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| Motorized Bicycle General Discussion Topics on bicycle engine kits, help articles, repair and modifications for your motorized bicycles |
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03-10-2010, 11:15 PM
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Motorized Bicycle Elite Member
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Join Date: Feb 2010
Location: Baltimore, Maryland
Posts: 138
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Simulated Break In Period
I was thinking, is there any way to simulate the break in period for an engine? Like maybe pop the back wheel up and run the bike for 30 minutes at ~15 mph. Then, let it rest, repeat for 3-4 tanks? I realize without the weight on the bike, 15mph wouldn't be 15 mph. Also if the speedo is mounted on the front tire it would be impossible to tell the speed unless the speedo was moved. Maybe just go to 1/2 throttle and let it run.
It's definitely not that I don't want to ride my (future) MB, it's just it would take a very long time for me to ride 300-600 miles at under 15mph, what with school and work and things.
Does anyone know a fast way to break in an MB?
By the way the speed and miles needed to ride for the break in time were from King's Motorbikes.
Thanks.
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03-11-2010, 12:55 AM
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Motorized Bicycle Elite Member
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Join Date: Oct 2009
Location: Tucson, ZonieLand
Posts: 413
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Re: Simulated Break In Period
That defeats the purpose of having a motorized Bicycle.
You do not have to keep your bike under 15mph at all. The first time I fired mine up I was hitting 23mph Full throttle, Just do not go WOT for miles at a time. Make sure to warm you bike up really good before you go full throttle. I would start with 20:1 or 24:1 for the first 2-4 tanks, then switch to 32:1.
Make sure you tune your bike to her best before you start putting miles on her.
Hope this helps
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03-11-2010, 01:24 AM
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Motorized Bicycle Elite Member
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Join Date: Feb 2010
Location: Baltimore, Maryland
Posts: 138
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Re: Simulated Break In Period
OK, that does help. The main thing was the speed issue, I can ride about 15mph almost constantly, except uphill, so I'm glad to hear I don't have to stay below that. In that case, I don't think I'll mind breaking in my engine at all  . Thanks!
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03-11-2010, 01:53 AM
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a guy who makes cool bikes
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Join Date: Aug 2009
Location: orange county, ca
Posts: 4,495
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Re: Simulated Break In Period
i break in all my bikes the way i ride them. basically full throttle. i do take the time to clean up the motors before even running them, though. like porting the intake and exhaust, cleaning up the transfer case ports, etc...
it's a little more work, but it pays off.
my first bike, i tried to baby it for the first day, then couldn't take it anymore, and just rode it flat out. the motor still works great after 1500 miles or so.
and seriously, if you run your bike stationary for 30 minutes at a time, letting it cool down, then doing it again, you might as well get a pack of smokes and spend a day raging around town...
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03-11-2010, 05:43 AM
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Godfather of Motorized Bicycles
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Join Date: Jan 2008
Location: Ashtabula county, Ohio
Posts: 10,003
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Re: Simulated Break In Period
Vary the throttle amount and engine RPM and no long downhill runs with the throttle closed.
That is all, ride it.
__________________
If it ain't broke, and you mess with it long enough, it will be.
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03-11-2010, 02:04 PM
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Motorized Bicycle Senior Member
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Join Date: Jan 2010
Location: chicago
Posts: 63
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Re: Simulated Break In Period
i just ran 32:1 right off the bat, and rode the **** out of it.. so far so good after about 20 miles and the engine is creating more power an rev.
now i just gotta wait for a Heavy Duty freewheel for my SBP shift kit.
dont be cheap and buy the cheasy freewheel, spend the extra cash for the HD!
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03-11-2010, 02:09 PM
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Motorized Bicycle Elite Member
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Join Date: May 2009
Location: Maine
Posts: 389
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Re: Simulated Break In Period
For the first few miles I ran mine pretty slow anyway. Just getting used to it, how it rode, and if something breaks or the chain pops off going 10-15mph not as much damage will happen as with 30mph. 32:1 seems a bit oil rich, I've been running 50:1 synthetic for well over 3000 miles, and my engine still runs great, high compression, and I can cruise over 30 all day.
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03-11-2010, 03:19 PM
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Motorized Bicycle Elite Member
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Join Date: Feb 2010
Location: Baltimore, Maryland
Posts: 138
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Re: Simulated Break In Period
Quote:
Originally Posted by bairdco
i break in all my bikes the way i ride them. basically full throttle. i do take the time to clean up the motors before even running them, though. like porting the intake and exhaust, cleaning up the transfer case ports, etc...
it's a little more work, but it pays off.
my first bike, i tried to baby it for the first day, then couldn't take it anymore, and just rode it flat out. the motor still works great after 1500 miles or so.
and seriously, if you run your bike stationary for 30 minutes at a time, letting it cool down, then doing it again, you might as well get a pack of smokes and spend a day raging around town...
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Just going off what King's Motorbikes said
Quote:
Originally Posted by Bikeguy Joe
Vary the throttle amount and engine RPM and no long downhill runs with the throttle closed.
That is all, ride it.
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Again it seems like King's was waaaaay off about break in period. Sounds like many of the members just rode their MB's like normal and it eventually broke in, increased power etc...
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03-11-2010, 05:29 PM
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a guy who makes cool bikes
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Join Date: Aug 2009
Location: orange county, ca
Posts: 4,495
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Re: Simulated Break In Period
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03-11-2010, 06:42 PM
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Godfather of Motorized Bicycles
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Join Date: Jan 2008
Location: Ashtabula county, Ohio
Posts: 10,003
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Re: Simulated Break In Period
Almost (if not all vendors) go by the "instructions" that come from China.....'nuff said.
__________________
If it ain't broke, and you mess with it long enough, it will be.
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