Hello
First we want to thanks Qulbix for the hiqh quality frames.
Qulbix made for us some litle modification at the rear swing, that we could use our new Central Motor - middle drive Motor - CPD@torcman with integrated gear.
I want to show the current project status. There are still some electrical modification at work.
We use the Qulbix frame, becaus its now the first frame, which could handle our input torque.
In the first step - we build an Bike without pedals. In the second step there will be the possibility to use pedals.
On the bike you could find the new middle drive Motor CPD - some information at:
http://www.greenroad.at/cpd system.htm (in german)
The CPD motor is a outrunner motorsystem - handbuild in germany [@torcman] - with about max 2500W continuance operation. The motor has an integrated gear.
The output rpm at the Motor ist now about 200rpm - 250rpm - we use an 18tooht pinion
At the 26" tyre - we use an 13tooth pinion.
The transmission is now fix.
The actual speed is about 30km/h - this is an legal street bike in Austria (thats the background)
The input Power for the motor is about -
1500W (12S LiMn battery with about 20Ah capacity)
The maximum Output torque - should be about at the range between (200Nm - 400Nm) - we have to measure this at an test bench for final proof.
The Qulbix bike weight ist now with the 1000Wh battery - 27kg
In our first tests, with this transmission setup its no problem to drive up at 44% - 53% - with an 90kg person.
In the next week we will finish the testings and i could give more technical details.
I also upload a video at youtube
[youtube]N9Ii9vg_EzU[/youtube]