Greyp G12
- Thread starter malylemon
- Start date
ohzee
100 kW
that's sharp. I remember the announcements , but I think this is the 1st I have seen on the board.
skeetab5780
1 MW
Ya i have not seen anything on this in a long time. This is looking sharp!
Drunkskunk
100 GW
Sweet looking ride, and a great color!
Red rocks, but if I had one, it would have to be a Grape Greyp.
Red rocks, but if I had one, it would have to be a Grape Greyp.
Ohbse
10 kW
Glad to see these are out in the wild! Very, very cool bike.
Cromotor, 20s of 20ah A123 pouches, what looks like a Kelly controller? Very cool BMS/Display/management computer. I'm not likely to purchase a complete bike as I have already built something with similar specifications (though much less polish) however I would be very interested in the display/BMS unit if it's available separately? My next bike will be more moped/motorcycle than bicycle and will be likely running dual sabvoton controllers, the ability to monitor and predict range etc would be excellent.
I assume the charger is not onboard?
Cromotor, 20s of 20ah A123 pouches, what looks like a Kelly controller? Very cool BMS/Display/management computer. I'm not likely to purchase a complete bike as I have already built something with similar specifications (though much less polish) however I would be very interested in the display/BMS unit if it's available separately? My next bike will be more moped/motorcycle than bicycle and will be likely running dual sabvoton controllers, the ability to monitor and predict range etc would be excellent.
I assume the charger is not onboard?
macribs
10 MW
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- Jul 22, 2014
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- 3,702
CroDriver said:What do you want to know. I know a thing or two about it
I wonder if this bike is v2 of greyborg or a fork of some sort?
It seems like a greyborg frame, yet the swing arm is not Greyborg. Side covers are also new.
Who are selling this bike and is it legit and in agreement with greyborg bikes in Croatia?
It seems the selenavozila website came to a halt early 2013 without any later updates. And this Greyp website kind of seems like they continue the Greyborg evolution.
Ohbse said:
No, charger is off-board. 10 Amps so it can charge it in 80 minutes.
The display is really just that - a display. The bike is running without it if necessary. There is no "brains" inside the display. Everything is being measured and calculated by the on-board electronics and then just communicated on the display. So the display itself is pretty much worthless.
macribs said:CroDriver said:What do you want to know. I know a thing or two about it
I wonder if this bike is v2 of greyborg or a fork of some sort?
It seems like a greyborg frame, yet the swing arm is not Greyborg. Side covers are also new.
Who are selling this bike and is it legit and in agreement with greyborg bikes in Croatia?
It seems the selenavozila website came to a halt early 2013 without any later updates. And this Greyp website kind of seems like they continue the Greyborg evolution.
You can read the story here: http://www.greyp-bikes.com/about-us
Zvonimir (the genius that has designed the Greyborg) was in charge of the mechanical development of the Greyp G12. The G12 is a from-scratch design with a fairly large engineering team that has executed the project in a professional matter.
Ohbse
10 kW
CroDriver said:
Sorry I should have elaborated, the onboard electronics that manage everything is the thing I personally would be interested in and would have significant interest from many on these forums. BMS, energy management and instrumentation etc as a standalone product is a niche that currently has few good options. The Cycle analyst offers some of that functionality, however misses the battery integration which is key. Adaptto provides all of this, however is integrated with the motor controller which is not always appropriate for every application.
Ohbse said:
No, sorry, it is not available for sale as a stand-alone unit. It is custom developed for the G12 and we will not sell it separately.
Btw. I'm super excited that we have our first bike on the ES forum! And I find it great that the owner modifies it and shares his experiences
Will keep an eye on this thread and tell Kristijan (head of customer relations) and the other guys to open an account and help you guys in case you have any questions.
Of course you can also always contact us directly.
macribs
10 MW
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- 3,702
CroDriver said:
I've already read there but still it is not clear to me what is the original Greyborg frame. Is thre Greyp in any conflict with greyborg? Or is it all above board and in the open? Are Greyp and Greyborg in any way "related" or are they stone cold competitors?
I myself was not aware of the Greyp until a few days ago when I did a frame kit thread here. I was not sure if this Greyp was the v2 of greyborg, or if it was competitor, a fork or even a scam. But again the vozila webpage have been unchanged for a couple of years so to me it really seems that site is gonna end up being abandoned. Then again I could be wrong.
