The granny gear is the smallest cog on the front crankset of your bike. If you haven’t already become best friends with it, you may need to start! Gear ratios on.

• The BH Emotion is a Panasonic Electric Bike that looks like a handsome, sleek road bike. And it handles like a stiff, responsive road bike. The BH Emotion race bike.
• Top 10 bike maintenance don'ts; 7 steps to fitting a Race Face Cinch bottom bracket and crankset; How to adjust the gears on your bike; How to fix punctures on a hub.
• The rear triangle and fork also feel nice and roomy. That’s partly because the wheelbase of the bike is longer than you’d find on a road racer or hybrid, which is.

Complete guide to bottom brackets. It wasn't long ago that the only major bottom bracket decisions you had to make were shell width, spindle length, and, in rare cases, English (BSA) or Italian threading. These days, it can feel as though there as many 'standards' as there are bike brands, with every one of them supposedly being the best option.

But fear not — read on for our complete guide to the various types of bottom bracket available. Here's a rundown of each of the major bottom bracket systems currently available, along with advantages, disadvantages, notes on compatibility, and some input from their respective proponents on why they exist: Conventional threaded. BB9. 0/BB9. 5PF8. BB3. 0BB3. 0APF3.

Felt has done it. Felt Bicycles now makes the ultimate performance bike for the indecisive. Part of a broad trend to make high-performance road bikes more versatile. Adobe After Effects Crack File Rar To Zip.

BBright. BB3. 86 EVOT4. We've also included a section on how you can (or can't as the case may be) change between different bottom bracket standards and an explainer on why there are so many standards in the first place.

Conventional threaded. Modern, external cup threaded bottom brackets aren't exactly a new invention.

In fact, their roots date back more than two decades to Craig Edwards' old Sweet Wings cranks and Alex Pong's groundbreaking Magic Motorcycle. The idea is simple: by moving the bearings outboard of the shell, you can then use a much larger spindle.

Currently, 2. 4mm is the accepted norm compared to square- taper's relatively miniscule 1. External bottom brackets for 3. White Industries.

Shimano popularized the concept as Hollowtech II, with the introduction of the XTR M9. In fact, companies such as Santa Cruz continue to stand by it despite the plethora of other options.

Conventional threaded bottom brackets are still very popular, and for good reason. Canyon, for example, stuck with a threaded shell on its top- end Ultimate CF SLX road frame until 2. Most of our bikes come with ISCG tabs, but for the few that don't, a thread- in bottom bracket still allows for chain guide mounting. The bearing bores are usually round already, with aluminum cups because it is a machined surface, and if the bearing bores are too tight you can sand them out and get the fit just right for the bearings before you thread them into the frame.

You cannot use a facing or cutting tool that I know of in a carbon shell. Excluding the relatively new T4. Italian threaded bottom bracket.

To keep matters simple, we've put together a simple explainer on this slightly esoteric of standards here. BB9. 0/BB9. 5Trek introduced BB9. Madone and soon followed with the mountain bike- specific BB9. Instead of having cartridge bearings that were pressed into aluminium cups that were then threaded into the frame, Trek eliminated the middle man and pressed the bare bearings directly into the frame. Bearing seats were moulded into the carbon frame structure to save weight, and bottom bracket shell width ballooned to 9. Trek's BB9. 0 system uses the same bearings and bearing locations as a conventional threaded system, but eliminates the cups entirely.

Bearings are pressed directly into precision- molded carbon seats. It also provides a simplified installation process. Crankset compatibility is thus unchanged, although you do lose the ability to run chain guides that sandwich between the driveside cup and frame. This system is not without its issues, with shells becoming oversized a relatively common problem (leading Trek to release the very slightly oversized V2 bearings to compensate). Pros: Lighter than conventional setups but retains wide range of compatibility; creates a wider BB shell without affecting crank width. Cons: Can't use cup- mounted chain guides; shell is wider but still small in diameter; requires a separate bearing puller and press for service. Crank designs that will fit: Standard 2.

A GXP conversion kit is also available. PF8. 6/9. 2Very closely related to Trek's BB9.

PF8. 6/9. 2 standard used by Scott, Giant, Pivot, and many others. Once again, the bearings and their locations are identical to those of conventional threaded bottom brackets, only they're mounted in small composite cups before being pressed into the frame. The advantages are similar to those for Trek's BB9. From a manufacturing standpoint, PF8. BB9. 0/9. 5's, and it's easier to adapt the system into alloy frames.

