Primary chain jerking
Club Member
Joined: Feb 2007
Posts: 16,320
Likes: 306
From: Boynton Beach, FloriDuh
There was also nothing abnormal on the drain plug magnet, as the broken pieces fell to the bottom of the tranny, not the primary.
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,309
Likes: 6,328
From: Honah Lee
No, this didn't "go bump before it goes", and it produced nothing in the way of any kind of abnormal noise. I know, that's my pic, of my 4th gear after the gear dogs broke off. There was no hint of a problem until I shifted to 4th gear and it was just gone.
There was also nothing abnormal on the drain plug magnet, as the broken pieces fell to the bottom of the tranny, not the primary.
There was also nothing abnormal on the drain plug magnet, as the broken pieces fell to the bottom of the tranny, not the primary.
Last edited by Jackie Paper; Jun 24, 2014 at 06:47 AM.
No, this didn't "go bump before it goes", and it produced nothing in the way of any kind of abnormal noise. I know, that's my pic, of my 4th gear after the gear dogs broke off. There was no hint of a problem until I shifted to 4th gear and it was just gone.
There was also nothing abnormal on the drain plug magnet, as the broken pieces fell to the bottom of the tranny, not the primary.
Club Member
Joined: Feb 2007
Posts: 16,320
Likes: 306
From: Boynton Beach, FloriDuh
That is you 4th gear..and thanks..that send a lot of shock and aww message? HA.. . Figured if you got down to 1 drive dog, it might do what Iarecobra described since the primary chain in a Sporty is so easy to set. Also note in my post, I referred transmission to check for chips. Is their not a separate engine/transmission, primary drain with magnets on a Sporty? I also tagged my Forum source folder for reference to owner source. On a side note, do you have a picture of the shift fork on a Sporty? Do they have a wear coating on the fork or just hardened steel?
Sorry, no pictures of the forks and I don't recall about the coating.
Club Member
Joined: Feb 2007
Posts: 16,320
Likes: 306
From: Boynton Beach, FloriDuh
This happened last year (April 2013) at 92,000 miles when I was in NC. I rode the bike home (800 miles) without 4th gear, praying whatever parts broke stayed in the bottom of the case.
On the 2004 and later rubbermount Sportys, a tranny repair means pulling the motor and splitting the cases. A total motor tear-down. Since the bike had 92,000 miles on it, I figured that as long as it was getting disassembled, it might as well go back together with new (go fast) jugs, pistons, headwork and cams.
How much it costs for just the repair depends on whether you have the ability and tools to do it yourself or have to have it done by someone else. I would "guess" probably in the $2500 - $3000 range for just the repair, if you took it to a dealer.
On the 2004 and later rubbermount Sportys, a tranny repair means pulling the motor and splitting the cases. A total motor tear-down. Since the bike had 92,000 miles on it, I figured that as long as it was getting disassembled, it might as well go back together with new (go fast) jugs, pistons, headwork and cams.
How much it costs for just the repair depends on whether you have the ability and tools to do it yourself or have to have it done by someone else. I would "guess" probably in the $2500 - $3000 range for just the repair, if you took it to a dealer.
This happened last year (April 2013) at 92,000 miles when I was in NC. I rode the bike home (800 miles) without 4th gear, praying whatever parts broke stayed in the bottom of the case.
On the 2004 and later rubbermount Sportys, a tranny repair means pulling the motor and splitting the cases. A total motor tear-down. Since the bike had 92,000 miles on it, I figured that as long as it was getting disassembled, it might as well go back together with new (go fast) jugs, pistons, headwork and cams.
How much it costs for just the repair depends on whether you have the ability and tools to do it yourself or have to have it done by someone else. I would "guess" probably in the $2500 - $3000 range for just the repair, if you took it to a dealer.
Club Member
Joined: Feb 2007
Posts: 16,320
Likes: 306
From: Boynton Beach, FloriDuh
As far as ball-parking the cost for the gear repair alone, that's the $2500 - $3000 guesstimate I gave you above for a dealer repair. With most dealers close to $100/hr that's 3 days labor +parts, assuming nothing else needs replacing. Again, I'm just guessing, you could always call your local dealer and ask for the flat (book) rate to R&R a tranny gear.
I was fortunate to know an indy that didn't mind letting do some of the work in his shop, and he had the necessary specialty tools and experience I didn't. I was able to save a some bucks by doing what I felt comfortable with myself, and still have confidence during reassembly in the outcome of my $$$ investment.
.
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Nope, I didn't document the project and can't really account for all the hours as the project spread over 6 weeks. (Including turnaround time shipping parts to Hammer) All bearings in the motor & tranny were replaced, along with the broken gear and 1 shift fork that showed some signs of wear. The rest of the parts in the tranny and lower end of the motor still looked/spec'd real good and were reused. And since the motor was out, it was the perfect time to replace motor-mounts and swingarm bushings.
As far as ball-parking the cost for the gear repair alone, that's the $2500 - $3000 guesstimate I gave you above for a dealer repair. With most dealers close to $100/hr that's 3 days labor +parts, assuming nothing else needs replacing. Again, I'm just guessing, you could always call your local dealer and ask for the flat (book) rate to R&R a tranny gear.
I was fortunate to know an indy that didn't mind letting do some of the work in his shop, and he had the necessary specialty tools and experience I didn't. I was able to save a some bucks by doing what I felt comfortable with myself, and still have confidence during reassembly in the outcome of my $$$ investment.
.
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Road Master
Joined: Apr 2014
Posts: 841
Likes: 58
From: Yakima
Back to my original post.....checked the chain adjustment. Seems to be in specs. But if I don't "baby it" there is a bump when I take off or if I suddley close the throttle.
Any ideas. ??
Any ideas. ??
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