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Alibayexpress parts you love

slyfink

Turbo Monkey
Sep 16, 2008
9,834
5,667
Ottawa, Canada
Anyone bought a presta inflator for a compressor off Ali? Anyone recommend one? The Park INF-2 is $250 AUD which is ridiculous. The Prestaflator Mini would be ideal but they're still $70 AUD for some reason.

Don't need a built in gauge, just a Presta head for a compressor
did you ever find one? Mine's getting kinda old and slipping a bit. Could be time to replace it...
 

Bikael Molton

goofy for life
Jun 9, 2003
4,088
1,235
El Lay
I recently picked up this one. I am using it with a shitty pancake compressor that someone gave me, so inflation power and speed isn't very good. It's certainly not blasting hard-to-seat tires onto my rims.

As far as the unit itself, I hate the plastic flip-lever inflator head, but that is par for the course: most plastic flip-lever heads that I have on floor pumps are mediocre as well. This head neads to be held squarely onto the valve stem with my other hand or else air leaks around the valve, but again that is common for most plastic lever heads I've used.

I plan to modify this to take a Lezyne-style screw-on presta head. (Yes, I'm aware of the valve unscrewing issue with those too.)
The rest of the prestaflator unit seems fine, though it seems like a $25 item, not $50.


did you ever find one? Mine's getting kinda old and slipping a bit. Could be time to replace it...
 

toodles

ridiculously corgi proportioned
Aug 24, 2004
5,892
5,263
Australia
did you ever find one? Mine's getting kinda old and slipping a bit. Could be time to replace it...
No I haven't yet, although following the link @Bikael Molton posted I found this one which looks like it might tick the boxes.


1715287878073.png


*note* geez I'd rather buy local than Amazon but bloody price goes up 50% trying to get one here. Cheaper to ship from US.
 

Andeh

Customer Title
Mar 3, 2020
1,217
1,183
Any of you ebay / Ali experts find a Chinese knockoff of the $90 SRAM Ultimate Piston Spreader yet? Looks like a nice tool, but no way I'm paying $90 for that.
 

Leafy

Monkey
Sep 13, 2019
647
412
Any of you ebay / Ali experts find a Chinese knockoff of the $90 SRAM Ultimate Piston Spreader yet? Looks like a nice tool, but no way I'm paying $90 for that.
I use a small c clamp from harbor freight that I ground the head down to fit in the calipers. Do 1 piston at a time.
 

Andeh

Customer Title
Mar 3, 2020
1,217
1,183
I've got tire levers and the Park piston pusher for doing 1 or 2 pistons at a time from 1 side. What I like about the idea of the SRAM one is that it pushes both sides back evenly. I figure that it's probably better for the seals & such.
 

mykel

closer to Periwinkle
Apr 19, 2013
5,543
4,257
sw ontario canada
I have an original prestaflator with the push on chuck.
I got a few rubber sealing doughnuts at the same time, but the last one is about half done. I should start to look for its replacement. I don't like the removal by pulling sharply and hoping you don't sever a finger on a brake rotor though.
 

canadmos

Cake Tease
May 29, 2011
22,224
21,837
Canaderp
I need a new derailleur, so I started to look and then got sidetracked looking at Aliexpress stuff.

Then started reading about real Shimano parts being sold from Asia, on there.

Then saw someone posted these pics, of brand new Shimano stuff being sent to the recycling. The boxes got wet or something?









Just a random post.
 

Leafy

Monkey
Sep 13, 2019
647
412
I had to locally rebuy the XT rear mech I bought from aliexpress, not because it was counterfeit but because they shipped it in just a bag and it got bent in some way I couldn’t figure out how to bend back and it never shifted right. New one shifted fine.
 

slimshady

¡Mira, una ardilla!
I had to locally rebuy the XT rear mech I bought from aliexpress, not because it was counterfeit but because they shipped it in just a bag and it got bent in some way I couldn’t figure out how to bend back and it never shifted right. New one shifted fine.
You probably got one of those salvaged from the recycling containers @canadmos just posted (?)
 

Sandwich

Pig my fish!
Staff member
May 23, 2002
22,014
7,252
borcester rhymes
woody on here bought an XT derailleur setup through ali or ebay or something and didn't want to run it because he thought it was fake. It looked like the best damned replica I had ever seen- I couldn't tell it from a real one with both in hand. I know that there are some very high end knockoffs out there, but I have some doubts that most of the branded stuff sold on there is "off-the-truck" real.
 

slimshady

¡Mira, una ardilla!
woody on here bought an XT derailleur setup through ali or ebay or something and didn't want to run it because he thought it was fake. It looked like the best damned replica I had ever seen- I couldn't tell it from a real one with both in hand. I know that there are some very high end knockoffs out there, but I have some doubts that most of the branded stuff sold on there is "off-the-truck" real.
Nah, those are legit, but if you look at the back the model/serial number/lot number has been sanded off. We used to buy a lot of Shimano parts and SRAM brakes from ebay sellers about 5-7 years ago.

