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Re: Groupset News
Quote from: StiffWeenies on September 06, 2023, 08:50:11 PM
Besides the new gravel RD, the shift buttons and brake calipers have also been updated

obviously the usual caveats go with anything new they release, but the pace of iterations is really incredible

just a couple months ago the gravel RD looked like this


bonus, footage of early eRX prototype

I was amazed to see a picture from Baidu Tieba on a forum located across the ocean, and it was even a picture I personally uploaded. The feeling is truly extraordinary.
Are you perhaps a member of Tieba as well?

我竟然能在一个远在大洋彼岸的论坛里看到来自百度贴吧的图片，甚至还是我自己亲自上传的，这样的感觉真的很奇妙
你不会还是贴吧吧友吧？
September 12, 2023, 09:16:05 AM 		4
Re: Groupset News
Quote from: kbernstein on September 12, 2023, 10:50:45 AM
Do you  work for LTwoo Fabio?
No, I only know the staff of L-twoo, so I have the opportunity to see news and pictures of engineering prototypes. Also L-twoo doesn't mind the leak of such pictures. Just like StiffWeenies who posted earlier, we are all ordinary bicycle enthusiasts. The only difference is that we are Chinese, so we can access this kind of news earlier.
No，我只是和蓝图的工作人员认识，因此可以有机会看到工程样机的消息和图片，蓝图也并不介意这类图片的流出。就像前面发帖的StiffWeenies一样，我们都是普通的自行车玩家。只不过因为我们是中国人所以可以更早接触到这类新闻。
September 12, 2023, 10:01:56 PM 		4
Re: Groupset News Perhaps it was on the forum ridinggravel or on Reddit. I use the ID "@烂薄荷_" within China, which means "rotten mint". Although I'm not as professional as the OP, and my comments might be more subjective, I am indeed willing to share these fresh news with everyone.
也许是Gravel论坛或者是reddit。我在国内用“烂薄荷_"这个ID，意思是”腐烂的薄荷“。不过我没有OP那么专业，说的话可能也会更加主观，但是我确实乐意向大家分享这些新鲜的消息。
Quote from: coffeebreak on September 12, 2023, 10:06:25 PM
I have read your name somewhere else before but can't recall where exactly. May be weighweenies? In any case, glad you are here and hopefully providing more insider tidbits like SW.
September 12, 2023, 10:22:52 PM 		4
Re: Groupset News I would like to share some information I have about the L-twoo eGR with everyone. The basic performance parameters, I believe, do not need further elaboration as they are clearly stated on the official L-twoo website(https://www.ltwoo.com/). However, the technical manual may not have been translated into English yet.

The comprehensive distribution of the eGR to the consumer market is likely to wait until early next year, and it may take even longer for overseas users. This could be due to the logic that L-twoo needs to have enough OEM orders (orders from complete bicycle manufacturers, such as XDS or TRINX) before being able to cater to retail consumers.

The eGR does not differentiate between aluminum alloy and carbon fiber versions. eGR is the only name, with an aluminum alloy handlebar and a carbon fiber rear derailleur cage.

The eGR's dual-control levers are not exactly the same as the eRX/eR9. L-twoo has modified the button shape of the eGR, making it larger and easier to touch. They have also improved the button feel, enhanced the button's travel, and improved tactile feedback.
(Here is a video showing the feel):
https://www.bilibili.com/video/BV1K94y1x7nu/?share_source=copy_web&vd_source=6df32e378224c6b777e3a0681a05b579

From the renderings and weight analysis, it appears that the left handlebar of the eGR still has buttons and can control the rear derailleur.

[One speculation: Perhaps both the left and right handlebars of the eGR can simultaneously control the same rear derailleur, and I hope there will be an app for customizing the buttons. This would make the eGR have a very interesting shifting logic, such as using the left hand exclusively for downshifting, with the slim buttons on the right for upshifting and the larger buttons for downshifting.]

In the future, L-twoo may continue to develop derivative products for the eGR, such as an electronic dropper seatpost. This could be the reason why the left hand of the eGR still retains its buttons.

L-twoo's ambitions go beyond this, and in the near future, they may release a completely wireless MTB electronic shifter, similar to what Wheel-Top and SRAM have done.

我想向大家分享一下我所掌握的有关L-twoo eGR的一些消息
基本的性能参数我觉得不需要再赘述了，全新的L-twoo官网上都有写明，可能只有技术手册还没有被翻译成英文
eGR对C端的全面铺货大概率要等到明年年初，而对于海外用户来说可能需要更久
这其中的逻辑可能是因为L-twoo需要先拥有足够的OE订单（来自整车厂的订单，例如xds、千里达之类的），才有能力去应对零售消费者
eGR不区分铝合金/碳纤维版本。eGR就是唯一的名称，其手柄为铝合金材质，后拨链器笼为碳纤维材质
eGR和eRX/eR9的双控手柄并非完全一样，L-twoo修改了eGR的按键形状，让它变得更大更容易触摸，同时还改进了按键手感，加强了按键的行程和触感反馈
从渲染图和重量分析，eGR的左手柄依然有按键，并且可以对后拨进行控制
【一种猜测：也许eGR的左右手柄都可以同时控制同一个后拨链器，并且我希望可以用app对按键进行自定义，这样就会让eGR有非常有趣的变速逻辑（例如左手全部是降档，而右手的细长按键用来升档，粗大按键用来降档）】
L-twoo在未来可能会继续开发eGR的衍生产品，例如电子升降座杆，这可能是eGR左手没有被取消按键的原因
L-twoo的野心不止于此，在不久的将来应该会发布纯无线的MTB电子变速器，就像Wheel-Top和SRAM做的那样
September 13, 2023, 01:12:41 AM 		4
Re: Carbonda Gravel Carbon frame CFR707 My CFR707 is completed, and here are some photos of the new bike.
https://photos.app.goo.gl/oeXM3WUUDXkVLBxz9

