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View Full Version : Gearbox ratios for CG200 anyone knows?


Kivi
06-16-2019, 04:31 AM
Hi
I need 1-5 speed gearbox tooth count for input/output shafts for CG200 bikes, if anyone knows?
Thanks!

Mudflap
06-17-2019, 10:46 AM
Not all CG200s have the same ratios. Some where I have ratios for the Lifan 163FML and a Zongshen 167FML.

Kivi
06-18-2019, 08:39 AM
I have a spare transmission and i counted the tooth on Input and Output shafts.

I. O.
1. 13:37
2. 17:32
3. 20:28
4. 23:26
5. 25:24
But, the transmission in my Keeway - Zongshen is different, I don't know all gears tooth count, I only know for second gear, and it is I15 O28. So, it has close similar ratio in 2nd, but less tooths, tooths are bigger.
I need new gears for third speed, because they are damaged and worn. I wonder if to use this spare gearbox shafts and gears or I need to buy another transmission. So i need some confirmation about the gear ratios of other bikes.

humanbeing
06-18-2019, 10:36 PM
Typical 3rd had 2 settings: https://item.taobao.com/item.htm?id=550156420505
http://gd4.alicdn.com/imgextra/i2/4128488212/O1CN01VM7V5S2AX91eRKLTn_!!4128488212.jpg
---
For trike Zongshen CG200:
http://gd1.alicdn.com/imgextra/i1/3517474394/O1CN01aYquSh1iKUnCA998R_!!3517474394.jpg
http://gd3.alicdn.com/imgextra/i3/3517474394/O1CN01s9o2Ew1iKUnAY0oIF_!!3517474394.jpg

Kivi
06-24-2019, 07:28 PM
Typical 3rd had 2 settings: https://item.taobao.com/item.htm?id=550156420505
http://gd4.alicdn.com/imgextra/i2/4128488212/O1CN01VM7V5S2AX91eRKLTn_!!4128488212.jpg
---
For trike Zongshen CG200:


This was of great help, HB! My gearbox in Zongshen was exactly like that.
But, the third gear had severe damage, on both gears. The reason may be that the 3rd gears are thinner than the others. I will attach a pic of the gears later.
I ended up putting first 4 gears from my spare gearbox, and kept the 5th gear from Zongshen original. The reason is I could not combine org and spare gears. I ended up with little faster 1st and 4th gear, littttle slower 2nd and 3rd, and the same 5th. Here are the ratios:

1st org>
32/11= 2.90
1st spare>
36/13= 2.77 *

2nd org>
28/15= 1.87
2nd spare>
32/17= 1.88 *

3rd org>
25/18= 1.39
3rd spare>
28/20= 1.4*

4th org>
23/20= 1.15
4th spare>
26/23= 1.13 *

5th org>
21/22= 0.954 *
5th spare>
24/25= 0.96

* denotes ratio currently in my bike.
Great is I now have normal 3rd gear, with full power and no whining noise.
And just to note, my primary reduction is 3.333 (70/21).