The EVil 48V 20AH Chopper - Electric Giant Stiletto

hi all
reading this thread makes me want to get my chopper back on the road, i it has a similar layout to yours though not as high spec running a puma mk1 in a 4 inch wide 24 inch dia rear wheel, it was running off 48v NiMh once the chopper is fixed I may change to LiFe Po too.
 
RevDon said:
For some "real" looking chopper forks, check out this site:

http://www.bicycledesigner.com/defaulthome.asp?Main=/datasheet.asp%3FPartNumber%3D513020

I really like the springers, very old-school. 8)
Don
Click to expand...


OR...get yourself over to ChoppersUs[ And get yourself some chromed blinged out Springer forks...I am waiting on stock of the top fork at the moment for my build, no word back on Alan on availability as yet. The $233 jobs are fantastic '1000watt' from this site bought a set, they are impeccably made on slight draw back is their weight.

If your the DIY type there is plans to make Springer forks here

Hope this helps

Kim
 
"I"!!
 
Gonzo said:
The disk brake installation went ok, though the adapters from ebike.ca were quite a low quality and did not fit flush against each other- I had to use a huge vise grip to get enough torque to thread them onto the motor cover. The adapter is not 100% straight, so the disk is just a little bit wobbly and does not have enough stopping power to stop the bike by itself.

I found a remedy for that problem, though. Here is my brand new front drum brake installed:

DSC02123.JPG
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Had to fully rebuild the front wheel- the radial spoking that looked so cool is gone. Well, the ONLY thing radial spoking is good for is looks. It should never be used on a wheel with a disk or drum brake- the torque will most likely rip out some spokes at some point. The brake is Sturmey Archer with a 9mm axle- had to do some adjustments to fit it into the 16mm Stiletto dropouts- seems to hold nicely so far. And the stopping distance is now like 3 meters down from around 15 :shock:. No more holding on to my dear life while commuting :D
Click to expand...

What "adjustments" did ya do to fit a 9mm axle into a 16mm dropout, please? A sleeve??? Details would be much appreciated as I'm building a RED Stiletto with an XCelyte 5305R. I thought they made a pretty boneheaded move with the disk caliper mounts on the front fork and no provision for mounting a disk. Purely from a "looks" angle, I'd rather have disks front and rear, but I'm gonna have to work that out or use another bike with rim brakes. Oh well, another snag! So what else is new???

Your front spokes match the rear now, and I'd think the radial spokes on the front would look strange with the rear spokes needed for the hubmotor. I'm gonna have to work to match the "cool factor" bar you've set!

BC
 
Thanks for your interest and enthusiasm, guys! :D

I basically used these adapters to mount 9mm axle on 16mm dropouts:

http://www.jensonusa.com/store/product.aspx?i=BX307D07#reviews

Yes, the electric system is using a Microverter 48V to 12V 20A converter for motorcycle lights, horn and a 12V 70A relay that controls the main current. There is a pre-charging key-switch (to avoid sparks when connecting to battery), kill-switch, lights switch and a horn button.

BTW, the bike is for sale on eBay for the next 4 days, so if you are interested. I went bankrupt making it and would love to recover some money back :D

http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&item=330260241333#description

Here are some more pictures with the rear carrier installed now.

DSC02125.JPG

DSC02127.JPG

DSC02128.JPG

DSC02132.JPG

DSC02133.JPG

DSC02136.JPG
 
NO bids??? Damn, I'd have paid Your opening bid in a heartbeat if I'd known ya were gonna ebay it. I spent over $800 for parts to just get started copying your Stiletto. Of course, getting it from Canada to Texas would have been another issue entirely. Mo money, MO Money, MO MONEY!!!

And for my project, I have the bike (mine's red) and a C'lyte 5304, which I think is roughly equivalent to your Golden. Bike shops here in Austin, Texas have no concept of 20" wheels with any kind of brakes, so I'm going to have a BMX rim and Mountain bike hub stitched together, and go with a disc brake. Looks like the cost will be close to your drum brake, but i just like the disc better. Gotta get an adapter for the smaller front axle that the hubs call for. Adding the disc brake adapter to the C'lyte motor side cover is gonna take some machine work, and I haven't found a shop yet that does small projects.

It's gonna take some doing, but it WILL get done! But like every project I've ever started, it's gonna take longer and cost more than it did when I imagined it. The consolation is that I hear the same comment from just about everybody with the gonads enough to get into project building instead of settling for "off the shelf" stuff.

Whee!

