Modded Sprint

[aaannndddyyy]

I have just finished modifying my 2004, 3 speed, dark gray Ezee Sprint eZee Sprint electric bicycle specification reviews from 50cycles UK, specialists in advanced electric bikes with a 48 volt controller eBay.co.uk Shop - HuaQiang North Road: E-bike Scooter Parts: Electric Bike scooter parts throttle accelerator and a spare dahoo 10amp nimh battery pack giving a total of 51.6 volts (62v fully charged), able to reach 48 km/h (30mph) will cruse at 40km/h(25mph) and a range of 40km(25miles) with plenty of toque, the total cost of the project, Sprint 125 off eBay, Controller 20 off eBay, dahoo battery pack 17 off eBay, some wire plugs from maplins and an excellent ultra duo plus 30 charger Graupner ULTRA DUO PLUS 30 - 6416.67 - ModelmaniacsOnline.Co.Ukthis is not a charger you can just plug and play it needs setting up for all the different battery pack sizes and types I now have, total cost under 250 pounds. The controller has a pot so can be adjusted to the 15.5 mph speed limit when necessary.
The Ezee Sprint is a very well made high quality bike that is stable and safe at higher speeds with a very strong frame, the powerful brushless motor takes the extra voltage and high rpm rate with ease and has no notable heat buildup, with a no load speed of 67.5 km/h (42 mph).
This is my idea of the ultimate electric bike, I may go for a lifepo4 48v battery this summer if the Nimh start to go down hill, eBay UK Shop - PingBattery: 48V LiFePO4 Batteries, 36V LiFePO4 Batteries, 24V LiFePO4 Batteries
Or Direct from store works out cheaper than Ebay.
PingBattery LiFePO4 Battery packs for Electric Bicycle e-Bike & Scooter, Lithium Iron Phosphate Battery

 

[flecc]

That sounds great Andy, I remember you outlining your plans and now you've got there with it at a bargain price for that performance. A single battery solution would be a good finishing touch in due course.

An e-bike that will trounce any of the club cyclists should be a load of fun.

Not too many hills in Norfolk, but perhaps you can let us know how it climbs on any you meet. Should be really fast up them, but be careful not to overtake any police cars in 20 limit zones.
.

 

[Jeremy]

Andy,

I've got one of Li Ping's LiFePO4 batteries on the way. I'll post details when it arrives, hopefully later this week.

Jeremy

 

[aaannndddyyy]

Its not the police I worry about the Dutch styling of the sprint doesn’t draw attention to itself as it is still seen as a ladies or old duffers bike , I use mirrors when riding and stay on the road around the city seems to work as I haven’t drawn a second glance from the police, but the amount of times cars pull out of side roads into my path is scary , they take one glance see a push bike and go, it happens so much if I did dent anticipate it I’d be road kill.
I mentioned in a previous post about the police having a crack down on bike riding on pavements in my area they are going at it with abandon at the moment with the special bobbies dishing out tickets , I have seen a few parents taking there children to school being given tickets for being on the pavement. a friend of mine also has an electric (Heinzmann mtb conversion) bike has told me he’s been pulled over 3 times in the last few weeks, he is an invalid and has been told as long as he carries his documents proving his disability and a copy of the high way code he’s ok.

 

[aaannndddyyy]

Jeremy, I’ve read up on these batteries and ping do seem to be the best supplier at the moment 100% feed back quick deliverey and a lot of positive messages from members of different forums about this company and batteries the price is fantastic .

 

[echowind]

I would have great fun on a bike like that Andy .If I had a brain I would give it a go as well, if i didn't think I would blow myself up.

 

[flecc]

the amount of times cars pull out of side roads into my path is scary , they take one glance see a push bike and go, it happens so much if I did dent anticipate it I’d be road kill.

I mentioned in a previous post about the police having a crack down on bike riding on pavements in my area they are going at it with abandon at the moment with the special bobbies dishing out tickets:

I get this same trouble on my T bike Andy, they don't realise I'm often doing 24 mph or more. It also happens when someone sweeps past me, slowing to turn left ahead. They don't realise that leaves me overtaking them as they slow alongside.

We don't have the police crackdown though, complete tolerance in fact, officers strolling past even adults cycling on the pavement. Possibly a result of so many mixed use paths around here, most people no longer knowing which is which.
.

