Quote from: jonathanf2 on May 17, 2024, 07:21:57 PM
I had a problem getting the ER9 LTwoo calipers+140mm adapter plate to line-up properly using 140mm rotors on the rear. I tried it on 2 different framesets and both of them would not line-up properly. The strange part is that I had no issues running 160mm rotors with the Ltwoo calipers+adapter plate. I ended up switching over to ZRace XG calipers which required no adapter plate. I literally just unscrewed the Ltwoo calipers and screwed in the Zrace calipers, plug-n-play style. They work well enough with no issues on long descents.

I have to say that I strongly discourage the use of this disc rotor. It completely neglects mechanical simulation and the bracket itself is prone to fracture. Furthermore, the pattern design is a mess, with hollow patterns distributed unevenly on several concentric circles. As a result, the friction rate of the entire disc rotor in the radial direction cannot achieve consistency, leading to the formation of grooves on your brake pads... It's a design that leaves me speechless.

The issues mentioned above are not exaggerated claims but rather highly probable events that have occurred multiple times on Chinese forums. I don't want anyone else to become a victim of this disc rotor.

Quote from: trcycling on May 17, 2024, 02:54:27 AM
...... a) I asked and was told they were post mount and b) the calipers are using an 70mm spacing that looks like post mount but uses M5 bolts like flat mount. ......

......

So, now I'm wondering what calipers might be compatible with the LTWOO levers. ......

What I want to say is that Ltwoo does not adhere to any known standards, whether it's flat mount or post mount. Ltwoo has designed its own specification and provides a bracket with the kit to install it on most flat mount frames. Therefore, you will find that the included screws are M5 size, not M6. Additionally, this Ltwoo-specific specification was not initially designed to accommodate post mount frames, meaning it cannot be installed on any post mount frame.

As for the second question, it is actually easily solvable. Any Shimano hydraulic disc brake caliper compatible with mineral oil systems can be used with Ltwoo's control lever, including but not limited to models like MT200, M6100, R7170, GRX400, and so on.

You just need to ensure that the syringe, olive head, and hose are compatible. I recommend using BH90 components across the board because BH90 hoses can be directly installed on all BH59 compatible components. As long as you ensure proper hose installation, you don't have to worry about any compatibility issues.

I have paired my GR9 control lever with the UR300 flat mount caliper using BH90 hose, syringe, and olive head, and the braking performance and feel are excellent. I have been using it smoothly for nearly 5,000km without any issues of brake fluid leakage or loss of braking power. So, feel free to boldly pair them together.

The attachment contains the reply I received from Ltwoo's official support regarding the waterproof performance of the EGR. The main point stated in the response is that the waterproofing of the EGR has been improved compared to earlier versions (at least according to their official statement).

Quote from: trcycling on May 16, 2024, 11:57:04 AM
... Do we have any idea where the ingress is? ...

Unfortunately, I don't have the physical EGR item with me, and my friends are also unaware of the specific areas where potential gaps may exist. All repairs are handled by Ltwoo officially.

However, I have a suggestion that may not be fully matured. Perhaps applying some waterproof spray meant for outdoor clothing on the outer layer of the rear derailleur could be helpful?

Quote from: trcycling on May 15, 2024, 04:06:12 PM
My eGR kit just showed up and I'm getting ready to configure. I ran into a question:

Is there a way to configure the shifters so that one can use BOTH sides at the same time?

I found that the app lets me change whether to use the right OR the left shifters to control the RD but see no setting to use both. On a side note, I find it hilarious that the app insists that the other one will be controlling the front derailleur which doesn't exist today on the eGR AND can't be powered with the eGR battery pack (the second power port is blank)

Ltwoo's idea is to use the left-hand button to control the electronic dropper seatpost. This dropper seatpost is expected to be released in the second half of this year, along with the mountain electronic derailleur. As for the accompanying shifting logic issues, it is indeed a frustrating design choice, but it seems that there are no other options at the moment.

Quote from: sOKRATEs100 on May 15, 2024, 06:43:43 AM
Hi @FabioZang,

many thanks for your feedback! Question is, when did they have updated the version in order to be more waterproof - if they did at all?

If they did, how to ensure to get delivered the updated version and not the previous one. I have reached out to Ltwoo via Emai, but didn't get a response. Via Aliexpress I didn't find a "chat/message button" to get in contact with the "official Ltwoo store" in order to ask them those questions.

You might have more luck when writing to them via email in your language? Could you give it a try?

Are there similar forum chats in China about this topic?

Many thanks, Dennis

I will try to ask them. Usually, I can contact them directly through platforms like Taobao or WeChat, without the need for emails. However, based on the feedback I received from secondary distributors in the past, the new versions of the EGR did not improve the waterproofing performance. In special cases, it is necessary to disassemble the rear derailleur and manually apply some waterproof sealant. But such an operation may result in the loss of warranty eligibility.

Based on the experiences of my friends, they had to wait until the rear derailleur got water inside and caused issues before contacting Ltwoo for repairs or part replacements (mainly due to water ingress in the rear derailleur). This process can be frustrating, and this issue may not necessarily occur in every kit. I am inclined to believe it could be a quality control problem. Moreover, purchasing Ltwoo from outside China would incur higher post-purchase costs, both in terms of money and time.

However, there have been some software improvements for the EGR, such as enhanced logic for situations like stationary shifting and accidental button presses. As for hardware improvements, there is currently no information available.

