8

If you are concerned about the empty hole next to the Phillips head screw, you can ease your concern. The cable guide typically only needs a single mounting screw. The extra hole allows the same cable guide to fit a variety of bikes by shifting the guide towards the drive or non drive side depending on which hole is used.


7

The thread repair tool that is used in this sort of situation is called a die. The common size for crank nuts is M8x1.25. However, too much material appears to be lost here for that approach to be reasonable. Crank nuts/bolts are one of the higher torque items on a bike, meaning you don't really have much leeway for severely damaged threads. Also, hardened ...


5

They are rack and fender mounts and you cannot install disc brakes with them. I.S. mounts are 51 mm apart, and post mounts are 74 mm apart (and look totally different). For more details on these mounts, see this answer.


4

You have it right. Between medium and long cage, medium is the one to get here. As you say, you only need a capacity of 23, which is short cage. SRAM is still listing a short cage X7 on their site, but I couldn't find anyone selling or distributing it. If you can track one down and if you're staying with this gearing, that would be more ideal than medium ...


4

As you have a 1x drivetrain with non-integrated brakes and shifters upgrading it to one with more gears is relatively simple. You need to replace the shifter, rear derailleur and cassette and chain at a minimum. You can also replace the crankset and bottom bracket. As you have an 8 speed cassette the freehub body will take up to an 10 speed cassette with no ...


3

It looks like to 20" version of the bike comes with a rear linear pull brake, but the 16" has a coaster brake. This is common practice with kids bikes as children young enough to be on a 16" bike don't have enough hand strength to operate a brake lever effectively. I looked into doing the same thing when my daughter had a 16" bike, but found that it is not ...


3

From the information available your bike uses a 1-1/8" quill style adjustable stem. The only other pertinent variable is handlebar diameter. While you most likely have 25.4mm (1 inch) bars you could have 31.8mm bars. Locating replacement bolts will likely be difficult as the pinch bolts of pivoting stems are typically brand specific in terms of length of ...


3

You have the seat stay mounts on the frame (those are the two thin tubes that go from the rear wheel drop outs to the top of the seat tube). What you need is mounts on the rear wheel drop outs. Typically, they are part of the dropout and/or frame. In your case, you have none. That being said, the P-Clips and Tubus Clamps will not be useful. The Tubus ...


2

I was going to say that you should send the left crank arm into 4iiii to install the strain gauges. They charge US $300. However, I checked, and they do not list the Alba as eligible for this service. The reason likely has to do with economics. All power meters use strain gauges to determine how much you are flexing the crank arm (it’s more complicated than ...


2

Check out this thread, the bike in question matches "F4042" S/N portion with yours. According to messages, your bike was built by Formosa in Taiwan (F) in 1984 (4), so it's not Formula One, which was made in Japan. This post mentions that "Viper, Pacer 500 & Super Streak were available that year", but an archived copy of os-db reveals there were also ...


2

I liked @argenti-apparatus answer, but I just wanted to add that many children's bikes don't come with child size brake levers. You may need to use the brake lever adjsutment screw to move the lever as close to the handle bar as possible as otherwise the child will not be able to physically use the brake.


2

This bike looks to have a vee brake seen on (now old school) mountain bikes. The popping noise you notice could be the cable housing not sitting in one of its barrels. And, pulling the lever that could cause it to move suddenly in/out of place. It could also explain why the wheel isn't turning well: the housing could pull on the cable, and hence the brake. ...


2

You're an exceptionally experienced programmer, you know by now that life is a series of compromises and trade offs. Yes the diamondback is a good bike for that price, but you get what you pay for. If you really want a bicycle you'll enjoy, go to a family owned local bike shop and trade a little extra money for an experienced employee to fit you to a bike ...


2

That link appears to be a dealer-only one, I get a login prompt. It's a flat bar road bike and based on a google search comes with 700c/ISO622 wheels and a 7 speed cassette (7 gears on the right hand shifter). The R23 in the name very probably means the original rim is 23mm wide. That means any 7 speed narrow rim 700c wheel should work.


2

It looks like it runs a 3x7 Shimano mountain drivetrain. You can get new shifters such as the Shimano ST-EF51's (the 3x7 version; which are switchable between V-brakes and cantilevers -- see manual for details) or the SL-M310 (in the 7 speed version for the rear, triple for the front; add your own brake levers if yours are integrated with the appropriate ...


2

My first real road bike was around $1300 - so you are on the right track as far as spending. You do have to pony up to get a decent ride and components. I bought a Bianchi, and the dealer is an hour away. I haven't had any issues, but now that I look back I should have bought a bike where I live, so I have dealer support and can get parts/merchandise ...


2

Presuming this is you, tt's a standard 130mm-spaced, rim brake road bike. You need any set of quick release skewers. Get a road type set so the back one doesn't stick out past the nut.


2

First, do you have quick releases, or do you have thru-axles? If you have rim brakes, then you have QRs. Any QR will fit your bike. If you have disc brakes (look for a rotor on the left side of each hub), you probably have thru-axles, but it's also possible you have QRs. If you have thru-axles, you probably need to call Diamondback Bikes. Their FAQ lists a ...


2

You do not need replacement combined shifter and brake units. Those were popular at one time but separate units are the norm now. So you have two separate issues: Finding compatible brake levers and finding compatible shifters. As other have said you need V-brake compatible levers for mechanical disc brakes. This should give you a wide choice and the ...


1

The bolt center diameter is just the circle around the crank axle axis that the center point of the chainring bolts lie on. If you have a even number of bolts the diameter is fairly easy to measure. Pick two bolts where a line between them goes through the axle axis. You can make some sort makeshift calipers if the crank arm gets in the way. If you have an ...


1

Looks like a late 90s BSO. I also notice the boots/stanchions from the forks have rotted and dropped off. And that you're missing the front brakes completely. Not only that, the front rim is completely missing a rotor and doesn't even appear to have a rotor mount. I suspect the front wheel was replaced at some point. As such, this bike is not safe to ...


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