Rocket '07 transmission

[Ercouper]

The '07 Rocket that I recently acquired has a generally noisy transmission, compared to my '05, and has 2nd gear issues.
I plan to take it apart this winter and replace any needed parts. However, looking around, I noticed this ad on Ebay....... 12 Triumph Rocket III 3 2300 Roadster transmission perfect condition | eBay and was wondering if the transmissions are identical/compatible between my '07 and this '12 (?) Thanks for any info. or advice.

 

[Kevin frazier]

I would take the trans out and send off to Robinson to do there thing, they make circlips bigger, they have a billet 4th gear, they back cut and polish, new shims if needed, and any gears needed Robinson would get, and anything else needed. I would buy new selector forks, change oil gaskets on shifter shaft, red loctite shifter shaft bolt on reassembly. If you gonna do yourself new circlips, whatever gears are messed up, you said 2nd, its sometimes a circlip jumps out and problems, dogs, spacers, and you still wont have a back cut trans and really wont know about 4th which is also a weak link. Just a few things off top my head. Lots of info on site in search box. Knock it out and drive it like you stole it.

 

[atomsplitter]

Unless you're a trans expert I'd go with what Kevin suggested. Have a shop that specializes in transmissions do the work and get a warranty on parts and labor.

 

[Ercouper]

I appreciate both Kevin's & atomsplitter's advice. I'm not a transmission expert but have had various auto and motorcycle motors & transmissions apart and have managed to repair most of them. I would love to be able to afford to send it to Robinson, but unfortunately don't have the needed cash to do that. I will have to do the best I can "on the cheap".
I do plan to replace anything that it obviously worn or broken, and for sure replace the circlips. I've watched all the video's that I can find on the Rocket transmissions and will read all that I can find on this excellent forum. I will report my progress once there is any. Thanks again for your advice.

 

[Tripps]

Be careful til you do it. I also had the 2nd gear issue, turned out the circlip jumped out of the groove, when it went it locked up solid. I went the Robinson route myself

 

[R-III-R Turbo]

The full Robinson works for me earlier this year was $999 delivered back across the pond a few weeks later.
In terms of what you get vs the $380 or so for the standard used trans in the link, it's a no brainer really.
Robinson def the way to go especially if your current trans is not broken just a bit wonky.

 

[Ercouper]

Be careful til you do it. I also had the 2nd gear issue, turned out the circlip jumped out of the groove, when it went it locked up solid. I went the Robinson route myself

About what is the current average cost of a Robinson rebuild? I realize that it depends on what they find and replace.

 

[Tripps]

Idk, I had Carpenter Racing take it out and reinstall it, new output shaft, I forget what all, besides thd aforementioned stuff, almost $4000 if I remember, maybe 3800. Kind of a shock, because I think his estimate was a little over 2000, it was 11 or 12 years zgo.

 

[Ercouper]

Idk, I had Carpenter Racing take it out and reinstall it, new output shaft, I forget what all, besides thd aforementioned stuff, almost $4000 if I remember, maybe 3800. Kind of a shock, because I think his estimate was a little over 2000, it was 11 or 12 years zgo.

Yeoch! That's some serious cash!
I sent them an email yesterday and Bill responded saying..... "The average cost is around $750. It includes an undercut, clip mod for 5th gear and a billet 4th output gear. Other labor or parts if needed would be additional. We will send you a complete estimate for your approval before any work is done. You can send the drum and forks if you would like us to inspect them." This doesn't sound too bad, keeping in mind the "Other labor and parts if needed would be additional". Once I get it apart I will have to decide whether to have them do their magic or do the best I can myself.

 

[Kevin frazier]

Yeah R-111-R said 999 above, complete to his spot. Out of states. Cant do it for cheaper and be as sure as one can be.