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View Full Version : Silent Speedster Rolling Frame - 20" rear / 26" front



troynh
06-09-2012, 10:03 PM
So, I finished my rolling frame this evening... Next is the seat, foot pegs and battery mounting plate.
I'm going to go with a 20" www.ampedbikes.com front hub motor. It'll be powered by 48V 18ah Lipos. (6ea. 6s 6000mah from www.hobbyking.com)

Thanks for a great design/plans!

-Tim


https://vimeo.com/43742046 (https://vimeo.com/43742046)

Radical Brad
06-09-2012, 10:23 PM
Great work! You are going to be grinning for days after feeling the pull of that electric motor.

Brad

troynh
06-09-2012, 11:12 PM
Thanks Brad. I hope so! I'm not a small guy... 235ish + the bike weight. That's why I stuck with that 20" in the rear.

I'll keep posting updates along the way.

-Tim

troynh
06-10-2012, 11:19 PM
Added a longer and larger diameter seat post tube for a Cruiser Gel seat (http://www.amazon.com/Sunlite-Cloud-9-Bicycle-Suspension-Tri-color/dp/B000H87PUI/ref=sr_1_1?s=cycling&ie=UTF8&qid=1339381048&sr=1-1). ;) (The seat in the photo is off one of the donor bikes...)


-Tim

troynh
06-11-2012, 11:34 PM
Welded on the foot pegs.

-Tim

troynh
06-13-2012, 11:36 PM
Building a rear rack to hold the ESC and lipos...

-Tim


https://vimeo.com/43937060

troynh
06-15-2012, 10:05 AM
Mounted the rack last night...

-Tim

troynh
06-22-2012, 05:56 PM
Started painting...
Also received the Lipos today.

troynh
06-22-2012, 09:16 PM
One more pic...

troynh
06-28-2012, 09:01 PM
Tested the Lipo wiring this evening. Everything works great. Now the hard part of making it look clean...

-Tim


http://youtu.be/lSUp9Ymg9TA

The Cat
06-29-2012, 07:05 AM
Morning to you troynh, Your Silent Speedster looks divine. I like the posted pictures. The unfortnuate factor here in England is such a bike would be classifed as a motorized vehicle requiring registraion, insurance and driving licence. Would need a design which would pedal power rear wheel. One thought I have had is would it be possible to use a pedalled shaft drive to back of battery pack and a sprocket drive to rear wheel from that postion. Unsure as to configuration of shaft drive linking to sprocket behind battery pack and what of balance.

That my thoughts for now. Ta Ta and enjoy your built.

With Regards
Thomas (The Cat)

darnthedog
06-29-2012, 09:28 AM
Very cool Job so far. To hide the wires a bit you may want to get either a white wire wrap or White heat shrink tubing to have the wiring harness blend in to your frame. I would not recommend an sort of White electrical tape as it will ouze glue from under the tape and pick up every bit of dirt and grim from riding it. And hard to wash off. If you had the ability It would have be nice to run the wires inside the frame when running from front to back. But that has to be planned in advance and I would not recommend at this point. And you have to be able to remove and reinstall the connectors to run them throuh a tube.
Just and FYI to The Cat- This scooter in in the DYI plans to be nothing but an electric scooter. But I understand your pain.

Radical Brad
06-29-2012, 09:40 AM
Your scooter is turning out really nice!

Brad

troynh
06-29-2012, 11:17 AM
Thanks guys!

darnthedog, I may end up drilling a hole in the front and snaking the wires down the tube to the bottom bracket. It can be done easily but I didn't think it through during the building process. The throttle cable is roughly 1.5' too short. So, I'm going to have to lengthen that as well as make up a custom battery cable for the Watt Meter going back to the ESC. I'm glad that I didn't cap the bottom bracket! Lol!

Thomas, This was always planned to be an electric scooter. However, that said, check out www.ampedbikes.com. Their kits can come with a European governor that cuts the speed down to make it legal where you live. Danny makes these things with every safety gadget you can think of. (I'm not using them, but they're there to be used. I've already voided the warranty by over amping and using lipos :rolleyes:....)

Thanks Brad, Should have it all up and running by Sunday.

-Tim

troynh
07-01-2012, 07:33 PM
Okay, here's the maiden video. Don't knock me on my welds around the head tube. This is my first welding project... Also, it's awfully hard to cruise at 22mph with one hand and hold a camcorder with the other for the speedo and watt meter shots. Lol. Basically, I'm averaging 22mph at 11 + - amps on the flats. Pretty efficient considering the total weight that this wheel is pushing!

This has been a great project Brad. Thanks.

-Tim


http://youtu.be/iW-Rgizqy5U