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Jack, it's exactly the grinding sound they describe in that forum.

I also found this interesting discussion: https://www.emtbforums.com/threads/tq-hpr50-grinding-noise.31137/

Searching a bit in various forums, especially in MTB forums that use the TQ50 motor, I come across the fact that this same issue is well-known to them, and they have even received a response from the manufacturer clarifying their stance. I am attaching a YouTube link where I found the following...

Thank you, Jack, for your timely comment. I suppose you're referring to the ring that secures the chain sprocket to the motor shaft?. I will check.

Grinding Noise What seemed perfect ceased to be so. My odometer has crossed the 1000 km mark, and in the last three rides, a terrifying noise started coming from the TQ50 motor of my 2023 Domane+ SLR. For a moment, I thought some mechanism inside the engine was being ground because it was an...

Hello Rob, I'm glad to hear that you started to enjoy the Domane+ SLR. Collecting data from our rides is crucial to understanding the Domane+/HQ50 system. This knowledge will enable us to use the battery efficiently, resulting in longer and more challenging trips. I like the approach you're...

As I mentioned earlier, my first experience with an ebike was with an Orbea Gain D50 with a rear hub motor, based on the Mahle X35 system with a 250WH battery and a 40NM motor. The total weight of the Orbea is around 13.1 Kg. Rear hub motor ebikes have some particular characteristics that make...

One of the concerns when planning a route on an EBike is knowing whether the battery's charging capacity will be sufficient for that journey. Naturally, the battery's capacity will depend on many factors that we are all already familiar with. Knowing that the 2023 Domane+ SLR has a battery with...

Hello Moss, Some time ago, I installed the X35+ motor on an aluminum DT Swiss wheel, and I've been using it without any issues since then. The rim I used is the R460 700C 23MM DB VI. In addition to the rim, you'll need to get spokes of the appropriate size. In my case, I used DT Swiss spokes...

Hello Plumm Bob, you are experiencing what many of us have suffered with this application. There's no doubt that the Mahle X35 system is an excellent system, I have no complaints, but the My Smart app is really poor. I got tired of it and opted to stop using it quite a while ago. I only use my...

Rob, you are correct. I have an Orbea Gain with a rear hub motor. The front end is standard Shimano or Sram (in my case Shimano 105).

Hi guys, I would like to know if anyone in this group is using the TQ range extender, and what has been your experience. I will appreciate your comments

Second comment/question comes from : "My comments had more to do with the % assist settings and what I perceived to be an illusory use of anything above 100%." I believe we are both agreeing that the % of assistance parameter has a lot of background. I have a lot of experience and many years...

As a result of several value-added conversations with RDV about the above graphics, 2 question arise: 1) Why do you always use the ECO mode, even though could could manage with your own watts? This is the result of tests, observations, and feelings during the adjustment rides. I came to realize...

Hello everyone, I'm nearing the end of my Domane+ SLR6 fit testing. After multiple tests of assistance levels (230Km routes test), I have arrived at personalized values that make me feel good on any route. These final values are very close to those theoretically produced by my proposed...

Hello Deacon Blues, I am riding a Domane+ SLR 6 with Shimano 105 Di2 and Praxis front gear. Bearing in mind the failure that you reported, last week I carried out some basic tests trying to find out under what conditions the chain could drop when changing the front gear. As you know, when we...

Hello Captain Slow, It is in my pending anwers list. I will do asap.

Hello Jeremy, Normally my average cadence for 140W is between 70 to 80 RPM, the motor likes those revs too. I don't use any special pinion, the normal thing during the tour. 34 forward to climb and moving between 11 to 34 back.

Hi Will, I haven't confirmed it yet, but I think around 30W. We will have it on the checklist.

The following information corresponds to a test ride of 44Km with a maximum slope of 16%. For this tour, only MODE 1 (ECO) was used: ECO= 136x50%=84W An image is attached with general information of the route The purpose of the test was to have a better feeling of the assistance for different...