GoCycle

[kudos]

http://www.gocycle.com/v/vspfiles/assets/images/downloads/sn4pnt1_green_resetting_controller.pdf

Yep, you just hold the power button down for the appropriate time when the bike is on charge.

Actually I don't even think it needs to be on charge, you hold the brake, then press the red button until you hear the two beeps.

Kudos

 

[The Stig]

Anyone know anything about the lithium battery upgrade that comes from the manufacturer?

 

[NeilP]

I think the owner said he looked and it was about £500, more than that, no idea
Good to find a scrapper and build your own pack in the old casing

Kudos, thanks for info on USA mode, I'll get John to try it

 

[The Stig]

I think the owner said he looked and it was about £500, more than that, no idea
Good to find a scrapper and build your own pack in the old casing

Kudos, thanks for info on USA mode, I'll get John to try it

I'd love to stuff some li cells in my stock battery case but I don't know what I would use for a BMS, I bet it would have to be tiny.

 

[NeilP]

Ah yes, a BMS, not something I ever consider
I would just fit an external plug to monitor balance and balance manually as and when necessary, maybe try and squeeze some of the 2-4s HobbyKing LVC alarms in there as warning

What is the voltage and capacity of standard pack?

 

[liveforphysics]

Ah yes, a BMS, not something I ever consider
I would just fit an external plug to monitor balance and balance manually as and when necessary, maybe try and squeeze some of the 2-4s HobbyKing LVC alarms in there as warning

What is the voltage and capacity of standard pack?

If you put in the cell-LVC alarms, be prepared to balance charge regularly, as they do (semi-slowly) imbalance a pack when left plugged in.

 

[The Stig]

Ah yes, a BMS, not something I ever consider
I would just fit an external plug to monitor balance and balance manually as and when necessary, maybe try and squeeze some of the 2-4s HobbyKing LVC alarms in there as warning

What is the voltage and capacity of standard pack?

Its something like 28V. I know its 9Ah, round-cell, NiMH. For balancing we would have to replace the stock charging plug on the battery with some multi-pin plug. I don't know what the stock controller LVC is, probably easy to figure out.

 

[NeilP]

Ah yes, a BMS, not something I ever consider
I would just fit an external plug to monitor balance and balance manually as and when necessary, maybe try and squeeze some of the 2-4s HobbyKing LVC alarms in there as warning

What is the voltage and capacity of standard pack?

If you put in the cell-LVC alarms, be prepared to balance charge regularly, as they do (semi-slowly) imbalance a pack when left plugged in.

Oh bugger, just bought 3 for my girlfriends bike. Not needed to balance the pack since I built the bike. Not even checked it in months. Guess they will go straight in the scrap parts / not used bin as soon as they arrive then. Thanks for the warning

 

[kudos]

What is the voltage and capacity of standard pack?

I believe the standard pack is 19.2V 9ah and the lithium pack is 18.5V 11Ah.

Kudos

 

[The Stig]

Thread dig!!!

Anyone know if the gocycle will accept up to 29.4v? (7s Li-ion), or how I could tell by looking at the controller?

 

[The Stig]

Luckily I have a 24v battery I can wire it up to and see if it runs... but before I do that can anyone tell by looking at it if it would suffer any damage with 29.4v? It has 35v caps.

 

[The Stig]

I spent about 15min searching for a data sheet on this part to see if it will work at ~30V, but cant find one... I can't find this part anywhere. Anyone know where to find it?

This is what seems to be written on the part:

I[symbol?]R P744H
L8J6
[Serial number?]

 

[kudos]

I'm really interested in what you come up with here.

I've always liked the funky design of the gocycle but the one I tested for a while just didn't cut it power wise.

It you could up the voltage like you're trying or just replace the controller altogether it might actually make it usable.

Good luck...

Kudos