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Re: Continuation: IIIPRO E4 4-Piston Hydraulic MTB Brakes - Are they to be trusted?
Quote from: Serge_K on June 07, 2025, 01:19:52 PM
Can you please explain the thought process of buying the same product 6 times? I'm not making fun, I really do wonder how you justified giving the same product another chance, then another, then another, then another, then another?
We have been running ltwoo er9 on five bikes and all but one derailleurs died once, but no derailleur has died a second time, and it was across five bikes.

Also, it's a bummer, because the calipers look similar to the road version that came out recently as reviewed by trace vélo. And I'm tempted.

Actually, I have "4 sets" of the IIIPros, and one set of the 4-piston Bucklos brakes.  (Bucklos = parent company of IIIPro.)

I purchased the IIIPro brakes "2-sets" at a time during Aliexpress sales, about 6 months apart, before I started having problems with the calipers.   (Purchased 3 sets for bikes I built, and a spare set.)
Based on the initial reviews 1-1/2 to 2 years ago, they appeared to be a good modulated feeling lightweight  great brake for the price.   -  They have performed very well overall, but appear to have a short seal life.
 
When I think about the bike that the calipers are failing on,  it appears that on this bike,  I do a lot of  heavy duty long downhill braking, at high speeds, and this is where the calipers don't last.   This is my hardtail that doubles as a bike camping/bikepacker.  I am guessing that heat build-up in the calipers is doing something to the seals.

Since I started this thread, I wrote Bucklos explaining the situation, and to ask if they have a seal kit, versus me purchasing replacement seals based on digital caliper measurements and what I could find online for sale.   

I've had my fair share of premature leaky seal failures on my XT calipers over the years,  so having seal failures on the IIIPros isn't too big of a surprise.

What I would like to know is if IIIPro is using a crappy seal material, or if they have a design flaw in the calipers leading to short seal life.   (When I look at the design of the caliper bore that the seals and pistons fit into, they visually look the same as all the other calipers I have rebuilt over the years.   
of the leaky calipers. I see no signs of wear on the bores or pistons. 



June 08, 2025, 01:59:17 PM 		1
Re: Lightcarbon: LCR018-D (endurance all-road) Finally an update, painting is finished and ready for shipment.
I had to change from the 400/100mm handlebar to 380/90mm, due to the ordered one is out of stock and would take another 2 weeks to make.

Also added the 15mm SB seat post for 50USD to my order, just to be a bit more flexible with the position and adjustment.
Here some screenshots from a video which Wendy send me.
October 28, 2025, 04:16:50 AM 		1
Re: Quick Pro ER:One The Test Ride
I took it out for a proper test on a big group ride: 130km (80 miles) with 2,398m (7,800 ft) of climbing. The parcours was mountainous but also had a lot of flat sections. It was a memorial ride, but a good chunk of the local race community was there, so there were plenty of egos. This gave me a good chance to pull some turns and test the bike on the ascents and descents.

My Context & Comparison
For reference, I'm 171cm (5'7") tall and 63kg (139 lbs).

My previous bike was a Specialized Allez Sprint (Size 49), which I always felt was just a little too small for me. I'm getting back into riding and racing after a 10+ year break and recovering from some running injuries, so I'm not as fast as I used to be. My handling comparisons are all coming from that Allez Sprint lens.

How It Handled

Climbing:
The bike climbs really well. I took it up Deer Creek, which is a brutally steep climb @ 11.5% for 3.6kms (2.25 miles). Grinding out a gear while seated was a more (relatively) enjoyable experience. Compared to other aggressive bikes (like my Allez), things can get very twitchy on steep climbs at low speed. The QuickPro, however, was stable. I could pick the best line across the road without worrying about the front wheel flopping over and putting me out of the apex of the turn.

This stability was even more noticeable on a longer, faster climb like Latigo Canyon. (This is a ~14km / 9.1-mile climb in the Santa Monica Mountains, averaging ~5%). By this point, I was 90km into the ride, it was getting hot, and I was just holding my Zone 2 (around 200 watts). The bike's handling allowed me to just relax, stare at the road ahead, and take up the whole lane to find the best line. It's a much different experience from my old bike, where I felt I had to actively fight to keep it from flopping off my chosen line while also trying to focus on power.

Descending:
After Deer Creek, you're rewarded with the descent down Yerba Buena, which is fast with lots of fun chicanes and minimal braking.

I'm still getting used to the bike, but I was really able to push it into corners. As a test, I'd scrub a little speed from a rider in front of me before a turn, and I was consistently able to carry more speed through and out of the corner to get right back on their wheel. My confidence on this bike grew with every turn. I'm excited to take this bike down more descents in the future.

On the Flats
I haven't really put the bike through its paces yet in a hard, flat-out effort. But frankly, I'm not too concerned with how it performs on a flat parcours with a bunch of SoCal crit ogres, because that's pretty close to what the bike was designed to do.

