"peak power" - Trek 4300 20" Magic Pie build.

[neptronix]

I fully understand. Maybe Canada is like the USA where you can sue someone for looking at you wrong as well If so, i get it.

I think it's funny that golden motor says that a 10kW motor is good for a car. That's around 13 horsepower. What kind of car? a rickshaw?

The cromotor is nice, but i'd like to do something different, and the GM 5kW motor is a little cheaper anyway. I also like the idea of chain drive since the motor can be shielded from rain/snow/salt slush on the roads - something that would kill hub motors over time. May just order the 10kW so i can use it on a motorcycle later on. 5kW is a bit too weak for a vehicle that's going to weigh 200-300lb more than my bike anyway.

Will see how it goes.. weather is good.. prime time for finally getting around to testing..

[Golden Motor Canada]

I think it's funny that golden motor says that a 10kW motor is good for a car. That's around 13 horsepower. What kind of car? a rickshaw?

Not sure what this car is, but it seems simular to a VW rabbit. I havent looked at all his videos. He has 14 videos and it seems most are on this car. I have no experience personally with this motor other then to pick it up and say "holy fugg this thing is heavy". Quite a few people buy them and I receive no complaint. I would think if it was hooked into a standard transmission like this guy did, it would be quite sufficient. Again the folks at ES seem to have no desire in something powerfull enough. It would seem the interest is more for overpowering. Which is fine, my bike is far beyond the 500w limit in Canada so I do understand it. Saying that, I am not sure if it would suit someone from ES but others seem happy.

Gary



BTW, Canada is no where near being like the "Lawsuit happy" USA. But we do have laws that if you go to a bar or a party, drink until your shitfaced and then drive, the bartender or party host is somehow resposible if you have an accident. It's not something that makes sence to me. I am not really worried about a lawsuit from Neptronix, I am more interested in seeing him live and enjoy his ride.

[chroot]

Right on, Gary.... 10kw is pretty powerful just like CroMotor 9.3kv coming for me (2 items). I can't wait get my butt kicked!

BTW it's not an VW Rabbit, I used to be owned a 1979 VW Rabbit Diesel. I looked closely and found it's ZAZ Tavria

back to subject.... @neptronix why not just your own custom homemade bike frame with extended swing arm similar like this viewtopic.php?f=6&t=37489 and install 10kw black GM motor in mid-drive. I am sure this will kick your butt instantly!

[JohnC]

May be ordering the big black motor from you soon ^_^

Please keep in mind the 5kw and 10kw motors are intended for motorcycles and cars

Gary

Thank you for trying to talk some sense into me Gary, unfortunately i am a bad listener
But actually, i really just want the 5kW motor for it's heat dissipation. Not to run my bike at highway speeds like liveforphysics

Am going to point the magic pie up some nasty long grades soon, now that we are out of winter. If you see an order for a 5kW, you'll know it didn't survive, lol..

Don’t bullsh@#t the man, Nep. We see the videos. In civilian life you’re a freelance knight of the quarter mile strip, winning back road joust on your chrome-gilt steed exploding like Vesuvius when you wind her out, red lining the ca and doing zee-ro to sixty in five flat, @#$damn, leaving the other dudes like they were standing still. We know your ambition is buy an even hairier beast/(pie) and spend the rest of your life watching telephone poles whip past in a blur.

[neptronix]

BTW, Canada is no where near being like the "Lawsuit happy" USA. But we do have laws that if you go to a bar or a party, drink until your shitfaced and then drive, the bartender or party host is somehow resposible if you have an accident. It's not something that makes sence to me. I am not really worried about a lawsuit from Neptronix, I am more interested in seeing him live and enjoy his ride.

Gary; i can't believe that car conversion, lol. That is such a tiny transmission. I bet that car came with a 2 cylinder motor. It probably makes the geo metro look like an overweight pig.. i suppose i never heard of any car with that low amount of power here in the USA... well i guess you win this argument ... that motor is something like 30 pounds, isn't it?

That bartender/party host law has gotta put a damper on having a good time, but it's good to hear that you guys aren't as litigious. I do understand your stance and thanks for being concerned about my safety


chroot: i live in an upstairs apartment and don't have the means or space to build my own frame. But if i were to go over 40mph on anything ( other than to test a motor out just for kicks ), i'd do it on a motorcycle or scooter chassis. Bicycles just aren't adequate for the job, and i'm not interested in dealing with the potential legal issues anyway.


JohnC: I won't deny that

[o00scorpion00o]

Sigh, do you chaps not realise a classic VW Golf when you see one ? Shame!

I would say it had a 1.2 60 hp 4 pot engine, just a guess.

[neptronix]

Looks like a golf from the back, but it is a ZAZ Tavria.. note the description in the video

Here is the specs for the car:

http://www.carfolio.com/specifications/models/car/?car=33231

1700lb/770kg
1.1 liter 4 cylinder, about 50 horsepower.

He is feeding about 5kW into it, 100A/60V, but all the other cars are passing him

We have something similar in the USA.. the original Geo Metro. 1620lbs and 50hp. However, most of them are rusted out, circa 1990's.. quite old..!

Those cars were slow with 50 horsepower. So 10kW constant, even with good torque, is gonna be NEV territory and it's gonna slow down on hills. Sorta like running a 250w eBike..

[o00scorpion00o]

Yes I do see that now, it really looks like an old Golf!

[neptronix]

BTW..

http://www.pikespeaksports.us/group/roadcycling/forum/topics/assault-on-the-peak-date-moved-to-july-14

Looks like the pike's peak ride has been moved back a few months.
It's also half the length.

Yay, i can carry less battery, and worry less about overheating the motor. That's a relief!!