China does have similar forums, but we are not exactly like BBS forums. We are more like Reddit, with channels categorized based on discussion topics, and the discussions tend to be more basic. For more specialized discussions, we usually rely on WeChat group chats, which are more closed-off but allow for deeper conversations.

Quote from: 00Garza on May 13, 2024, 10:22:43 AM
Good updates on eGR. Any water tests or washes as of yet for you guys running eGR?

I am from China, and it's possible that I have access to information faster than others.

What I want to say is that although I haven't personally used the EGR kits, based on feedback from friends around me who have used it, the early versions of the EGR did not perform well in terms of waterproofing. All three of my friends experienced failures in the waterproofing performance of their EGR kits.

They obtained these early version kits either at the end of last year or the beginning of this year. I'm not sure if the recent updates to the EGR have completely resolved these issues.

Quote from: 100poods on February 08, 2024, 01:36:22 AM
Yes, I visited the site recently and it disappeared. But the 2024 version of G1005 with downtube storage appeared. I have friends in China, it might be possible to buy the G055 through them if there is only a regional restriction.

It doesn't seem to be a regional restriction issue because I am a Chinese friend myself (laughs). Based on the information I have gathered, they are unlikely to sell the 055D anymore. As for this 1005, it is a modified version based on an old chassis model, as you can see its geometry is identical to their previous works.

There is currently no detailed information available about this frame, except for an official promotional video.
Based on the content of the video, I can provide a brief description of the frame's features:
- It features a downtube storage design with a magnetic and buckle cover plate.
- It has a T47 bottom bracket, and support for UDH.
- The frame is designed to accommodate tires of 50c+ width both in the front and rear, with the fork and rear dropout widths measuring at least 60mm+.
- It has a flat mount disc brake mount compatible with 140/160mm rotors.
- The frame weight for size M (52) is 1200g (including the storage compartment cover plate and all accessories), while the fork weight is 460g (uncut).

Images and geometry tables are provided below.

In my personal opinion, the overall design of this bike is quite good, but the geometry seems to be a major drawback. It appears that the designer simply extended the overall reach without making further adjustments to match the rider's riding position. Additionally, I believe that using 140/160mm flat mount disc brakes with such a large tire clearance design may be somewhat outdated.

Apart from these points, I think it is a decent frame. What do you all think?

Quote from: 100poods on December 13, 2023, 03:05:23 AM
I contacted Yishun about this frame. They said that there hasn't been a large OEM order for this frame yet, so production and development is moving slowly. Currently, the earliest date available for ordering is May-June. Maybe earlier only if they get OEM order.

I will order this frame when it is available. Good geometry and I found quite good reviews for the same Cannondale KingPin system.

According to the latest information I have received, it seems that this frame has been acquired by an anonymous brand, who now holds the rights to its molds. Therefore, there is a high possibility that this frame may not be directly released into the consumer market as a retail product by Yishun.

This frame is sold for over 1000 Chinese yuan in China, and of course, it includes free shipping within China.
The quality of the frame should be fine, as many people in China are riding this model of frame.
The frame is manufactured by Kangpeng Bicycle, which is the OEM factory for the Poseidon bike's gravel frame (Redwood).
However, I honestly don't think it's worth spending so much money to buy this frame.

This guy has the exact same geometry as the Carbonda CFR707, with the difference of lacking the largest size and having additional storage box and rear suspension system. The size of the disc brake system has been reduced to 140mm. However, the claimed weight is considerably lighter than the 707.

It is unclear what the relationship is between Yishun and Carbonda. They are likely two unrelated factories, and it is unknown why their geometric designs are completely identical.

Quote from: Dinmamma123 on November 05, 2023, 07:01:33 PM
I also have similar question. Does anyone use a shimano road groupset? Thinking of using a 105 DI2 groupset and not sure what the max tire width would be?

I know someone who has a CFR707 with a full set of r7170 groupset paired with 35c tires, and he haven't encountered any compatibility issues.

Bad news: When I tightened the rear axle on my CFR707 frame, it caused the paint on the contact surface to crack.
I believe this is one of the few drawbacks of the CFR707 frame (at least, it's the issue I've noticed now). Although I didn't use a torque wrench when tightening it, I still think it's a design that needs improvement.

It's puzzling why Carbonda didn't incorporate any design between the rear axle and frame to prevent direct contact with the paint. They could have implemented a countersink (similar to the front fork) or added some sort of paint isolation.

I have uploaded photos of the front and rear axle lock areas. By comparing them, you will understand what I mean.

Quote from: buckfifty on November 07, 2023, 12:14:35 PM
has anyone tried putting 650b's on their 707?

I saw on Instagram that the brand PALU has a bike with the same frame as the CFR707. They have many photos of bikes with 650b wheelsets, which you can use as a reference.

Quote from: Dmtr on October 20, 2023, 02:54:09 PM
The challenge I'm facing is deciding between two versions of cranks - DUB Road and DUB Road Wide. I've heard that DUB Wide was specifically designed to accommodate wider tires and address issues like the chain hitting the tire or the spindle contacting the chainstay. So, my question is whether I should opt for the DUB Road or DUB Road Wide version. I've seen some photos of DUB builds here, so perhaps someone can share their opinion on this matter.

Thanks in advance.

I think you should choose the Wide version.