Measure the distance from the center of the bottom bracket/crank to the top of the seat tube.
This is your frame size.
Hey, Local bike shop determined that both wheels were defective. I took the junk back to Walmart and got a refund... PROBLEM SOLVED!!
Check out https://gearly.org/ for more info.
Thanks.
SOURCE: front suspension to soft on mongoose xr-75
The front forks aren't adjustable, as you probably figured out. You can, however, get harder springs if the springs can be accessed at the top of the fork tube. If not, do what I did on my mountain bike. I bought a better pair of adjustable forks that I found on eBay. It will take a bit of investigation on your part regarding the dimensions of the forks, so you get the correct length and width where the forks fit onto the frame (and the overall desired fork length), but you'll be a lot happier with adjustables.
SOURCE: New Mongoose 700c Men's Paver bike: Mongoose 700
Local bike shop determined that both wheels were defective. I took the junk back to Walmart and got a refund... PROBLEM SOLVED!!
SOURCE: Mongoose Handlebar adjustment
where the bars slide into forks there should be a allen nut on the top undo this slightly and adjust bar height then tighten up allen nut
SOURCE: loose handlebars on a Mongoose XR-75 mountain bike
Check the splines on the handle bar. Just loosen the "clamp" and slide the bar over to one side enough so you can tell if the are stripped or not. If they are then replace the bar, if not then reassemble and try to put a littlle extra torque on the bolt.
I have noticed with the 2 of these bikes that I have that the bars do not like to stay tight for long, they tend to work thier way loose about every other time we use them. I just keep tightening them untill the splines strip, then pick up a new bar.
Contact Mongoose for parts info at: www.Mongoose.com under "about" click ask mongoose.
Good luck.
SOURCE: mongoose tactic mountain bike / loose crank on
The crank has to be removed to tighten the nut that holds the gear on. I assume that is your problem is with the chain gear on the sproket that is loose
Testimonial: "I need a special tool to remove crank /nothing Ive ever seen"
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