 

[aaannndddyyy]

Here are some Pictures which a member has asked to see, the bike looks fairly standard but the difference in performance is anything but standard.

[URL=http://img136.imageshack.us/i/ezzesprintyu1.jpg/][/URL]
Before and After modding

 

[aaannndddyyy]

Here are some Pictures which a member has asked to see.

 

[flecc]

Very clever and very discreet Andy, a real "Q" e-bike.

To all intents and purposes a standard eZee Sprint.
.

 

[tgame]

Many congratulation, Andy. It looks really good and sounds as if it gew jist as good. Burn up the Fine City!

 

[piotrmacheta]

Very interesting aaannndddyyy, I'd like to do the same thing to my bike. What power rating was the controller you used? - ecrazyman has a 350W and 600W in 48volt. I also note he has a 72volt one.
Thing is you say the battery is 62 volts fully charged - is this ok for the 48volt controllers and does it not have a high voltage cut off like my original ezee controller?
I would like to travel at about 20 to 25 mph if poss so should I use the 36V controller with some 48volt batteries or the 48 volt controller with same batteries. Sorry but this sounds like a dim question but I assumed that you can't exceed the rating.
Are the ezee hubs able to cope with it all?
Thanks for any answers. For info I fitted the ezee kit to my Specialized Epic full suspension mountain bike and it's really comfy but slow at the mo.

 

[BertYardbrush]

An astonishing bike!
Maybe you need a big bright headlight to warn the unwary of your unexpectedly speedy approach.

 

[aaannndddyyy]

What power rating was the controller you used? - ecrazyman has a 350W and 600W in 48volt. I also note he has a 72volt one.

This thread was started over a year ago from what I can remember the first controller I had was a 48v 18a 350w Ecrazyman, I was using 43 NiMHs which give 62 volt fully charged. but this controller never worked 100%.
I decided to go for the Ecrazymans 48 volt 28amp controller to try and get the problem sorted, at first this one didn’t run the motor smoothly ether but after reading the thread on Endless-sphere asking a few questions found the problem and solution, it tuned out to be a cheap and Ezee fix. There is a lot of information on controllers in the E-Bike Technical section of Endless-sphere.
Endless-sphere.com • View topic - Shenzhen (ecrazyman) Controller Information

Look at pages 7-9 for posts on this motor controller setup

The one I have now is an Infineon senserless controller 48volt 30amp from keywin (Ecrazymann) Got that one working by taking the senseless board off the controller and ran it as a normal sincered controller still going strong after nearly a years use.

48V/600W brushless controller for E - bike & scooter on eBay (end time 02-Sep-09 09:07:54 BST)

Thing is you say the battery is 62 volts fully charged - is this ok for the 48volt controllers and does it not have a high voltage cut off like my original ezee controller?

The caps inside the 48volt controllers are rated at 63volts +/- 10% (I think) I was using the controller to its full

I would like to travel at about 20 to 25 mph if poss so should I use the 36V controller with some 48volt batteries or the 48 volt controller with same batteries.

A 36v controller will blow, probable with a bang at 48v
In general the more volts more speed more amp better toque

Sorry but this sounds like a dim question but I assumed that you can't exceed the rating.

Yes and No you can exceed the ratings you can push them to there limits but go past the weakest link and again with the Bang and back to peddle power, its best to get a controller that will do what you need within its specified rating.

Are the ezee hubs able to cope with it all?

Never had any problems with being able to handle the loads at 63volts 30amps never get more than warm to the touch with plenty of toque, I have 3 Ezee Sprint Wheels 2 off the same clear out from 50cycles last year.

For info I fitted the ezee kit to my Specialized Epic full suspension mountain bike and it's really comfy but slow at the mo.

Have you got any pics?

This is one of my latest Ebikes a DH TWD full suspension bike
Running daily for the last 6 months with no problems.



Ezee Sprint motor
Ecazyman 48v 30a 600-800watt controller
Ping 48v 12a battery (2c 24amp)
Hot chili dh frame
Magura front & rear hydraulic rim brake set
Top speed 24 mph
Range around 25-30 miles

I have recently perchest a Crystalyte V2 controller 36-72v 35A, with a Cycle Analysis and will be fitting them to this bike in the next week or so just waiting for a few connectors to arrive, I will let you now how it runs at 72volts.

