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Freewheel sets.

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Old 07-11-18, 02:25 PM
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caish
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Freewheel sets.

Picked up a Mongoose Stat 29 for nearly free.
Like the design, I'm not a fan of the typical Big Box Bike 3x7 21 speed for a 29er.
So since its a build and sorta budget minded. I have to buy new shifters anyway.
Three choices. Freewheel sets
Sunrace 8 Speed mega range rear, 13-34t
DNP Epoch 9 speed 11-32t
SunRace 10 speed 11-34t
Changing out the BB too and going with 42T-32T-22T
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Old 07-11-18, 03:22 PM
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Maybe just ride what you have until the FW needs to be replaced; it won't take long. At that time, there will be lots of other stuff needing replacement or repair, giving you a great deal of clarity for decision-making.
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Old 07-11-18, 03:39 PM
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caish
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Originally Posted by AnkleWork View Post
Maybe just ride what you have until the FW needs to be replaced; it won't take long. At that time, there will be lots of other stuff needing replacement or repair, giving you a great deal of clarity for decision-making.
I hate 3x7 on 29er wheels, thought I said that before...
Refurbishing this bike,
Thank you!
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Old 07-11-18, 05:44 PM
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Besides the fact that you hate it for only having 7 speeds, what result are you trying to achive by swapping freewheels? Tighter spread? Wider? Bigger Granny cog?

I had no idea that 9- and 10-speed freewheels were a thing. All of my bikes that are 7+ are cassette, so no experience with those freewheels. DNP has a good rep, SunRace is known for being inexpensive.
Keep in mind, though that the 8- and 9- will be wider than your 7-, the 10-speed wider still. You may have to play with the axle spacing / offset to get everything to clear the frame. Every wheel / frame combo is different, so i can't give you any more than the most general answers.
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Old 07-11-18, 06:40 PM
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Originally Posted by caish View Post
Picked up a Mongoose Stat 29 for nearly free.
Like the design, I'm not a fan of the typical Big Box Bike 3x7 21 speed for a 29er.
So since its a build and sorta budget minded. I have to buy new shifters anyway.
Three choices. Freewheel sets
Sunrace 8 Speed mega range rear, 13-34t
DNP Epoch 9 speed 11-32t
SunRace 10 speed 11-34t
Changing out the BB too and going with 42T-32T-22T
You planning on redishing the wheel?
Buying new derailleurs and shifters??
Buying a bottom bracket to correct your chain line?
And I see you're replacing the crank as well.
Congrats thats close to or more than the price of a new bike of the same quality.

Buy a used good bike from craigslist or offerup.
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Old 07-11-18, 06:54 PM
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8/9/10 freewheels should be about the same width.

However, they are about 1/4" wider than 7 speed freewheels.

If you have enough space on the right side of the freewheel, it could be an easy swap. You don't need a lot of clearance.

If not, you may need to change around the spacers some, and redish the rear wheel. Not a big deal, but more work.

Or, you could rebuilt to take a freehub/cassette. Of course, more work, but a stronger wheel.
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Old 07-11-18, 07:00 PM
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CliffordK
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Oh, one other note. I've previously purchased DNP Epoch 7 speed freewheels that ran a bit wide (wide freehub part).

The latest DNP Epoch 9 speed freewheel I purchased was designed to overhang the back side of the freehub, and should be narrower than previous ones. I haven't put it into use yet.
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Old 07-11-18, 08:30 PM
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caish
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I've decided to get the 8 speed,
reading reviews on the 9, and one fellow bent a sprocket on a hard climb.
The 10 just seems it would be to wide..
So just KISS, Keep it Simple Stupid right.
Thanks everyone.
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Old 07-11-18, 11:18 PM
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I've only run 7 speed freewheels.

However, I would think you would need a longer axle and may possibly have to widen the rear dropouts to accommodate the 8 speed freewheel. It is fairly easy to see how much clearance you have between the current small cog and the dropout. As noted already, if you have about 1/4" you'll have no problem using your current setup and just thread on the new 8 speed.

The other alternative is to remove spacers from the non-drive side and add spacers/washers to the drive (freewheel) side and re-dish the wheel. Depending on what is on the wheel now, it may not be possible to just move a spacer from one side to the other. But you want to keep the total over lock nut measurement close to the same as the original. You can probably go over by a couple of mm and still be able to fit it in the frame.

​​​​​​​John

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Old 07-12-18, 07:17 PM
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The more gears you put on a freewheel the farther it is out from the bearing and more likely it is to break. On a super cheap bike it is even more likely and especially so if you decide to take it on anything bumpy. It really isn't worth putting money into it so I would probably run the bike into the ground which shouldn't take long and spend your money on something quality that has the gearing you want!
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