Help Wineboy fix this old Ford Think Bicycle. Thanks Dogman!

[wineboyrider]

Someone stole my specialized yescomusa bicycyle and my batteries and a black electric scooter that isn't working........? Of course I am going to put lipo in it, but apparently this motor kills brushed controllers? Any source of good quality brushed controllers around 800 watts? I know the electricscooterparts.com has some, but thought I'd ask out for some help

 

[dogman dan]

It does kill controllers. Starts in high gear pull a huge amp spike. When I got this bike, it had a blown controller, and the original tires looked to have less than 10 miles of wear on them, nubs still there on the bottom of the tire!

I put maybe 50 miles on it, before the cheap yi yun controller I bought for it blew. And I tried to be more careful about starting in lower gears too!

This is the bike, a 200w brushed bottom bracket drive ford think.

Lots of possibilities for the frame, including putting a second motor on it. Nice battery tray. Had it been a steel frame, I'd have turned it into a longtail long ago. But it could still become an extracycle longtail.

 

[dnmun]

if it cooks the controller then maybe replacing the mosfets with better ones and raising the voltage will help.

i assume the case hides a pair of 12V SLA.

 

[wineboyrider]

The batteries are long gone I presume. I want to run it dual motor with a bldc hub motor in the front or rear. It's really beefy motor I bet the gears would shred before the motor heats up..I was thinking about this controller 24-60V 700-1000W Electric Scooter/Bicycle Speed Controller
24-60 Volt input range. Works with 24-36 Volt motors up to 700 Watts, and 48-60 Volt motors up to 1000 Watts. Under Voltage protection 20.5 Volts. Current limiting feature prevents controller and motor damage due to over-current conditions. Includes a standard variable speed hall-effect throttle with grip and a matching right hand side grip. Works with 24, 36, 48, and 60 Volt battery packs.
Item # SPD-601000A
http://electricscooterparts.com/speedcontrollers24volt.html

 

[wineboyrider]

if it cooks the controller then maybe replacing the mosfets with better ones and raising the voltage will help.

i assume the case hides a pair of 12V SLA.

One of Dogman's and I's thoughts too is by upping the voltage the heat buildup in the controller might be less. The other idea is a 3 way switch to have a on/off dual motor setup using the same voltage battery. I really like the frame though and is going to make a great setup for my commutes..The big battery box is a huge plus.

 

[dnmun]

see what keywin, ecrazyman on ebay, has to offer for brushed controller if you wanna use the motor.

then see what you can do to that motor with 350 or 500W at 36v lifepo4.

 

[kfong]

I rebuilt one, sold it to my friend. Picked up a 40 amp brushed motor at 36 volts from tnc scooters. Bumped it up to 10S. Used the original battery box for the batteries and my smart switch to monitor it. I was originally interested in the bike because it had a real Torqe sensor, but was turned off by the bikes ergonomics. Seat was too far forward. Makes an acceptable utility bike. Kept none of the electronics, and got rid of the ugly shell.

http://endless-sphere.com/forums/viewtopic.php?f=3&t=52417

 

[wineboyrider]

I had a electricscooterparts 36v 40 amp brushed controller in my izip 450 and it was mysteriously taken too? But, I ride my bikes mostly as commuters anyways and this looks the ticket besides it's gifted...Thanks kfong for your input and that thread link.

 

[dogman dan]

Pricy controller, but nice that it runs on all kinds of voltages.

I'd just go for 12s or 14s, and run it on something like this. top one on the page. http://electricscooterparts.com/speedcontrollers48volt.html


I kept meaning to get er running again on 48v ( all my shit is 14s or 13s), but never got around to it.

Same thing cheaper on ebay someplace I'm sure. The hope would be that at 48v, the amp spike would not blow the fets. And of course, faster top speed for sure, even if limited by wattage needed to around 20 mph.

 

[amberwolf]

You could look around for an old Curtis golf cart controller. I doubt you'd blow that one up. Might melt the motor eventually with enough hard starts in high gear. :lol:

Find someone that's doing a car conversion and has given up on their old Curtis and is replacing it with something more powerful. DIYElectricCar.com forums would be a good first check.

they are a little on the large side, though...I think mine is about hte same volume (different shape) as an 18Ah SLA. But if you have a place for it, you could destroy many small brushed motors with it if you wanted to.

 

[kfong]

What was nice, was the one I had used was about the same size. I used the same location with Velcro and a tie strap.

 

[wineboyrider]

Actually, AW I have a good friend who has rebuilt a small army of electric golf carts and he buys his controllers on ebay and rebuilds them. I was just thinking it would be a better to have a controller that can tame that beast of a motor. It would probably be like lightning at 60v

 

[999zip999]

60v 40a 2400 watts. It just needs a white basket up front for around town. Front wheel burn out's

 

[wineboyrider]

60v 40a 2400 watts. It just needs a white basket up front for around town. Front wheel burn out's

That's if the chain survives! LOL 8)

 

[dogman dan]

Yeah, I wouldn't try to push it past 800w for that reason. 48v 15 amps. But if you do, it WILL wheelie. If you trash a chain or freewheel, it's cheap to replace a rear wheel from the junkpile.

