Anyone use this kind of ABS protective seat post cover ? Claim to be able to reduce the scratch on seat post but wonder how reliable is it ?

This looks good. Always been thinking of changing but the cost are way too high. Thanks for sharing 👍👍👍

A forummer here wants to upgrade his Tern C7 with a triple chainring. The original gear inches is now from 74.28 GI to 37.14 GI. ( GI is gear inches and the smaller the GI the lower the gear [meaning easier to pedal] ). That means the variation is from the figures mentioned. If you add a triple in front , the variation goes from ,

biggest chainring 52 teeth - 74.28 GI to 37.14 GI
middle chain ring 42 teeth - 60.00 GI to 30.00 GI
smallest chain ring 30 teeth - 40.00 GI to 21.42 GI

As you can see, there are many over lappings between the 3 ratios and ultimately the gear ratios for such modifications is from 74.28 GI to 21.42 GI.
If you use double chainring setup the variation is ;

big chainring 52T - 74.28 GI to 37.14 GI
small chainring 39 teeth - 55.71 GI to 27.85 GI

that means the gear varies from 74.28 GI to 27.85 GI and that's not very far between a triple and the double but the double provides a very trouble free shifting and smoother too.

Another alternative is to upgrade the rear to 9 speed ( off course if you have the dough you can go straight to 10 speed for more smoother shifting ).

chain ring 52 teeth with 11T/32T = 32T being the maximum I suggest although there are 36T also. This is to ensure that the rear derailleur cage don't hit the ground or the rims.

This setup gives a variation of 94.54 GI to 32.5 GI. The higher gear means you can pedal faster on a flat or even pedal downhill where else in the above configurations, you will be free wheeling on flats with the smallest 14 teeth cog at the rear.

The drawback of the first option is, when you have attain some level of fitness and when you want to pedal faster, you CANNOT as the rear's smallest is 14 teeth. And when you want to upgrade again, you have to start all over again. That's because the 7 speed set up is different from 8,9 and 10 speed. You cannot use the shifters, chainrings/crank and almost everything have to be changed and the money on the first mod is wasted. That's why I always suggest modifying the rear first and go through the ardous task to pedalling in higher GI to train your legs. And once you attained this, modifying the front will give you all the advantage of 94.54 GI to 17.5 GI.

For one, I think it is better to train our fitness to a level where it is comfortable to ride without changing gears at the Putrajaya lakeside. Presume your comfort level on flats is 52 front and 14 rear (the highest gear on a 7 speed setup) , you ride constantly and until a level it's is easy. When you want to ride even faster or further (because there must be variation for long distance rides) you can't because that's the maximum. So, that's why the smaller rear cogs will be needed once you have attain the level of fitness. There are some drawbacks on triple chainring setups as there are a few ratios you can never use because the chain is sagging on the smallest chainring and on two or three smallest rear cogs. So, this configurations are not usable but the GI can be found with the middle chain rings though.

Many new riders are making a mistake on relying on easier gear ratio (lower) to tackle hills without trying to train harder to a better level of fitness. I think this is because they ride in a group and try to catch up with other more experienced riders. every rider have to go through the phase, there are no short cuts, of course unless you fit in an electric motor. My point is, having more gears are good but we still need to train our fitness level.

Just for comparison sake, the gear inches for a 30 speed 26 inch mountain bike is 104 GI to 15.88 GI. The lower gear is because the chain ring is smaller than the largest rear cog.

This post has been edited by etigge: Nov 6 2015, 12:08 PM

Ok friends, it is now time for me to get serious. I've just sold my Dahon Vitesse, so I'm now left with the Giant Halfway, the Brompton and Bike Friday Tikit.

I will be putting up the Brompton for sale so if there are any Brompton fans out there looking to buy a "like new" one at a discounted price, please PM me. The specs are as follows:

Brompton S6R (Straight handlebar, 6 speed with rear rack and full mudguards)
Schwalbe Marathon tyres
Colour : Yellow
Front luggage block

Condition : Mint
Mileage : soooo low, tyres show no wear.
No maintenance required at all.

I'm back in KL for Christmas, so can bring it back with me. Unless I sell it here beforehand. If you are keen, please let me know. You will not buy a better example. Check what you can buy locally and then give me an offer (no crazy prices lah...) Both must win to seal the deal.

I agree with you now..... I used to think of easier way till I realise it's better to train your fitness rather than relaying on the bike.

to taiping with love!

kambing to msia....
look at the price in japang.....

OCBC ASEAN Cycle Fest 2015. Didn't finish the 45km. Back pain strike again. (T__T)

its time to get 290mm 12° t-bar handlepost

What is the possible upgrade for this shifter above ?
May I know can I change new shifter but use the existing cable and housing ?

If you want to upgrade this, you have to upgrade 2 items. The brake levers and also the shifter itself. You can go for Shimano Deore brake levers and also the Shimano 8 speed shifters. Yes you can use back the original cables and housing. If you are upgrading both the items, might as well add another 100 plus bucks and upgrade to Deore V-brakes as well, that is if you are using V-brakes lah!

That's like more than RM10k!

JPY305k = RM10.7k @@"

but the bike really look deadly~ lol

like birdy price alredy

This post has been edited by ssyycc: Nov 9 2015, 09:54 PM

retail price in sg is 3899SGD

msia i think abit lower gua... mebe 9.99 liddat

dun dare to put the price...
http://www.baikbike.com/sneak-preview-tern...ic-disc-brakes/







This post has been edited by H2D: Nov 9 2015, 10:39 PM

FSIR folding bike by Fnhon

not exactly easy and fast fold... just a bit different...







http://www.innercityrhythm.com/product-cat/fsir/

http://www.fsirbike.com/

http://fsir.cn/en/

Unfortunately I'm using disc brake. Where can I download guides on how to disassemble the shifter and brake levers cable ? Can't seem to find it in Youtube. One more thing, can I use 9/10 x 3 speed shifter although my existing gear is only 8x2. Plan to change to smoother shifter and brake level first then gear in the future

You can only match exactly the number of gears for the rear gears, eg. 8 speed for 8 speed and 9 speed for 9 speed. As for the front, all can be used. So, if you want to buy part by part, you have to buy the 9 speed first and then keep till you complete buying all the needed components. Most shifters and brakes operates the same way, there are many videos on Youtube about changing gear cables or shifter cables. I think you are searching the wrong description.

https://www.youtube.com/watch?v=O7bKwvYNBpY

my recovery ride after some serious touring



anyway, happy diwali everyone from us @ #ipohfoldies