If you have gone to the trouble of splitting the cases and changing one, you may as well do both. It's also worth looking out for good used gear sets on the e bay sites, some go for peanuts in the states but they do come up in Europe also.
jibber wrote: Thu Jan 03, 2019 4:04 pm
If you have gone to the trouble of splitting the cases and changing one, you may as well do both. It's also worth looking out for good used gear sets on the e bay sites, some go for peanuts in the states but they do come up in Europe also.
I know, but it's €95....
I mean I would do it if I would go around the world with it.. but I don't know how I will use it. The bike has never run. I'm basically restoring it as a hobby.
I think that the trouble with this is that the little chips that came off had to go somewhere. If your lucky they went straight to the bottom and caused no issues. More likely they will have hopped around a bit and if they found their way in between the teeth of two gears they will have either damaged the hardened surface of those gears or the bearing that carries the gearshaft. Or at least thats my logic taking the fact that these parts are not flexible so cannot easily accomodate the extra part introduced between them. I might be wrong though and for all I know there may be some degree of flexibility there. If you are selling the bike on I'm sure any prospective owner will happily pay the extra €95 if they hear how diligent you were in ensuring the gears were put back together in best state of health possible. It might be worth rubbing dye on the other gears to see if there is cracking starting.
BMurr wrote: Thu Jan 03, 2019 6:48 pm
I think that the trouble with this is that the little chips that came off had to go somewhere. If your lucky they went straight to the bottom and caused no issues. More likely they will have hopped around a bit and if they found their way in between the teeth of two gears they will have either damaged the hardened surface of those gears or the bearing that carries the gearshaft. Or at least thats my logic taking the fact that these parts are not flexible so cannot easily accomodate the extra part introduced between them. I might be wrong though and for all I know there may be some degree of flexibility there. If you are selling the bike on I'm sure any prospective owner will happily pay the extra €95 if they hear how diligent you were in ensuring the gears were put back together in best state of health possible. It might be worth rubbing dye on the other gears to see if there is cracking starting.
Right. I'm also replacing the bearings.
It's just hard, I mean for all I know, the 5th gear on the output side will chip off 100km after I replace the input side.
Or maybe it's 3rd gear that will be exactly like 4th gear is now.. So where do you stop? Where to draw the line.. Is 2 out of 22 teeth really worth 95euro..
I'm in a similar boat mate.
I bought a 3aj and it saw very little use until a large crash turned it into a long-term project bike.
I'm splitting the cases and doing a ground-up rebuild. New bearings, seals, crank service and I will also be replacing my 5th gear as it looked pretty rough.
When I am in doubt about sending the money, I weigh it up against the effort. I assume the best case scenario that I will be doing a lot of travel on the bike.
If something is going to cost a bit to replace, but might not necessarily NEED replacing, I think forward to the future at how much I will be hating myself if I do need to swap it out. With this thought process, I am making sure anything in the bottom end that looks even slightly like it will be trouble within 100,000 kilometres I replace it. Because after splitting the cases and tearing it apart into it's individual components there is no way in hell I want to do it again any time soon.
However when it comes to parts closer to the surface if you will, I am a little more lenient with these because if they do end up needed replacing it won't be a big job.
In short, if I were you I would replace the 4th gear as well. And also make sure you have a really good look to make sure that there are no bits of either gear still floating around in the cases.
If it doesn't involve scotch, bikes or progressive metal then you're doing something wrong.
'09 570 EXC.
'88 600 Tenere project.
R.A.G Endurance Racing.
Patrick wrote: Fri Jan 04, 2019 5:04 am
I'm in a similar boat mate.
I bought a 3aj and it saw very little use until a large crash turned it into a long-term project bike.
I'm splitting the cases and doing a ground-up rebuild. New bearings, seals, crank service and I will also be replacing my 5th gear as it looked pretty rough.
When I am in doubt about sending the money, I weigh it up against the effort. I assume the best case scenario that I will be doing a lot of travel on the bike.
If something is going to cost a bit to replace, but might not necessarily NEED replacing, I think forward to the future at how much I will be hating myself if I do need to swap it out. With this thought process, I am making sure anything in the bottom end that looks even slightly like it will be trouble within 100,000 kilometres I replace it. Because after splitting the cases and tearing it apart into it's individual components there is no way in hell I want to do it again any time soon.
However when it comes to parts closer to the surface if you will, I am a little more lenient with these because if they do end up needed replacing it won't be a big job.
In short, if I were you I would replace the 4th gear as well. And also make sure you have a really good look to make sure that there are no bits of either gear still floating around in the cases.
Thanks. Rationally it makes sense to do it.
It's just extra hard because i've never seen this bike running, let alone ridden it, and it's not like the rest of the bike looks OK (dents, scratches etc.)
What Bike or Bikes Do You Own?: 1986 XT600 - project 1980 DT250 - restored previous project 2001 ZX9r - runaround bike zzr600 - next custom project Triton - future project
I've decided to also order the 4th gear, but not the opposing 4th and 5th gear on the output side.
They look 100% new, so I'm willing to take that risk. Another €180 is simply too much.
I'll see if I can update this topic with some progress :)
