10
votes
What is "crank preload"
I added a definition of preload to the terminology index under the bearings page, as this is a term that is frequently referred to but not clearly defined. Consider your crankset. Preload is how tight ...
- 24.1k
10
votes
Accepted
What does this barrel adjuster do on the rear derailleur (SRAM Apex 1)?
It lengthens or shortens the housing length to adjust the lateral position of the derailleur cage. It's used to adjust derailleur 'indexing' so that the chain sits properly on the cassette sprockets.
...
10
votes
Accepted
What's the difference between Shimano HG and SRAM XD free hubs?
The phrase missing here is 'Freehub body'. The freehub replaced the freewheel, mostly, which integrated the sprockets and the ratcheting mechanism. The freehub body is therefore the ratcheting ...
- 4,130
9
votes
Mechanic told me to replace the entire brake system because of "slow return"?
I would be initially skeptical, and I would definitely get a second opinion at a different bike shop. The brakes could indeed be worn in a way that they are beyond repair, but before you plunk down a ...
- 5,002
8
votes
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Can you change the rear hub on a tubular cyclo cross wheelset with out riping the tubular tyre off?
It is almost impossible to rebuild a wheel (i.e., new hub and new spokes) without removing the tire. Leaving the tire on, would mean leaving the spoke nipples in place. (It is a good idea to replace ...
- 30.1k
8
votes
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Stock 10 Speed Shifters with 9 Speed Transmission
Not entirely surprised you have problems refer here...
According to this link, Cable Pull for a Campy 10 shifter is 2.8mm, dérailleur ratio for a Campy is 1.5 (or 1.4 for old) Cassette sprocket ...
- 44.7k
8
votes
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Which bikes come with SRAM Automatix
For those who aren't familiar, a SRAM Automatix hub is a 2-sped internal gear hub which shifts automatically, with the shift mechanism and everything contained in the hub. The mechanism is mechanical, ...
- 45.8k
8
votes
What's the difference between Shimano HG and SRAM XD free hubs?
SRAM's XD and XDR drivers (their term) don't have splines, unlike Shimano and Campagnolo freehub bodies. Instead, their cassettes screw onto the threaded section of the driver as shown in the image ...
- 24.1k
8
votes
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Can I use SRAM DUB Red Crankset in a Trek Madone SLR 7 that requires GXP?
Modern cranksets either have 24mm-ish width spindles, or 30mm-ish spindles. DUB (28.99mm spindle) falls into the latter category. GXP spindles (24mm, tapered to 22mm on one side) fall into the former. ...
- 24.1k
7
votes
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Alternative to tuning automatic hub?
Unwinding the spring, as the article states, will make the hub to shift when you're going faster.
Without touching the internals, the hub will shift at the same speed, no matter how high the cadence ...
- 2,663
7
votes
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Switching from MTB to road handlebars
You absolutely need SRAM shift/brake lever units. SRAM road shift/brake levers are compatible with their MTB derailleurs and come in a 1x11 version.
Trying to mix Shimano and SRAM will just be a ...
7
votes
Accepted
Carbon fiber crank arm with scratches--how much damage is a concern?
The thing with CF components is that you can't really tell much about structural integrity without specialized tools and knowledge unless it's obvious from the first glance.
Anyway, SRAM carbon fiber ...
- 5,660
7
votes
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Explanation on the lineup of Shimano Derailleurs
refer here:
https://productinfo.shimano.com/download/pdf/spec/3.1/en
Mostly this is MARKETING.
Shimano tend to use the same designs for a lot of their products, but typically these are introduced ...
- 4,130
7
votes
Can I combine SRAM Rival 22 Levers and Shimano 105 Rim Brakes?
For BR-5700, BR-5800, and BR-R7000 they run off the various new school Shimano not-quite-short-pull cable travel numbers. SRAM road levers are all basically traditional short pull, which is less cable ...
- 75.5k
7
votes
Accepted
Is there empirical evidence that SRAM DUB bottom brackets have longevity issues in the BB86/92 format?