BC
 
Yeah, it didn't sell, but I was almost hoping it wouldn't =) Would be a shame to let it go so cheaply after so much effort put into it. We seem to be destined to be together =) Unless a reasonable offer comes along 8)

I just got a 5AMP charger from Ping to replace 2AMP one that died for no apparent reason. Ping was really nice about it- only asked me to pay shipping and the price difference between the 2AMP and 5AMP models. The new charger recharges batteries from 0 to 100% in just about 3 hours now! Had to replace 5AMP fuses on the charging wires with 10AMP ones- 5AMP fuses were just heating up too much, transferring heat to surrounding electronics.
 
Awesome build. Can you post or send me info on how to add a disk brake to the GM hub motor.
I'd like to make the same mod to my GM hub.

Thanks,
Scott
 
Thanks, Reid, slbaker and others who gave me inspiration to push on with the electric revolution. Hasta la Victoria Seimpre! :wink:

The summer is here, so I finally got around to "pimping up" the bike a little with the FAT rim I got from dirtdad. The second time you make a wheel is MUCH easier. The one I made a year ago took me about a day to assemble and true. This fatboy wheel only took an hour and a half after I got the spokes. The result is veehry naiiiis :lol: The ride is now much more comfortable with the fatter tire. I didn't really expect the fat tire to fit the factory built fender of the Stiletto, but to my amazement it DID! With about 2mm clearance (after I lifted the fender just a little by expanding stock mounting holes)!!! It's like Stiletto was DESIGNED for all those customizations. Also finally hid the battery cable, which stuck out like a sore thumb before.

P1000843.JPG


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After a year of riding the electric Stiletto I can conclude the following about the frame:

1. Stiletto frame is IDEAL for electric conversion. The steel dropouts in the back are wide enough, don't require torque arms (at least for GoldenMotor)
2. Strangely, the bicycle handles GREAT at speeds of 40kmph and above. Didn't really expect that from a show-off bicycle designed to be pedaled around the block at a warp-speed of around 10kmph.
3. LOTS of storage space for batteries
4. Tires are high quality and handle extra weight of motor and battery very well- didn't have a single blow-out (knock on wood).
5. The seat is a little firm at first, but gets softer after a while and you also get used to it.
6. Turn radius is fairly large (probably 2x that of Mountain Bike), but the bike is very agile, has a very low center of gravity, leans well into turns and is very stable. I think it is much safer to ride than a mountain bike with an electric motor.

Too bad Giant doesn't seem to sell those anymore. Might be hard to get parts... If you get a chance to get your hands on Giant Stiletto for conversion- don't hesitate!

Cheers,

Mike
 
Regarding the Ping battery. I've been using my 48V 20AH battery pack (the one hidden in aluminum lunch box) for more than a year now- though -20C winter (on dry ice-free days) and +30C summer. Probably did around a 100 full-charge cycles. Still performs as new, range is the same, torque is the same. The battery didn't seem to care what the weather was. Got my 40-45 km range in both -20 and +30. Very impressed.

The 5A charger was not so good. It started to act a little flaky about half a year ago. Now it works only if I tilt it to one side 30 degrees or so. Must be a malfunctioning relay or something. Did anyone have these problems with Ping chargers?
 
My ping did care about cold, but I only knew it because when the range decreased, I began to run out of power about 1/2 mile from home. Part of the problem was headwinds, that seasonally arrive with the cold. In the coldest mornings, I began to see a longer time to recharge for the ride home, indicating more of the capacity was used when it was below freezing. I killed my ping charger pretty quick wiring a plug wrong, ( ac in the dc side duuuh). Nice choppper for sure, I had a very hard time not buying a schwinn one last week at the flea. Too broke since it was bills week.
 
Read the post. Nice build. 5 on EBAY only in red [http://cgi.ebay.com/BICYCLE-24-CHOPPER-GIANT-STILETTO-RED_W0QQitemZ400064084829QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item5d25ad7b5d&_trksid=p3286.m20.l1116/url]
 
Hi Gonzo is the bike still for sale, I live in Toronto and would be interested in purchasing it.
How much do you want for it?
Thanks Dave
 
Hi Dave:

I may be interested in selling this bike, depending on how much I could get for the sweat I sweated while making it :) Just the 48V 20AH battery and the fast charger alone cost me around $600. I've made a spreadsheet that outlines all the costs involved in making this bike- the total amounted to $1652. Add time spent making it over the course of three months and we are well over $2000. I guess I could give you a discount since the bike is used. Are you still interested? If so, PM me or post an offer here.

Regards,

Michael
 
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