April 23, 2018
Shimano MF TZ-21 Freewheel 7-row 14-28T Brown
Number of rows-7
BAVEL Commuter Aluminum Road Bike Shimano 21 Speed 700c
- Pedal threads are different from left side and right side.
- L / R signs are marked on the spindle of the each pedal, make sure they are assembled on the right side (when you ride on the bike, left pedal on your left side, right pedal on your right side).
- The right side pedal has a right-hand thread(removes counterclockwise, installs clockwise).
- The left side pedal has a left-hand thread (removes clockwise, installs counterclockwise).
- Thread both pedals into the crank arms as far as you can by hand.
- If the pedals are not fully tightened, it may get loose and damage the threads, we will NOT be responsible for such damages.
- This unbelievable offer will not last long at this price, so don’t miss out!
- Looking forward to springtime to ride more than a block.
- Light bike compared to what you find a big box retailers.
- Road bike tires – should be faster than my mountain bike.
- I may update this review in the spring with more details.
- I would definitely recommend this to a friend based on the “sale” price.
- Update: I had to take mine to a shop for some repairs – the rear derailer was bent and the front gears didn’t shift right.
- It also had other problems that I ended up fixing by watching Youtube (loose bottom bracket, brakes, front hub).
- Customer service was helpful in getting the repairs covered, but if they would provide better video tutorials on how to adjust these things yourself as the consumer, it would save a lot of hassle for them and me.
- I bought the bike a few months ago and just recently have I gotten to ride it much.
- My very first ride out and the seat breaks two miles away from my house.
- I mean, I had to peddle uphill with the seat wobbling and slanting upwards (talking about painful).
- Not only that, but before the seat broke, the bolt on the seat cut into my thighs.
- The flaws in the design of the seat is enough to make anybody decide against buying this bike.
- Second ride, I had to ziptie one of the brake lines to the frame because it was sagging down, rubbing against the tire.
- Because of this, the line now has a burn and is exposing wire.
- They screech absurdly loud even after several trips on the bike.
- All in all, the ride is extremely uncomfortable and it’s hard to enjoy the experience when you’re in so much pain.
- It’s a great looking bike, but I could’ve gotten better quality from a Huffy at Walmart.
- Seller asked me to take my bike to repair shop to get the problem resolved and paid for the tune up.
- Update: seller contacted me and I am currently working with them.
- Once my problem is resolved, I will update the review to reflect it.
- Since I put it together, I’ve noticed disk break in front wheel is uneven width and it is making noise every time the wheel rotates.
- Also, during changing gears, many time it doesn’t switch, and I would have to put the appropriate gear in the previous positions and then try again and would work sometime.
- Doesn’t seem like seller done any tuning before shipping.
- I would like to have my problem fixed or would have to return it.
- Like any bike out of the box, you will need to adjust the brakes and other things, but the ride is SMOOTH!
- Tires are great, love the disc brakes, and the shifters are amazing.
- I definitely recommend this bike, especially for the price.
- The only negative to it is how much tweeking my husband had to do with the breaks and gears whend he was assembling it, and my front break still scrubs occasionally when riding.
- But, other than those minor details, it is overall a great bike!
Shimano 7-Speed Tourney Bicycle Freewheel – MF-HG37
- All of the sprockets are threaded directly to the body, unlike the OEM Shimano freewheel that it replaced.
- The original Shimano freewheel that came with my bike had the two largest sprockets riveted like outriggers to the fifth largest sprocket.
- I also note that this MF-HG37 is made in Singapore, while the crummy Shimano freewheel that came with the bike was made in mainland China.
- The MF-HG37 is probably the best choice if your bike is equipped with a seven speed freewheel.
- Unfortunately, that’s not saying a great deal because the field is so limited and low end since Sun Tour went out of production years ago.
- Regardless of your choice, the metallurgy in the sprockets is mediocre and you can expect the smallest sprockets to wear out and start jumping.
- Alternatively, you can go with the DNP lineup for better gearing arrangements but at the cost of a fragile body assembly and even lower quality sprockets.
- The conventional wisdom had been that freehubs (together with their cassettes) would become nearly univeral.
- Freewheels were expected to disappear except on Wal-Mart level bicycles.
- That hasn’t happened, and you can still find lots of Treks and Motobecanes with seven speed freewheels instead of freehubs.
- Those freewheel equipped bikes can be fairly pricey at the LBS if they come with a good frame and otherwise good components.
- Shimano needs to recognize that there’s a market for better quality freewheels.
- I’d really like to see Shimano re-introduce a freewheel that deserves to be in the Altus product line.
- Better metallurgy is a must, at least in the smallest sprockets.
- I quickly learned that it was indeed a freewheel I needed not a cassette.
- A freewheel is a one piece gear cassette and freehub body in one piece.
- A freewheel screws directly on to your wheel in one piece rather than having a freehub body mounted on it and then a cassette mounted over the freehub body.
- I just thought I would include this information for someone who may not yet know the difference between a freewheel and a freehub body and cassette.
- This freewheel uses the Park FR-1 Freewheel and cassette removal tool.
- You will not need a chain whip to remove a freewheel but a corresponding freewheel cassette tool to remove.
- You need nothing to install it as it tightens with the pedaling of your bike.
- I would advise tightening it up a bit with the Park FR-1 tool though.
- I would recommend this freewheel to anybody who needs one!
- It was a couple mm’s wider than the original freewheel but it still fit on my frame without any issues.
- It’s been running solid for several weeks now and I’ve put about 50 miles on it.
- Nice that it saved me the expense of converting an older bike to using a freehub in the rear; I’d likely had to have had a custom wheel built as this older bike uses 26″ rather than 29″ wheels.
- I managed to crack the smallest sprocket on the freewheel while climbing hard on an uphill bridge.
- I inspected the original freewheel and identified the tool I needed to remove the freewheel (Park FR-1), and proceeded to replace the assembly.
- The Shimano HG37 is well made, with all of the sprockets cut properly and nothing wobbling or bent out of shape.
- It also felt somewhat lighter and also looks more aesthetically appealing.
- Once installed, I took the bike out for a spin and immediately noticed smoother and quieter shifting while the freewheeling ratchet sound also changed.
- It was easy to install and I had to use a bench vise with the FR-1 tool to remove/tighten the freewheels.
- Overall: 5/5 stars, extremely well made replacement freewheel.
- It’s not an Ultegra or Dura-Ace freewheel/cassette, but it sure as heck beats the cheap parts used on department store bicycles.
- I kind of wish I could find a 7-speed freewheel with a 11-tooth sprocket.
- This should absolutely never, ever happen with a new freewheel.
- Economically the best option is to toss it and find a better one, or better yet switch to a freehub/cassette.
- This is so ridiculous an issue that I’ve downgraded my review to 1 star.