Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take part in the June Giveaway for NAKTO Camel e-bike worth $739


Pedals will just spin at low temperature
#1
My pedals are just spinning when my bike is cold.
I have goggled and I found that i probably is the freehub (does my bike have a freehub?). Is it worth/possible to fix that one or should I replace it?
What parts & tools do I need?

Any other parts that I should change when I'm on it?

It’s a Scott SUB 30 from 2008 that I use year around to work (3+3 mile).

http://www.bikepedia.com/QuickBike/BikeSpecs.aspx?Year=2008&Brand=Scott&Model=Sub%2030%20Classic&Type=bike

Thanks for the help.

/Chr
  Reply
#2
Probably it is the freehub getting gummed up inside. The grease inside gets thicker when it's cold. The quick fix is to flush some lube into it
- Lay the wheel on its side
- as you spin the cogs, dribble some penetrating oil, solvent, etc at the juncture between where the inner part stays still and the outer part spins. Hopefully you'll see it come out the back looking a lot darker and thicker as it washes out the old, hardened grease
- then flush through enough heavier oil to get all the solvent out and to relube.
- be careful to avoid getting any of this into the wheel bearings if you can
- lots of rags underneath, you're going to make a mess.

If this doesn't fix it, you can replace the freehub itself fairly easily.
  Reply
#3
Thanks, do I need exact the same freehub like the one I got "Shimano BB-UN26" or can I take any Shimano? What’s the difference of them?
I suppose that I need a special Shimano tool? If yes, which one?

/Chr
  Reply
#4
The BB-UN26 is the bottom bracket. It is not the freehub. The freehub is the hub on the rear wheel.
  Reply
#5
Your freehub was originally: Shimano FH-RM30

Here is the replacement: http://www.amazon.com/Shimano-FH-RM30-Freehub-Body-Speed/dp/B0029LF0SA/

You need a 12mm allen key that fits in your socket set; it will take quite a bit of torque to remove it.
Nigel
  Reply
#6
What condition is the rim in? If worn then it will probably be a good idea to replace the whole wheel
  Reply


Possibly Related Threads...
Thread
Author
Replies
Views
Last Post

Forum Jump:

[-]
10 Latest Posts
Rode my First Double Century in June
Yesterday 10:50 AM
ZULIANI Oria 'helical' tubing 80s
06-30-2022 05:03 AM
NAKTO Giveaway June 2022
06-28-2022 03:52 AM
NAKTO GIVEAWAY
06-28-2022 12:16 AM
2022 road cycling season
06-27-2022 02:31 PM
OnGuard K9 Folding Plate Lock
06-27-2022 10:38 AM
Bike for commuters
06-27-2022 05:50 AM
Rim replacement for Old Cosmos SuperCors...
06-26-2022 11:24 PM
What was your first bicycle?
06-26-2022 07:18 PM
Identification help
06-25-2022 08:19 PM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. Jesper
19 posts
no avatar 2. Yevhen
9 posts
no avatar 3. ReapThaWhirlwind
8 posts
no avatar 4. Munich Transfers
7 posts
no avatar 5. Hoodoo Creek
7 posts