YM Bike Service & Coaching

YM Bike Service & Coaching Bike servicing, packing, transport, and bike maintenance coaching. Click the WhatsApp button below to book an appointment.

Free service.A foreign construction worker came in with this bike at 9.45am today. We actually start work at 2pm on week...
13/06/2026

Free service.

A foreign construction worker came in with this bike at 9.45am today. We actually start work at 2pm on weekends as we ride in the morning and had just returned.

Since he was already here, we took a look at his bike. The upper pulley wheel had come off and he had screwed it back by himself, but the chain had been routed incorrectly and the upper pulley wheel was not properly tightened.

This is usually a simple job. We would just need to remove the upper pulley wheel, reroute the chain correctly, and reinstall the pulley wheel.

However, it was not straightforward and ended up taking us more than 1.5 hours because:

1 - Due to the poor design of this derailleur, the derailleur body blocks access to the upper pulley wheel screw, forcing the screwdriver to be used at a slanted angle so it tends to slant the upper pulley wheel screw.

2 - We then had to remove the lower pulley wheel so that the chain could be completely disengaged, making it easier to reinstall the upper pulley wheel properly.

3 - When we attempted to reassemble the lower pulley wheel, we found that the derailleur cage plate was bent, which affected the alignment of the lower pulley wheel screw and thread engagement. It is likely that this may have been bent when someone attempted to force the upper pulley wheel screw into position. Despite multiple attempts to correct the alignment, the screw could not be properly secured.

In the end, we managed to reroute the chain correctly and the owner left with the bike by 11.30am.

However, due to the bent derailleur cage plate, the lower pulley wheel could not be securely fastened as the screw could not properly engage the threaded hole despite multiple attempts to realign it. This means the assembly could not be fully secured and will become loose again during use.

We were touched by the owner's honest behaviour, and as a result we carried out the repair free of charge, despite being quite tired after our ride.

Our client brought in two bikes to remove the pedals and front wheel for bike packing.During transport to our shop, she ...
10/06/2026

Our client brought in two bikes to remove the pedals and front wheel for bike packing.

During transport to our shop, she accidentally got her handbag entangled in the chain, as shown in one of the photos, which we helped to disentangle. Can you figure out how this can happen?

One of the bikes also uses a quick-release thru axle, which took us some time to figure out how to remove.

We later found that it is called the SR Suntour Q-LOC thru-axle quick-release system. The correct procedure is to push to retract the protruding part and then twist to lock it in place first, before pulling out the axle.

In our one-to-one basic bike maintenance course, we always have a lot of experience and information to share.As serious ...
10/06/2026

In our one-to-one basic bike maintenance course, we always have a lot of experience and information to share.

As serious cyclists, trained bike fitters, and experienced mechanics, we have accumulated a wealth of practical knowledge from both riding and working on bicycles.

However, we need to focus on the areas that concern our client most.

Otherwise, it can become overwhelming and our client may lose focus. This is something that is not possible in a one-to-many classroom setting.

08/06/2026

Sharing:

Here is a short video showing how to remove square or round brake pads with a spring clip in between, the type commonly used on mechanical disc brakes that do not use a retaining split pin, cotter pin, or retaining bolt to secure the pads.

We could not find clear information online showing how to change this type of brake pads, so we made this video to share.

This is often much more difficult and time-consuming to replace compared to hydraulic disc brake pads.

For this demonstration, we used a Promax Render R brake as an example.

SharingRecently, I came across an article from PCMag comparing Fitbit and Oura Gen 4. Since I wear these two devices, as...
05/06/2026

Sharing

Recently, I came across an article from PCMag comparing Fitbit and Oura Gen 4. Since I wear these two devices, as well as Garmin, I will share my experience.

Heart rate: In short, Garmin is good for heart rate tracking and is probably the best of the three for HR.

Proof: I placed my Garmin Edge showing chest strap HR data side by side with the Garmin app on my phone showing watch data, and they match very closely, which is impressive.

