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 Folding Bicycles v5 - Not only Folding Bikes, Folding bicycle discussion

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gck
post Aug 3 2016, 05:31 PM

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i am still actively looking for Brompton, malaysia importer really overpriced the bike.
gck
post Oct 11 2016, 11:29 AM

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Boss, if modify front crank to double crank ok ka?
what parts do i neeD?, i got a tern link P9

QUOTE(azamunekurone @ Oct 10 2016, 07:54 PM)
im doing round island yesterday at penang,
since i saw tern has been mention. this is my friend x10 (upgrade to 20speed) and my p9 (also upgrade to 20speed with 451 wheelset

user posted image

and guess what, when i measure the weight, mine are even lighter and cheaper after the modification done laugh.gif
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gck
post Oct 12 2016, 03:48 PM

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Verge N8 is asian geometry they say, i am 6 ft tall and i find it not suitable for me though. My P9 is just nice.
gck
post Oct 12 2016, 04:30 PM

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Well, I tried EEZZ, frankly brompton did a better job though.
shorter wheelbase, a bit wobbly compared to 20" counterpart.
in a train no much difference in space it occupied, i say go with verge n8

QUOTE(small_fish18 @ Oct 12 2016, 03:38 PM)
Hi guys, need some advice.

I'm thinking to get an extra bike.
Struggling between a Dahon eezz D3 or a Tern Verge N8.

Initially was only eezz but the offer on the verge are too tempting.

Only thing now i cant test ride a 16" bike.

The main usage of this bike will be mixed transport commuting. with lrt or bus so the 3 speed not really a problem for me.

Anyone try this eezz before? what's your opinion about this bike?
Can push around when it's fold? Cant find any shop that have a ready stock to try.
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gck
post Oct 13 2016, 09:13 AM

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bro how mucho u bought it for?
QUOTE(small_fish18 @ Oct 13 2016, 12:37 AM)
I was once a fixed gear rider so I think it should be good enough for my daily commuting. Even when I go around with my RB and 7 speed foldie I also stay at a gear most of the time.

Anyway thanks for the advise. Now I can't wait for my new bike  icon_rolleyes.gif  icon_rolleyes.gif
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gck
post Oct 17 2016, 11:27 AM

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i got a tern link p9 with stupid neo RD, now have to buy the hanger, and thinking of upgrading to 10sp terus.

gck
post Oct 17 2016, 05:51 PM

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yes bro, i am thinking if i want to sell my tern p9 and straight away buy a d16 instead of going all the way to mod it.
buy that time 3k plus never think much, not that neo is not good, but i want to upgrade to front double crank it is better with non neo derailleur.

QUOTE(etigge @ Oct 17 2016, 01:08 PM)
Better check if your Tern has a RD hanger  blink.gif  I have modded a few of them and as I recalled those days when they use Neo Rd, the bike don't have RD hangers. You need to buy the RD hanger adapters and I don't know if they still produce these hangers as Terns have also stopped using Neos already. All the newer generation Tern bikes comes with hangers already.

The blardy kit cost SGD70 and the local importer didn't bring in last time and I am not sure if they bring in already  rclxub.gif  There is a cheaper alternative but it breaks easily when your bike falls down and when the RD hits the ground, the first thing to break is the adapter hanger! The original kit is off course more hardy.

user posted image

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gck
post Oct 17 2016, 07:13 PM

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I already got dual FSA front crankset, one unit Claris FD,
I am short of shifters 2x9 assuming i use back my 9sp behind, one unit RD, RD converter & FD bracket
not sure if it is cost effective?

QUOTE(etigge @ Oct 17 2016, 07:01 PM)
I think you should go ahead and mod it because if you mod it, you will get a better drivetrains than the stock that d16 gives. If you get that adapter and put in a Sora chainring (off course better if you can afford a Tiagra but Tiagra is expensive now!  rclxub.gif ). Then again Sora is still a hollowtech crank. At least it is lighter and more fluid than the square taper that original equipment provides. Yes, Sora is 9 sped but it will work with 10 speed chain and 10 speed cassette.  A Tiagra RD and a pair of Tiagra shifters plus cassette off course.