You're looking for empirical data and you probably will never get any unless you do the testing yourself.
The problem is that the alignment and tolerances of the frame bores and to a lesser extent the ...
- 75.5k
7
votes
Accepted
Slowly switching from Shimano to SRAM
First question: having to mess with cables every month or two is not normal. I would recommend investigating that first. If you still have the stock wheels, you can just replace the freehub body, no ...
- 12.3k
7
votes
Mechanic told me to replace the entire brake system because of "slow return"?
SRAM hydraulic braking systems are directly descended from the older Avid hydraulic braking systems.
I have experience with many sets of Juicy brakes where neglect, hard use and/or bad conditions have ...
- 12.3k
6
votes
Accepted
SRAM Cassette on Campy Wheels
Campagnolo wheels are available with both Shimano/SRAM and Campagnolo cassette compatible freewheel bodies. Ask which cassette your friend has and if they have Campagnolo, you can get the correct ...
- 21k
6
votes
Accepted
How to know when to bleed a hydraulic disk brake / tips for improving disk brake performance?
Bad disc brake performance is almost always either air in the lines or oil on the pads.
Air makes the levers spongey and oil stops the pads grabbing the disc.
Your problem sounds like air, a bleed ...
- 5,736
6
votes
SRAM Red 1098 Cassette "teeth"
In general, when you see oddly shaped teeth or variations on a cassette/chainring, its there to facilitate shifting (such as Shimano Hyperglide, and ramps/pins you see on chainrings/cassettes; see ...
- 45.8k
6
votes
Is 1x11 better than any 2X10?
Neither system is better than the other. In some situations, 1x is better, in others, 2x is better. As cassette range expands, effectively because the largest cog is getting bigger, the advantageous ...
- 44.7k
6
votes
Accepted
Eagle chain B-gap adjustment without plastic tool
This measurement is given by both Shimano and SRAM as the shortest distance between the circles formed by the tips of the teeth of the largest cog and those of the guide pulley.
The spec for Eagle is ...
- 75.5k
6
votes
Accepted
SRAM Eagle XX1 Cassette creaking under torque, only after warming up
So after replacing the free hub and didn't help, I looked closer and realized the creaking was happening at the little spline fingers that flare out on the outside of the cassette to hold it in place. ...
- 337
6
votes
Quarq dfour installation
Some cranksets are modular. I'm not sure if this is a standard term, but I do mean that the crankarms fit to the spider with a splined interface. Thus, you can replace the spider. Less commonly, on ...
- 24.1k
5
votes
Can I replace my Shimano outer chain ring with a SRAM?
You can use the chainring, but each brand (Shimano, SRAM, etc...) aligns the shifting ramps and pins to work best with their own brands inner rings. So the indexed shifting will not be as fast/smooth ...
- 571
5
votes
Accepted
BB92 (Shimano bottom bracket) with SRAM 30mm crankshaft (X01 or XX1 BB30)?
BB92 is also known as PF41. The shell width should be 91.5mm and the inner diameter should be 41mm.
30mm:
According to SRAM's 1x11 frame fit specifications, the inner part of the XX1 "spider" sits ...
- 3,886
5
votes
What is "crank preload"
Crank preload is there to ensure that cranks are not over tightened so that they cause premature failure of the bearings. It allows the cranks to be "finger tightened" prior to the pinch bolts been ...
- 8,797
5
votes
SRAM X01 Eagle (12speed) in 11speed transmission: it work?
To quote Art's Cyclery:
"Eagle drivetrains are not backwards compatible in any way (the exception being SRAM’s direct mount cranksets, which will still require a new Eagle chainring)"
and VitalMTB:
...
- 45.8k
5
votes
Accepted
5
votes
Accepted
Has SRAM discontinued i-light hub dynamo?
According to this page yes, the hub
is discontinued and is no longer available
@armb's assumption may be true. They stopped making IGH's and dynamo hubs for the same reason, at the same time. I-...
- 2,663
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