My '86 r80 g/s pd

Discussion in 'Airheads' started by netsuke, Nov 29, 2011.

  1. netsuke

    netsuke netsuke

    Joined:
    Jul 8, 2007
    Oddometer:
    36
    Location:
    Melbourne Australia
    Hi everyone,
    lurked for a while, joined, lurked again and back again.. more hapeless then ever when it comes to using forums.
    Can you tell me how to start a thread please ? After years or riding BMWs r1150 gs / gsa / gse and R1200 gsa, I have decided to step back in time (I don't ride that much anymore) and bought an '86 r80 g/s pd with less than 40000km and it is in showroom condition. I intend to customize it a bit but strictly no permanent mods such as modifying the frame or the engine. .. So I'd like to pick people's brains to learn what is feasible and reversible : forks, swing arm..Trying to find the right thread, please point me in the right direction. Thank you.

    Attached Files:

    #1
  2. Rucksta

    Rucksta SS Blowhard

    Joined:
    Oct 26, 2008
    Oddometer:
    2,724
    Location:
    Gold Coast
    Looks like you found the right spot - welcome.
    Nice find looks totaly unmolested.
    #2
  3. bikerfish

    bikerfish flyfishandride

    Joined:
    Aug 18, 2010
    Oddometer:
    2,167
    Location:
    western pa
    all depends how you want to use it. with it being in such nice condition, I doubt you are going to be beating the snot out of it in the woods. if it were me, I'd upgrade the rear shock, maybe get some better fork springs and oil up front, a set of handgaurds perhaps, and I can't ride a motorcycle without bags, so that would be on my list.
    great looking bike! makes me want to dig mine out and start restoring it!
    #3
  4. netsuke

    netsuke netsuke

    Joined:
    Jul 8, 2007
    Oddometer:
    36
    Location:
    Melbourne Australia
    Thanks Ruksta, good suggestions Bikerfish. You are right, am not going to beat the hell our it but it'll still do some easy dirt around my fav haunts (Flinders, Innamicka, Williams Creek and beyond). If possible, I'd like to put tubeless rims on it (lifted from an r100gs). At the rear, this would mean changing from the 3 lug mono to the 4 lug para : has anyone done that ? Is it possible to swap a mono for a para without modifying the frame ? Alternatively, I guess I could find another mono wheel hub and have it laced on a tubeless rim ? but I don't know how many spokes the tubeless wheel has.. and that rim is only 17" so it might have an impact on revs and speed, and it is wider so I don;t know if there will be enough clearance...
    At the front, it might mean changing the whole fork. Again, is it feasible without mods .. I've heard that the r100gs fork will bolt straight on. Have also seen a suzuki fork on a pic somewhere in the forum.
    Lots of question, too many in fact, but any advice welcome !
    #4
  5. Airhead Wrangler

    Airhead Wrangler Long timer

    Joined:
    Mar 4, 2008
    Oddometer:
    6,824
    Location:
    Back in Seattle, FINALLY
    You're going to have some problems lacing a BMW tubeless rim onto a mono hub. The mono hubs have the spoke heads in the hubs and the nipples in the rim. The tubeless rims are the other way around. A GS rear wheel can be modified to fit a later 4 lug mono final drive. The later mono final drive is available in a few higher gear ratios as well as the original 37:11 G/S ratio.

    Yes, the GS forks do bolt right on, but you'll need a GS front wheel and brake setup to bolt on as well. I had a GS front end on my ST and it was a huge improvement.
    #5
  6. Lornce

    Lornce Lost In Place

    Joined:
    Aug 17, 2003
    Oddometer:
    19,722
    Location:
    Way Out There.
    Someone's got to say it, so here goes... :evil

    Original R80G/S-PD's are hotter than R90S's on the collector radar, and that one's a looker :deal

    Save it for Sunday best and go get yourself an R100GS to thrash around and live out your tubeless airhead bush-whacker fantasies. :deal

    I'm just trying to help.

    :D
    #6
  7. Tanami

    Tanami Under The Weather

    Joined:
    Mar 26, 2006
    Oddometer:
    321
    Location:
    Far, Far Away.
    I'll follow that up. Sure dont wont to preach to you but your post is mighty hard to read. You have scored a golden bike, and the changes you want would make it easier and (most significantly) cheaper even to go out and buy a r100gs with the scratches and nicks already in place. You can mess with that bike, hell it yours to do what you want. But I'm gonna cry.
    #7
  8. fishkens

    fishkens Long timer

    Joined:
    Nov 14, 2009
    Oddometer:
    5,360
    Location:
    Seattle, WA
    My only advice is to ask yourself why you want to hack such a nice looking bike.

