R80ST gets the GS Treatment

Discussion in 'Airheads' started by Airhead Wrangler, Dec 24, 2008.

  1. Airhead Wrangler

    Airhead Wrangler Long timer

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    Shoving off mid-september or october 1st at the latest, so plenty of time. I was just hoping that the tranny was going to be a grand that I didn't have to spend now. Damn it. The trip budget may have just gotten a little tighter. I'm going on a 800-1000 mile ride next weekend and after that I might drop my tranny oil again and look for any more evil. Problem is, what are the chances that those little shards even make their way to the magnet? For all I know, these little pieces could've been living in the bottom of the box for a while and only recently migrated close enough to the magnet to get picked up. Maybe I'll get one of those little magnets on a flexy wire, snake it in the drain hole and do some sweeping and see what I find.

    Anyway, my feeling on the matter right now is just ride it and pay close attention to it - Feel for the first signs of any bad vibes, put it up on the center stand and turn the wheel often, change my tranny oil every time I change my engine oil and watch for any more chunks. After a few months of that I'll make my decision on whether or not to get it rebuilt. Anyway, what's the lead time to get a box built from any of the big names? (Anton, Oak, Ted Porter, etc.) They can turn them around in a few weeks right?

    Do you know how to rebuild airhead transmissions?? :D :D Thanks, Ernie. Keep coming up with new goodies for our old bikes! American cottage industry at its finest.
    Shameless plug for Ernie's wares: http://twinheadlighternie.smugmug.com/gallery/3463421_6XsAt#510440858_FFNER
  2. Stagehand

    Stagehand Imperfectionist

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    depends on the time of year. getting to be busy season, but yeah, couple of weeks is usually a good budget number.
  3. bgoodsoil

    bgoodsoil Dare to be Stupid

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    This is a gearbox emergency. Hold a micrometer in front of a flashlight and shine it up at the sky--it's the Anton bat-signal. :D

    does 2HE's bashplate mount to the frame?
  4. hardwaregrrl

    hardwaregrrl ignore list

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    Listen, 'wrangler. Had a weird vibration coming from the rear for a few weeks. I had been having problems with my FD leaking all over my shoes. Turned out that the orings on the brake arm were the wrong size, but the vibration was still there. It was my tranny. 700 and something, something later, it was fixed. I would hate to think of you stuck somewhere south with a f'up tranny. If you want to save the dough, buy a used one ready to ship. If you want piece of mind, rebuild it.
  5. Solo Lobo

    Solo Lobo airhead or nothing

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    I fished out similar shavings with a telescoping magnet while mine was still shifting and running well. I had three bad gears and bad bearings..... other than a slight while all seemed fine. I can show you the bag of gears and bearings that are crap...


    +1 on tackling the trany now. It's almost high season and you will wait months then... heck Ted had me waiting for more than a month in the off season.

    I do know a local cash-only former super-head tech BMW guy that knows his stuff and is very, very good.... 2Trac is having his trans done buy this guy right now. I would have picked him over Ted if I had had cahs...
  6. hardwaregrrl

    hardwaregrrl ignore list

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  7. Readymeal

    Readymeal Been here awhile

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    nope to the oil pan like the original one
  8. AntonLargiader

    AntonLargiader Long timer

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    If the oil looked OK otherwise, I'd say the latter. When shift dogs have a rough encounter, you lose a little wire of metal from the edge. They are very distinctive. When the box is eventually opened, you'll see where they came from (and they can't be put back, so don't do that!).

    If the tranny is from the circlip days (which I suspect it is) and the output shaft spins smoothly, I'd just go ahead and run it for a bit with some clean oil and then have another look. It is probably worth pulling the driveshaft off and feeling the flange directly, though. Just pull the swingarm back an inch to give yourself some room.

    If the gearbox runs too hot to touch, just get it off your mind and have it checked out. If it's too hot to keep your hand on but OK for a second or two, that's pretty normal.

    Lead times can really be anything, but if you make a firm appointment for the work (most guys will probably work with you on this) so that you're not jumping in front of an existing backlog, it's just a one-day job unless unusual parts need to be ordered.
  9. hardwaregrrl

    hardwaregrrl ignore list

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    Hey, 'wrangler. if you're worried about down time for the ST, I have a spare I can loan you if you need to as you send the other out. I know I'm not next door, but, shouldn't be too much to ship. let me know.
  10. Readymeal

    Readymeal Been here awhile

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    i think you are worrying too much Airhead Wanker, just ride the thing to South America, if the tranny ever brakes down it s going to be an excellent story/shot for the movie furthermore you can always finish the trip on a local XR200 with the PD tank strapped on it:rofl
  11. bigdog99

    bigdog99 CJ's bitch

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    The speedo on my 89 was always about 10% optimistic. The speedo failed at about 90k, and I had it rebuilt at Palo Alto Speedo. They did a great job (~$150 as I recall) and mentioned that they had recalibrated it with the rebuild. It was spot-on after that.

