Juicer II, the Etek build

Now road testing...

looks sharp - I love how you did the batteries.

I love the look of that!

Tell us more.

wicked. beautiful Artwork.

Customized Worksman loopframe
Custom springer fork using "Brain Fork" elements
16s1p 48v Headway 40160s EV-Twin
Manta (Refurbished Etek?) PM motor
100a EcityPower BMS
Kelly KDZ48401 controller

Cool, any performance numbers?

Porn... Nice work!

You in Missouri? There is a guy near me building very similar bikes.

High skills that man. Very, Very cool indeed.

I bet it is a real head turner. I know I would flag you down if I saw a bike that awesome around here!

what gearing reduction do you have ?
..it doesnt seem like you have enough to let the motor get into its normal rpm range.

^^ was thinking the same thing, going to be
Hard on motor & controller :? ... like to see
Some video and get some data on its
Performance..

Are you selling this one also? Will we get some
Shots of a scantly dressed female draped over the
Bike again?

KiM

Thanks for the comments, everybody.

Hillhater asked about the gearing. So I am running eleven teeth at the output shaft which drives a 23t sprocket on a free-wheeling coaster-brake (freecoaster). Welded to the shell of the coaster-brake hub is a standard 16t sprocket which drives a 44t final-drive sprocket. You can see it a bit better in this picture;

This arrangement is better than Juicer 1, whose clutch was at the output shaft, because now I am only dragging one chain around while coasting. Also Juicer II is a bit more modular in its battery pack. Early test-runs revealed a weak cell needing replacement. The above pic shows how I was able to swap out the cell with minimal disassembly.

So once that was sorted (and the rain dried up) I was able to do some more rigorous testing. I live in the hilly neighborhood near Dodger Stadium, and I am pleased to say that Juicer II, even with the controller limited to 100a, can climb nearly every hill. On the flats, I clocked forty-six on a slight incline. After recharging at the public tennis courts by Griffith Park, I went on a range-testing ride on the LA river bike-path. There I was able to confirm that Juicer II has mind controlling properties when a cyclist in distress flagged me down to use my tools. He said, "Is that an old Indian?" which is exactly what I wanted him to say. Nevertheless, I corrected him, saying, "No, this is a Juicer." and slid him my card. So up to Burbank and back, we went 12.7 miles before the BMS went into protection mode and cut off the juice. That happened not too far from this giant soccer-ball;


So there's some preliminary performance data, KiM. Another datum is weight; 111lbs using the bathroom-scale method. Yeah, those forks and wheels are heavy. So although I'm not satisfied with the top speed, I am happy with the power and range, and I'm sure if I upgraded to a 160a BMS (Yesa?) I'd tap more of the Etek's potential.

flügelwagen said:

.. about the gearing. So I am running eleven teeth at the output shaft which drives a 23t sprocket on a free-wheeling coaster-brake (freecoaster). Welded to the shell of the coaster-brake hub is a standard 16t sprocket which drives a 44t final-drive sprocket..

Click to expand...

so your reduction is 5.5:1
Which would mean the motor is at approx 2200 rpm at 30mph..
.. and 45mph if you can get up to 3500 rpm (max on 48v ?)

I'm not satisfied with the top speed

Click to expand...

but what is it,?.. and what are you expecting, more or less ?

He said he clocked 46MPH on a slight uphill, so I would guess near 50mphget on flat ground, pretty good!

I really like the looks of this bike. I especially like the frame and how it is shaped around the motor. And the battery boxes, of course. Some paint on the cells would make it even better.
Nice photos too, nice colours.

Ok, this is my favourite build of all builds this month !!

Perfect E bike. My dad had a 52 Indian superchief when I was 16. I Love what you did here. Hope to see this in the Valley, LA, or OC sometime. The colors are perfect.

What a fantastic conversion, my hat to you!

What size cells and how many are you running, I see 12 in pic, amp rating etc. please tell.

That is one proud looking bike, nice work, keep up the good work .

Hey, I just showed this to a friend and he noticed your peculiar chain tensioner, I've never seen anything like this but it sure is genial .

Just don't ask him for help on how to make the middle part, or he'll ask you for like $500 to $800 for his "help".. LOL.. Not a very helpful guy.

Thanks for the comments, folks. ES has always been a source of inspiration, education, and encouragement. I should let y'all know that there is a more comprehensive build thread at motorbicycling.com; http://motorbicycling.com/f9/juicer-48-etek-build-30233.html ...some of you have already found it.

So the latest additions are a surface mounted voltmeter and a horn in the headlight spot. I bent my own rules on both of these items. First, the voltmeter is an antique, so that violates the Juicer maxim; "No exotic parts I can't make myself." Second, the horn is a late thirties Harley design, which violates my "Phuck Harleys" motto.



Ah, who am I kidding? Harleys were pretty cool before 1950. Anyway, enough hatin'. We had a pretty wild windstorm this week and there's debris everywhere, but that don't phase Juicer. She loves going off-road and her springy forks and fat tires eat up the bumps. The voltmeter is none too accurate, but works fine as a relative measure. The horn is 113dB LOUD and is activated by a momentary button from Radio Shack mounted on the hand-brake clamp. Video coming soon.

They're gonna tear down the iconic 6th street bridge, but not before Juicer tore down it. Here it is, captured on iPhone video by my buddy, Abel...

http://www.youtube.com/watch?v=RQZMug9YwjI&feature=player_embedded

Looks great, perfect motor/battery placement. Form and function like it should be. Too bad it weighs 110lbs though! Ouch! I know that motor is about 30lbs, eh?