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Fork Question
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Aussie650 Full Member
Joined: Apr 19, 2009 Posts: 62 Location: Gold Coast, Australia
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Posted: May 11, 2009, 11:29 am Post subject: Fork Question |
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First. sorry if this is the wrong section but think its right.
So, i changed the Fork oil on my 81 650 special. From all research there should have been removable caps to pour the oil into on the top? I had taken the forks out to clean them up. After draining them I ended up having to undo the 8mm nut on the bottom, tight sucker, and filling upside down? The top of the forks have a plastic cap and under them seem to be sealed? Anyone know what the go is? Cheers, Pete.
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Retiredgentleman 650Rider Supporter
Joined: Mar 03, 2007 Posts: 2258 Location: Calgary, Alberta 1978 XS650 SE
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Posted: May 11, 2009, 12:27 pm Post subject: Re: Fork Question |
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www.biker.net/81_650h_...0main.html
Click on "Forks" in the link. Item 24 is a bolt that unscrews. There is also a 3 position spring tension adjuster within the bolt. Its best to first relieve the tension by turning counter clockwise with a large flat blade screw driver. Be careful as the bolt is still under tension.
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Aussie650 Full Member
Joined: Apr 19, 2009 Posts: 62 Location: Gold Coast, Australia
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Posted: May 11, 2009, 12:39 pm Post subject: Re: Fork Question |
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Hi Retiredgentleman, thanks for the response. I had seen that diagram previously. Unfortunately under the rubber cap there is a flat sealed cavity. No bolt or nut? ill take a pic of it when I get home in a few hours and post it? Thanks again.
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jayel 650Rider Supporter
Joined: Apr 16, 2006 Posts: 3417 Location: SE Iowa 1974 TX650A
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Posted: May 11, 2009, 1:11 pm Post subject: Re: Fork Question |
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here's another look.....
_________________ all it takes is time and money -- Where are we going and why are we in this hand basket? |
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Aussie650 Full Member
Joined: Apr 19, 2009 Posts: 62 Location: Gold Coast, Australia
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Posted: May 12, 2009, 2:43 am Post subject: Re: Fork Question |
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ok so hopefully there should be a pic? As you can see there's no nut in the top?
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650skull Support Staff
Joined: Jul 19, 2007 Posts: 1186
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Posted: May 12, 2009, 4:46 am Post subject: Re: Fork Question |
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Got me beat, never seen them like that before..........................???
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Retiredgentleman 650Rider Supporter
Joined: Mar 03, 2007 Posts: 2258 Location: Calgary, Alberta 1978 XS650 SE
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Posted: May 12, 2009, 12:11 pm Post subject: Re: Fork Question |
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skull is right, those are not stock forks. I see no way to change the fork spring or add oil etc. You're on your own on that set-up.
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yamaman Support Staff
Joined: Jan 04, 2007 Posts: 1638 Location: Perth Western Australia
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Posted: May 12, 2009, 12:23 pm Post subject: Re: Fork Question |
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Mmmmm looks pretty fishy! The top of the tube, on the inside, should be threaded to recieve the cap, yours don't even seem to be threaded?
Thay also seem to be a long way up through the triple clamps, can you give us a pic of the whole front end.
I'm guessing that (if they are XS forks) someone has shortened them for some reason and somehow made their own caps.
There's not a circlip or a groove where there was one once is there? That plug has to come out somehow............ Good luck with it & keep us posted, can't wait to find out the answer! Cheers
_________________ Its not enough to have an aim in life, you have to pull the trigger! |
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Aussie650 Full Member
Joined: Apr 19, 2009 Posts: 62 Location: Gold Coast, Australia
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Posted: May 12, 2009, 12:35 pm Post subject: Re: Fork Question |
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Dang, The outer tube is obviously stock as it has all the right mounting holes along with the drain plug. It was an effort I must say. To take off the 8 mm nut at the bottom I had to compress the fork and muscle up. Still came off then just poured the oil in that way? No idea whats going on with it?
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yamaman Support Staff
Joined: Jan 04, 2007 Posts: 1638 Location: Perth Western Australia
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Posted: May 12, 2009, 12:36 pm Post subject: Re: Fork Question |
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I just had a look at your other thread, those staunchions look like they might be longer than standard????? The bottoms seem to be XS.....
Chech the staunchions for a join, maybe some crazy barstard made an extension that screws into the standard tubes?
_________________ Its not enough to have an aim in life, you have to pull the trigger! |
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Aussie650 Full Member
Joined: Apr 19, 2009 Posts: 62 Location: Gold Coast, Australia
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Posted: May 12, 2009, 12:49 pm Post subject: Re: Fork Question |
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Will do, heres a couple of closer pics? Theres def no thread in the top but it kinda looks like there might be a circlip or slight gaps in around the edge of the sealed section? oh and when I had them off there was def no join? Maybe some after market mod? Ill have to pull them off again and check, spring length and take lots of pics.
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yamaman Support Staff
Joined: Jan 04, 2007 Posts: 1638 Location: Perth Western Australia
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Posted: May 12, 2009, 1:11 pm Post subject: Re: Fork Question |
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I'd spray the hell out of it with CRC and clean it up in there as much as you can & have another look. It looks to me as though theres a circlip of some sort there.
After you've done that:
With the front wheel just on the ground (so there's minimal/no weight on the springs) see if you can push the cap down somehow (you'll be pushing against the spring if this GUESS is right)!
