New wheels... break-in?
#1
Senior Member
Thread Starter
New wheels... break-in?
Hi All, With a new wheelset I try to get about an hour of minimal load, acceleration, braking and a smooth as possible road, before using them as normal. Is this just a waste of time? BTW, I'm helping someone with a new wheelset who's had problems and he looked at me like I was nuts when I mentioned a break-in period.
TIA, Brad
TIA, Brad
#2
Senior Member
Join Date: Oct 2007
Location: West Yorkshire, United Kingdom
Posts: 5,773
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 453 Post(s)
Liked 104 Times
in
87 Posts
Last new factory wheel I bought, a Fulcrum 7 rear, bought it, tire on, and a 300km audax for its first ride, no bedding in time, no issues several thousand Km later, last wheel I built, tire on, then off road for 25km, about 6-700km off road later no issues.
If the wheel is well built, should ride straight from the box / truing stand with no need for bedding in time. The only thing that needs bedding /breaking in on a bike are disc pads and some suspension forks
If the wheel is well built, should ride straight from the box / truing stand with no need for bedding in time. The only thing that needs bedding /breaking in on a bike are disc pads and some suspension forks
#3
Senior Member
Join Date: Mar 2008
Posts: 8,688
Mentioned: 46 Post(s)
Tagged: 0 Thread(s)
Quoted: 1074 Post(s)
Liked 295 Times
in
222 Posts
Yes-no-maybe. Cartridge bearings will often need some time to work off the first excess seal drag, which if fractions count you don't want to do in a race setting. Likewise unless you go over the wheel by hand, ping the spokes ASO, a soft start can give you time to notice something that's seriously off.
The rest is open for discussion. In even the best built wheel the spokes will do a bit of final settling when the wheel starts rolling. On two occasions I've also noticed a "huge" change in bearing adjustment during an early stage of usage.
I much prefer to see what's happened during that time, although it's probably negligible.
If it was important, it'd be pretty much impossible to sell wheels over the 'net for instance.
The rest is open for discussion. In even the best built wheel the spokes will do a bit of final settling when the wheel starts rolling. On two occasions I've also noticed a "huge" change in bearing adjustment during an early stage of usage.
I much prefer to see what's happened during that time, although it's probably negligible.
If it was important, it'd be pretty much impossible to sell wheels over the 'net for instance.
#4
Senior Member
Join Date: Dec 2007
Location: San Jose, California
Posts: 3,504
Bikes: 2001 Tommasini Sintesi w/ Campagnolo Daytona 10 Speed
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 145 Post(s)
Likes: 0
Liked 35 Times
in
30 Posts
Break-in is primarily a concern for loose ball bearing hubs. Only requires riding around a city block a few times...at which point you want to make your final adjustments to the bearing play.
The final adjustment should hold up well enough for the next tune-up or overhaul for the bike.
=8-)
The final adjustment should hold up well enough for the next tune-up or overhaul for the bike.
=8-)
__________________
5000+ wheels built since 1984...
Disclaimer:
1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:
Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life
5000+ wheels built since 1984...
Disclaimer:
1. I do not claim to be an expert in bicycle mechanics despite my experience.
2. I like anyone will comment in other areas.
3. I do not own the preexisting concepts of DISH and ERD.
4. I will provide information as I always have to others that I believe will help them protect themselves from unscrupulous mechanics.
5. My all time favorite book is:
Kahane, Howard. Logic and Contemporary Rhetoric: The Use of Reason in Everyday Life
#5
Banned
A decent bike shop does include a post break in checkover of whole bike,
wheels and all ..
Being a DIY wheel builder, I took the service tech on my solo tour with me.
Note: Low cost hubs have a rougher cone and cup surface, some burnishing
of the race contact surface will take place, as the balls roll around.
and that will loosen things up a bit.
wheels and all ..
Being a DIY wheel builder, I took the service tech on my solo tour with me.
Note: Low cost hubs have a rougher cone and cup surface, some burnishing
of the race contact surface will take place, as the balls roll around.
and that will loosen things up a bit.
Last edited by fietsbob; 05-10-11 at 06:10 PM.
#6
Banned.
Join Date: Apr 2011
Posts: 937
Bikes: CCM Torino 76
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
On machine built wheels, if the tension and stress relief are not done by hand, there is a break-in period... when a wheel is properly hand built and stress-relieved, the spokes are given excursions up to very very high stress, then retensioned and the wheel re-trued. If the wheel is not properly stress relieved, the high stress comes when riding, and needs to be re-tensioned and trued after a few hundred kms. After a few tens or hundreds of kms, the spokes tension will likely be lower than optimal and so wheel strength is comprimised until the tension is brought back up.
I have never had a set of factory-built wheels (like Shimano, Easton, DT, Zipp etc) and I don't know how they make them, but they generally have a very good reputation for not needing retensioning.
I have never had a set of factory-built wheels (like Shimano, Easton, DT, Zipp etc) and I don't know how they make them, but they generally have a very good reputation for not needing retensioning.
#7
Senior Member
There is no break in period for bike parts. The first adjustments are made after the cables streach. If they are properly prestressed they most likely won't need adjustment.
#8
Senior Member
Join Date: Jan 2004
Posts: 619
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 1 Time
in
1 Post
Properly-built wheels can be treated normally right away. If they are going to untrue themselves, they might as well do so right away so you can fix it as soon as possible.
I build most of my own wheels these days, but when I get a wheel built by a machine I always check it out in a truing stand before I ride it, and in most cases I stress-relieve it and increase the tension. I have seen machine-built wheels with fairly loose spokes.
I build most of my own wheels these days, but when I get a wheel built by a machine I always check it out in a truing stand before I ride it, and in most cases I stress-relieve it and increase the tension. I have seen machine-built wheels with fairly loose spokes.
#9
Senior Member
Thread Starter
Thanks for all of the replys, seems I've been overly cautious.
Brad
Brad
#10
Constant tinkerer
Idk. Even though stuff doesn't break in, it's still a good idea to ride slow for the first mile or two to make sure nothing is seriously screwed up. You don't want to hammer right away and shift your RD into your spokes, for example. (I actually did that once on a bike I bought used, before inspecting it.)
Thread
Thread Starter
Forum
Replies
Last Post
Ataylor
Bicycle Mechanics
11
08-15-19 03:11 AM
smidscot
Bicycle Mechanics
10
09-21-15 11:53 PM