QUOTE(azamunekurone @ Oct 31 2014, 11:54 AM)
its for rolling purpose like trolley.fold and roll
must ask 1st is the bb come in package.usually in one package.usually all bb in stdt size.my friend already change the crank without change the bb.unless the crank stated different sized of bb..
44/32/22 are not the best ratio for folding bike IMHO,my old mongoose bike also used that ratio but i change it to 52/39 and its good!but if u indeed purpose ur fb as cadence machine,so can use that ratio.will pedal like cartoon lah...
for good upgrades,
the fd i think u need to get 3x10 better lah.no need to buy again when u already on 10speed

Before you all go jumping into the triple crank, I think I better explain the complexities. The normal triple for foldie is road bike type which is 52.42.30T and not the MTB chainring.
When you buy triple crank , especially from the guy posted up there, don't get the Truvativ ones, he has other 2 types which are square tapered ones. The square tapered ones fits directly into most existing bottom brackets. If you insist on the Truvativ one, buy the bottom bracket as well. I think he has ordered. This guy charges you RM20 for courier but the charges are always less than RM10. So, negotiate before hand. The other 2 brands, Prowell and another chinese branded ones are also OK larr! The Truvativ uses the power spline BB which is now not in production but there are still stocks here and there.
Also it is better to use double crank though. The gear inches for a triple is
94.54 inches ( if you use the 11T at the rear) to
18.75 inches (if you use 32T at the rear). Whilst if you use double chainring the gear inches will range from
94.54 inches to 24.37 inches which is 6 inches less than a triple. The advantage is immense though if you use a double as the shifting is smoother than a triple. If you insist on a triple chainring, you HAVE to get the FD adapter similar to the Lite Pro type. The other type as use by Java bikes (the rectangular type) is unable to shift properly. Also for a triple you need either a longer spindle BB eg. 126mm or at least 122 mm which is hard to come by. This is because the adapter with the FD range is limited. Either that or get the Token spacers and add accordingly.
Also when you fit in the triple, when the granny gear is in use (the smallest chainring), the last four settings on the rear cassette is not usable. Means you can only use the last 4 or 6 (depending on how many speed your RD is). This is because the chain will sag ( londeh!) You cannot shorten anymore as well because the big chainring with the largest cassette setting needs a longer chain. This is because the chain stay of a foldie is not as long as the normal sized bike. Also you will need a long caged RD, I use them and at the last setting the pulley is about 2 inches from the ground but at this setting we are riding slow anyway so no danger there. Also if you use 2.0 tires (like the Big Apple) , the pulley is already touching the tires. I use a 1.75 inch Maxxis , so it is OK.
Anyway, you will improve when you ride a lot. So, just be patient and keep on riding. The granny gear on my bike is redundant anyway and is never engaged at all nowadays as the middle ring is sufficient to even ride up to Fraser's Hill. This is 42T and if the bike was a 39T second ring, it will even be much more easier. So, my suggestion, double is more than enough. If a double is still hard to pedal, you can switch to a compact crank later which is 50/34 T.
The pulley at the lowest settings using long cage. The chain needs to be adjusted in length carefully.

The sagging chain when granny gear is used. The last smallest cogs are not usable but the same ratios are also found using the middle ring.

The pulley at the largest cog, very near the tires and 2.0 inch tires like Big Apple are not usble!