Even the 2 x 9 speed Sora is better than the stock drivetrain that Tern D16 comes equipped with. Compared with this,

Shifter(s): Shimano trigger, 8 spd  Non series Shimano
Front Derailleur: Microshift, forged aluminium, chain catcher Non Shimano
Rear Derailleur: Shimano Claris entry level 8 speeder
Crankset: Cold-forged 6061 aluminum crank arms, hand-polished Non Series
Cassette/Freewheel: Sunrace 8 spd., 11-30T low budgetted cassette
Bottom Bracket: Cartridge, sealed bearings heavy square taper BB, some even called it a Legacy BB
Chain: KMC 8spd., narrow

I rather mod my bike with better groupset  icon_rolleyes.gif
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gck
post Oct 17 2016, 09:36 PM

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Where bro


QUOTE(fatani @ Oct 17 2016, 07:39 PM)
Bro, better upgrade to 10 speed terus! I got quoted rm590 9 speed and rm610 for 10 speed..(cassette,deore rd, deore shifters, chains,installation and tuning)..since it was only rm30 in difference, it was really an easy decision!..

Fd bracket is only rm50.
Claris fd can use back.

If you want to maintain using 9 speed, that your budget is much cheaper.
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gck
post Oct 18 2016, 12:34 PM

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Got one seller online discourage me from converting front compact crank to Shimano hollowtech 2 saying difficult To tune and bla bla...



QUOTE(etigge @ Oct 18 2016, 08:27 AM)
A bike's drivetrain works in tandem with many parts of the bike's moving parts and the number of bearings in a comprlete bike is numerous, the BB, the hubs, pedals, the RD cage rollers. It all makes the bike easier to pedal when the bearings are smooth. Although many are sceptical when comes to the effectiveness of these advantages, they do help in some ways. A little here and a little there will make a bigger help on the whole.

While some are not so critical some are. In the case of the hollowtech crank, the biggest advantage is the weight. Imagine you turning a big wheel made of rock and also turning a wheel made of fibreglass, which is easier to turn. Off course it is the lighter one, right? Same principle. That's why a roadbike weighing 8 kgs is so much faster on the road compared to a 12 kgs foldies eventhough the wheels of the foldies are smaller and easier to pedal. But weight to us is not so critical as we don't ride competitively but not to the extent of weighing 30 to 50 percent more.

It all comes to priority. Weight is expensive in cycling. A kilo lighter may cost over thousands  rclxub.gif So, priority is the keyword. Off course if you can afford, get the lightest.  biggrin.gif

Secondly, the hollowtech bearings have less tolerance making it more precision. This makes the bearings more lasting. I have taken out many square tapered BB and most of them are loose although the bearings are fine. In hollowtech the spindle of the crank is fixed directly to the cranks while in square taper, the spindle is incorporated with the BB itself. The spindle is solid metal making it heavy while hollowtech's is hollow, hence the term hollowtech. The hollowtech's BB seals are also better and more dust and mud resistant and this makes them last longer.

Finally, this is my own experience though. The square taper needs a torque wrench to bolt the crank on and most of time, we all don't use it as not all have a torque wrench. Even if a bike shop have it, they don't use it either  biggrin.gif  We all depend on guessing the torque or as hard as our hands can exert when bolting on. This makes the tapering on the cranks widens. So, the next time you change a BB, it don't really fit and bolting, it seems OK. Then during a ride, when it loosens a bit (it will, it always does) we hear the irritating .....creak...creak....creak  doh.gif
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gck
post Oct 19 2016, 11:12 AM

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which bike shop in KL area provide good bike service with reasonable price?
I need to replace my RD cable and tuning neo RD
gck
post Dec 8 2016, 11:16 AM

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sifu sifu
I currently got a Tern Link P9 with Neo RD
I wish to change it to dual crank setup while retaining the 9sp or upgrade to 10sp if the price is not too prohibitive.

