Frozen Freehub, Common Occurence?
#1
Senior Member
Thread Starter
Frozen Freehub, Common Occurence?
I had my freehub refuse to engage during one commute last year toward the end of winter. It effectively brings your ride to a halt (unless the remainder of your ride is downhill). This was likely caused by condensation due to the fact I use indoor parking at the university.
Has anyone else had this happen? Any tips for preventing this or dealing with frozen freehub pawls should it occur on the road?
Has anyone else had this happen? Any tips for preventing this or dealing with frozen freehub pawls should it occur on the road?
#2
Banned
Join Date: Feb 2008
Location: Mississauga/Toronto, Ontario canada
Posts: 8,721
Bikes: I have 3 singlespeed/fixed gear bikes
Mentioned: 30 Post(s)
Tagged: 0 Thread(s)
Quoted: 4227 Post(s)
Liked 2,488 Times
in
1,286 Posts
If it's a Shimano freehub then it's possible to take it off and dissassemble it, clean the insides out, put some very light grease on the bearings and some light oil on the pawls and then assemble it back together. Most people don't do this and it's not reccomended by Shimano.. but it can be done. The easiest thing to do is to buy a new freehub body, they're not very expensive.
#3
Senior Member
Join Date: May 2003
Location: Hampton Roads VA
Posts: 1,787
Bikes: '07 Trek 520, '09 Gary Fisher Triton, '04 Trek 8000, '85 Trek 500, '84 Trek 610, '85 Trek 510, '88 Trek 660, '92 Trek 930, Trek Multitrack 700
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 19 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
Easy fixes for Shimano and a few others can be found here.
https://www.parktool.com/blog/repair-...reehub-service
https://www.parktool.com/blog/repair-...reehub-service
__________________
"When I hear another express an opinion, which is not mine, I say to myself, He has a right to his opinion, as I to mine; why should I question it. His error does me no injury, and shall I become a Don Quixot to bring all men by force of argument, to one opinion? If a fact be misstated, it is probable he is gratified by a belief of it, and I have no right to deprive him of the gratification."
T. Jefferson
"When I hear another express an opinion, which is not mine, I say to myself, He has a right to his opinion, as I to mine; why should I question it. His error does me no injury, and shall I become a Don Quixot to bring all men by force of argument, to one opinion? If a fact be misstated, it is probable he is gratified by a belief of it, and I have no right to deprive him of the gratification."
T. Jefferson
#4
Full Member
Join Date: May 2009
Location: Wisconsin
Posts: 359
Bikes: Salsa Fargo, One-One Inbred 29er, Blue Norcross
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
I've had it happen with a Shimano freehub. I didn't totally disassemble the freehub; I just removed it, and pulled the back gasket. Then I used tons of WD-40 on it to displace the water. I blew it out with an air compressor, then let it dry. The next morning I squirted oil in, and replaced. That was 1 1/2 winters ago (the first winter on the hub), and I haven't had any problems since.
#5
Senior Member
Thread Starter
A freehub on a different bike started getting clunky at -3C the other day, and even more at -12C. So I removed the hub and gave it a good cleaning and it was fine yesterday.
One important thing I discovered a few years back, don't use very much oil inside the freehub (a few drops should be enough). I put too much in and it leaked out into the drive side bearing race dissolving all the grease. Eventually the bearings stopped rolling and started to disintegrate.
One important thing I discovered a few years back, don't use very much oil inside the freehub (a few drops should be enough). I put too much in and it leaked out into the drive side bearing race dissolving all the grease. Eventually the bearings stopped rolling and started to disintegrate.
#6
Senior Member
Join Date: Aug 2012
Location: Colorado Springs
Posts: 1,134
Bikes: Borealis Echo, Ground Up Designs Ti Cross bike, Xtracycle, GT mod trials bike, pixie race machine
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Likes: 0
Liked 2 Times
in
2 Posts
I would just flush out all the old grease and relube your freehub with Dumonde Tech's freehub oil. It works in extremely cold areas and does not thicken up like a lot of greases can.