So long as you have a concentric bore of the right diameter, parallel faces, and a proper shell width, you're good to go. PF8. 6's wider shell allows the chainstays to be pushed further apart – a big advantage for 'cross bikes . We can do this without creating our own crank spindle standard because it adheres to the same spindle that a threaded BB uses. It's also lighter than a threaded BB because we've removed the alloy material that held the bearings outside the shell . Disadvantages? None that I can see. BB3. 0's bearing cartridges press directly into a precision- fit shell, as with Trek's BB9. C- Clips. But here it's the shell and spindle diameters that increase in size, not the shell width.

The key benefits are lighter weights owing to the larger, 3. Plus, because the shell is still just 6. Q factor). Proper BB3. By comparison, Dura- Ace 9.

In addition to weight, another BB3. By increasing the spindle diameter, you increase its resistance to twisting, which is where the bulk of the deflection in a crankset comes from. Moreover, with the notable exception of Felt, which uses a carbon tube, BB3. Pros: Lighter weight; more resistant to axle twist; more heel clearance; larger- diameter shell and spindle; potential for narrower pedal stance width. Cons: Shell still just 6. Crank designs that will fit: BB3.

BB3. 86 EVO, standard 2. Specialized OSBB, BBright. BB3. 0A and BB3. 0- 8. Ai. More recently, Cannondale has announced a variant of BB3. BB3. 0A. This uses a shell that's 5mm wider than the original but it's an asymmetrical layout that only adds those extra millimetres on the non- driveside.

According to Cannondale, this allows for wider bearing spacing and better spindle support (which should improve bearing longevity). Other critical dimensions, such as bearing outer diameter and thickness, remain unchanged and there's also no difference in pedal stance width or ankle clearance (in most cases). That extra 5mm can complicate crank compatibility, however. BB3. 0- compatible cranks that feature axle spacers on the non- driveside (such as from Cannondale and SRAM) will work just fine because all you'll have to do is remove spacers as needed to accommodate the extra width, but BB3.

FSA and Specialized) won't work. Thankfully, many newer BB3. Cannondale also recently introduced another bottom bracket standard in the form of BB3. Ai. First used on the brand's new Super. X 'cross bike, the new standard works in exactly the same way as BB3. A, but sees the shell ballooned out to 8. Pros: Lighter weight; more resistant to axle twist; more heel clearance; larger- diameter shell and spindle; potential for narrower pedal stance width.

Cons: Metal- on- metal interfaces can be prone to creaking; requires a separate bearing puller and press for service; requires high manufacturing tolerances; bearing seats can't easily be faced post- manufacturing; not all BB3. Crank designs that will fit: BB3. BB3. 86 EVO, standard 2. BBright. PF3. 0 and OSBBSRAM addressed BB3.

Press. Fit 3. 0 in 2. Just as with PF8. PF3. 0 is analogous to BB3.

Not surprisingly, then, PF3. Specialized's OSBB system is nearly identical to BB/PF3.

Chris D'Aluisio. BB3. Cranks of both systems are compatible with each other. They both have the same needs for concentricity and placement relative to the frame. The threads are at a disadvantage in that they need to be machined from both sides and have a hard time sharing a centerline, whereas our OSBB is machined from one side all at once — and round holes are easy to measure. BBright shares its 3.

PF3. 0 — in fact, the bottom bracket cups are identical to PF3. However, the non- driveside bearing is pushed outward by 1. BB9. 0, and PF8. 6 bottom brackets. This makes it something of a hybrid between the two widely accepted systems.

Power. 2Max NG Power Meter In- Depth Review. Last August at Eurobike, Power. Max announced their latest power meter – the Power. Max NG. But these days things are all caught up and thus it’s definitely time for some in- depth review action. I’ve been riding a Power. Max NG unit on my bike for about a month and a half. Following that I then put the new spider onto the existing crankset: Then from there, it’s bolting back on the chainrings.

Finally, I slide the axle through the bottom bracket and attach the left crank arm. And with that, our installation is complete. In any case, I haven’t lost mine yet, but I much prefer the charging cover that ROTOR has implemented on their new 2. INPower design. While most modern power meters will stabilize themselves with regards to temperature compensation and such, by tracking the zero offset you ensure that if something is amiss you catch it before it impacts your training/racing.

Both of these are pretty common though on most power meters these days. In my testing, I generally use between 2- 4 other power meters on the bike at once. This was done on Zwift, and the set can be viewed here. So at a high level you can certainly see things look pretty darn good between the three units from an agreement standpoint. Some very slight couple- watt variations between the two as they climb and peak out, and then virtually matching (actually, the very next second they match precisely). At this point, it should be pretty obvious that things look very good across the board against other units that have been well proven as accurate. Of course, Power.

Max has been producing very accurate power meters for years. But anytime you shift the underlying technology as they did with the NG (in pursuit of higher accuracy), you have to worry that companies make missteps.