_________________ Its not enough to have an aim in life, you have to pull the trigger! |
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Aussie650 Full Member
Joined: Apr 19, 2009 Posts: 62 Location: Gold Coast, Australia
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Posted: August 27, 2009, 10:02 am Post subject: Re: Fork Question |
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Can someone measure the stock length of a Fork tube so I can compare it to mine? Im going to take them back out in a few days for another crack. 81 Special. Cheers. Pete.
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pumps 650Rider Supporter
Joined: May 29, 2007 Posts: 1993 Location: Kansas City, Missouri, U.S.A.- 1977 XS650 "D" Standard
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Posted: August 27, 2009, 3:10 pm Post subject: Re: Fork Question |
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I have my tubes out and could measure if the tubes on a 77 Standard are the same.
_________________ You don't HAVE to be crazy to run into burning buildings, but it HELPS!
On an XS you won't pass yourself on the road everyday.
My Bikes |
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Aussie650 Full Member
Joined: Apr 19, 2009 Posts: 62 Location: Gold Coast, Australia
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Posted: August 28, 2009, 2:23 am Post subject: Re: Fork Question |
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According to Mikesxs 77 to 84 had the same forks so if you could I would really appreciate it. Thanks!
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pumps 650Rider Supporter
Joined: May 29, 2007 Posts: 1993 Location: Kansas City, Missouri, U.S.A.- 1977 XS650 "D" Standard
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Posted: August 28, 2009, 5:07 am Post subject: Re: Fork Question |
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This whole length correct?
_________________ You don't HAVE to be crazy to run into burning buildings, but it HELPS!
On an XS you won't pass yourself on the road everyday.
My Bikes |
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5twins Full Member
Joined: Aug 05, 2006 Posts: 1616
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Posted: August 28, 2009, 10:00 am Post subject: Re: Fork Question |
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deleted
Last edited by 5twins on September 13, 2009, 2:12 pm; edited 1 time in total |
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Aussie650 Full Member
Joined: Apr 19, 2009 Posts: 62 Location: Gold Coast, Australia
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Posted: August 29, 2009, 1:28 pm Post subject: Re: Fork Question |
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Pumps - Was chasing the length of just the Top tube, but thanks!
5twins - Ill have a crack at your method. Just hope I dont end up wearing a plug in the face
Appreciate the help again guys.
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xsleo Full Member
Joined: Oct 28, 2007 Posts: 1528 Location: Earlville NY
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Posted: August 29, 2009, 6:24 pm Post subject: Re: Fork Question |
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It may be easier to get some one to press down on the plug while you remove the clip. Same with the install.
_________________ "You live more in five minutes on a bike than most people do in there whole life"
'75 XS650B with a 79 dual disc front end, rear disk brake, Chrysler reg, Radio Shack rect, LED tail/ brake and turn signals. |
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Aussie650 Full Member
Joined: Apr 19, 2009 Posts: 62 Location: Gold Coast, Australia
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Posted: September 9, 2009, 7:15 pm Post subject: Re: Fork Question |
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Update time. Success! I pulled the forks again, drained the oil, unscrew the allen head bolt on the bottom and pulled the two sections apart. Now that there was no presure on the top plug I was able to push it down a few mm and bingo! there was a circlip. Removed the circlip and out came the top cap, a metal cylinder, spring and the other part that i have no idea what its called? I have laid it it out in order from top to bottom so you can all see. I now have three Q's.
1. What are they off? 5twins, do you still thing maybe 500 or 400?
2. How much oil do they take? should I stick with the standard amount?
3. Dont flame me bout this one, they are longer then stock, If I wanted to shorten them slighty, could i cut the metal cylinder above the spring? Im only talking 1/2".
Thanks again.
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gordo 650Rider Supporter
Joined: Oct 09, 2008 Posts: 559 Location: CT.U.S.A.
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Posted: September 9, 2009, 9:45 pm Post subject: Re: Fork Question |
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Aussie, if it were me, I'd chuck the top tube's & get what I needed from Mike's, emulator's, spring's, tube's, seal's, & either gaiter's or the rubber cap's. 'Cause if you plan on keeping her for a few year's, you would probably want to change the fork oil once a year. Oh ya, forgot to say the cap's with the real fine thread!!!
_________________ '80 G, |
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xsleo Full Member
Joined: Oct 28, 2007 Posts: 1528 Location: Earlville NY
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Posted: September 10, 2009, 1:53 am Post subject: Re: Fork Question |
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If your fork tubes are 35 mm, I might just replace the whole forks. There are usually a few sets on ebay. That way you would know for sure just what you do have.
_________________ "You live more in five minutes on a bike than most people do in there whole life"
'75 XS650B with a 79 dual disc front end, rear disk brake, Chrysler reg, Radio Shack rect, LED tail/ brake and turn signals. |
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Aussie650 Full Member
Joined: Apr 19, 2009 Posts: 62 Location: Gold Coast, Australia
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Posted: September 10, 2009, 2:53 am Post subject: Re: Fork Question |
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Thanks guys, thought about just picking up a set off ebay, but they dont cmoe up as often as they do here in Aus. Shipping from US isn't pretty. Im happy to clean these up and run them, just love to know what they are. Ill def keep my eye out for a set here in Aus in the mean time. Now that i know how to remove the top cap, it should be alot easier to change the oil.
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nj1639 Full Member
Joined: Aug 22, 2007 Posts: 839 Location: Switzerland County, Indiana
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Posted: September 10, 2009, 7:15 am Post subject: Re: Fork Question |
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When those forks are together and on the bike what is the overall length, say, from top to the middle of the axle?
_________________ "Go ahead, turn the damn power and water off, I'm ready!
'83 xs650sk
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