For the paint finish, I chose RAL5004 with added pearl sparkle. Its effect under sunlight is absolutely perfect, shining and dazzling. However, the paint finish details are not particularly perfect, with slightly sloppy transitions, and the overall paint quality is passable, probably at a 7.5/10 level.

The frame is a semi-internal routing version, and I opted for the UDH hanger, which allows for maximum upgrade potential in the future without sacrificing support for standard derailleurs. The frame craftsmanship is flawless, with smooth inner walls. The only issue is that the cable guide cannot be fully inserted into the frame, which is related to my assembly sequence, and I can't solely blame Carbonda for the problem.

For the drivetrain, I chose the L-twoo GR9 hydraulic groupset. So far, it has been working well with precise shifting. I paired it with Shimano UR300 calipers and 180mm rotors for strong braking power. I also used the mineral brake fluid from EZmtb. They claim that this mineral brake fluid, labeled as #6, offers a lighter feel and can handle higher working temperatures compared to Shimano's original brake fluid. I will continue using this combination until any significant issues arise.

The complete configuration is listed in the last image, with all prices in Chinese Yuan and excluding shipping costs.
https://photos.app.goo.gl/EyXH5r7nxEqRB6zd7
October 05, 2023, 12:51:07 AM 		3
Re: Carbonda Gravel Carbon frame CFR707
Quote from: jannmayer on October 05, 2023, 12:55:22 AM

It's beautiful! Good to know that the 2.0 Race Kings will fit. What is the internal width of your rims? I have Maxxis Ramblers in 700x50 mm on 24 mm rims (internal width) and there's a bit of clearance but I wouldn't go too much bigger.

My wheel rim has an internal width of 22mm. However, the tire tread rubs against the rear chainstay of the frame. To resolve this, I applied a layer of transparent TPU protective film to the frame. The front fork does not need to worry about the same problem
I also have 50c Rambler tires, but I haven't installed them on the CFR707 yet. When I previously mounted the Rambler tires on the same wheelset, their actual width measured 47mm, slightly narrower than the current Rac King's 49mm. Additionally, the tread was less pronounced and easier to manage. Therefore, I don't think you need to worry about the width issue.
October 05, 2023, 01:12:07 AM 		2
Re: Groupset News
Quote from: mirek100 on October 16, 2023, 01:08:46 AM
Does anybody know how much bigger are the Sensah HRD levers comparing to the mechanical Sensah lever? Does anybody have a picture both mechanical and hydraulic lever side by side?
I have some comparison photos here.
October 16, 2023, 02:13:17 AM 		4
Re: Groupset News
Quote from: 00Garza on October 16, 2023, 09:13:45 AM
Wow. Supposedly the shifter throw was already kind of long with the mechanical shifters. Can't imagine with those hydro monstrosities.
This is a photo I took at the Shanghai Bicycle Expo in May this year. You can refer to the shift lever throw in the picture.
October 16, 2023, 10:26:51 AM 		2
Re: Groupset News Here is some news about eGR:

Currently, eGR has started small-scale tests in the pre-production and final stages, and it is expected to be available for sale in early next year (after the 2024 Chinese New Year).

I have some pictures of eGR from friends who have received the kit.
https://photos.app.goo.gl/Cc4wmfB5XBxMcgTw7

The main focus is on comparing the weight with the GRT Mechanical Carbon Fiber Hydraulic Kit:
The eGR rear derailleur is 65g heavier than the GRT rear derailleur. The new version of the clamp has a more refined appearance and is 45g lighter per pair. The eGR shifter no longer has a gear mechanism, making it 52g lighter per pair. However, due to the additional weight of batteries and cables compared to the mechanical kit, it adds approximately 78g. Therefore, the eGR weighs about 50g more than the GRT carbon fiber overall, excluding the battery mount plug.

The eGR brake lever and rear derailleur housing are made of carbon fiber, while the rear derailleur guide plate is made of aluminum alloy.

Compared to eR9/eRX, the shape of the eGR brake lever is less outwardly extended, the button shape is larger, and the button travel has increased, resulting in a better feel. Apart from these changes, there are no significant differences.

Although the eGR left-hand side has buttons, it has been confirmed that it cannot control the same rear derailleur with two hands like SRAM. The buttons on the left side may be designed for electronic seat post adjustment (I'm not sure if this is accurate).

The eGR features a newly designed integrated clamp that is lighter in weight. However, due to Shimano's patents, there have been no improvements in the bleeding method.
October 16, 2023, 08:28:41 PM 		7
Re: Yishun G055-D 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.
December 11, 2023, 12:32:38 AM 		1