As I said this is still unclear to me. Maybe because of language barrier or could be that I am plain stupid. Anyway you claimed to know a great deal about the Greyp so pls explain all this to me in layman's terms, or like I was a child.Are the two companies related, who is the original designer and which company is still moving forward with design, improvements etc.
macribs said:
Mentioning the word "scam" in context with our brand hardly deserves an answer, but I'll be polite.
Greyborg was an after-work-garage project of Zvonimir before he started to work for Rimac Automobili. It was a frame kit.
Zvonimir started to work in Rimac Automobili 4 years ago. Then we decided to design a "Rimac bike" which ended up being a separate brand - Greyp.
Who designed it? Rimac Automobili employees - mechanical engineers, electrical engineers and designers.
What has it in common with Greyborg? Nothing - it is designed from scratch. The frames are not similar.
Zelena Vozila has the right to still sell Greyborg frames in agreement with Zvonimir.
Frame kits and a polished and thought-out-until-the-last-detail product like the Greyp cannot be compared. It takes 1000X the engineering man-power to make the second.
That being said - the Greyborg kit is a great high-quality product for hobyists that want to build their own bike.
Hope it is clear now.
malylemon said:
68-69 V while charging.
All cells should be above 3,4V (minimum cell voltage will help you to know when that happens).
The cells will settle-down after charging to 3,33 - 3,35V so 66,6 to 67V in total.
But the BMS takes care of that - you don't have to look at the voltages. The State of Charge calculation is very accurate.
The SoC of Lithium Iron Phosphate cells cannot be determined by looking at the cell voltage - except when they are completely charged or completely discharged. The BMS counts the energy that goes into and out of the pack to determine the SoC.
Hope that helps.
macribs
10 MW
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- 3,702
CroDriver said:
Sorry for my choice of words. I did not mean disrespect, it was more that I struggled to understand where this Greyp came from. After I put a link to your website in a post I got PM's asking about if greyp was intellectual property violating. I did not know the answer to that so that is why I asked you to explain for me. Pardon my poor choice of wording. IP rights have had some pages written about it the past week so I felt it was urgent to clarify how things are with Greyp.
I feel you cleared that up 100% so again sorry for my choice of words.
aCeMadMod
1 kW
it so cheap , better then a Big mac
www.greyp-bikes.com/order Price: 6.500,00 EUR,,
mid drive sill King for a real ebike
www.greyp-bikes.com/order Price: 6.500,00 EUR,,
mid drive sill King for a real ebike
thanks for all info.
the problem is that no matter how aggressive or gently rides can not get any close to the specified value (I mean the range).
max range i did with pedal assist on eco mode is 50km.
so far from spec on greyp web.
120km street mode
100 km eco mode
80km Power mode
this spec is everywhere any web about greyp.
how many Ah is those battery's?
the problem is that no matter how aggressive or gently rides can not get any close to the specified value (I mean the range).
max range i did with pedal assist on eco mode is 50km.
so far from spec on greyp web.
120km street mode
100 km eco mode
80km Power mode
this spec is everywhere any web about greyp.
how many Ah is those battery's?
CroDriver said:
64V / 20 Ah / 1,3 kWh
We have customers that exceed the rates range - we sometimes see 150 km or more range.
We are limiting the battery usage to 14 Ah - so there is still 30% left when you hit 0% SoC. We do this to protect the battery and to enable a longer battery life. A software upgrade can allow you to use the battery beyond 0% so you can have 30% more range. It should not influence the battery life as the BMS still protect the cells
However, you should have no problems achieving 80 and more kilometers with your software limitation.
Do any of the cells drop below 3.1V open circuit voltage (stationary, no throttle applied) when you are close to 0%?
What is your typical consumption (Wh/km) in a full cycle?
We have customers that exceed the rates range - we sometimes see 150 km or more range.
We are limiting the battery usage to 14 Ah - so there is still 30% left when you hit 0% SoC. We do this to protect the battery and to enable a longer battery life. A software upgrade can allow you to use the battery beyond 0% so you can have 30% more range. It should not influence the battery life as the BMS still protect the cells
However, you should have no problems achieving 80 and more kilometers with your software limitation.
Do any of the cells drop below 3.1V open circuit voltage (stationary, no throttle applied) when you are close to 0%?
What is your typical consumption (Wh/km) in a full cycle?
windtrader
1 kW
I strongly suggest you change this photo on your website to make clear there is no direct relationship between Rimac and Greyborg. The picture clearly conveys a different impression than what your company represents.