PRO X Freehub Oil | Dumonde Tech | Bicycle Chain Lube | Motorcycle Oil | Bike Lube | Chain Lubricant|
PRO X Freehub Oil | Dumonde Tech | Bicycle Chain Lube | Motorcycle Oil | Bike Lube | Chain Lubricant|
#7
Fahrradfahrer
Join Date: Sep 2014
Location: Anchorage, Alaska
Posts: 367
Bikes: n+1
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
That seems pretty warm to me for this to happen, but the grease on the pawls inside the freehub body can freeze, and stop them from engaging. Often, if you pedal like a madman, they will eventually catch until you coast again. Obviously, you can't ride your bike like this.
Follow this link for some good info on how to solve this problem.
Winterizing Your Freehub
Follow this link for some good info on how to solve this problem.
Winterizing Your Freehub
#8
Full Member
Join Date: May 2009
Location: Wisconsin
Posts: 359
Bikes: Salsa Fargo, One-One Inbred 29er, Blue Norcross
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
One other thought; you can get "freezing" of the pawls due to corrosion as well. I just dealt with that in the hub that is on my (winter included) commuter. Needed to let is sit in solvent for a while, then re-oiled it. So while it may be warm for actual freezing (of intruded water), it is never too warm for rust.
#9
back in the saddle
Join Date: Jan 2006
Location: Central WI
Posts: 634
Bikes: Raleigh Olympian, Trek 400, 500, 1500, 6700, Madone 6.9, Sekai 2400, Schwinn Passage, KOM, Super Letour, Nishiki Sport, Vision R45, Bike E, Volae Team
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 2 Times
in
2 Posts
I've had it happen with a Shimano freehub. I didn't totally disassemble the freehub; I just removed it, and pulled the back gasket. Then I used tons of WD-40 on it to displace the water. I blew it out with an air compressor, then let it dry. The next morning I squirted oil in, and replaced. That was 1 1/2 winters ago (the first winter on the hub), and I haven't had any problems since.
#10
working on my sandal tan
Join Date: Aug 2011
Location: CID
Posts: 22,629
Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)
Mentioned: 98 Post(s)
Tagged: 0 Thread(s)
Quoted: 3871 Post(s)
Liked 2,568 Times
in
1,579 Posts
A freehub on a different bike started getting clunky at -3C the other day, and even more at -12C. So I removed the hub and gave it a good cleaning and it was fine yesterday.
One important thing I discovered a few years back, don't use very much oil inside the freehub (a few drops should be enough). I put too much in and it leaked out into the drive side bearing race dissolving all the grease. Eventually the bearings stopped rolling and started to disintegrate.
One important thing I discovered a few years back, don't use very much oil inside the freehub (a few drops should be enough). I put too much in and it leaked out into the drive side bearing race dissolving all the grease. Eventually the bearings stopped rolling and started to disintegrate.
#11
Member
Join Date: Sep 2005
Location: Ontario, Canada
Posts: 34
Bikes: Giant TCR, TCX, Trinity, Bowery, NRS
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Bit late on this thread. This happens to me so this is my solution (hopefully). I tried this before with oil, next time I am going to try a grease like for snowmobiles. You may also need the wifes permission to do this operation. Get a tin can and put a wad of the grease in it. Heat it on the kitchen stove until very hot. carefully drop the freehub into it. Make sure there is enough liquid to completely cover the freehub. Let it simmer in there for a while. When I did this with oil I could see the water leaving the body.
Hopefully the liquid grease will find its way into the freehub and be ready to go when cooled. I actually plan to let mine set in the cooled/cold grease before I remove it.
Hopefully the liquid grease will find its way into the freehub and be ready to go when cooled. I actually plan to let mine set in the cooled/cold grease before I remove it.
#12
working on my sandal tan
Join Date: Aug 2011
Location: CID
Posts: 22,629
Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)
Mentioned: 98 Post(s)
Tagged: 0 Thread(s)
Quoted: 3871 Post(s)
Liked 2,568 Times
in
1,579 Posts
Bit late on this thread. This happens to me so this is my solution (hopefully). I tried this before with oil, next time I am going to try a grease like for snowmobiles. You may also need the wifes permission to do this operation. Get a tin can and put a wad of the grease in it. Heat it on the kitchen stove until very hot. carefully drop the freehub into it. Make sure there is enough liquid to completely cover the freehub. Let it simmer in there for a while. When I did this with oil I could see the water leaving the body.
