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Messages - jhearrtot

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1
Component Deals & Selection / Re: chinese carbon saddles
« on: August 21, 2026, 08:32:16 AM »
I bought the Kore saddle because the West biking failed after, let´s say, 1500km, so very few km in good road conditions and my 74kg ass. It broke not on the rails, but on the seat plastic structure (there is a pic of that with the ironic QCpassed sticker).
I chose the Kore because I have the wheels and everybody likes them, so I gave it a shot.
Here are a few pics comparing both models.
Hope it lasts more than the West Biking.
They are in the same US60 price range, depending on offers.

no link? Straight to jail!  ;D

Thanks for the comparison! I'll look into that kore saddle and i hope it fits my bum

2
Did you get the screw one or adhesive? I'm looking at getting the adhesive because I'm renting but wondering if it will hold up

I got 2 sets both the adhesive type and the 2nd stick where you have hooks for the shoes didn't hold well enough. I had to replace it with the command strips instead and haven't had any issues so far

3
that's a TanTan X68 - basically a Tarmac SL8 clone. seraphbikes dot com.

Thanks! Saw the original thread. My eyes are prolly tired i read it x86 instead and that threw me off  ;D

4
This is an x68 in size 44... she was nearly 140 cm tall when she started riding and training on it... I think that’s the minimum height for this frame size... She loves it 😉

hello, could you please confirm what frame brand is this and a link to it if possible?

I am 157cm and currently riding a CAAD10 in size 44 and this frame looks similar in size and geo.

thank you!

5
Component Deals & Selection / Re: Chinese cycling clothes
« on: July 10, 2026, 01:33:57 PM »
recently got this bib shorts in brown. the seller is Pimmer and seems to be selling some specxel items as well

https://www.aliexpress.com/item/1005008703652763.html?

i requested this to not have any branding, as i just want a clean looking brown bib and got exactly what i wanted.

This is a nice quality but affordable bib shorts. I am 157cm tall and 75kg and the size large did fit me well - not too tight, nor loose.

The stitches are well done, brown color is exactly as pictured, shoulder straps are nice and elastic, and the back is well ventilated to keep you cool when riding.

Leg grippers provide a nice grip in keeping the bib from riding up your legs

The chamois is surprisingly good enough for me as well, providing ample support and comfort when paired with my berk saddle riding around 1-2hrs and possibly longer. Also promotes mobility when pedaling fast while on the saddle.

Not sure if the chamois pad is a 'legit' EI pad but it was surprisingly comfortable, didn't move around and stayed in a balanced position and didn't get in the way or cause any friction/chafing on sensitive areas.

One negative tho, and quite minor is my order somewhat came stained with yellow spots - one on the strap and another at the back.

The stains were not easily noticeable unless you really scrutinize it. I've reported it to the seller immediately and sent them photos, and they gave me a partial refund right away - no questions asked!


As i was satisfied with this purchase, i bought a spexcel cargo bibs from them as well - it was cheaper overall from them for the same item/s being sold by spexcel, albeit limited colors to choose from
https://www.aliexpress.com/item/1005009268367875.html?

6
That oval chainring inaccuracy is not at all universal, as the article says, it really only applies to power meters which measure cadence once per revolution and assume the angular velocity of your pedalstroke is constant, those power meters should be considered garbage and avoided. Even if you don't use oval chainrings, the angular velocity of your pedal stroke is never constant. It spikes and dips on every revolution.

This is a long-solved problem, a proper power meter measures angular velocity continuously with a gyroscope and/or accelorometer and uses an up to date force and power measurement on every sample. Usually the sample rate is in the hundreds, maybe even thousands per second. Such fine granularity effectively eliminates any potential inaccuracy that would arise from unexpected pedalling dynamics.

Magene and pretty much every spider power meter on the market should have no problem with this. 2-3% of drivetrain loss is about what would normally be expected. Though there is the question of if the trainer is attempting to take that into account in any way or not and if yes, how much.

Thanks for your valuable insights! This is enough to assure me that I don't have to worry about using a round or oval chainrings with my P515.

7
The Magene is measuring before the drivetrain and the Saris is measuring after it. A small offset would be expected anyway, but what makes you think your trainer is more accurate?

Hey, I'm a bit of a noob when it comes to this stuff, but your question is valid and it made me think about it as well.

To clarify, I wasn't trying to say that my smart trainer is more accurate in terms of absolute power numbers. Looking back, I can see how that may have been implied in my post, so sorry for not being clearer.

