Hill Helper

[JennyB]

Is there a tutorial on ES on how to post a You Tube Video ??

I have a video of my drive on You Tube that I would like to put on here ... Any help appreciated...

Bill

Simple. When you play your video you will see in the URL that YouTube has given it a unique identifier. That's the string of numbers and letters following "watch?v=" and possibly followed by & and more stuff. Copy and paste just the identifier (nothing else) between the opening and closing tags the youtube button on the reply form here. Done.

[rearengine]

http://youtu.be/XF-GDeOyqsA

[rearengine]

Jenny B... Thank you very much ... This is the first for me on You Tube.. I guess I should have put Hill Helper title on , rather than leave pic 053 ... Maybe I can change it yet ... thanks again.... Bill

[adrian_sm]

Code: Select all

[youtube]XF-GDeOyqsA[/youtube]

[JennyB]

Like the brake post mounting.

That little shim you put in at the start - is it a safety device so that the motor won't engage with the tyre if someone fools around with it when it's parked?

[rearengine]

JennyB.... The shim has two steps on it ... The first step lightly engages the motor to the tire,for softer take off, kind of like a slip clutch... The second step on the shim is thicker and holds the motor on the tire more firmly , for less slippage on take off , and wet weather.. ( haven't tried that yet ) When the shim is out the motor is completely off the tire.. Thanks for asking... Bill

Adrian... I really like running w/o the grip tape , much easier on the tire ... Thanks for the posting my vid... Bill

[rearengine]

http://youtu.be/Oq2EQqsbHDI

Yup It's a little to long , and repetitious... I haven't learned how to edit yet ...

SPINNER !!! This is the same 280 motor I got from you , running strong even after smoking the controller ,And ST.. I'm running w/o grip tape on the can , and liking it ... Just 18 volts though ...


Bill

[adrian_sm]

Looking good mate.

I have been trying out the no grip tape as well. Went for a nice 40km ride, averaged ~7wh/km, and 27kph.
But I spent about 5-10km on dirt/gravel tracks and that contributed to rubbing the paint off the surface of the motor can. Apart from that it was great.

It does sound like yours slips a bit under hard acceleration. But I might just be hearing stuff, who knows.

- Adrian

P.S. to embed the youtube videos like below, jsut put the weird numebr bit from the youtube url in the you tube tags like this:

Code: Select all

[youtube]Oq2EQqsbHDI[/youtube]

Then it should look like this:


[edit: fixed typos]

[spinningmagnets]

Fun video Bill, thanks for posting! I'm glad the motor and ST are still working good for you. Every new variation of your mount just keeps getting better! Has anyone else ridden your bike under power? what does your wife think about it now that you've used it for a while?

My wife and I have begun using Glucosamine and Chondroitin tabs (52 yrs old), and our joints feel noticeably better. Even so, I may get a recumbent some day, and I like the style you have.

[rearengine]

brake mount

Picture 067 (Small).jpg (62.07 KiB) Viewed 382 times

I got an email asking if the single brake mount was strong enough to handle the torque of the drive.. The mount it's self is certainly strong enough , but the bolt that holds the drive ,and brake arm could be the week point ... So that is the reason for the JAY HOOK under the chain stay.. So far I'm

A picture is worth a word or two .... Bill

[Byte]

Very nice!! Will be following this build

[rearengine]

This may be a very stupid question ... Can I run TWO 63-64- 280 motors on ONE RC controller if the controller is high enough amps by taping into the motor phase wires ? ? I looked in the tech threads , didn't see any thing on it ... All I found was using one throttle and two controllers .. Nothing on TWO motors, and ONE controller.... Thanks Bill

[spinningmagnets]

Sorry, Bill. Since these motors are brushless, the controller has to have a way to figure out the position of the rotor as the magnets pass over the stator. Theres a thing called back-EMF that creates a little pulse in the wires, and that is what RC controller will sample to try and tell what the position is...so that it can send power to each of the 3 phases at just the right time.

Two motors wired into one ESC would confuse the ESC. I'm pretty sure you can run two ESCs with one throttle (Servo Tester), but each motor needs its own ESC.

[adrian_sm]

Can I run TWO 63-64- 280 motors on ONE RC controller if the controller is high enough amps by taping into the motor phase wires ? ?

Yep.

Put them on one shaft, so they are in perfect sync.

[rearengine]

Spinner & Adrian ... Thanks for the info .. For two motors I need two controllers... I can see now the tire wouldn't keep the motors in sync for one controller... This old dog has trouble with new tricks

Happy Thanksgiving to all on the Sphere.... Bill

[adrian_sm]

So you were thinking of two motor friction drive with a single controller? Why?

I guess you could couple them via a chain, but I can't see how they would then both be able to have controlled engagement with the tire.
Or you could put them on the one shaft, but only have one of the out-runner cans in contact with the tire.
Or you could just get a mofo out-runner, like the 80100's. I built up one of these on a friction drive, but never did much testing on it as I was trying to use an ebike controller with halls so I could do burnouts and wheelies, but had to return the parts to the owner before I had a chance to blow them up.

Personally I would just use separate controllers, they are cheap.

- Adrian

[Grinhill]

Hi Bill
I've just read your entire thread, and really enjoyed it. You've got a really well sorted friction drive now. Well done.

The video with the camera mounted on the bike worked really well.

(I'm guessing your handle "rearengine" refers to your Chevy Corvair rather than the bike?)

[rearengine]

my pictures (Small).jpg (24.42 KiB) Viewed 270 times

Well this is just an idea I had... put two motors to work having two cans to tire patches...This should help on low end,and not add to top speed much... They would run independently of one another, on separate , but identical controllers...100-120 Turnegy Dlx controllers ...5000MAH 6s... Don't know if the 280 motor will ever be available again... Do you think it's worth it?? Winter is coming...


Grinhill... thanks for taking a look.. Yes " Rearengine"is for the Corvair ... I've been known as " aircooled " in some places also ...


Bill

[adrian_sm]

Ah,I see now. That should work, but you would need a centering spring to stop the motors from flopping around and hitting the tire when not in use. Worth a try if you think the advantages are worth it. I personally am happy with one motor, but most of my testing has been with 500w power limit, with a turbo 1000w mode I only use occasioanally.

[rearengine]

I think I'll forget about the two motor set up.. The drive is working great the way it is , best I leave it alone.. BUT !!! it's going to be a long winter I have a hub motor in a 20" front wheel ,and most of the parts needed... I got some good advice over in Photo & video..( REVISITING PUSHER TRAILER ) thread They say build it and see if works .. I'm say why not ... I posted a couple of drawings in above thread, Photo & video... Bill

[Powdersummit]

I'd love to see a 2 motor or 2 or more drive wheel friction drive. It would be interesting to see how much torque you could transfer to the tire. I've been thinking of some kind of 2 drive roller design that could be used somewhat off road.

Carl

[rearengine]

Powdersummit.. You must be a skier ...

I don't think I will go with two motors because it gets away from the simplicity of the drive... The two controllers , two motors , twice the weight , not as stealth, and more $$$...You build it I'll hide and watch , I have no reason to think it wouldn't work , even off road ...

I'm running WITHOUT grip tape , and if it slips I can't tell because there is no rubber chaff on the frame, much easier on the tire

Adrian ... My thinking is the pivot could be snugged up pretty tight , so if it got batted it would stay put pretty much ... Thanks guys .... Bill