My Bro has been complaining of a clattering and knocking on the engine since day one on his 08 EG Classic. He has 5k on the bike now. He pulled up at the light next to me and I heard like a spark Knock sound on his bike. It sounded like it was going to die. I asked him WTF was wrong with his bike? He said that is the sound I was talking about.

He bought his in Rocklin CA, when he told his dealer about it they said that was normal. I heard it and said normal my ***. I took the bike to the Reno HD and got the service manager to test drive the bike and as soon as he gave it enough gas to lurch forward he heard it. He thought it was in the primary and after he inspected that and found nothing wrong he went to the rear sprocket and pulled it and said that some of the rubbers had collasped.

They are ordering him the sprocket and IDS, I believe he said they were one unit.

So we will see if that gets it.
What is weird is hearing it at idle, I thought rear sprocket at idle the wheel is not moving but I guess with the HD bouncing up and down and the rubbers collasped it was metal hitting metal.

 

That's a first for the 08 that I've heard of. My dealers says they've seen no problems at all on the factory installed units. That should fix it. Love mine.

 

I thought these things were solid rubber. I'd be interested in knowing more about how the rubbers collasped. Maybe the strap that holds the two sides of the rubber together failed andthey moved in the bowl. Sure would like to know more about the failure.

 

COULD THE RUBBER BE INSTALLED BACKWORDS?

 

Will Let you know when they fix it.

 

Very odd. Being solid rubbers I can't see how they would collapse, but I suppose could crack or break after years of use. I just removed my rear wheel with IDS installed to replace the tire and after 6k miles since installing the IDS the rubber bumpers looked like new. I just sprayed some Armor-All on them and put them back in. I was especially interested in checking the bearing, as some have had them fail, but mine was fine.

If it was my bike I would want to know exactly what the problem was. I don't know how you could put them in wrong unless you pulled the sprocket off while installing the wheel and the rubbers became misaligned or came out of their sockets. I would insist they do the work in warranty.

 

Forum Abbreviations, I've only been on this forum for 6 months and have been able to figure out most of the abbreviations but "IDS" has me f***ed up. What is it? Closest I came to is internal drive system, but that I doubt.
We should post a list of abbreviation in the New Member area, would really help.

 

Isolated Drive System

 

Isolated Drive System: http://*******.com/2gqmol

Your bike has it installed from the factory. It also fits 2007 FLH's, available as a kit. It consists of a hub (bolted to the wheel), six rubber bumpers, and a floating sprocket riding on a bearing attached to the axle. It isn't a new invention. The V-Rod has its own variant, as do many metric bikes, and was invented by Royal Enfield in 1912. It smooths the power strokes and in the case of 96" HD drivetrains eliminates inherent clatter that offended many owners, including me.

 

RoadKing_Al: Isolated Drive System. "Introduced on the '08 Touring models, the Isolated Drive Systeme improves rider comfort and ride quality by dampening the mechanical noise and vibration caused by the engine's torque pulses. The rubber compensation elements in the sprocket act like a cushion, absrobing the power pulses from theengine. With the IDS installed, the motorcycle feels more refined, an is quieter while accelerating, shifting and cruising."Song and verse from the Harley Davidson Accessories Catalog.