Breakin' in a New Bobber
Cruiser
Joined: Oct 2005
Posts: 219
Likes: 0
From:
RE: Breakin' in a New Bobber
what motorman says seems to make sense, but having said that, im a little worried about the consequenses of him being wrong. I think that modern machinery is manufactured to such good tolerances that i wonder if running in is really needed that much. the only thing that may need to bed in are the pistons, all other bearings run on a film of oil, so there is no metal to metal contact. I think that this subject just keeps going round and round, everyone has their own opinion.
Ultimate HDF Member
Joined: Sep 2005
Posts: 5,119
Likes: 2
From: USA
RE: Breakin' in a New Bobber
ORIGINAL: streetbobjim
what motorman says seems to make sense, but having said that, im a little worried about the consequenses of him being wrong. I think that modern machinery is manufactured to such good tolerances that i wonder if running in is really needed that much. the only thing that may need to bed in are the pistons, all other bearings run on a film of oil, so there is no metal to metal contact. I think that this subject just keeps going round and round, everyone has their own opinion.
what motorman says seems to make sense, but having said that, im a little worried about the consequenses of him being wrong. I think that modern machinery is manufactured to such good tolerances that i wonder if running in is really needed that much. the only thing that may need to bed in are the pistons, all other bearings run on a film of oil, so there is no metal to metal contact. I think that this subject just keeps going round and round, everyone has their own opinion.
Ultimate HDF Member
Joined: Sep 2005
Posts: 5,119
Likes: 2
From: USA
RE: Breakin' in a New Bobber
ORIGINAL: streetbobjim
what motorman says seems to make sense, but having said that, im a little worried about the consequenses of him being wrong. I think that modern machinery is manufactured to such good tolerances that i wonder if running in is really needed that much. the only thing that may need to bed in are the pistons, all other bearings run on a film of oil, so there is no metal to metal contact. I think that this subject just keeps going round and round, everyone has their own opinion.
what motorman says seems to make sense, but having said that, im a little worried about the consequenses of him being wrong. I think that modern machinery is manufactured to such good tolerances that i wonder if running in is really needed that much. the only thing that may need to bed in are the pistons, all other bearings run on a film of oil, so there is no metal to metal contact. I think that this subject just keeps going round and round, everyone has their own opinion.
Ultimate HDF Member
Joined: Sep 2005
Posts: 5,119
Likes: 2
From: USA
RE: Breakin' in a New Bobber
ORIGINAL: Gromit
When my DXI was new, I broke it in by the book - it used a fair amount of oil up to the 1st service, and carried on doing so up to 2000 miles when I had the 95 kit installed (new bores/pistons etc). After this, I broke it in as per Motoman's* methods and in the 1500 miles I've done since, the bike's used no oil at all - and it runs much smoother too.
*This is also what the mechs at me dealer say to do. Don't *****-foot around with it - just make sure the motor's warm, find a good long downhill stretch of road, get the motor to 2500rpm or so then, in 3rd gear open the throttle WIDE and accelerate up to at least 5000rpm (no need to rev it much higher) then shut the throttle, letting the bike coast under its own momentum until the rpm's get down to just above idle. Repeat this a few times in 2nd, 3rd & 4th gears.
Having broken engines in both ways over the last 25 years, I'll do the Motoman way every time. It works.
When my DXI was new, I broke it in by the book - it used a fair amount of oil up to the 1st service, and carried on doing so up to 2000 miles when I had the 95 kit installed (new bores/pistons etc). After this, I broke it in as per Motoman's* methods and in the 1500 miles I've done since, the bike's used no oil at all - and it runs much smoother too.
*This is also what the mechs at me dealer say to do. Don't *****-foot around with it - just make sure the motor's warm, find a good long downhill stretch of road, get the motor to 2500rpm or so then, in 3rd gear open the throttle WIDE and accelerate up to at least 5000rpm (no need to rev it much higher) then shut the throttle, letting the bike coast under its own momentum until the rpm's get down to just above idle. Repeat this a few times in 2nd, 3rd & 4th gears.
Having broken engines in both ways over the last 25 years, I'll do the Motoman way every time. It works.
Thread
Thread Starter
Forum
Replies
Last Post