They were most likely bought by generic commuting bike brands and then resold outside the APAC area via ebay.
 
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Leafy

Monkey
Sep 13, 2019
647
412
Nah, those are legit, but if you look at the back the model/serial number/lot number has been sanded off. We used to buy a lot of Shimano parts and SRAM brakes from ebay sellers about 5-7 years ago.

They were most likely bought by generic commuting bike brands and then resold outside the APAC area via ebay.
yeah mine even has the same weird green grease in it that the local one did.
 

Gary

my pronouns are hag/gis
Aug 27, 2002
8,600
6,505
UK
Any of you ebay / Ali experts find a Chinese knockoff of the $90 SRAM Ultimate Piston Spreader yet? Looks like a nice tool, but no way I'm paying $90 for that.
No friends in the trade? it's definitely worth £40.
It is a great (workshop) tool. I don't really care how "nice" it or any other tools "look" so long as they're functional and durable. And this tool is extremely functional and a joy to use. In the workshop it paid for itself within a few days and continues reducing the time we used to spend fucking about trying to get pistons retracted smoothly and evenly. Sorted out an ancient set of Elixrs morning that honestly wouldn't really have been worth the labour without it.
It's kinda specific to SRAM calipers (and not even ideal for old Avids) so I'm looking forward to the inevitable universal knock off versions

Ps. Genuine 3M 2228 Mastic tape is a lot cheaper from Alixpress too
 

canadmos

Cake Tease
May 29, 2011
22,224
21,837
Canaderp
yeah mine even has the same weird green grease in it that the local one did.
That green/clear/neon grease that comes on Shimano stuff is magical. I don't know how many times I have hosed off my bike, but I bet if I took the crank off, that stuff would still be packed in there.

Is it the same as the stuff that's called "Shimano Premium Grease? If it is, its expensive.
 

Bike078

Monkey
Jan 11, 2018
599
440
Nah, those are legit, but if you look at the back the model/serial number/lot number has been sanded off. We used to buy a lot of Shimano parts and SRAM brakes from ebay sellers about 5-7 years ago.

They were most likely bought by generic commuting bike brands and then resold outside the APAC area via ebay.
I think I remember Rockshox forks with their serial numbers sanded off being sold on Facebook in my country a few years ago.
 

canadmos

Cake Tease
May 29, 2011
22,224
21,837
Canaderp
Got a carbon seat with supposedly 3d printed cushioning, very light and stiff.

Didn't splinter into bits on tonight's ride....


Slippery slope into sandwich territory here.
 

Sandwich

Pig my fish!
Staff member
May 23, 2002
22,014
7,252
borcester rhymes
PS, that chain stay protector has been awesome. 10/10

The ztto dropper lever is a solid 8-9/10- a little fiddly to assemble but works really well and highly adjustable.

The wing grips are even growing on me- they will eventually be replaced but a great buy for the price.
 

Sandwich

Pig my fish!
Staff member
May 23, 2002
22,014
7,252
borcester rhymes
I know that many of you wouldn't be caught dead on a road bike, but I am absolutely blown away by the quality of my Ali cycling jerseys, and to a lesser degree my bibs. I bought the bibs because they were cheap AF and I intended to use them on the trainer or under MTB shorts, but they are nice enough on their own. The bibs don't have the greatest chamois, even the high end "italian" ones, but the jerseys hold their own against anything under $100 out there.
 

slyfink

Turbo Monkey
Sep 16, 2008
9,834
5,667
Ottawa, Canada
on a tire review over on NSMB, I saw these screw-on adapters to make regular valves high-flow valves:

they seem pretty swell. but none of my local Trek dealers seem to carry them. couldn't find any knock-offs on Aliexpress. Anyone else have better luck?
 

slimshady

¡Mira, una ardilla!
on a tire review over on NSMB, I saw these screw-on adapters to make regular valves high-flow valves:

they seem pretty swell. but none of my local Trek dealers seem to carry them. couldn't find any knock-offs on Aliexpress. Anyone else have better luck?
This whole BS of reinventing Schrader valves but in a moar complicated and less efficient way is driving me nuts. Presta valves are designed for higher pressures than Schrader. They are also moar fragile, and with less air flow. I don't know whyeveryone is still investing tons of money into making them less shitty.
 

slyfink

Turbo Monkey
Sep 16, 2008
9,834
5,667
Ottawa, Canada
This whole BS of reinventing Schrader valves but in a moar complicated and less efficient way is driving me nuts. Presta valves are designed for higher pressures than Schrader. They are also moar fragile, and with less air flow. I don't know whyeveryone is still investing tons of money into making them less shitty.
well, I run an insert. Even with a new core, the valve struggles to let air in. Pumping with a floor pump has noticeably more resistance. I'm just looking for something to help with that. Would rather not replace the whole valve, as that requires removing a tire bead, and fucking with the insert.
 