I did some research and came across this article from Power Meter City regarding power meters and oval chainrings:

https://powermetercity.com/2016/07/24/power-meters-oval-chainrings/

Here's the concern: most power meters make the assumption that your pedaling velocity is constant. In other words, power meters assume that you turn the pedals at a steady speed throughout each pedal stroke revolution. The problem is that oval chainrings cause your crank velocity to change during each pedal stroke, as they limit the time spent in the dead spot and lengthen the time spent in the power phase.

Indeed, most studies conclude that because of the change in crank velocity, oval rings do influence the accuracy of power meters. More specifically, they can cause power numbers to be inflated. The more non-round the chainring is, the greater the impact on accuracy. Studies suggest you can expect an increase in power readings of anywhere from 1% to 4%.


Assuming that statement is correct, my front chainring is oval, which could explain the change in crank velocity during each pedal stroke. Since the power meter is mounted at the crank, I can see how it might report slightly higher readings compared to my smart trainer.

Again, I'm no expert, but that explanation seems reasonable to me. That said, I'm not too concerned about a small difference between the two devices unless the discrepancy becomes significant.

8
I got this to try. Lets just say it quickly went into the garbage bin. The size you see on photo was NOTHING like what I got. Nothing.

aww sorry to hear about your experience.

i got my 2 sets from 2 different sellers and they were all as advertised so I guess I'm lucky

9
Component Deals & Selection / Re: Chinese cycling clothes
« on: June 17, 2026, 01:30:39 PM »
I bought this recently and it arrived yesterday:

https://www.aliexpress.com/item/1005012373623508.html

I'm a big fan of Cheji bibs with their red pad (I currently have five pairs in rotation), but this one was a no-go for me, so I returned it for a full refund.

The good:

  • Great quality for the price.
  • The straps are comfortable, and the leg grippers are well done.
  • The red pad works really well for me. I can comfortably ride for 3–4 hours, and probably longer, while still feeling well supported.

The bad:

  • The "seamless" style of bibs just doesn't seem to work for me. I had another AliExpress-branded seamless bib before and didn't like that one either. When worn, it feels like I'm stuffed into a hot dog casing.
  • Another issue I have with seamless construction is that the fabric doesn't seem as breathable as traditional bibs.
  • They also seem to have messed up the sizing on this model. I've always ordered a Large from Cheji and the fit has been perfect. On this particular model, the leg length was noticeably longer than usual—it practically reached my kneecaps, LOL.

Overall, the quality is there, but the fit and seamless construction made it a dealbreaker for me.

10
I just got my P515 recently, which I picked up for only about CAD $260 during the June sale (without chainrings).

I'm using a 1x oval chainring and had to adjust the slope from 100% to 97% after comparing the 3-second power readings with my Saris H3+ smart trainer.

Is anyone else using the P515 with a single-chainring setup? How have you found the power accuracy, especially when compared to using a traditional round chainring?

11
I've tried many cycling sunglasses with Rx inserts before, and eventually got fed up because I had to replace the prescription lenses almost every year. That’s when I decided it was time to get LASIK—and it turned out to be one of the best decisions I’ve ever made.

Now I can wear any type of cycling glasses and actually enjoy riding, whether I have them on or not.

If it's an option for you, LASIK is the way to go, in my opinion.

13
i was thinking about getting this with the sales+coupons+paypal discount amounting to only CAD $136 was hard to pass on but I saw the Magene PES 515 on sale for about a hundred bucks more so I went for that instead!

14
bought a crank with adjustable length via flip chip inserts (160, 162.5, 165).

Set it up for 165 length and tested outside. left leg felt different so i stopped to check. didn't notice i used the 162mm chip (they all look similar) which i can't 'flip' (because the hole sits smack in the middle) instead of the 165 because i was too excited to ride and test it out ;D

15
Component Deals & Selection / Re: Chinese cycling clothes
« on: April 20, 2026, 10:59:32 AM »
Skinsuit --> aero --> aero position --> pelvis rotated forward --> pressure on the balls --> that's the wrong chamois.
As someone who mostly rides on the flat, at 80-85kg, at 35+kmh, i've tried plenty of pads, and my favourite two are https://www.aliexpress.com/item/1005004962411304.html & https://www.aliexpress.com/item/1005008761784076.html. Both are full foam (no gel), with the same thickness at the front & back, which means you're better cushioned in aero position. I'm instantly veto-ing anything that's not extra padded in the front, having tried a LOT of pads.
And so, this skinsuit has the wrong pad design, unfortunately.
Your mileage will vary, obviously, if you're lighter, if you climb a lot, blablabla, but if you spend a lot of time going on flat straight roads and care about aero, you probably want something more padded in the front.

I absolutely love the Cheji red pads that I now have 4 of them  ;D

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