when is the next 200km..i shall take up the chalen

We met at last 20km at the kedai runcit at a junction. i'm the guy with red ridley roadbike.

Aiyah, pity I wasn’t in the country, otherwise piece of cake lah!!

Hahaha!

Sitting in aircond room drinking coffee, typing this...

😅😅😅

Ahhh... i remember..near air jagung kan..am totally flat that time 😂. Luckly that sundry shop got fan and the taukeh was nice enough allowing us to sit inside chilling. The heat was unbearable man. Nice meeting you btw.

I wonder a folding bike in a luagage bag can survive this...

https://youtu.be/9MZqiE3yGlQ

https://audaxmalaysia.com/new-season-2018/

Done ! I have managed to install a 11/42T - 10 speed cassette on a folding bike. A bit tricky but very possible. Mine was a bit hard because of the pivot fold folding system (like Brompton, Birdy) but the system is very much easier on a regular folding bikes , regardless if it is dolphin shaped or otherwise.

Problem was encountered during the lowest 2 gears, 36 and 42 teeth setting. The chain was jumping out of the pulleys on the cage. Found out that the chain was out of alignment too much. Check the BB and the spindle (square tapered) was too long. It was 127.5mm and this makes the crank too far out to align. Changed to a 110mm unit and it was OK but another problem arises. The chain was rubbing the sides of the rear stays but this only happens on my particular bike. If it is a Dahon Speed design or any dolphin shaped design, this will not be an issue.

Another issue was the chain sag. If I were to adjust the chain like what we do normally, the RD cage will hit the ground when the chain is on the 36 and 42 teeth setting. So, we have to adjust the chain at such a length that the chain will pull the RD forward (instead of downwards) at the biggest cogs setting. After finalising the length, the RD cage looks like it was in a high setting even though it ws the lowest ( 11teeth setting) but it doesn't matter. The lowest the RD cage came was on the 6th and 7th gear but it still didn't touch the ground. It will help if yours wheels are 451s which is even higher as this is a 406.

Reminder, this will be OK for experienced riders but not recommended for newbies as the RD cage very near the ground. BUt even if you were to sweep the corner and leaning at 45 degree , the cage still won't hit the ground. Just becareful of kerbs and rocks, that's all.

Now this bike is lighter and with 42 teeth maximum , it can do Fraser's Hill easily with single chain ring.

RD cage resting position.



RD cage lowest point !



RD cage position on 42 teeth setting.

Woah, that's a pretty 'low' cage you got there sifu. I'd freak out if i got similar setting on mine. I wonder how will the hanger hold up. Interesting stuff!

There's another way to shorten the cage. You can actually get a shorter cage RD and then add a goat's link. But the newer generation Shimano RDs actually have a goat's link attached. Anyway, those near settings, we don't use them often, only when we trudge uphill and even that, the speed might be only 6 km/h . So, there's no danger of hitting the cage.

Nice meeting you! I'm glad the sun only start at 1 ish 2pm, the long flat stretch at 11-12pm was shady. I cant imagine doing this audax with 16" man, damn tough la you.

Brilliant! The long cage looks really marginal but as long as it works, can lah!
Now I run out of excuses to no change my freewheel hub…

Sifu, what is the distance of the chainring to the centerline of the seat tube? And thinking if fitting the single chainring to the inside position and finally have a bash guard on the outside.

Honestly, I didn't actually measure the distance. I kinda slap everything on it and see. The bike came with a very long spindle bottom bracket and in the beginning, I had problems on the last 2 gears. The chain kept jumping out of the cage pulley. Then I got another shorter BB and this brought the chainring nearer to the seat tube and from this workable setup, the chain is aligned straight with the chainring at the 6th gear. If you can get this setting, it should work. You can add spacers if the spindle is too short to bring the chain ring a bit further away.

Another point I omitted in my comment. I have to add chain links to the new 116 link as it was too short.

11-42t? Wow!
I agree that when you are on that gear, you will be crawling, so the chances of hitting anything would be slim. Only thing to watch for us when fitting wider tyres as the RD cage could rub the side of the tyre.

Quite true. When I did a 3 x 9 speed on my Dahon a few years ago, I was using Big Apples and even with an LX rear derailleurs, the cage rubbed the tires at the 32 teeth cog and 52 teeth chainring.

What about 4600 shifter + 4700 rd. Any experience?

guys, don't over exert yourself when riding, i was on my morning ride at GCE saw one cyclist drop dead by the lane. I stopped get his driver's license from highway patrol, and post it on FB, take his phone try to call whoever that resembles family members and finally got to his wife. very healthy male 55 years old test riding his brand new s works fully equipped with power meter etc etc. after a long way finally his body was sent to sg buloh hospital for post mortem. i think he has got cardiac arrest. it didn't help when ambulance took like 30 mins to arrive. when i arrive i heard he was dead for 30 mins already.

Every other month we get fatal case on cycling… Be safe everyone. It's a vigorous sport after all.
Stay below 20km/h average speed and live another day.

That is why for me, having a chest strap HRM is such an important feature. So that i can monitor my safe heart rate limit during cycling. Don't overpush yourself more than your body can handle. Know your limits.

What about those smart watches with heart rate reading? Are they accurate?

Due to the location of the sensor, wrist sensor data is not as reliable a chest strap (even the hi end one).Many variables affects the reading. It may be good for running though. But i dont think it'll provide accurate data for fitness or cycling, due to a lot of movement on the wrist. Also, sweat also will kacau sensor too.