[evmotorcycle]

That sounds der like some Smack Talkin' Dr Jones. >

[RIPPERTON]

Post race motor pull down...
hall side stator is shorting to core. This is most likely a result of the controller tripping out at full throttle as the windings jerk back and forth and wear through the laquer.
Not sure if that robbed me of any power during the race as the motor pulled smoothly all weekend.
Have re assembled the second motor and will install it for the ride day at Phillip Island next week.

What I learnt at Wakefield,
advantages of Hub motors in racing (yes there are some !)
the weight of the motor in the rear wheel drastically reduces forward weight shift during braking meaning you have 2 wheels braking not like a conventional bike where you have the rear wheel floating in the air.
We only discovered this once Jon (Catavolt) finally started tweaking his Kellys and turned regen up to 50%. The effect was phenomenal, instantly the Dealim (Korean for donkey) started braking like a McLaren F1 and was easily outbraking me into turns. You can see the effect in the 3 videos posted on YouTube a couple of posts back in this thread.
In contrast heres what my bike did when I turned regen up to 50%. It was like someone sticking a broomstick in my rear spokes.


I locked up and went straight through the gravel, came in and had to turn regen back down to 23% on switch mode because when I activate boost function in the Kelly the regen brake loses its pot modulation function (????)
sounds like some sharing going on in there but the power ramping at low speed was more valuable to me than variable regen.

Riding so close to Jason all weekend I saw exactly what the disadavantges of Hub Motors are. The unsprung weight of the rear wheel almost rolls the tire off the rim in some of the corners and makes the bike slow to tip over into corners as the gyro forces are very heavy.

So now you have the Hub Motors 2 main advantages and disadvantages in direct opposition to each other.
The superior braking is something you want to design towards but the bad handling has to be designed around. Maybe a full sized 190 tire would help.
This definitely has me thinking about Hub Motors in a race bike, very eye opening considering I was totally against Hub Motors up untill now.

Under advice from a front running SuperMotard racer (Shaun Geronimi) who test rode my bike on Sunday morning in Warmup I have fitted standard genuine Yamaha front brake pads and have noticed an improvement in bight straight away.
He also gave me one of his older Pirelli Diablo SuperCorsa's straight off his Motard bike as the Michelin Power ONE was under par and both he and I saw the front end pushing and sliding in turns.
Il have to get him to ride my bike more often.

[RIPPERTON]

Heres some shots of Shaun on my bike thanks to Tony Castley

[RIPPERTON]

And most importantly a nature shot with the local wild life

[RIPPERTON]

Fresh motor in and cooling system bled ready for Phillip Island, time for a little music. 5200rpm

http://www.youtube.com/watch?v=88GFgchxnXY&feature=plcp

[rochesterricer]

I've always liked the idea of a hub motor on a street bike. I get sick of cleaning and lubing chains. That reminds me, I've gotta replace the chain on my wife's bike sometime soon.

[JRP3]

or



But yeah, a wheel motor seems like a pretty neat option.

[rochesterricer]

Belts and shafts have their own set of advantages and disadvantages. I'd prefer to just bypass all that

[RIPPERTON]

another awesome vid from Andy Marsh

http://www.youtube.com/watch?v=b8Npa...ature=youtu.be

[jakun]

Hello RIPPERTON.


I am new on this forum. I have read all this forum topic and now I have a question. I've got an electric motorcycle and want to change it now from a brushed to a brushless system. I've got a A123 40ah 144V battery already ordered a ME0913 and now the question is which controller to take? A Kelly controls employee told me that the heat duty is not so good on the KHB14401 (400A, 200A) and it would be better to take the KHB14601 (600A,250A). I only worry, that the stronger Controller could burn the coils with too much Ampere. What do you think about it? Thanks in advance for your advice.

Originally Posted by RIPPERTON

get a 144v 400A Kelly, then go 48s 2p (160v 40Ah A123 pouch) 6336kWh
Those motors dont mind higher voltage but high amps will kill the magnets.
But be sure to get the ME0913 (28 turn winding) and not the ME1012 (12 turn)