Ride Feel
Compared to my Allez (aluminum), the ride feel is more or less what you would expect from a carbon super bike: it's more smooth and plush.

However, there is one characteristic that is noticeable from any other bike I've ridden, and it's the most striking feature of the bike: the Fork. When going downhill, I noticed the wind on my legs felt different. The inside of my legs didn't feel wind, as opposed to the outside of my legs, which was a strange sensation. Unsure if that makes you faster or slower, but it's noticeable at speed.

Final Conclusion
  • How does it climb? It climbs exceptionally well. It's very stable and not twitchy, even on steep climbs, which lets you focus on your line instead of fighting the bike.
  • How does it descend? I was able to push it into corners and carry more speed than I expected.
  • Is it the lightest? I have no idea. I don't weigh my bikes.
  • Would I race this bike? Yeah, it's not shit.
  • Is it worth the money? Compared to what's out there from Western brands, I think it's a no-brainer. Against other Eastern brands, perhaps there are better bikes per dollar (or euro or w/e), but it's a strong contender.
  • Would I recommend this bike to other people? Yes.
November 02, 2025, 12:58:50 PM 		1
Re: Alanera framesets I keep getting more info about this company, so I will keep updating this thread with info as more become available. It may end up being crap frame in the end, but at least there will be some info on it in case anyone else looks for it in the future. Figured a lot of other Chinese frame manufacturers were new at some point in time, so who knows. I like to give benefit of doubt, which in this case could be quite stupid and waste of time.

These guys have had a factory for at least 10 years, and were producing OEM custom orders for different companies. This year they decided to start producing their own, so makes sense why info is scarce. Attached is their brochure that they used before.

Doing some really quick searching on the bike models that are in brochure it looks like HQR37 frame has been used by Synergy brand: https://www.alibaba.com/product-detail/Synergy-HQR37-Aero-Carbon-Race-Bike_1600544790777.html

I should get a picture album of some sort from this person, so I will post up when I get that.
November 11, 2025, 02:10:58 PM 		1
Re: Lightcarbon: LCR018-D (endurance all-road) Finished the build tonight at long last.
What a beautiful bike - the raw carbon gloss finish really is amazing and I’m so glad I went for it.
Bike was so easy to build.

A quick 5 minute test confirmed the bike is solid as a rock and as comfortable as you would ever hope for - the geometry is superb. To be able to climb straight onto a bike and feel instantly comfortable and at home says it all.

Ultegra 8170 is absolutely ridiculous. Silent to the point where I wasn’t even sure I changed gear and so fast across the range.

Weighed in around 7.35kg with pedals which is right on target.

Hope to get an hour out on it tomorrow so hopefully will be able to report back after that, but initial impressions are really, really positive.






November 11, 2025, 05:50:15 PM 		1
Re: 11.11 What did you get? I've been using the Conti Grand Prix and have put about 2,000km on them. I'm using them with tubes and was initially worried about puncture protection since it uses 3 ply vs 4ply with tubeless but so far is been good.

Obviously heavier than gp5000's and I notice the difference but can't complain as it costs a fraction of the price. This is much better than the ultra and grand sport.

You can pick these up for US$12 delivered on the coins page.
November 16, 2025, 03:49:50 PM 		1
Re: Lightcarbon: LCR018-D (endurance all-road) Look what an early santa left on my porch in Size 54  8)
November 19, 2025, 10:35:07 AM 		1
Re: Lightcarbon: LCR018-D (endurance all-road) My frame arrived today. Size 56. Two colour, crystal red + crystal silver.
11 weeks from placing order.
November 24, 2025, 06:46:19 AM 		1
Re: Lightcarbon: LCR018-D (endurance all-road) Couple of quick updates.

Just received my Toseek handlebars - they look good and the finish should match in with the bike nicely.
The really great point is that they use the exact same spacers, so that makes life very easy for the install.

I also ordered a fancy looking Garmin mount from Aliexpress on sale for Black Friday which ties in with the colours of all the bolts on the bike, so that'll be a nice touch too.

One point to note - I got bottle cages from Lightcarbon when ordering the LCR018-D - these are a sloppy fit on my standard bottles and are causing a lot of rattling. I think I'll just replace them rather than start adding tape or something to address the sloppiness.
**Update to this - tried another bottle cage today and still rattling, so it must be coming from the cage against the little metal door. Will try some rubber washers under the cage.
November 27, 2025, 03:20:12 AM 		1
Re: Interesting Aliexpress finds! - good deals, interesting stuff, new products etc! Cruz carbon crankset with titanium axle and 3 bolt direct mount. Advertised 320g in 165mm, mine weighs in at under 310g.
November 27, 2025, 09:32:53 PM 		1