Thanks for the info, ordered 1 from taobao.

You didn't say how you wheeze down the hill like an arrow…

not that fast lor.. downhill only 46kmh..

besides, after change to flatbar i already gave an extra non-aerodynamic to the wind compare using dropbar..

can share link bro?
I need one

tested my new bike last weekend. Uphill nearly dead as lack of low gear (3 speed). Flat lack of high gear...
But, Fun and agile
best short distance commuter

This post has been edited by lazyman@home: Dec 4 2017, 10:17 AM


Attached thumbnail(s)

Cheapest, quick release version https://goo.gl/Cvu1RY

Actual klickfix stuff/ kanga rack https://goo.gl/RNC8Vq

What's your chainring and cogs size?

I used to ride a eezz D3, 3 speeds, with the chainring limited to max 42t. 9-11-13T behind.
For me 40t pair with 9-11-13 is the best combination. i can tackle most of the hills with no problem. Slow but light enough to climb.
Tried Mayor hills, pantai hills, langat perez, duta hills etc.

My chainring is 47t, behind 11-13-15. A bit regret not going for 9-13-17 (what they offer at about 100 more). In future maybe I wanna change the chainring to 53t. The seller told me 53t can't use as it touches the folding hinge, but after that I check many other user can use 53t no problem..

11-13-15 has 36% range
9-13-17 has 89% range
11-32 has 190% range.
14-28 has 100% range

If wheel size are same, the gear ratio as follows.
40T chainring, 9t is 40/9 = 4.44
Ditto, 11t is 40/11 = 3.64
42T, 9t is 42/9 = 4.67
42T, 11t is 3.81
47T, 9t is 5.22
47T, 11t is 4.27
53T, 9t is 5.88
53T, 11t is 4.81
52T, 11t is 4.73 (close to 42T, 9t)
52T, 14t is 3.71 (close to 42T, 11t)

52T, 14-28t is about the same as 42T, 11-15t but with 3x wider range.

It's a lot easier and clear when we evaluate the numbers…

Also not all chainring sizes are common. Same for cassette too, hence evaluate the numbers allow you to design your own drive train combo with commonly available components.


This post has been edited by KenC: Dec 5 2017, 03:24 PM

Hi guys
I have this Birdy frame collected some time ago. I had wanted to respray and install a fix front fork and create a lightweight folder.
No time to do this, so I’m offering this to anyone interested before I advertise elsewhere.
Price? Swap you for a couple of set of Kojaks?
PM me!


Attached thumbnail(s)

front fork a bit hard to find for birdy.nevertheless.. do pm me ur interested price

So bloody tempting!
Deep breath… in… out… in… out…

Some useful explanation.

This was what I was thinking of achieving with this Birdy frame...


I will attend to your PMs shortly.



Attached thumbnail(s)

sometimes i add more weight on my dahon speed. 15kg more load on the rack (my son) and riding on dragonbacks. really good to train your legs.

p/s: i do find training with mtb helps strengthen my legs.

This post has been edited by fatani: Dec 7 2017, 11:59 AM

hahahha...this is more effective way

Thank you very much for your interest guys. Sifu Etigge will be performing miracles and making this into some sort of bike.

I will have new go fast tyres and a very nice leather handlebar bag which I will show off when I have it.

Happy riding.

Now, I have lots of these tubes to give away...before you get all excited, note the size. 26 inch, presta valve and the valve is very short, like 25mm.

If you can use them, let me know.



Attached thumbnail(s)