[chroot]

YaY, I'll have CroMotor ready for this event on July 14, 2012 and eat your MPII alive! I probably will break the record instant!
























.... Yes, I am kidding!

[neptronix]

Actually if Jeremy makes it out here, he will pass me like i'm standing still. So no need to come all the way out to Colorado

I don't mind at all. I just want to take the crown from a particular company based out of Boulder, CO ;]

At only ~11 miles, i can run 2000w constant without worry. I may revise my speed upward and run a bit higher voltage.

[JohnC]

Hey Nep:
I designed you a patch you can wear for the race. It’s a first draft. Still working on the colors. Open for suggestions.

I live near a naval air station and we have a shop here in town that the pilots use that can stitch up any design for cheap, too.

[zombiess]

Actually if Jeremy makes it out here, he will pass me like i'm standing still. So no need to come all the way out to Colorado

I don't mind at all. I just want to take the crown from a particular company based out of Boulder, CO ;]

At only ~11 miles, i can run 2000w constant without worry. I may revise my speed upward and run a bit higher voltage.

I keep thinking of my photo I took of the 31 LiPo packs on my kitchen table thinking, yup, that ought to be enough to get ebikes banned from pikes peak. I also think WTF, I have 31 LiPo packs, I've gone off the deep end.

BTW, I'd rather work as a team if I do decide to enter. We'd pick a target speed and shoot for that. I would not be running 125V like I do now, I'd volt down for 100% throttle at target speed.

[neptronix]

I've got 24? packs now, I'm glad i don't have to haul all of them up the hill... ~30 lbs of battery is a bit much

My target average speed is 25mph, but i may go a bit faster, maybe 26-27.

I'd love to work as a team. I hope we can get some other ESers out there though... time to blow the weak sauce builds out of the water!!!

John: LOL, that's awesome dude. I'd rock it! Maybe we can revise the idea later... i like the Team ES idea that Jeremy is talking about

[chroot]

I don't know if 16S 40Ah or 32S 20Ah is enough using the CroMotor on peak power race?

I am sure they will ban my ebike easily due way overpowered than the Optibike.

[neptronix]

There is no wattage limit, and optibike brought a "1100 watt" bike, which they claim is capable of >2kW peaks...
So yeah, screw them. I'll run 1.5-2kW constant up that hill. They're going to need to redesign their bike this year if they want to beat any of us.

[zombiess]

I could build a 53AH 74V pack that will let me climb 10% non stop at 34mph for 20.4 miles leaving 20% in the pack, motor can do this no problem. I think 30+ mph average speed might be a bit fast, but I can back off the throttle with a strong enough controller and extend the range.

[neptronix]

It's only 11 something miles now though.. no need to carry such a large battery

[zombiess]

It's only 11 something miles now though.. no need to carry such a large battery

Then we can both run 74V and do 30+ MPH the whole race. I'll lend you a motor in a 20" wheel or a whole bike (the easiest solution) ready to go since I'm having an even longer swing arm version built right now. We'd combine battery packs. We only need to carry about 18-21 20C 5AH packs which is 74V @ 30AH and we would never slow down below 30mph unless the grade got above 21% for any length of time. This motor does not care about hills. The 30% grade I climbed in my video I had to ease into the throttle a little because it was rough and quite frankly it took me by surprise how fast it accelerated (If it was smoother I could have easily done that climb at 40-50mph with a better controller). A 10% grade only requires 3700 watts output to maintain 34MPH on a fresh battery pack, even with the voltage at 68V it's still going 31MPH with 3200W output. I probably wouldn't have to ventilate the covers on her bike, but I'm going to on mine and yours if we do this because I don't like risking damage. This motor just laughs at 10% grades.

I'll probably be married by the race so if I do come I might need to have 3 bikes built and have her trained how to ride high speed, but she's ridden motor cycles before at this speed and is under 100lbs. Hmmmm.... I like where this is going and I think I can persuade her to do it.

Maybe install cup holders for big gulps on the handle bars.

Let me see where life takes me as we get close to this race.

[neptronix]

Interesting proposition. I'd like to take the deep dish up there just for kicks, if you have it by then. I have 5S and 6S bricks and can hit whatever voltage it is best at.

I'd prefer a 24" or 26" wheel anyway. Think about how downhill bikes are built. The front is up super high, and the back is really low. With a 20" wheel in back, and 26" in front, i'm set up kinda like a downhill bike. Except i'm going uphill .

After hitting up some trails out here ( holy crap, i live in mountain biking heaven apparently!! ), i realize that my geometry is going to be squirrely uphill now..

[zombiess]

I've got a deep dish in my possession laced into a 26" wheel, just need to install it in my mountain bike after my back stops acting up as it has been recently. Only downside is I can only manage to fit a 16 tooth single speed like the Hubzilla because of the wires exiting that side. If Greyborg decides to carry these motors they will most likely change this so multi speed freewheels can be used. For right now I don't care, I just need to install it and see how it runs at 100V. Should add a ton of pep to my 26" wheeled bike over the 9c 8x8.

I'm soon going to own 4 ebikes... geez.

[neptronix]

4 eBikes.. welcome to the club.. i've got a 4th build on the way.. lol

multi speed freewheels are a must on that motor. plenty of room on that motor to make it happen if the dimensions are adjusted properly. Look at all that space on the disc brake side, for example.

[Tom Tom]

If I remember correctly, the o pti winner last year finished the 25 mile race in roughly 65 minutes.

I'd bet he could finish this years 12 mile course in 25 to 30 minutes? , or better?

I think you have to plan on averaging 30 mph to beat him.

[neptronix]

Hm, they reported an average speed of 20mph afaik.

[Tom Tom]

Yep I was off he averaged 21.6 http://connect.garmin.com/activity/110423332

I still think it will take upwards of 30 mph to win.