post your 0-100 feet acceleration time

[Eric G]

Bike/motor/batts/me/ = 99.1 KG + 2 liters ice cream/1 lb pepperoni/2 tomatoes/1 Lg. bag of BBQ Fritos.

Let me guess from that shopping list: the great bulk of that 99 KG weight is "me".

Yep...
Did the run behind the grocery store

[Tony]

Finally upgraded to the crystalyte 35a controller. Seems to have a "soft start" compared to the stock 15a controller. But I did shave about a second off my time to 6.1 seconds. With this set up the midrange torque is great! Its just starting to pull hard at the 100 ft mark.

[Mathurin]

I guess you could try holding the brake, full throttle till it ramps up a bit, then let it rip, unless it don't work that way...

[scottclarke]

I guess you could try holding the brake, full throttle till it ramps up a bit, then let it rip, unless it don't work that way...

Haha - thats funny! Commence a run with a burnout - I'll have to get a vid of that - methinks the time will be faster too - lotta energy in the flywheel - sorry - rear hub!

[fechter]

Finally upgraded to the crystalyte 35a controller. Seems to have a "soft start" compared to the stock 15a controller. But I did shave about a second off my time to 6.1 seconds. With this set up the midrange torque is great! Its just starting to pull hard at the 100 ft mark.

There's a way to fix that.

[Lowell]

I guess you could try holding the brake, full throttle till it ramps up a bit, then let it rip, unless it don't work that way...

Haha - thats funny! Commence a run with a burnout - I'll have to get a vid of that - methinks the time will be faster too - lotta energy in the flywheel - sorry - rear hub!

Worked great for Ferris Bueller!

[fechter]

Vego SX-600 with modified BMC 600w motor.
Total weight 270 lb.
48v.

100' in about 4.5 seconds, +/- .5 sec.
Speed around 25mph at the end.

It was hard to work a stopwatch and ride at the same time.
I'll try to get an assistant next time to make the measurement a bit more accurate.

[Lowell]

Vego SX-600 with modified BMC 600w motor.
Total weight 270 lb.
48v.

100' in about 4.5 seconds, +/- .5 sec.
Speed around 25mph at the end.

It was hard to work a stopwatch and ride at the same time.
I'll try to get an assistant next time to make the measurement a bit more accurate.

Now that's more like it! You must surprise the heck out of the unsuspecting when riding the Vego.

[fechter]

I like waiting at stop signs for a car to pull up and stop. When they start to go, I hit it. The look on their face is priceless.

[EbikeMaui]

"How To Win Enemies & Alienate Everybody"
By Randy Draper

[fechter]

I like waiting at stop signs for a car to pull up and stop. When they start to go, I hit it. The look on their face is priceless.

They must be supprised to hear the loose marble sound in your hub motor as it acclerates.

What a freaking idiot...
I'm NOT using a hub motor. It's a high efficiency brushless motor with a single reduction belt to the wheel.

[TylerDurden]

I like waiting at stop signs for a car to pull up and stop. When they start to go, I hit it. The look on their face is priceless.

They must be supprised to hear the loose marble sound in your hub motor as it acclerates.

What a freaking idiot...
I'm NOT using a hub motor. It's a high efficiency brushless motor with a single reduction belt to the wheel.

Some folks "smoke" first thing in the morning...

[Lowell]

It's interesting how he automatically associates 'fast' with 'hub motor'.

[Lowell]

While doing efficiency tests tonight on the 5304/20" combo, I stopped in a parking lot and tried a couple of 0-100ft runs. Battery pack was a little over half drained, but the times were under 4 seconds. I'll be retesting on a fully charged pack, and I wouldn't be surprised if it's mid 3's.

The 5304/20 is a wheelie pulling monster! I positioned the bike with the back wheel at the bottom of a fairly steep loading ramp and it pulls with authority from a stop. In fact you can't give full throttle off the uphill start otherwise the bike will throw you off the back.

[fechter]

Now we're talking...

You'll have to be careful when the roads are wet. If you lean forward far enough and nail the throttle, you might be able to spin the rear on dry pavement.

Ever try it in the dirt?

[Lowell]

It'll spin easily in dirt, but I think that has more to do with having road tires. Since my 'tank bag' is off the bike right now I have nowhere to mount my video cam. I'm going to have to build a proper mount and shoot some new vids.

[Lowell]

3.5 seconds. I can't really get a good launch with the camera mounted though. The bike wants to wheelie and I can't lean forward enough to give full throttle off the line.

[xyster]

3.5 seconds. I can't really get a good launch with the camera mounted though. The bike wants to wheelie and I can't lean forward enough to give full throttle off the line.

Cry me a river....

[Doctorbass]

yesterday, tested my 5305 fo rthe 0-30mph time.

I got 7.1sec with current limited.

I feel that the voltage is the problem...I reach the top speed very quickly, but it stabilize fast too.

it appear that havinh more volt would give me more fun..

i'm getting regular 53kph on full charge, already hit 58kph on flat too, but i am thinking adding a 12V pack of A123 and to re-adjust my current limit to 60A... maybe i will get the famous 0-40mph on 7sec.. or less

Doc

[Lowell]

Do you notice your amps dropping off before 30mph?

12 more volts and a 60A current limit should be interesting on a 5305. 0-30mph in the 4 second range?

[Doctorbass]

Yes, My amp drop .

It start with something like 25 or 30A during the 0 to 5mph, reach 40A max during 6 to 15mph and drop from 16 to 30mph

I can keep 30mph with 750W on flat, so if i can match the right voltage to reach the 40A at top speed that would be interesting.
I watched the vid with 7kW 0 to 40mph. maybe I can do something similar...I would like to try!

I wonder if it's the 72V controller with 4110s fet upgrade or the one with 150V fets that would reach 7kW... 150V fets have higher mohms and would heat up faster...

I think the 5305 have very high limit due to the max quantity of wire turn and that would help to dissipate heat too.

4110 fet + 5305 + A123 high current at 80V+ maybe is a bomb that i do not assembled from now!?

I would like doing 4sec or less! I hope my dropout can hold that torque!
Doc

[steveo]

While doing efficiency tests tonight on the 5304/20" combo, I stopped in a parking lot and tried a couple of 0-100ft runs. Battery pack was a little over half drained, but the times were under 4 seconds. I'll be retesting on a fully charged pack, and I wouldn't be surprised if it's mid 3's.

The 5304/20 is a wheelie pulling monster! I positioned the bike with the back wheel at the bottom of a fairly steep loading ramp and it pulls with authority from a stop. In fact you can't give full throttle off the uphill start otherwise the bike will throw you off the back.

I can't wait to get 100v 30s 5p pack going... i think it would be impossible to keep the front on the ground.. it wheels very easily at 66v .... i even have 150v controller .. omg !!!!

[Lowell]

Update this thread when you test the new pack 0-100ft

[dickselectrictoys]

with my ultra motors Europa (have for 2 years) 36v 12Ah 350W motor, w/cruise control.....timed out just over 5.5 seconds. that was on level ashphalt, if i measured correctly? lithium ion/ 2.125 x 26.

[Farfle]

Hehe, fastest post here till Luke gets around to whatever madness he has strapped to his bike. Had to do a few runs to get the launch nailed. Dual pie with my fat arse on it averaged 100' in 2.9secs at a top speed of 36mph. Best time was 2.6 @ 41mph, worst was 4 secs @33mph.