Search 650Rider.com and XS650.com using Google!
|
| |
|
|
xs650 > > Frank-in-Bike, Non XS parts that are Interchangeable > > Front / Rear Ends and Shocks > > Radian Arm, rear shock question |
---|
Radian Arm, rear shock question
Go to page Previous 1, 2, 3 |
Author |
Message |
jayel 650Rider Supporter
Joined: Apr 16, 2006 Posts: 3417 Location: SE Iowa 1974 TX650A
|
Posted: November 6, 2008, 6:00 pm Post subject: Re: Radian Arm, rear shock question |
|
32 or 33 will give you a couple hundred rpm drop at speed, you won't notice much differece at all than what you have now as far as acelleration goes, mine with 17/31 runs 65mph @ 4200 about 500 rpm lower than stock, 4200 is right where the carb slides start to lift (better gas milage if you can stay out of the main circuit jets) the thing is these motors are plenty strong so they will pull the higher gearing just fine
_________________ all it takes is time and money -- Where are we going and why are we in this hand basket? |
|
Back to top |
|
|
baniels Full Member
Joined: Oct 12, 2008 Posts: 24 Location: Fairfield, IA - '79 XS650-SF
|
Posted: November 6, 2008, 10:14 pm Post subject: Re: Radian Arm, rear shock question |
|
Sprocket Specialists quoted me sixty something for a 33 or 34 XS500 sprocket, and another ten dollars for their hardening process. Is that a reasonable price?
I'm not quite sure what you meant by a blank sprocket, Jayel. I understand drilling the mounting holes, but I imagine some special machinery would be needed to cut the teeth. Or perhaps you meant with teeth, but with blank mounting area.
|
|
Back to top |
|
|
jayel 650Rider Supporter
Joined: Apr 16, 2006 Posts: 3417 Location: SE Iowa 1974 TX650A
|
Posted: November 6, 2008, 11:20 pm Post subject: Re: Radian Arm, rear shock question |
|
yes the center isn't machined, pretty easy to get it cut out if you know someone with a lathe, which I do, looked at TSC site about sprockets closest they were showing was a 30 (about $20 unhardened) so if you want to stay close to stock gearing, i would go with that 33, you will still need a offset spacer but you need to get some measurment from the wheel first
_________________ all it takes is time and money -- Where are we going and why are we in this hand basket? |
|
Back to top |
|
|
xsjohn Full Member
Joined: Jul 30, 2006 Posts: 5857 Location: North Carolina USSA
|
Posted: November 7, 2008, 12:16 am Post subject: Re: Radian Arm, rear shock question |
|
If I was 175 lbs I would run 18/30.........being 135-140 I run 18/29......and even in town (rural) I use 4th a lot so there is 3 gears below and one above......what a ride on the highway in 5th.......3500 at 65.......
xsjohn
|
|
Back to top |
|
|
baniels Full Member
Joined: Oct 12, 2008 Posts: 24 Location: Fairfield, IA - '79 XS650-SF
|
Posted: November 7, 2008, 10:12 am Post subject: Re: Radian Arm, rear shock question |
|
I've found the threads where people are calculating rpm's at speed/gear combinations, and I've found calculators, but I can't seem to find the gear ratios in our tansmissions. Can someone point me in the right direction?
|
|
Back to top |
|
|
xsjohn Full Member
Joined: Jul 30, 2006 Posts: 5857 Location: North Carolina USSA
|
Posted: November 7, 2008, 10:35 am Post subject: Re: Radian Arm, rear shock question |
|
The problem with these transmissions is that they are close ratio......1-2-3 are high and 4-5 are not high enough.......4-5 are too close to 3 as compared to a wide ratio trans where 4 and 5 are higher......my 360 yamahas are wide ratio's......why they made the 650's thay way is maybe they figured riding double would kill high gears wihich it will....
xsjohn
Last edited by xsjohn on November 7, 2008, 10:36 am; edited 1 time in total |
|
Back to top |
|
|
jayel 650Rider Supporter
Joined: Apr 16, 2006 Posts: 3417 Location: SE Iowa 1974 TX650A
|
Posted: November 7, 2008, 10:36 am Post subject: Re: Radian Arm, rear shock question |
|
1st 2.461:1 (32/13)
2nd 1.588:1 (27/17)
3rd 1.300:1 (26/20)
4th 1.095:1 (23/21)
5th 0.956:1 (22/23)
primary drive ratio 2.666:1 (72/27) (this is the clutch hub and crankshaft pinion gear)
final drive ratio 2.000:1 (34/17) (stock sprockets)
1st gear on the XS1 and XS1B are 2.214:1 (31/14)
_________________ all it takes is time and money -- Where are we going and why are we in this hand basket?
Last edited by jayel on November 7, 2008, 4:47 pm; edited 3 times in total |
|
Back to top |
|
|
xsjohn Full Member
Joined: Jul 30, 2006 Posts: 5857 Location: North Carolina USSA
|
Posted: November 7, 2008, 10:40 am Post subject: Re: Radian Arm, rear shock question |
|
4th 1.095:1 (22/23)
5th 0.956:1 (22/23)
Is something wrong there..?......both 22/23
xsjohn
|
|
Back to top |
|
|
jayel 650Rider Supporter
Joined: Apr 16, 2006 Posts: 3417 Location: SE Iowa 1974 TX650A
|
Posted: November 7, 2008, 10:56 am Post subject: Re: Radian Arm, rear shock question |
|
yep 4th should have been 23/21 fixed it
_________________ all it takes is time and money -- Where are we going and why are we in this hand basket? |
|
Back to top |
|
|
Retiredgentleman 650Rider Supporter
Joined: Mar 03, 2007 Posts: 2258 Location: Calgary, Alberta 1978 XS650 SE
|
Posted: November 7, 2008, 1:25 pm Post subject: Re: Radian Arm, rear shock question |
|
Another correction; I believe 2 nd gear should be 27/17.
|
|
Back to top |
|
|
jayel 650Rider Supporter
Joined: Apr 16, 2006 Posts: 3417 Location: SE Iowa 1974 TX650A
|
Posted: November 7, 2008, 4:49 pm Post subject: Re: Radian Arm, rear shock question |
|
ok ok both of you guys had better get jobs as proof readers! lol ok should be good now
_________________ all it takes is time and money -- Where are we going and why are we in this hand basket? |
|
Back to top |
|
|
|
|
You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum You cannot attach files in this forum You can download files in this forum
|
|
|
|
|
Check out the new Honda CB750 Forum at CB750.com! A site dedicated to the great Honda SOHC and DOHC CB750.
Check out the new Yamaha XS400 Forum at XS400.com!
Yamaha xs650
xs650, xs, 650, forum, links, chopper, custom, yamaha, parts, forum, info,
information, bb, bulletin board, XS650 650Rider, Free Unrestricted xs650
forum, Personal photo albums, Post images in Forum, News columns, Daily blog,
Links, Event calendar, Information for Yamaha XS650
Interactive software released under GNU GPL,
Code Credits,
Privacy Policy
|