Hopefully the liquid grease will find its way into the freehub and be ready to go when cooled. I actually plan to let mine set in the cooled/cold grease before I remove it.
Hopefully the liquid grease will find its way into the freehub and be ready to go when cooled. I actually plan to let mine set in the cooled/cold grease before I remove it.
#13
Member
Join Date: Sep 2005
Location: Ontario, Canada
Posts: 34
Bikes: Giant TCR, TCX, Trinity, Bowery, NRS
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
The idea is that the hot grease gets into the freehub and then sets up again. I think a extreme low temp grease would offer better protection than oil. I guess I will have to try it and see.
#14
working on my sandal tan
Join Date: Aug 2011
Location: CID
Posts: 22,629
Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)
Mentioned: 98 Post(s)
Tagged: 0 Thread(s)
Quoted: 3871 Post(s)
Liked 2,568 Times
in
1,579 Posts
I suspect, but leave up to you to find out, that if you let the freehub sit in the grease bath while it cools down, that it will end up so packed full of grease that it may not even function well in warm temperatures. But the bearings would be really happy.
#15
Member
Join Date: Sep 2005
Location: Ontario, Canada
Posts: 34
Bikes: Giant TCR, TCX, Trinity, Bowery, NRS
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Good point. Maybe remove when hot then and let drain. This is for my winter beater bike. I rode it the other day -25 and was constantly losing drive.
#16
Senior Member
That man that writes those really good bicycle maintenance books covers this well with pictures to boot.
Cheers,
David in Alaska
Cheers,
David in Alaska
#17
Senior Member
Join Date: Apr 2007
Location: Ottawa, Canada
Posts: 777
Bikes: Raleigh Classic 15, 84; Miyata 912, 85; Miyata Ridge Runner SE, 85; Miyata 610, 86; Miyata 100M, 86; Miyata Valley Runner, 88; Miyata Triple Cross, 89; GT Karakoram, 90; Miyata Elevation 300, 91; Marinoni Touring, 95; Long Haul Trucker, 2013
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 159 Post(s)
Liked 133 Times
in
80 Posts
Don't use grease in the freehub! I used gear oil in mine this winter and it was much too thick. Seized on the really first cold day. I'd say use the lightest oil you can find.
#18
Banned
Join Date: Sep 2010
Location: lower mitten
Posts: 1,555
Bikes: With round 700c & 26" wheels
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
I keep mine packed with marine grease, and I always park my bike in non heated garage after each ride. This way I'm sure that whatever moisture got in, it won't have a chance to freeze.
I think I took hub apart only once, and the bike was bought in 2010. Didn't have any issues with Shimano freehub yet.
I think I took hub apart only once, and the bike was bought in 2010. Didn't have any issues with Shimano freehub yet.
#19
Sheeeee-it!
Join Date: Jun 2012
Location: Canada
Posts: 222
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
I've had it happen with a Shimano freehub. I didn't totally disassemble the freehub; I just removed it, and pulled the back gasket. Then I used tons of WD-40 on it to displace the water. I blew it out with an air compressor, then let it dry. The next morning I squirted oil in, and replaced. That was 1 1/2 winters ago (the first winter on the hub), and I haven't had any problems since.
#20
working on my sandal tan
Join Date: Aug 2011
Location: CID
Posts: 22,629
Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)
Mentioned: 98 Post(s)
Tagged: 0 Thread(s)
Quoted: 3871 Post(s)
Liked 2,568 Times
in
1,579 Posts
So I removed the freehub body and flushed it with some WD-40 after wiping out the bearing track. It turned out that some of the wheel bearing grease had migrated into the freehub mechanism and gunked it up. After working enough of the WD-40 through it, the freehub spun as freely as it was supposed to, and that was a lesson that I should probably allow more time for the solvent and excess oil to drain out before reinstalling, and to go a little lighter on the grease when repacking the wheel bearings. For what that's worth.
Thread
Thread Starter
Forum
Replies
Last Post
TallRider
Bicycle Mechanics
9
02-05-10 09:52 AM