What are you trying to achieve with this post? How the dyno break in process works? What is the process of bringing a motor to temp, cool down, heat cycles....? Two sides to this method of breaking in a motor. Might be good to hear from a dyno tuner that would share his expertise.

 

This ^^.

Plus, every new bike gets a dyno run at the factory.

 

all fuelmoto engine builds are broken in on the dyno. done right, you'll have a good running engine. done wrong, well....... same as if done wrong on the street.

 

The point is I'm shocked people pay to have motor work done and then instantly killing it on a dyno before a proper break in. I thought the bikes are run a little at the factory but if it's as easy as the one mentioned on a dyno, wouldn't it be broken in at the factory so they could end this debate right there? The Donny Petersen method seems the way to go.

 

Heat cycle, to let everything expand and contract to seat themselves in.

 

With dyno controlled environment break in being the best way to go, why isn't every
dyno shop or dealer with a dyno offering this service?

 

You are talking to yourself.

 

I'm working and trying to post as I work. That's why I'm giving multi posts.

 

Hopefully someone who *actually* knows what they are talking about (Like Jamie or Scott from Hillside) will chime in on this thread.

Clearly, however, many extremely reputable builders recommend and do dyno break ins, and their builds are not spontaneously blowing up after 1000 miles.

So, while I understand that it must seem unwise to the less knowledgeable among us, empirical evidence shows otherwise.

 

I've been to the York Pa plant and watched them take every bike coming off the assembly line and run it on a dyno. They are not actually tuning them, but rather making sure that each bike meets predetermined bench marks. That being said, they do run them up to about 90mph. While they are not using drag race performance they don't baby them either. the 5 or 6 that I saw were run up to the limiter in most gears. They have digital displays so that people who take the Steel Toe tour can see the rpm's and mph. The tester has a bank of gauges and monitors in front of him

Anyhow, my point is that our bikes are put on a dyno a subjected to high rpm and speed at the factory, with no actual tuning being done. They also pull, at random, other bikes off the end of the line and move them to a separate room for more extensive testing. These bikes are then actually ridden on 15 mile loop around York to make sure all suspension, frame, etc. pieces are up to HD standards. These bikes are then, if they pass, put on the trucks and sent to the dealers for delivery.

The guy that was our tour guide told us that if we ever buy a new bike and it has less than 2 miles on it then something is amiss as that's
about what they put on them on the dyno. So, think about it. The bike comes off the line, gets run thru the gears to the limiter, to 90 mph
and taken off the dyn, all in 2 miles with no pre warm up. He also said that it's entirely possible to get a brand new bike that has as much as 17 miles on it due to the above testing.