08 ROADGLIDE QUESTIONS

[ULTRADOG]

when i start this bike it sounds like the starter is about to jump out of the case also going into gear it bangs hard i was goint to check the primary chain but there is no inspection cover wtf is that all about ? i just bought this bike and havent had time to get a service manual any points i should know before i pull this outer primary cover. i know
                                                                              t.i.a
                                                                                  BILL

[ameagle13]

TT258 â€" August 9, 2006
Primary Drive / Starter Noise Complaints
Several dealers and customers have commented about a “clunking” noise coming from the
primary housing during start up. Most dealers suspect a loose compensator because the
noise seems to come from the front of the housing. Customers tend to associate it with a
starter issue like improper starter drive engagement into the clutch’s ring gear. In fact the
condition they are noticing is what is referred to as “Starter Knock”. This is a normal sound
and condition for all 2007 Twin Cam models.
Changes in the primary drive system increased the diameter and inertial effects of the
rotating components (clutch and sprocket assembly, ring gear, and engine sprocket). Also,
the engine control system is calibrated to start the engine as quickly as possible (short crank
to run times) and to run up to the predetermined engine idle speed as quickly as possible to
provide very positive starting.
Because the engine fires and then runs up to speed very quickly, there is a large torque input
and instantaneous speed differential between the engine and spring loaded compensator
mounted between the engine and the driveline. The compensator is there to dampen the high
torque spikes inherent in a large displacement V-Twin.
Because of the increased inertia in the rotating components in the driveline, their rotational
speed cannot increase as fast as the engine, so the springs in the compensator momentarily
bottom and results in the sound that you hear.
The same sound exists in the 2006 Dyna models, but to a lesser extent. The increase in
displacement to 1584cc increased the torque spike and speed differential in the 2007’s and
causes the sound to be more noticeable.
There is no damage associated with the compensator bottoming.
Identifying characteristics of this condition:
1. It may be intermittent, as it is dependant on the start up conditions and how quickly the
ignition and engine RPM occurs.
2. It will be a single event. Once the starter is disengaged or the compensator is loaded
the sound will stop, unlike a loose sprocket assembly.
3. The condition may be more noticeable on Touring models due to the shorter primary
drive (shaft center to center distance) and associated shorter chain run. The extra
body parts like fairings and saddlebags also tend to reflect powertrain sounds upward,
towards your ears.

Good Luck,
J

[autoworker]

I have an 07 FXD that made the bang when starting.It is gone for the most part since a build and retune.
The primary has been opened up twice and the chain has not been overly tight either time.

Is your clutch adjusted correctly and completely disengaging.The adjustment screw in the center of the clutch greatly determines disengagement.
Also,the Harley Davidson primary/transmission lubricant is pretty thick and could be causing drag in colder weather.If that is contributing to your problem switching to atf should help.

[ULTRADOG]

thanks guys there is alot of info there i had an 01 and none of that noise was present i will check on the clutch adjustment now that i think about it it is hard to push backwards in gear sometimes ya just need someone to point at it and it all becomes clear so why no inspection cover or is it the moco just saved a dollar by leaving it off
thanks again i guess i will just go ride it

[Skin]

with the auto chain adjuster, supposedly there's no reason to be in that particular part of the primary, for maintaince purposes. Hince, no cover.

[FLTRI]

I, and customers have been surprised at how a proper tune will minimize, if not eliminate the starting "clunk, clack, or bang" that comes from the compensator loading and unloading during startup.

[HD/Wrench]

I agree the bang clunk once correctly tune is mostly gone. I just did a 09 that has a almost not noticable clunk, but when it came in you thought something broke everytime you would start it.

[ULTRADOG]

i guess its time to go to the dyno guy and preform some magic thaks again guys appereciate the help and i ordered a manual its time to