    Unfortunately, I lost the entire front-end into the side of a deer at about 105k and had to buy a brand-new speedo. Yep, about 10% fast again.

    Had my tranny rebuilt at Ozzie's BMW Center in Chico, CA at about 100k. That tarnny now has about 40k and is still smooth and quiet. Never any metal on the plug. Not sure what their lead times are right now though.

    I think if I had a pristine R80ST and wanted a GS, I would sell the ST, as they still bring fairly decent prices, and buy a GS.

    I was wondering why you think the HT panniers are better than the Jesses you originally had??
  12. Airhead Wrangler

    Airhead Wrangler Long timer

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    Thanks all for the help.

    Anton-
    Good to know about those little slivers. I think they may have come from a few premature downshifts into first resulting in some crunching. I figured it would remove material from somewhere. I'll continue to ride it and pay close attention to it. Thanks for sharing your experience.

    hardwaregrrl-
    Thanks for the loaner tranny offer.

    bigdog99-
    The bike was gifted to me, so it would've been kind of disrespectful to turn around a sell it, so I decided to just build it into what I wanted. As for the luggage, I was just really fed up with doing business with jesse luggage. It's just a horribly run business that's rude and disrespectful to its customers. The bags themselves weren't that well made, the top opening was really small, the "powder coating" flaked off on its own after a couple months, the racks were REALLY poorly designed and required tools to remove the bags from the bike. Anyway, after months and months of back and forth trying to work out all the problems with the luggage, I just told them to keep their bags and give me my money back. They kept my bags and charged me a $200 restocking fee :boid
  13. Airhead Wrangler

    Airhead Wrangler Long timer

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    Just thought I'd throw this out there:

    I got a brand new OEM GS solo seat when Siebenrock sent me a defective repro. At first it was great, but the foam has softened up quite a bit and no longer supports my 210 pounds that well. On longer days, my ass bones become intimately familiar with the contours of the seatpan. Anybody got a solo corbin they'd care to trade straight across? (hopefully not with a goofy colored cover)
  14. bgoodsoil

    bgoodsoil Dare to be Stupid

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    I know they're expensive but you won't regret the money spent on a Russell. I swap out to my spare stock seat when I go offroading and it's torture compared to the Russell.

    After doing all the suspension mods to my bike my butt shifted a bit and I'm not quite in the pocket any more. I called Russell and talked to the guy that actually built my seat. He told me to send it in, he'd do an adjustment for free and even pay for shipping.

    I've done a lot of stuff to my G/S but l appreciate that seat more than anything else.
  15. Solo Lobo

    Solo Lobo airhead or nothing

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    I had a Corbin solo for my R100GS for a while, it totally sucked.. (at least IMHO)... they are dished out and don't allow you to change position at all when riding... also, they are cut down, and take away leg room......

    Well, I also had Corbin's on my R100RS and K75S and did 50K miles with those, hating them the whole way as well :lol3
  16. DreadPirateKermit

    DreadPirateKermit Ribit.

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    Wow great thread! I stumbled on here today after helping a friend drop the tranny out of his R80RT yesterday...got those old "gee I'd really like to have an Airhead GS someday" juices flowing. :bert Don't tell my wife though, because she has a thing against the "Bring More Wampun" roundel. :lol

    Seat: It will cost more than a Corbin, but having Rich's there in Seattle rebuild the one you have will be way more cost effective in the long run. Another choice is Don Weber at Mr. Ed's Moto in Albany, OR, he did a great job on my Tuono seat. I've ridden almost 1300 miles in 24 hours on that seat and the stock one was painful at 200!

    Transmission: I know jack about Airheads, but have you ever lubed the clutch splines? Oh, wait, they are in a 'dry' area, not oil bath - never mind! Back to lurking... :lurk
  17. Readymeal

    Readymeal Been here awhile

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    I know the answer of the first part of your question:rofl Sorry Airhead Wanker...i could not resist :)

    however even in a dry area splines still need to be lubed with some Honda moly 60 or something similar.
  18. bgoodsoil

    bgoodsoil Dare to be Stupid

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    yeah, I think he's got the spline lube thing handled :D
  19. Readymeal

    Readymeal Been here awhile

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    you meant he had the spline lube handled:D
  20. Dustdevill

    Dustdevill Adventurer

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    If your G/S is a real 85 you will not need to drain the oil from the final drive as these models were fitted with a metal tube running through the FD housing.
    The O-ring is metric, so you will have to ask for a 2mm x 16mm if I remember correct, but you can measure the shaft for the ID of the O-ring.