 2.71sec!!
0-60kph 6.9sec

0-100m 8.71sec
tested with 40 pounds of battery and 6.6kW max

Range 153 Miles (246 Kilometers)
At 40kph on normal road I get 200km with one full charge and
Watt Hours/Mile 21 Wh/Mile
at 40kph it draw 21Wh/mile
EV Miles
Current: 5,412 Miles (8,707 Kilometers)
    As of 6/20/2009
Seating Capacity 1 adult
Curb Weight 129 Pounds (58 Kilograms)
Fully loaded this bike is heavy but the frame can take it easily.

The acceleration is still amazing!
Tires normal 2.1 x 26 and 24inches
Conversion Time I stopped counting
Conversion Cost 2500$

Modelnya si jelek, tapi jarak tempuhnya enga nahan boo. Dari Jakarta ke Bandung juga sampai.

Website http://www.evalbum.com/1947