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Messages - jonathanf2

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991
Component Deals & Selection / Re: Interesting Aliexpress finds! - good deals, interesting stuff, new products etc!
« on: December 06, 2022, 11:02:57 AM »
Quote from: jungian on December 06, 2022, 09:44:33 AM
Ah good catch about the axle and seller! Hoping other brands like the Elilee XXE or Skypivot show up on aliexpress someday.

Alloy axle cranksets is one area I've been hesitant to make the switch with to AliExpress parts. My criteria has to include a significant weight and price difference, while maintaining some level of durability versus my tried-n-true Shimano parts. For example, I'm a big fan of the ultra lightweight steel/alloy cassette, but the price/weight/durability is worth it for me. Plus the alloy cogs aren't always in-use. With these alloy axle cranksets, that alloy axle has constant force being applied to it, so it's one area I wouldn't want to chance regarding durability.

992
Component Deals & Selection / Re: Interesting Aliexpress finds! - good deals, interesting stuff, new products etc!
« on: December 06, 2022, 09:30:45 AM »
Quote from: jungian on December 03, 2022, 04:10:30 PM
Anyone try these ONRII carbon cranks?

https://www.aliexpress.us/item/3256804780405081.html?spm=a2g0o.productlist.0.0.3a3646e0ZAuZKF&algo_pvid=e1dc7e2f-9f74-4142-81db-ae8dae1defdd&algo_exp_id=e1dc7e2f-9f74-4142-81db-ae8dae1defdd-0&pdp_ext_f=%7B%22sku_id%22%3A%2212000031183966785%22%7D&pdp_npi=2%40dis%21USD%21320.15%21224.1%21220.9%21%21%21%21%402101e9cf16701051964745448e7b8b%2112000031183966785%21sea&curPageLogUid=u4a0ltXJaauW


600g for a 170 50-34 is quite nice.

If you're going to try it, you might as well buy direct from Onirii:
https://www.aliexpress.us/item/3256804780327674.html?

It looks like the axle is alloy. I notice alloy axle cranks don't sell well on AliExpress, probably for good reason.

993
Road Bike Frames, Wheels & Components / Re: Anybody see a big drop in comfort going from a round tube frame to an aero one?
« on: December 04, 2022, 12:20:30 PM »
Quote from: Takiyaki on December 04, 2022, 08:50:57 AM
I have a Dengfu FM208 (round tubes + round seatpost) and I want to switch to an R05 (aero tubes + seatpost). I will have the same wheels/tires on both (28mm GP5Ks). I know back in the day aero bikes were way stiffer but is that the case today? My roads aren't terrible but there are definitely some choppy sections and occasional potholes. If they are still super stiff I'd love some suggestions on round seatpost frames with dropped seatstays.

I have 2 round seat post bikes and 1 aero seat post bike all 3 being carbon. I don't notice any difference in comfort with factors such as body weight, tire width, saddle design, etc. probably make a difference in how the bike will feel. Though the good thing with round seat posts is that the clamping force is uniform with little to no worries of the seat post slipping.

994
Component Deals & Selection / Re: ZRace Disc Brakes
« on: December 04, 2022, 10:31:58 AM »
Quote from: coffeebreak on December 03, 2022, 11:10:32 PM
I'm intrigued by the adapter used for rear caliper mount. What frame is it? Is that plate custom made?

It's a post to flat adapter. I picked it up awhile ago, because initially I was planning to make this particular post mount frame into my GRX groupset build, but ended up using a different frame instead. I used an FM fork to convert the entire bike. I'm currently running it as a 1x road bike with an 11-32t cassette and 28c tubeless slicks, but I have an 11-50t and some Gravelking tires if I decide to go full gravel.

This is the person who makes them:
https://www.assolutions.ca/product-category/adapters/

ZRace recently started making one similar, but based on the post mount frame (ex: 160mm), requires you to upsize your rotor:
https://www.aliexpress.us/item/3256804752872846.html



995
Component Deals & Selection / Re: ZRace Disc Brakes
« on: December 03, 2022, 10:26:31 PM »
Today I rode the Onirii BR-05 calipers out on some flats, hill climbing and fast descents. I'm thoroughly impressed now. I did both steep downhills and rough paved fire roads. The calipers braked extremely well and they handled near if not equal to my Juin Tech F1s. I'll see how they hold up in the next few weeks. I also picked up some spare brake pads once the stock ones wear out.


996
Component Deals & Selection / Re: ZRace Disc Brakes
« on: December 03, 2022, 09:38:55 AM »
Quote from: coffeebreak on December 03, 2022, 01:13:05 AM
I checked mine. They are same. Basically there is no distinction between front and rear, so when he says front caliper came with larger pads I'm baffled.

Then he switched pads to semi metallic ones which resulted in better performance, but we already know that.
Apart from that what else is there? Watched the whole thing and there is nothing related to setup as such.