One option I just thought about, buy a 30 amps 48v controller, but then clip one shunt to half it. Then you have a controller able to take 30 amps, but getting 15.

 

[amberwolf]

Actually, AW I have a good friend who has rebuilt a small army of electric golf carts and he buys his controllers on ebay and rebuilds them. I was just thinking it would be a better to have a controller that can tame that beast of a motor. It would probably be like lightning at 60v

Oh, I think "tame" wouldn't be the right word with the golfcart controller on there. :lol: IIRC mine is around a couple hundred Amps that it could put out, at least for long enough to cook a motor like that one, though only at 36-40V, I think. Might be 48V HVC (meaning 60V, since 48V SLA would charge about that high).

But even if it was only "36V", at up to 100A, that's still nearly 4KW. :lol:


It'd probably do to that bike what not quite that kind of power did to CrazyBike2, via the brushed powerchair motor I had on it at the time, running thru the gears and chain, when the chain derailed, damaged the chainrings, and pulled the axle out fo the dropout, and spokes almost out of the rim, before it finally twisted and snapped the chain.

 

[999zip999]

I was thinking of the dual motorsetup the rear for hills and start up and a front for high speed 400rpm motor left hand throttle.

 

[dogman dan]

I left him an old 2810 winding motor too, so he has the option of making it a fast dual motor with the 2807 front motor he still has, or a hill monster with the 2810.

He lives in the shadow of quite a mountain btw. But mostly he just blasts to work and back on ebikes, a short flat ride. So the front and faster makes sense to me.

My idea was to put the mid drive motor on the same throttle, but run it through a rocker switch or even a push button. Put the chain in a low gear, and you get a nice take off on the mid drive, then at about 20 mph, shut it off.

Why shut it off at all? the mid drive is noisy as hell. All metal worm drive gearbox. Use it for snappy starts, climbing big hills, or towing.

 

[wineboyrider]

AW what I meant by tame is that the motor can take anything a scooter controller can handle. But, I agree a golf cart controller even at 12v would fry it. I am going to do the dual motor setup eventually and run it at 48vf with 2 controllers kind of like Dogman says, in fact I have a cool 3 way switch from my old ezip that would work perfect for a single motor dual motor switch. The biggest disadvantage is having to carry the extra weight of 2 motors, but the power will be there when it's needed. I am thinking a small DD hub like the one conhis sells might be a good combination, because it's smaller and lighter and doesn't have to be punished on the hills.....like this onehttp://www.conhismotor.com/ProductShow.asp?id=420

 

[dogman dan]

Yep, and a geared motor would freewheel if you wanted to run on just the mid drive at times.

 

[wineboyrider]

Installed my brand new yi yun yk43b controller in the bike today and man it flies! I saw peak watts of 2200 with 14s lipo and top speed of 30 mph! On 10s lipo I saw peak watts of 780w and on 6s lipo I saw around 600 peak watts. I probably would love it at 12s, but I will try it and see.....I have to save up some money to buy some more batteries.. :?
It is noisy, but it's faster than my cyclone kit I had at 900w.

 

[dogman dan]

And it's winter, (or was two weeks ago anyway) so your short ride to the winery won't likely fry it too soon.

I always thought some vents in that cover, or even running without it might be good if you overclocked that motor.

Does it wheelie in low gear?

Doing anything next Sunday? In Cruces, we are doing the toys for tots bike ride at 11 am. Decorate the bike, and bring a toy. The run is about 3 miles.

 

[wineboyrider]

Oh yeah it wheelies in first gear alright even with my 205 lb butt on it..I like it real good on 10s lipo, but my zippy 8's are about to go to lipo heaven the one pack sags bad. I think it would run very reliably and fun on a 8s lipo with the turnigy hardpacks as 6s lipo is lame as hell even with 10s saggy lipo I can hit 25 mph on the flats. 8)
I have to go to El Paso on Sunday.

 

[dogman dan]

Cool, glad you are digging that bike. I just never got around to trying it on more watts. So many bikes to ride in my garage already.

No big deal about the toy run, I'll just be the only ebike in a crowd of 400, again. Fun to decorate the bike like a Christmas tree.

 

[Ykick]

Cool, glad you are digging that bike. I just never got around to trying it on more watts. So many bikes to ride in my garage already.

No big deal about the toy run, I'll just be the only ebike in a crowd of 400, again. Fun to decorate the bike like a Christmas tree.

LOL... Not as if an eBike's lacking battery capacity.

Happy holidays and the best to both of you!