    There are no right answers but I'm interested in hearing yours.
    #8
  9. ontic

    ontic

    Joined:
    Jul 14, 2008
    Oddometer:
    1,316
    Location:
    Melbourne
    Welcome netsuke,
    Congrats, that's a beauty.
    another Melbournian with a G/S here. Yours is just a little bit cleaner than mine:D

    Considering all your questions and interests it looks like you have got a bit of reading to do... make that a LOT of reading to do. I'm not sure where to start with thread recommendations, I'd just do a google advanced search for G/S within the advrider.com domain and start from there...

    Your bike sure is a good example, and like the others I wonder about the wisdom of doing too much stuff to it (but then I'm doing a lot of stuff to mine so I can't really talk).

    Depending on what sort of riding you want to do on it- and if this is not 'beating the hell out of it' -then it is most probably going to be perfectly sufficient in stock form. My R90/6 gets the hell beaten out of it on dirt and it does pretty damn well- with road tyres. I am definitely planning on beating the hell out of my G/S, and doing long loaded-down touring on it, so that's the purpose to which I am aiming my mods- plus my G/S was a bit of mess when I got it and one thing was leading to another- major scope creep and if I am doing to A, then I might as well do B and C...

    Considering the monolever is one of the main things that many people love about this (cult) bike, it seems a bit odd to swap to a para just to run tubeless.
    Rear suspension upgrade seems like a no-brainer to me, though from the looks of your bike it may very well have something decent on the back already.
    Front end? Well, lots of options.

    If it were me I would just sit back, relax, ride that sweet bike as is for a while and see how you feel about things, and take your time reading up on all the great info around the place. You might be happy with it as is. Whatever you do don't make any decisions for a while yet.
    If you want to catch up sometime and compare bikes and chat about stuff then shoot me a PM and we can figure something out. Unlike many of the others in Old's school, some of them who have already posted here, I am far from a fountain of knowledge on airhead (and G/S) wisdom, but I've been reading for a couple of years and have absorbed a little, and could at least show you and talk about what I am doing to my G/S and why, and all the other things I read about and considered, etc.

    Anyway, I'm in the northern burbs, I'd invite you around for a beer, but I'm not drinking at the moment, so you'll have to BYO or be happy with mineral water or a cuppa:deal
    Cheers,
    #9
  10. Padmei

    Padmei enamoured

    Joined:
    Mar 12, 2008
    Oddometer:
    4,099
    Location:
    Nelson New Zealand
    Please don't do anything to it. Honestly. There are many bikes out there that are in OK condition that would be better to muck around & change components. I can't believe I saying that as i'm far from being a purist)

    Have a look at most of the build threads & you'll see they have started with mediocre looking bikes & changed parts (& swapped them back, & changed them again:evil) to get them to their standards.
    Ontic is doing great things, BMWRSNUT has tricked his out, there are some outstanding builds as well those that have just replaced shocks, forks etc.
    I came into airheadedness knowing not much. I have learnt a lot & forgotten even more:D
    #10
  11. xiaoming

    xiaoming Adventurer

    Joined:
    Jun 20, 2007
    Oddometer:
    14
    You have a real nice and cool bike. Suggest you leave it as it is, no modification or additional stuff needed.

    Envy you. If Singapore allows import of used bike, I will definitely bring one in.
    #11
  12. netsuke

    netsuke netsuke

    Joined:
    Jul 8, 2007
    Oddometer:
    36
    Location:
    Melbourne Australia
    Thank you all for your input, much appreciated. Rest assured that I will not hack this bike - too much time and effort have gone into bringing it back to its former glory and I won't be branded as an iconoclast. As I tried to emphasize, I would not make any permanent mod whatsoever, meaning if various parts cannot be bolted straight on and straight off to play around with various configurations, then I won't do it. Indeed I still have a lot to read (in spite of having already lurked for several years) but the problem is to remember ! My hat off to some of you for what you do to your bikes - Wrangler, I read everyting you post, thanks for answering my question and looking forward to reading about your progress on your low-fat weightwatchers project ! Lornce and Tanami, point taken, a mate has already told me the same thing. Fishkens, I would not have hacked it, I swear. Ontic, thank you, I'll pm you as soon as I've worked out how to do it.
    For the price of a para and 1 tubeless rim perhaps i'll just get a near-new dr to trash.
    Thank you all for your collective wisdom, I'll post more pics soon.
    #12
  13. ontic

    ontic

    Joined:
    Jul 14, 2008
    Oddometer:
    1,316
    Location:
    Melbourne
    here is some reading to get you started if you haven't already come across it,
    front end swaps,
    unholy union (click links), I, II, III and IV.

    Along with a lot of others I'm currently doing II, ie the WP50 forks.

    there is also various threads covering the GS front end swap around the place- a lot of good stuff written by One Less Harley.

    It doesn't make much sense to me to do a paralever swap... how badly do you want a tubeles wheel? others may disagree... but if you are just itching to do something to the rear end to match a new (possibly increased travel) front end there are 50mm bolt on rear end extensions. A couple of fancy boxer parts places sell them overseas or our very own Paul Rooney also sells his own kit.
    Again, all depends on what you want.