What i have purchased so far
RD Hanger ori Tern
FD Hanger
Claris FD
Compact dual crank.

I further assume that i won't be able to use back my SRAM Rear shifters
So now i need the following

RD
2x9 shifters

Appreciate if sifu here can advise which is the best way to go about this upgrades.
gck
post Dec 15 2016, 09:59 AM

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got group ride? can i join?
gck
post Dec 28 2016, 03:08 PM

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I went to a cheap route in upgrading my P9 with Neo RD to a full 18 speed.

1. Use back existing crank just add second chain ring. (estimated RM30)
2. buy a cheap 9sp sora+ Original Tern RD adaptor. Total RM180
3. cheap claris FD+ 3rd party front RD holder+ cheap shimano shifter(non indexed for RM19)Total RM100

I spend quite a lot on Original Tern RD hanger , but i recon it is of better quality.

Overall quite happy with the mod, now i just need to test ride it.



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gck
post Dec 31 2016, 12:14 PM

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Sifu Sifu
following my earlier post in upgrading my bike to dual crank and rear Sora derailluer i am currently facing the problem of not able to shift beyond 8th cog, 9th is unreachable.

I am currently having this rear set up

Sram Attack Twist shifter-original from tern p9
Cassette 11t 32t
Sora RD3500 SS- short cage

I checked the RD should be able to support 32t behind and the total capacity stated on shimano website is 37T well enough..

still wondering what happened?
gck
post Jan 1 2017, 09:34 AM

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Thanks bro, it turn out that i got High Low limit screw mixed up, Thanks for your hint, i got it up and running, really luck that my RD can fit all the gears perfectly.

QUOTE(etigge @ Dec 31 2016, 12:52 PM)
I doubt the short cage can go 32T rear. Optimally, the limit is only 28T . What are the symptoms, did the twist shifter go all the way till the last setting? Or it just stopped at 8th? If this is the case then the limit screw needs to be loosen a turn or two at the RD. The SRAM Attack shifters are Shimano compatible, that's a fact, so no issues there.

Most likely is the limiter screws at the RD. Loosen the screw no 2 a turn and see. If cannot another turn until it can shift. Be careful ! Not too much, if too much, the chain will fall over the cogs and get jam in with the spokes! Also apart from the 2 screws, there is another tension screw (single one only). Screw this till maximum as you want the top pulley to be as far away from the cassette because you are not only maximizing but over maxing the reach of the RD.

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gck
post Jan 6 2017, 07:44 AM

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Just share with you my setup and mod from 9speed to 18 speed.

Original.
Tern Neo RD for 9 speed.
Front single chainring crank.
Original SRAM Attack Twist Shifter.
Cassette 11t to 32T

Mod
1. Tern RD Hanger
2. Sora 9 speed RD.(short cage works, mine is SS short Cage)
3. Claris FD
4. Front RD Bracket
5. Shimano Non Series/Non Indexed Shifters-RM19

The rest i can use back i use back.
Work like charm.

I think if ur shifter is alivio 9sp it should work with road RD, 9 speed is rather flexible.
I use SRAM shifter for both Road RD and MTB RD, but only limited to 9 speed.

But be aware that anything 10sp and above you should not mix the Derailluer and shifter between road n MTB, they are of different pull ratio.
I might be wrong. correct me if i am
gck
post Jan 6 2017, 10:37 AM

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to me 8 is more than enough, i rather have front double and 8 behind than single crank but 10 behind.

it is the matter of finding the perfect gearing.
gck
post Jan 8 2017, 03:55 PM

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raleigh ugo, no complain la, 80 to 120kg no prob.
Probably a bit heavy but value for money quality components.

QUOTE(PLa5teRz @ Jan 8 2017, 03:10 PM)
Fuhhh!! Super nice. It is suitable for a man that weight around 80-110kg?
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gck
post Jan 12 2017, 04:44 PM

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square BB and crank has been with me for long long time, i find them with no fault on my folding bike.

i habour a dream of doing long distance touring, if i were to do that , i will choose square bb over other tech as parts are plentiful.


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