There was nothing in his video that really showed how to set them up, but I noticed I had them installed wrong. The correct way was to have the pad adjuster screwed out with the pin sticking out, route the brake cable and tighten with the bolt, then screw in the pad adjuster back in to pull the cable tighter. Also any micro adjustments can be done using the barrel adjuster on the calipers. Plus with my Sensah shifters, I was able to dial in the brake pull even more from the hoods with a hex wrench (similar with Shimano shifters). Now when I pull the brake levers, they lock up almost immediately without much effort.

Also a few comparison notes between the F1s and BR-05 calipers, I find the cable routing much better with the BR-05 lining up with rotor. On my F1s, the fork cable bends outward, while the rear actually rubs up against the seat stays (put protection tape on) since the cable alignment is on the outer side. Though I found the Juin Techs a bit more intuitive to setup and I prefer the tool free approach to the barrel adjuster on the F1s. The BR-05 can do 140mm rotors, while the F1s can only do 160mm smallest.

I tend to prefer the Juin Tech F1s, but you can practically buy 2 or maybe 3 BR-05 calipers for the same price.

997
Component Deals & Selection / Re: ZRace Disc Brakes
« on: December 03, 2022, 12:06:43 AM »
Quote from: coffeebreak on December 02, 2022, 09:05:07 PM
Dang! Link please? Or rather timestamp if you remember. He talks a LOT!

Here's the time stamp talking about the ZRace/Onirii calipers:
https://youtu.be/odBUtlLUzC8?t=477

One thing he mentioned is that his calipers came with two different brake pads. I'm pretty sure mine are running the same pad size.

998
Component Deals & Selection / Re: ZRace Disc Brakes
« on: December 02, 2022, 07:56:11 PM »
Quote from: coffeebreak on December 02, 2022, 07:38:15 PM
That’s the thing, $49 all in (for black color) is pretty good anyway you cut it. The Juin Techs are $150. Not sure of they are three times better than BR-05s?

I just realized I had my BR-05 calipers setup wrong after watching Trace Velo's latest video! He's also running the same calipers. I redid mine in 5 minutes and the brake pull is ridiculously tight. They're almost on par with my Juin Tech F1 calipers on my 105 bike, but it might even come down to the shifters being different. Now I'm thoroughly impressed. For the price, I might even say they're the better value brake calipers, but I'll have to go on several rides before giving a long term endorsement. The Juin Tech's have worked well on 45+ mph descents, so I'll have to put the BR-05 through the same type of braking.

Ugh, now I'm wondering if I should give the LTwoo GR9 shifters a try again, but I already put the bar tape on the drop bars with the Sensah shifters! Lol

999
Component Deals & Selection / Re: ZRace Disc Brakes
« on: December 02, 2022, 06:30:21 PM »
I was finally able to test ride my latest build with Onirii/ZRace BR-05 calipers running stock pads and regular brake cable housing. I also have a full GRX hydraulic bike and a Juin Tech F1 equipped bike to compare with. I'd rate the BR-05 calipers in 3rd place regarding brake performance compared to my other brakes, but in the context of sub-$50 USD brake they're quite good. The stock pads don't have as much bite as the Juin Tech pads, but they still work well. Also it probably helps to have shift/brake levers that allow brake pull adjustments.

Unfortunately I could not get these brakes to work well with LTwoo GR9 levers, which doesn't allow brake pull adjustments while using internal cable routed drop bars. I'm bummed because the LTwoo shifting has a very solid shift engagement. I almost thought the BR-05 calipers themselves were faulty until I swapped them out for Sensah Team Pro levers that allow brake pull adjustments and I was able to dial them in. Basically I tightened up cable slack at both ends of the caliper and shift levers.

I'd definitely recommend these brakes if you're on a budget or you're building a winter/backup bike. If you're building a primary bike, I'd consider paying extra for Juin Tech calipers or going full hydraulic if budget allows it.


1000
Component Deals & Selection / Re: ZRace Disc Brakes
« on: December 01, 2022, 09:45:26 AM »
I swapped out my LTwoo GR9 shifters for my other pair of Sensah Team Pro shifters and the brake pull feels much better on the Sensah setup with the Onirii/ZRace BR-005 brake calipers. It feels almost as good as my 105/Juin Tech F1 combo on my other bike and Sensah shifters allow brake pull adjustments from the hoods via a hex screw which allowed me to dial the brake feel directly. Even using the barrel adjustment on the BR-005 calipers and pad space adjuster, I just couldn't get the LTwoo brakes dialed in correctly. It's unfortunate as well, because the index shifting on the LTwoo calipers are a bit more precise than Sensah's shifting implementation.

1001
Component Deals & Selection / Re: Interesting Aliexpress finds! - good deals, interesting stuff, new products etc!
« on: December 01, 2022, 09:35:57 AM »
Quote from: impmonkey on November 30, 2022, 02:23:49 PM
I have road a BXT fat bike frame the last two winters with success. That said I purchased a this frame with the BF deal, Gloss white. Will end up being a spare/trainer bike with my Carbonda 969 being the primary. I also ordered an integrated handlebar/stem for it. Look forward to yet another build.