 

[drgcb]

Jeremy, I’ve read up on these batteries and ping do seem to be the best supplier at the moment 100% feed back quick deliverey and a lot of positive messages from members of different forums about this company and batteries the price is fantastic .

Totally agree. I've had a Ping battery (36V 10Ah) for a month now. Compact, light, and completely flawless so far.

Greg

 

[piotrmacheta]

Thanks for all the info aaannndddyyy. I've now bought the ecrazyman 48v controller 30A 600W and will try to connect it to the wheel soon. I still have to ask again to be sure not to blow it up but the controller says 'rated voltage 41.5~54V' so can I connect a battery that has 20 Nickel cells and is about 60V when fully charged?
Bike is still a bit of a project (wires and tie wraps everywhere) so will get pics when I get its sorted.

 

[aaannndddyyy]

Thanks for all the info aaannndddyyy. I've now bought the ecrazyman 48v controller 30A 600W and will try to connect it to the wheel soon. I still have to ask again to be sure not to blow it up but the controller says 'rated voltage 41.5~54V' so can I connect a battery that has 20 Nickel cells and is about 60V when fully charged?
Bike is still a bit of a project (wires and tie wraps everywhere) so will get pics when I get its sorted.

60 volts is normal for a lipo battery and will drop to around 54volts after a 100 meters or so, just don’t go giving it full power for the first 100 meters no need to test fate.
The color codes should be
Controller. Motor.
Blue Yellow
Yellow Blue
Green Green
Hull wires
Red Red
Black Black
Green Blue
Yellow Yellow
Blue Green
Let me now if you have any problems.
As I have aquired a few spares if you need anything.
Finding a controller to match these motors has been a problem for me, Ecrazyman has been upgrading and improving his products over the last couple of years with a little luck it should run strait out of the box.
When you say "20 Nickel cells" or you taking about Nicd as 20 cells = 24 volts (29v hot off the charger)

fyi
Crystalyte V2 controller 36-72v 35A and these motors not compatable.

 

[piotrmacheta]

Oops I meant a 40 cell Nickel Metal Hydride battery pack (2 packs with 20 cells each connected in series).
I'm glad you mentioned that some controllers aren't compatible with this hub - didn't know that as assumed all brushless controllers are the same and would work. I was contemplating the next step being a 72 volt controller just to see what speed I could get to but I really need to invest in a proper Lithium battery first.
Thanks for the wire colours. I assume that the battery red + and black - is still as normal!

 

[piotrmacheta]

Me again and I still have a problem, sorry. I have now connected up the ecrazyman controller 48v, 600w, 30A using the wire colours aaannndddyyy suggested and it doesn't seem to work. I think it might be the throttle connection but not sure.
I have 2 ezee throttles to try. One throttle connects to the ezee battery meter and this connects to the eZee controller via a 6 pin plug - red, green, yellow, black, blue and white. I note that green and red don't need to be connected for the hub to work (I guess these must be the meter wires). The black, white and blue must be the throttle wires as with any of these disconnected the eZee controller flashes 5 times. Strangely though, if the yellow wire is disconnected then the ezee controller red light stays on OK but the hub doesn't turn.
The new ecrazyman controller has 3 wires for throttle - red, green and black. If I connect the same colours up it doesn't work.
The other ezee throttle I have is a 3 wire one that does not connect to a battery meter. flecc has told me this is an earlier type. It has three wires as red, green and black (just like the new controller) so I tried this also but still no work.
Any ideas on what I do next? I think all the other wiring is OK because it's as per aaannndddyyy's post and I have connected the thin red power wire to the fat red power wire and when I connect power to controller I note it draws 1.7W so something is happening! The battery voltage was 44v (kept low just to be on the safe side).
Does the brake have to be connected? What does brake actually mean the controller does? The new controller has yellow and black for brake and another yellow for e-brake. Also there is a blue for digital speed meter (whatever that is).
Thanks again guys, you never know I might learn something!

 

[aaannndddyyy]

If you look at this thread JECKP had the same problem http://www.pedelecs.co.uk/forum/electric-bicycles/4434-ezee-sprint-replacement-controller-wiring.html Leave brake and ebrake cables disconneted for now as they are not needed for testing.