Fifth gear mod

[xschop]

group buy

I'm in. I would be able to drag the bike at the stop lights and cruise the Hiway at low Rpm's....Best of both worlds

[DavesXS]

The guy said just 1 pair will probably be expensive.
But if we can get 10 people together it might get the price down enough. He prefers that we send him the extra gear box for proper fitments. And can get the box back when finished.
Actually we could just send the gear box and the gears in it he'll use for the model. He said he'll have to fab the entire gears, so we don't need to go out and buy 10 pairs for them to work on. They just need 1 pair to go by.

I sent him some pics of a gear so he can see size and shape to give an estimate.

We need to start a list.
Copy list and add your name.

1.DavesXS
2.XSChop
3.

edit: Wow this guy is quick to return e-mail. I'm calling him tomorrow to discuss.

[3Phase]

Originally posted by DavesXS
I sent him some pics of a gear so he can see size and shape to give an estimate.

We need to start a list.
Copy list and add your name.

1.DavesXS
2.XSChop
3.3Phase

I'll probably need to do the second gear fix eventually. If you can get the gears made, should I just buy a new second gear with the angles already fixed from Yamaha to use with that new fifth gear set?

Regards,

Scott

[DavesXS]

Originally posted by 3Phase


We need to start a list.
Copy list and add your name.

1.DavesXS
2.XSChop
3.3Phase

I'll probably need to do the second gear fix eventually. If you can get the gears made, should I just buy a new second gear with the angles already fixed from Yamaha to use with that new fifth gear set?

Regards,

Scott

Correct. The gears I got from yamaha had no angels. They were just like the originals. I had to grind angels on the new ones.
We can specify an angle for the dogs on the new fifth.

[3Phase]

Originally posted by DavesXS


The gears I got from yamaha had no angels. They were just like the originals. I had to grind angels on the new ones.

That is not good news, Dave.

From what I read here Yamaha was supposed to have fixed their new gears. I was going to buy new ones while they're still available before my gears start to do the Watusi.

If new spendy Yamaha gears still require re-cutting to make them work properly I'll have my second gear machined to fit whatever angle is on the modified fifth gear..

Hmm.... <tapping teef>


Regards,

Scott

[JRocket]

This sounds like a great project to do, perfect, and mass produce for many more of us XSers. I know that my first impression of the XS, back in 1979, was that it needs another gear. Something like the Harleys, with all their vibration. Now, you can get 6-speeds standard.

Once one of you machinists gets all the parts working smoothly, with the right tolerances, and make parts swappable, you could sell the kits for a decent profit. I know that I would certainly like one, but I don't want to experiment on my perfectly running XS, or tie it up for months, assembling, disassembling, reassembling, etc.

Is there an easy fix, like a final drive ratio change, that could eliminate much of the work? I know, a huge rear tire would work, but that's not practical.

[JRocket]

The list:

We need to start a list.
Copy list and add your name.

1.DavesXS
2.XSChop
3.3Phase
4.JRocket

[HobbyMan]

Like how much $$are we talking here?
I would like to but I don't even know a ballpark figure.

[DavesXS]

Originally posted by HobbyMan
Like how much $$are we talking here?
I would like to but I don't even know a ballpark figure.

I should have a figure tomorrow. It won't happen if not affordable. Thats why we need 10 people. There will be no down time except your own when installing your new gears, No experimenting on our bikes, There is a spare gear box avalible and the gear fabricators will have it to test fitments and function.
I imagine if we had 20 peeps it'd be even cheaper than 10.

Were just getting names of interested people. We'll figure out the details once a doable price has been established.

[DavesXS]

Originally posted by JRocket


Is there an easy fix, like a final drive ratio change, that could eliminate much of the work? I know, a huge rear tire would work, but that's not practical.

You can do a 750 fd, I'm looking at the gear mod as in place of fd mod. This way we keep the 1-4 gearing for round town speed, and a highway 5th gear. The FD mod effects all the gears. But you could get even lower rpms with the 5th gear mod and fd mod.

[HobbyMan]

Put the ole Hobbs on there to

We need to start a list.
Copy list and add your name.

1.DavesXS
2.XSChop
3.3Phase
4.JRocket
5.HobbyMan

[3Phase]

I hope it's not too much as I've been told not to spend any more money on this bike -- or else.

I don't want to push the 'or else' boundary.


Regards,

Scott

[Brasco18]

I am a poor man so I will wait until I learn this is even feasible. It sounds like a good idea, though.

[snowdog51]

fith gear

1.DavesXS
2.XSChop
3.3Phase
4.JRocket
5.HobbyMan
6 bill snowdog

yeah it's the only ting thats left to do
all my life been a mech making mods on cars trucks and bikes never having many
others to talk with it's so great being with youall
bill

ps have 86 astro van camaro motor t5 tran 400 posi rear burns the tires right off the rims

[trbig]

ps have 86 astro van camaro motor t5 tran 400 posi rear burns the tires right off the rims

Yeah but... you realize it's still a minivan right?? lol. I remember back home when I was young, one of the fastest cars I'd ever rode in was a Ford Pinto that the guy had built a h#@$ of a motor for and done a bunch of work to. And I was like.. Dude, it's still a Pinto!? lol..




Tod