Leoseek power meter spider - USB-C charging

[raisinberry777]

Another new cheap power meter, available in 3-bolt, 8-bolt and Easton variants. Supports USB-C charging.

PM only is here:
https://a.aliexpress.com/_mszqeJx

Paired with the ZRace Unchained Pro crankset here for a cheap combo:

https://a.aliexpress.com/_m06Brkt

Key issues so far is that there's no independent testing published on it, and the app is a mini-app through WeChat.

[muringuets]

Looks like China opened the pandora box of spider power meters... Geoid, Leossek, ArcRayo, (I'm sure there were at least other two new releases I can't remember the names)

I guess building this ain't rocket science anymore, I believe more will come from China.

The question remains: how do they compare in terms of quality, precision, and relialibity? Only time will tell...

[kbernstein]

600 grams exactly for 50-34 complete crankset? I'm seriously considering it even though I don't have a build planned for the near future...

Nexga is the only other currently available USB C PM I'm aware of https://cyclegears.net/products/nexga-s1-powermeter but at least 4 were on display at the shanghai bike show iirc. I think I'll be patient but definitely watching an eye on this.

[riggsy]

tempted with the Leoseek powermeter, £120 with discounts currently

[miguel0w]

I want to buy one of these 4-bolt, 110bcd power meters, but I want to use it on my mountain bike with a 36-tooth chainring. Do you think that's possible? (I couldn't find a 104bcd version at such a low price.)

[oxidizer]

Anyone got this one? It's 146 EUR in the basket. The Geoid PM500 with including the cranks (proprietary interface) is 180€....

[Ultramic]

I was tempted by this but decided to go with xcadey.

The problem with this leoseek one is that I can't find any reviews or user feedback and not sure of its accuracy and the fact that you don't have an app to calibrate (only on head unit). What's the point of buying a power meter, regardless of how cheap it is if it's inaccurate or not calibrated.

[oxidizer]

you don't have an app to calibrate (only on head unit). What's the point of buying a power meter, regardless of how cheap it is if it's inaccurate or not calibrated.

- IMO not a problem, you always use some sort of headunit anyways no?
- Accuracy is not that important in a powermeter (comparsion vs measurement from other powermeters is not that useful). Consistency is much more important (comparsion against the same powermeter previously is very useful).

[Ultramic]

- IMO not a problem, you always use some sort of headunit anyways no?
- Accuracy is not that important in a powermeter (comparsion vs measurement from other powermeters is not that useful). Consistency is much more important (comparsion against the same powermeter previously is very useful).

Some power meters require adjustment in addition to calibration which cannot be done via the computer.

Although relative power is important, I also want the absolute numbers to be thereabouts.

For me, this power meter is largely untested and the price difference to the xcadey was about US$40 which was justified for me

[oxidizer]

Chinese channel review:

There’s really no need to chase absolute accuracy in a power meter. Personally, I don’t think it’s that important. As long as your power meter and the Magene Lingen stay consistent with each other and can support your training zones, that’s what matters most.

The key point is whether the power curve provided by the power meter is stable—whether there’s any drifting or obviously unreliable data. So I uploaded the power data from both devices to ICU for everyone to take a look.

I’m actually quite satisfied with the results. Since the Magene test was pretty short—only about five minutes—the variations between the two devices were basically the same. The places where the lines don’t match usually happen when you suddenly put in a couple of hard pedal strokes. Spider-type power meters tend to show a spike in those moments. This is a common behavior of spider-based power meters, including the Xcadey as well. Their power curves tend to react more sharply.

You can see the normalized power: one is 200 W and the other is 191 W, so the difference is a bit larger there. But if you look at average power, the gap is much smaller. The spider meter shows 186 W, while the Magene Lingen shows 181 W. That difference is relatively small—you can think of it as traditional drivetrain loss.

Or you can simply fine-tune the spider meter’s calibration value—lower it by maybe 1%—so the two devices give you more similar numbers, and that’s good enough for training purposes.

So far, I haven’t found any issues. I’ll continue to record tests later to check its stability and battery life. If you’re interested in this power meter, feel free to keep following my videos.

[raisinberry777]

Maybe I'm a bit harsher, but that looks pretty bad to me. Certainly not consistent with the Magene pedals in the efforts.

[xzx_components]

screenshots attached for anyone that's wondering what the Wechat mini-program app looks like. There is no english but Wechat has an automatic translation function

[riggsy]

https://www.velotrend.net/leo-seek-power-meter-bcd

[Bonka]

Dear friends, I'm planning to buy it on sale, but no one has bought it yet? I read the reviews on Taobao, and they seem good...

[raisinberry777]

I have taken the plunge, found a cheap Bigrock RS crankset on eBay so bought a 3-bolt Leoseek power meter to go with it. The power meter was $150. Have seen it as cheap as $127, but didn't have the crankset at the time.