Reddit mentions of SHIMANO MF-TZ21 14-28 Teeth 7 Speed Freewheel

I found infos about an older version of that Bike:

• Freewheel: Shimano MF-TZ21, compliments the all Shimano drivetrain (replacement part)
  
• Tires: KENDA, multi-surfaced 700X40 tires for riding on path or paved surfaces
  
  Question: Do I need to go with a original Shimano Freewheel?
  Apart from getting a quote from a shop my plan of action is:
  
  

1. measuring the hub spacing
   
2. checking the Rim width of the front rim
   
3. looking for a wheel with matching rim width, hub spacing and rim diameter (700c)
   
4. looking for tube and tire for that wheel

Check out my post.

https://www.reddit.com/r/ebikes/comments/chpp6t/first_build_first_ride_tsdz2/

Smooth shifting with new:

SHIMANO MF-TZ21 14-28 Teeth 7 Speed Freewheel

KMC X8.99 Bicycle Chain (1/2 x 3/32-Inch, 116L, Silver)

Getting over 60+ miles using gears first, 75% tour mode, 25% Speed/Turbo mode.

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Kickstand: FORTOP Bike Support Bicycle Kickstand Adjustable Aluminum Alloy for 22" 24" 26" 28" Mountain Bike/Road Bicycle/BMX/MTB/City Commuter Bike/Kids Bike/Sports Bike/Adult Bike/700 Road Bike

Needs to be stripped down and de-scaled/de-rusted as much as possible. Chain removed and probably dropped in bin.
Fine grade steel wool or scotch-brite pads and kerosene can do a lot, and soaking components in Apple Cider vinegar works nicely as well, unless you have access to an Ultrasonic cleaner which is a better option. If you're going to stick with the original wheels, which look like 27s (630mm) then you're stuck with threaded freewheels. The Shimano 7sp HG freewheel is as far as you'll be able to go without either lacing a new hub into the rear wheel or buying a new wheelset in 700c. I'd refurbish the BB and Headset with new bearings, fit cables all over, throw a new freewheel on there and some Tektro r559 nutted mount brake calipers on there, some new Panaracer Pasela 27" tyres on there, job done. Oh, and lose the quill stem extender.

https://www.amazon.ca/Shimano-MF-TZ21-14-28-Teeth-Freewheel/dp/B003EQ71S6/
Lots of under $25 options.

Yes. Higher top gears for faster speeds. I definitely shift using the front too, but only once. It was set on the hardest gear, the front that is, and never changed again. For the riding I've been doing, on and off road, I've never needed to adjust the front. Anything less than the hardest gear, is not nearly hard enough to pedal.

 

Cassette vs freewheel. That was valuable information dude! That's the kind of shit I miss easily. Thank you! I'm going to attach an image of my existing cassette/freewheel and perhaps you can tell exactly what it is. I watched a few videos, and all of them require disassembly to tell what kind it is. Both types look very similar.. at least to me they do. Images: https://imgur.com/a/gy81ho7

 

I'm seeing a bunch of tires for sale, but some of them are "foldable" and others aren't. Does that simple mean it isn't a slick? Or I can fold it for packing?

 

I purchased my bike from a couple of scumbags who own a store in Montreal. They definitely took advantage of the fact that I didn't know much about bikes. Ugh.

 

What do you think of this: https://www.probikekit.ca/bicycle-tyres/vittoria-peyote-folding-mtb-tyre/11436100.html It is the best deal I can find right now, half price. Or this: https://www.sportchek.ca/categories/shop-by-sport/cycling/bike-parts/bike-tires-tubes/product/schwalbe-nobby-nic-275-foldable-tire-332007671.html#332007671=332007683 If I look hard enough, seems like I can find a tire under $40CAD, which isn't bad. Just not sure about the quality. I'm not a hardcore biking, but during season, I do bike almost every single day. So..

 

Based on this: https://www.cycosports.be/en/product/thv047036/ I currently have a 7 gear freewheel, which is pretty much what I'm stuck with because of the existing gear shifting system, right? Which I guess kind of makes life easier having less options.

 

When looking at freewheels, is the "teeth" the "gear ratio"? Or are they different? Is this something I need to pay attention to, or will any 7 speed work? Like this, it has a 14-28 teeth: https://www.amazon.ca/Shimano-MF-TZ21-14-28-Teeth-Freewheel/dp/B003EQ71S6/ref=sr_1_1?ie=UTF8&qid=1541251634&sr=8-1&keywords=7+speed+freewheel But my existing one has a 13-34 ratio.. what does that mean?

 

As for the inner tube.. do I just get something that matches the tire? Will the specs be as easy as 27.5x2.10? Like this: https://www.canadabicycleparts.com/evo-enduro-1-35-1-45mm-tube-10704