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slimshady

¡Mira, una ardilla!
I know that many of you wouldn't be caught dead on a road bike, but I am absolutely blown away by the quality of my Ali cycling jerseys, and to a lesser degree my bibs. I bought the bibs because they were cheap AF and I intended to use them on the trainer or under MTB shorts, but they are nice enough on their own. The bibs don't have the greatest chamois, even the high end "italian" ones, but the jerseys hold their own against anything under $100 out there.
One of my riding buddies is usually dressed head to toe in copycat Fox kit, including the Ranger rain jacket, and he's been swearing by it for almost two years now. Fox Ranger shorts are 70+ USD here, Ranger rain jackets 140+ USD, while the Ali ones are ~20 USD for the shorts and ~30 for the jacket.
 

Gary

my pronouns are hag/gis
Aug 27, 2002
8,600
6,505
UK
Presta valves are designed for higher pressures than Schrader.
Nah.
Presta was simply simply designed to fit a smaller diameter hole than woods/dunlop valves and therefore could be used in narrower rims.
The pressure thing, as far as tyres goes is a myth.
Yes. people run 130psi+ in bicycle tyres with presta, but only because they tend to be narrow low volume tyres so need higher pressures for the same support. or lower rolling resistance on smooth velodromes.
Shocks and shock pumps all use schrader and hold upto 600psi. Schrader is also used for almost all vehicle tyres including aircraft. Some holding pressures of 200-300psi
Not enough to make my point? No idea what sort of gas ram this schrader valve core is used for but it's rated to 4000psi
 
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jrewing

Monkey
Aug 22, 2010
442
306
Maydena Oz
Nah.
Presta was simply simply designed to fit a smaller diameter hole than woods/dunlop valves and therefore could be used in narrower rims.
The pressure thing, as far as tyres goes is a myth.
Yes. people run 130psi+ in bicycle tyres with presta, but only because they tend to be narrow low volume tyres so need higher pressures for the same support. or lower rolling resistance on smooth velodromes.
Shocks and shock pumps all use schrader and hold upto 600psi. Schrader is also used for almost all vehicle tyres including aircraft. Some holding pressures of 200-300psi
Not enough to make my point? No idea what sort of gas ram this schrader valve core is used for but it's rated to 4000psi
Had a mate lose the world suspersport championship because the team didnt put a valve cap on a schrader. Was the le mans round and he was running first but slowly went backwards, with what they thought was a slow puncture, and DNF’d. That DNF cost him the championship ultimately. They determined later it was the centrifugal force on the straights bleeding air from the valve. Crazy
 

toodles

ridiculously corgi proportioned
Aug 24, 2004
5,892
5,263
Australia
Nah.
Presta was simply simply designed to fit a smaller diameter hole than woods/dunlop valves and therefore could be used in narrower rims.
The pressure thing, as far as tyres goes is a myth.
Yes. people run 130psi+ in bicycle tyres with presta, but only because they tend to be narrow low volume tyres so need higher pressures for the same support. or lower rolling resistance on smooth velodromes.
Shocks and shock pumps all use schrader and hold upto 600psi. Schrader is also used for almost all vehicle tyres including aircraft. Some holding pressures of 200-300psi
Not enough to make my point? No idea what sort of gas ram this schrader valve core is used for but it's rated to 4000psi
Yeah we use Schrader valves on refrigeration stuff that hold 3000kPa (~430psi). Let alone whatever pressure the schrader on rear shocks holds at bottom out. I don't think Presta was invented due to a pressure limitation.
 

Gary

my pronouns are hag/gis
Aug 27, 2002
8,600
6,505
UK
Had a mate lose the world suspersport championship because the team didnt put a valve cap on a schrader. Was the le mans round and he was running first but slowly went backwards, with what they thought was a slow puncture, and DNF’d. That DNF cost him the championship ultimately. They determined later it was the centrifugal force on the straights bleeding air from the valve. Crazy
That is crazy