Single speed slowin down

SS and Fixie bikes whether from Walmart or other stores.
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Single speed slowin down

Postby Zumwalt » Sat Feb 04, 2017 6:58 pm

Picked up this single speed Mongoose Sinsure at Marshalls for 99$... so far its a great bike.. i noticed when cruising down the street and i stop pedaling, it gets slower fast. not like anyother bike ive had when you stop pedaling and you stay a good speed for a while.. brakes are pad to frame style and not rubbing... wheels are straight.. any ideas?
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Re: Single speed slowin down

Postby jasnooks » Sat Feb 04, 2017 10:23 pm

Are you sure the brakes aren't rubbing?
Are you riding uphill, or is it a flat road?
Hub bearings could be to tight.
Tire pressure could be low.
Bulky winter clothes will really slow you down fast with even a light headwind.

That's all I can think of right now.

Sharp looking bike.
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Re: Single speed slowin down

Postby Tomcat65 » Sun Feb 05, 2017 9:26 pm

The single speed freewheel could possibly be dragging internally.. possible, But not likely. The hubs probably need servicing, There's not much grease in there from the factory on a lot of bikes. A couple of cone wrenches and you'd have very little $$ in the servicing of a single speed. Jasnooks is right on with his list of suspects, but there is another major consideration. That's the tires themselves
Rolling resistance is a huge issue with tires, thread count (tpi), pressure, tread, treadwidth, sidewall material, all add up together for overall rolling resistance and tread life
Rolling resistance is most noticed in exactly the situation you describe, Stop pedaling and coast, 2 different tire sets on the same wheels will perform differently. High rolling resistance wastes your energy and costs you speed
So, High quality tires are often worth the $$ in the long run, if you ride a lot
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Re: Single speed slowin down

Postby endomaster » Sun Mar 26, 2017 9:34 pm

I owned that same bike, purchased it from Walmart a couple of years ago and have since sold it but some things I fixed on mine which may help you. The rear wheel was bolted on so tight I needed a breaker bar to remove it, I was fortunate the axle wasn't bent, that's how tight it was. I serviced both front and rear wheels, properly greased bearings and adjusted the cones. Second, I ditched the tires it came with, aside from being poor quality, they added so much drag it was incredible. Those two items transformed the bike and were instantly noticeable on any ride. Prior to that the bike would slow down fast after I stopped pedaling. not just coast but noticeable slowing.

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Road
2011 Felt Z100 - SS conversion
2011 Ragley Cragg Vale
2016 PlanetX Pro Carbon

Mountain
2011 On One Inbred SS

General Use
1993 Mongoose Crossway 625
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