What is a Crmo bike frame?

Chromoly is a chrome-alloy steel with a medium carbon content and . It is a steel that is stronger than carbon steel (more commonly used in bike manufacturing), so we can use thin wall tubing, giving you a lightweight frame that will last through years of riding.

Is a chromoly frame good?

A workhorse of the industry, chromoly is a light, strong steel. When it is butted and shaped to take off excess weight, it can deliver a fairly light frame that will last through years of hard use. Chromoly is responsive and offers good flex while maintaining its form.

Are Specialized bikes reliable?

Generally, Specialized are a reputable brand who produce high quality bikes, however there are one or two points to bear in mind if you’re thinking of splashing out on one. Like most top bike manufacturers they produce a very expensive top end range, where you can expect to get an awful lot of bike for your money.

Are all chromoly 4130?

Chromoly steel is actually alloy steel grade 4130. The added chromium and molybdenum help to give the steel different properties from its mild steel counterpart, AISI 1030, even though they have the same percentage of carbon.

Do chromoly frames rust?

With its resistance to extreme temperatures, chromoly steel needs a special welding technique when building frames or joints. Chromoly steel is also treated before and after manufacturing to increase the natural resistance to corrosion, dramatically lessening the chance of rust.

What does 4130 mean?

The 4130 is a code of the American Iron & Steel Institute and defines the approximate chemical composition of the steel. The “41” denotes a low alloy steel containing nominally 1 percent chromium and 0.2 percent molybdenum (hence the nickname “chromalloy”). The “30” denotes a carbon content of 0.30 percent.

What kind of bike is the specialized Hardrock 21 speed?

Specialized Hardrock 21 speed Mountain Bike in nice used condition. It has 26 inch wheels. The top tube length is 18 inches. The hubs. Shifters, cranks, more deraileurs are Shimano Acrea X. The paint has some chips and scrapes as you can see in the pictures. It will need to be tuned up.

Is the Hardrock still the best mountain bike in its class?

Better than ever after all these years, our Hardrock is still the best performing mountain bike in its class and for good reason. With its lightweight frame, stable geometry and outstanding specification, no other entry-level hardtail on the market can match this combination of performance, versatility and value…

What are the dimensions of the hard rock 21 speed GS?

Description: Brand: Hard Rock Model: 21 Speed GS Specialized Mountian Bike w/ Gel Seat Color: Blue Dimensions: 16″Frame 26″Tires Location: PLEASE EBAY MESSAGE FOR THE LOCATION OF THIS ITEM. If you are picking this item up locally instead of having it shipped please be aware that the item may not be located in our store.

What makes the specialized hardtail frame design so special?

The frame design, detail and finish certainly impress, with the same curved downtube as Specialized’s higher-end hardtails providing built-in protection from hard impacts up front. The swoopy theme extends to the rear, with stays performing ankle-clearing wiggles on their way from the seat tube to the elegantly curved dropouts.