Sleep: However, Garmin is extremely poor for sleep tracking. For example, while I was reading a book, it registered that I was sleeping, which is something I have never experienced with Fitbit or Oura Gen 4.

Comparison of Oura Gen 4 and Fitbit.

The Oura ring is supposed to be the most accurate for sleep based on research data, and I find this to be indeed true, with very impressive accuracy in my experience, but it comes with a subscription cost, which is its main disadvantage.

It is also very easy to scratch, especially during bike work. Wearing Fitbit on the wrist is much less prone to scratches. I bought a silicone cover for the Oura, but it stops charging when placed on the charger due to the added height from the silicone thickness, and it is too troublesome having to keep removing the silicone each time I charge it.

Another disadvantage of Oura ring is that it is easy to lose. Every time you wash your hands, if you remove it, there is a high chance you may forget to wear it again.

Fitbit and Oura gen4, on the other hand, are not very accurate for heart rate.

Comparing Fitbit and Oura sleep data, I will say they are close enough. Though Fitbit is not as accurate as Oura based on research data, we can say that Fitbit is good enough.

Reference :

https://www.pcmag.com/comparisons/fitbit-air-vs-oura-ring-wrist-or-finger-for-the-future-of-wellness

Delayed post.This was screen captured on 24 May.We now have 240 Google reviews, with an average of 5 stars.We will conti...
05/06/2026

Delayed post.

This was screen captured on 24 May.

We now have 240 Google reviews, with an average of 5 stars.

We will continue to update regularly, every 5 reviews as usual, in case Google deletes our page as they had accidentally done so before and we lost everything before they recovered it.

https://share.google/TgjCGPWQvaerIeVR2

Chain was thrown off on Shimano Di2 7150 12-speed groupset. This resulted in deep scratches on the carbon frame and a to...
05/06/2026

Chain was thrown off on Shimano Di2 7150 12-speed groupset. This resulted in deep scratches on the carbon frame and a torn plastic chainstay sticker.

We found that the Di2 was not set up properly and was totally off specification. Shifting was also slow. After re-setting up the Di2, shifting is now fast and precise and there is no more possibility of chain drop.

Note: There are 5 videos in the comments below, not in the main post, to prevent Facebook from automatically converting them into a reel. Please ignore the background noise due to a faulty microphone.

Technical sharing:We do not stock disc brake pads, but we take time to advise our clients on pad selection and compatibi...
31/05/2026

Technical sharing:

We do not stock disc brake pads, but we take time to advise our clients on pad selection and compatibility based on their braking system.

Disc brake pads generally come in three main compounds: organic (resin), semi-metallic, and sintered (metallic). Each compound has different braking characteristics in terms of bite, modulation, heat resistance, noise, and wear rate, and can affect overall braking performance depending on usage conditions.

We like what our client said. We never claim that we are the cheapest, and certainly we are not. However, our pricing is...
21/05/2026

We like what our client said. We never claim that we are the cheapest, and certainly we are not. However, our pricing is reasonable as we benchmark against other reputable bike shops, and considering the amount of effort we put into every bike, we believe clients will find it worth it.

This client also verbally mentioned to us in person concerns about dishonest and confusing online advertising by a certain bike shop that delivers less than expected, and appreciated our transparency in both our work and pricing.

The following is a 5 star review from this client:

"I highly recommend YM to anyone who needs to service, diagnose or repair your bicycle. The whole process is managed very professionally and transparently. The pricing is also very reasonable considering the work and effort put in. Do not hesitate and just send your bike to YM, who will certainly do a great job. Do check out his FB page and you will know what I mean!"

We do not try to trick potential clients into coming to us or ask them to repair unnecessary things. If there is no need...
20/05/2026

We do not try to trick potential clients into coming to us or ask them to repair unnecessary things. If there is no need for them to come down, we will say so and take the time to give proper advice whenever possible to save them the trip.

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+6597831447

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