Agni 95 electric motor in 2009 Kawasaki Ninja 250R - Test 1

[drz4000]

I did a conversion o an 03' Ninja 250, agni motor, geared 6:1. Right now using 72v, 35 ah o AGM. Awaiting 24 SE Lifepo4, 60AH. User name DRZ4000 for video.

Check out Elmoto forum, lots of EV Motorcyle conversions.

[drz4000]

Nice machine work....why the jackshaft? What is your top end geared for? What kind of batteries will you use....and were will they go?  Again, nice job.

[BarronGreig]

Thanks. Jackshaft for sure not the cheapest route! Reasons:

1) Motor size would prevent drive sprocket being at original location. Would have changed rear squat characteristics under acceleration.

2) Able to use standard replacement sprockets (expect long life from belt - it will be enclosed).

3) Can retain original chain guard.

4) Reduced noise because don't need tiny front sprocket.

5) Motor directly in airflow for efficient cooling.

6) Motor somewhat protected from lowside damage.

[BarronGreig]

Top end geared for 65mph.

Batteries: 72 20AH prismatic Lifepo4 cells from cell_man (see endless-sphere forum). Cells arranged 3P24S for 60AH pack, 72V nominal.

Pack organised into 6 60Ah 12V nominal sub-packs. 2 between motor mount panels. 1 each on left and right outside of motor mount panels. 1 under rider seat. 1 where gas tank was.

Motor mount structure is braced to reintroduce frame rigidity that had been provided by the ICE. I have video of 1 subpack also on youtube.

[RIPPERTON]

@drz4000

Jackshaft is because you cant run the Agni anti clockwise so the belt is on the right, jackshaft over to the left and chain on the left to rear wheel.

Greig you wasted a lot of battery space with the motor frame and putting the motor out front.

Motor should be tangent to the swingarm pivot and down low in the belly pan.

My R1 racebike has single chain drive and no squat

[BarronGreig]

@RIPPERTON

1) Wrong - the Agni is bi-directional. Adjust timing correspondingly

2) Jackshaft doesn't take up ' a lot' of space. I had 6 reasons for jackshaft listed in this very thread. I don't want to add more batteries. Bike weighs same as original gas bike with half tank of gas. Current range meets my requirements. So why make it heavier with more batteries?

3) Motor doesn't have to be low down in belly pan. I have maintained the C-of-G of the original bike so handling is the same

[BarronGreig]

@RIPPERTON Also there is a guy in the same electric race series you were in this year that has two Agnis connected with shafts facing each other. Since you say the Agni can only run clockwise can you explain the physics of how both motors would run clockwise in this configuration? It seems to me like they would need to be spinning in opposite directionswith shafts facing each other, so one would have to be rotating anti-clockwise. You should check his bike out.

[BarronGreig]

@RIPPERTON

There are many bikes with direct drive Agni on the left hand side too. What is the physics behind these bikes? If, as you say, the motor only runs anti clockwise it would seem that they could only go in reverse, yet in video they seem to move forward?

[drz4000]

Nice machine work....why the jackshaft? What is your top end geared for? What kind of batteries will you use....and were will they go? Again, nice job.