Glad someone took advantage of the deal. I really wanted to buy that frame, but I have too many bikes as-is! Definitely keep us updated when you receive the frame and build it.

1002
Component Deals & Selection / Re: ZRace Disc Brakes
« on: November 30, 2022, 09:42:01 AM »
Quote from: Tijoe on November 29, 2022, 06:55:19 PM
I am in the same boat.  I ordered 9 items on Nov 3rd.  6 or the 9 items have arrived.  I am waiting on a pair of carbon rims. (Still no tracking information on Aliexpress, but store swears they shipped right away.  A rear 148 MS hub, and Fat tire carbon front fork are also lagging way behind the rest of the items.)

The set of IIIPRO E4 Mountain Bike Brakes I ordered arrived in less than 10 days.

We should compile a list of sellers who ship items fast. I've received items from Ali that come faster than items I purchase domestically from Ebay.



1003
Component Deals & Selection / Re: ZRace Disc Brakes
« on: November 29, 2022, 05:10:22 PM »
Quote from: TidyDinosaur on November 29, 2022, 11:47:10 AM
What do you mean with brake modulation?

Cycling definition:

Brake modulation is the ability to precisely and accurately control the amount of clamp force on a rotor (or rim, which in some ways is just a big rotor, anyway) with a given amount of lever input.

I guess it also applies to brake pull as well. I barely have to squeeze my Juin Tech calipers for them to lock the brakes. My GRX hydraulic calipers have even more bite on the rotors.

1004
Component Deals & Selection / Re: ZRace Disc Brakes
« on: November 29, 2022, 11:40:28 AM »
Quote from: ChrisB on November 29, 2022, 05:22:56 AM
Don't give up yet...
1) I use 105 / Juintech F1 on my Ti Gravel bike with great results, no need to go full hydraulic
2) On my second Gravel I use the Sensah SRX Pro Brifters in combination with BR-005 breaks and Cooma Ex Plus break pads. This combines with Jagwire compressionless housings gets it close to my other bike at a fraction of the cost.

BR Chris

I also have 105 (5800) shifters paired to F1 calipers on my road bike. Braking is so good, I don't even feel the need for compressionless housing. I also have a GRX gravel bike with full hydraulic braking and the Juin Techs with standard brake housing compare really well. I was hoping the Onirii/Zrace BR-005 calipers would be similar, but so far I've been underwhelmed. Like I said it could be the fact that the Ltwoo GR9 shifters I'm using just don't work well with internal drop bar cabling, despite using the same exact bars as my road bike w/F1 calipers. Plus there's no adjustment for brake modulation like my 105 shifters.

The thing is, the LTwoo GR9 shifters have spot-on shift indexing (I really like the campy style shifting) and weigh less compared to the Sensah Team Pro 2x shifters I've tried.  Also I'm not fond of the shared Sensah shift/brake lever setup. Though the Sensah shifters allow for brake adjustments via a hex screw which makes it easier to dial in braking. LTwoo shifters have no such adjustment.

So I'm considering:
- swapping out the shifters back to Sensah for better brake modulation (still own, was planning on using them on another bike build)
- swapping out the calipers for Juin Tech $$ or TRP Spyres $ (FYI - Spyres come with gasket covers)

I could go compressionless on the BR-005, but my road bike uses standard brake housing and they brake great as-is compared to my full hydraulic setup.

1005
Component Deals & Selection / Re: ZRace Disc Brakes
« on: November 28, 2022, 06:57:42 PM »
Quote from: TidyDinosaur on November 28, 2022, 11:48:22 AM
Welcome to the wonderful world of Chinese groupsets... I must say the sensah SRX Pro groupset and those hybrid brake callipers looked good in the beginning, but I too am now questioning my decision... I think it would have been better if I went for Sram or Shimano in the first place... Especially if you buy used, you can do good deals... You can get second hand 11 speed ultegra shifters and combine them with a GRX rear derailleur for example...

After a few weeks with my new BR-05 brakes and Jagwire compressionless housing I am beginning to feel deterioration in the rear brake, and I think I might know why... The open end of the brake cable housing is pointing upward where it is connected to the brake calliper. This means water and dirt can get inside and create extra resistance for the cable... I have ordered these rubber dust covers to put on there, but I don't know if it's not already too late  :(
https://www.aliexpress.com/item/4000154839195.html?spm=a2g0o.order_list.0.0.38381802HfMcOW

I'm currently using a GRX drivetrain on my 1x bike build (RD + crank), but my original thought was to try the Chinese shifters as opposed to using Shimano 11 speed shifters and save on money. If I can't get either the shifters or brakes to work properly, I'll probably stomach the cost and get 105/Ultegra shifters and TRP spyre brakes.

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