    Neither of these front and rear mods would require welding on the frame and (so long as you did a complete front end swap- keeping your original G/S one complete, and had a spare drive shaft to replace your lengthened one) could be reversible in probably a days work.

    Of course you could just improve what you already have- better springs in the forks and some cartridge emulators and a top of the line aftermarket shock. I don't think that would offend any of the purists now, or the potential buyers if you choose to sell. If you are unhappy with the stock front brake then there are bolt on options (oversize rotor, better calipers with relocation brackets).

    Anyway, I'm sure others will add more.
    For PM'ing you just click on a users name and then on the drop down option send a private message to '.....'.

    I'll shoot you one now anyway,
    cheers,
    #13
  14. Arkwright

    Arkwright Grumpy ole Git

    Joined:
    Sep 1, 2009
    Oddometer:
    184
    Location:
    Lincolnshire, Engerland
    Put some better fork springs in the front with proper oil, a decent rear shock, 320mm front brake rotor conversion and an H4 HID 50 headlamp conversion and ride it!

    I'm slightly puzzled by wanting to go tubeless, I've got both and the tubed Mono is a lot less trouble than the Para................................believe you me!
    #14
  15. Lornce

    Lornce Lost In Place

    Joined:
    Aug 17, 2003
    Oddometer:
    19,722
    Location:
    Way Out There.
    Glue a new rim strip in place with silicone and go tubeless with your existing wheel.

    :augie
    #15
  16. netsuke

    netsuke netsuke

    Joined:
    Jul 8, 2007
    Oddometer:
    36
    Location:
    Melbourne Australia
    "Glue a new rim strip in place with silicone and go tubeless with your existing wheel."

    That's it ! You nailed it !
    #16
  17. gsd4me

    gsd4me 90% bluff

    Joined:
    Dec 11, 2005
    Oddometer:
    7,931
    Location:
    Brisbane, Australia
    While we`re talking about front end swaps, what is a good `right way up` set of forks that fit easily enough. I have heard that DR650 forks can do the job; anyone heard this too?

    I much prefer the look of RWU forks, especially with gaiters` fitted.
    #17
  18. ontic

    ontic

    Joined:
    Jul 14, 2008
    Oddometer:
    1,316
    Location:
    Melbourne
    here are a couple of threads for RWU forks swaps
    http://www.advrider.com/forums/showthread.php?t=304234
    http://www.advrider.com/forums/showthread.php?t=676340

    They are numbers I and II of the 'Unholy Union' threads I linked to on my last post. The other two threads are for USD forks.
    The first link is for DR650 forks, and second for Conventional White Power 50mm (WP5060) forks with adjustable compression and rebound.
    I am going the second route.
    I too like the look of RWU forks, but more importantly for me these forks are claimed by some to be 'the best conventional forks ever made'. I too like the look of gaitors on the airheads, but I have not yet found a set of gaitors for these beasty forks- I'll try to figure that one out later.

    Solo Lobo, myself and a few others are doing this swap with the use of some custom triple clamps (you'll find all the links for this stuff if you read that thread)- however you don't actually need custom triple clamps, the stock KTM ones that will come with the forks, with there much smaller offset, have worked good enough for many others- including a lot of Paul Rooneys happy customers (he usually uses WP5060's or USD WP4860's). is all about offset of course. Due to my uncertainty about the trail that these custom triples make with these forks, I am also going to modify a set of triples with a smaller offset (24mm) to work with these forks and keep the one I like the most. Another story for another time...

    Anyway, IIRC I think the DR650 swap is pretty much plug and play. The WP5060 can be a little bit more work (the stock KTM stem at least will require some work, or a new one made).
    I've been lucky and got some cheap components for this swap from two inmates- the forks and wheel- but even then I'm already probably Aus$1k into it... and that is not counting the Scotts stabiliser that is also going on:evil
    #18
  19. Tanami

    Tanami Under The Weather

    Joined:
    Mar 26, 2006
    Oddometer:
    321
    Location:
    Far, Far Away.
    Hi Ontic,

    WP extreme gaiters can be purchased from Andre:

    http://www.enduroklassiker.at/index.php

    select 'products' and then 'fork parts' I have bought a few items from Andre and his service is excellent. he also has a good range of repro vintage plastics that may suit your purpose.
    #19
  20. ontic

    ontic

    Joined:
    Jul 14, 2008
    Oddometer:
    1,316
    Location:
    Melbourne
    Wow, thanks. Thread drift is awesome sometimes.
    Have you had these forks before? (on your Rooney special maybe?)
    I'm also currently trying to find out what fork seals and dust wipers are the best. Ebay brings up Pyramid parts, but googling that brand doesn't bring up good reviews- any idea what Andre's fork seals and dust wipers for these forks are like?
    Looks like I've got another order to place.
    #20