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Old 04-10-2010, 02:23 PM   #271 (permalink)
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This treadmill motor unfortunately is complete garbage and started smoking under initial load testing.

Here's a ton of photos of the currently non-functional sculpture that is this project.







Last edited by captainslug; 04-11-2010 at 12:54 AM..
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Old 04-10-2010, 08:22 PM   #272 (permalink)
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I only have one question, what's the advantage of running a tensioner vs. having slotted mount hols for the motor? Seems to me like 1 more thing to break or fall off.

Amazing bike by the way!
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Old 04-11-2010, 12:56 AM   #273 (permalink)
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Quote:
Originally Posted by racer_x124 View Post
I only have one question, what's the advantage of running a tensioner vs. having slotted mount hols for the motor?
With a heavier motor you don't want to have the mounting of it to have any potential for play that might result in misalignment.
I'm using base-mount motors, which you can't adjust the distance of while maintaining good drive alignment.
Having a tensioner also makes replacing the belt or chain much easier.

Last edited by captainslug; 04-11-2010 at 01:04 AM..
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Old 04-11-2010, 11:52 AM   #274 (permalink)
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It is gorgeous.
I suppose you'll be looking for another treadmill motor?

Or are you going to look elsewhere for something of similar size and different engineering?
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Old 04-11-2010, 11:02 PM   #275 (permalink)
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BORK! - '89 Volvo 240 DL Wagon
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Well, looks like I'll take one last stab at this. I've ordered the motor I ORIGINALLY INTENDED TO USE. A MY1020 rated for 60-volts.

TNC Scooters (Scooter Sales and Service)
The only problem I had with the first motor was that it wasn't able to handle the higher RPMs that resulted from over-volting. It never had any issues with the loads placed on it otherwise.

I also have a plan for mounting it so that I can get rid of the belt tensioner.
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Old 04-23-2010, 06:09 PM   #276 (permalink)
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BORK! - '89 Volvo 240 DL Wagon
90 day: 21.27 mpg (US)
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Motor is installed. In order to get the pulley on the drive shaft of the motor I had to tap and bore opposite ends of its ID. The thread isn't a perfect match, but its good enough to keep it locked on tight.

The self-retracting extension cord reel fit nicely when wedged into the bottom of the frame. Which I'm very pleased about.

I made a replacement idler sprocket using a cheap freewheel, and an aluminum freewheel adapter from recumpence, which I lathed down a bit and then stuck a sleeve bearing inside of it.

And that's all I could get done today.
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Old 04-30-2010, 11:29 AM   #277 (permalink)
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BORK! - '89 Volvo 240 DL Wagon
90 day: 21.27 mpg (US)
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This project seems to hate me. I now have one dead battery and the DC converter no longer seems to be working.

If anyone wants to buy this project it's yours for $1000 + shipping.
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Old 04-30-2010, 11:48 AM   #278 (permalink)
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Electric Cycle - '81 Kawasaki KZ440
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This project is too nice! Somebody has to pick up the torch on this one!
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Old 04-30-2010, 03:26 PM   #279 (permalink)
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Don't give up you have done a great job with this.

With any new prototype/experimental project there will be set backs, learn from them and get-r-done.
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Old 04-30-2010, 06:45 PM   #280 (permalink)
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That is a sick looking bike. I like the tidyness of having the buss bars vs the cabling on the pack. Are you planning on insulating them somehow? Would hate to see the sparking for an ill placed screwdriver.

I assume you hard wired in a charger? the dangling 3 prong cord might get in the way I think though. Would think a male 3 pronged receptacle would be ideal, but then again you may be wanting to take advantage of plugging in to a wall outlet no matter where you are and not having to hunt down a cord.

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Quote:
Originally Posted by jamesqf View Post
I think you missed the point I was trying to make, which is that it's not rational to do either speed or fuel economy mods for economic reasons. You do it as a form of recreation, for the fun and for the challenge.
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