The rehabilitation of Sir Gustave Sabastian (‘Gus’)

Discussion in 'New Zealand' started by Box'a'bits, Aug 22, 2010.

  1. Box'a'bits

    Box'a'bits In need of repair

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    Its worthwhile doing some challenging sections just to see how capable they are. They are just a big tractor.

    When we did the 42nd MarkS noticed a big difference in how the BMW forks performed compared to how his KLR handled. No real compression damping for the 1st portion of the fork stroke. It was probably about then that I decided to do the swap.

    One other things to bear in mind is that I sometimes also carry a pillion. Nice to have some external adjustability to cope with that.

    Changing fork oils on the stock forks made a noticeable difference. Not hard to do, And not hard to change if you get it too firm. Here's my link 1 & link 2 to that.

    Not sure that a Racetech or Intimator valve set up is the way to go. Phreaky Phil investigated that with CTK Technical, and didn't proceed.
  2. NordieBoy

    NordieBoy Armature speller

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    You're not going to get much love from Dr Bob on the Emulator/Intiminator front :deal
  3. Box'a'bits

    Box'a'bits In need of repair

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    As I understand the issue:
    1. The stock BMW 41mm Marzocchis separate the rebound & compression damping functions;
    2. You can only instal one Emulator on the right hand side (rebound damping). Emulators do rebound & compression damping functions. You need to disable the damping on the right leg by drilling out the holes that control the damping on that the fork leg. Once drilled you can't go back;
    3. The compression damping in the left leg is controlled by a taper on that leg. That is why there is no compression damping at the start of the stroke, but this rises steeply as the leg compresses. This would be in addition to what the emulator would do - difficult to fine tune;
    4. The situation is often compounded by people putting in progressive fork springs, which makes 'tuning' the suspension almost impossible - as the fork compresses you get varying interactions between increasing spring rate, compression damping etc.
    Dr Bob is a Racetech retailer. He could do this if you want, but...

    Here's a link to Anton Largiaders write up on the forks

    Just made an agreement to sell a further $430.00 of parts from the bike. I've added that into the previous post where I itemised parts sold recently.
  4. Padmei

    Padmei enamoured

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    Fricking heck. Most of the value of my bike is packed up in banana boxes:huh
  5. Eddieb

    Eddieb www.AdventureRidingNZ.co.nz

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    Sweet, so your ahead then. The bank manager will be pleased.

    You'll be able to afford more farkles ;)

    Edit: hey, where did that post go I replied to?
  6. Box'a'bits

    Box'a'bits In need of repair

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    The Other Bank Manager is never pleased. She tends to take a more global view, rather than concentrating on the detail. The global view is still that I spend far to much (time &) money on this hobby. :D

    I'm a tidy kiwi, & have filed the contents of the missing post with the other 'financial disclosures' re the fork conversion.
  7. Phreaky Phil

    Phreaky Phil Long timer

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    What Rob has done a few of, is to toss the compression side damper rod away and fit another rebound leg damper rod, then fit 2 emulators. Very sucessful I hear.
  8. Box'a'bits

    Box'a'bits In need of repair

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    What have you done with your bike's forks Phil?

    I'm guessing we've all seen Kokopelli is looking for expressions of interest in cartridge fork internals to fit the stock GS forks? Hoping for a group discount but only EUR700 at present.
  9. advNZer?

    advNZer? Long timer

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    only?
  10. Kokopelli

    Kokopelli Yeah, right!

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    I will ring these guys tonight, as I haven't had a response yet. Keep in mind that Germany has a GST rate of 19%. The current price is is about NZ $1019. Plus freight and plus what ever duty they'll sting you for.
  11. NordieBoy

    NordieBoy Armature speller

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    Should be no duty, but GST may sting...
  12. Box'a'bits

    Box'a'bits In need of repair

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    Looking at the price in terms of a good shock (say an Ohlins), then the price isn't bad, especially if you want to keep the fork looking stock.
  13. Box'a'bits

    Box'a'bits In need of repair

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    Bikes is at 208,267kms.

    Changed the rear Mitas E09 tyre. Has lasted 5624kms, & still has 3mm of tread left. But very square now. Based on an average wear rate (624.9km/mm), I would have got another 937km to legal wear limit (1.5mm), which would have taken it to 6561kms. It won't be going back on though. The tyre change went surprising well. I broke the bead with the car jack & the car's towball. I cleaned the rim & polished this up a tad - which helped bead the tyre at only 30psi. :D I'll do that again.

    I haven't changed the front MT21. I changed the direction of this at the time I did the fork conversion. The 'Steves' ride has evened out some of the wear on it, & there is still good mileage in that tyre.

    The ProTaper Raptor bars became too tall following the fork conversion (extra height in the triple clamps), & I was having issues with the choke & throttle cables (& the brake line) being stretched, especially when the wheel was turned to the left lock. I have now changed the handlebars to Sunline AV OSX fat bars (anti vibration!!) CRF Hi Bend - $100 from Cycletreads. They look good, but I'm not yet convinced of their strength cfw ProTapers. They do come with a cross brace, which most fat bars forego. The sizing is good for BMWs - the throttle portion of the bar is 22mm, but the knurls for the clutch grip were 22.5mm. I ground those down to allow the clutch perch to fit. On the ProTapers I had to do much more 'modification'. Cosmetically, the Sunline's look good IMHO. They are a Nitrided Gold, which works well with the forks & the red in the bike.

    Unfortunately I wrecked the left heated grip getting that off the old bars. I have been able to bodge the heated element tube back on. The element is still good, and I've glued another grip over that.

    Had to bend the barkbusters to make them fit (set up for ProTapers).

    Unfortunately I managed to crack 1/2 of the pinch bolt fixture on the clutch perch when I was trying to get the heated grips off. I'll need to import another from Motobins (GBP 32 + freight). Fortunately there is still enough left of the original to allow me to ride it this weekend. While I was there, I noted the clutch cable has one strand frayed at the lever end. I'll get another of those too.

    Washed the Unifilter. For the number of rides I've been on with this, it was surprisingly filthy. It had also caught a lot of sand & small rocks. Given that, I'll wash it more frequently. But I'm happy that this was a good investment for the sort of riding that I do. Especially compared with a paper filter, that I could not clean, & which would need frequent replacement.

    Tomorrow night I'm going to take the brake line off & swap it around to allow a better line run.

    I should also take the exhaust off & replace the head gasket, which is seeping on the left cylinder - but I'm not sure I will get to this before the WAR ride.
  14. Padmei

    Padmei enamoured

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  15. Box'a'bits

    Box'a'bits In need of repair

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  16. igormortis

    igormortis Cafe Reise

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    Hmm. What does he think I’m up to?
  17. NordieBoy

    NordieBoy Armature speller

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    Why. What are you really up to?
  18. Box'a'bits

    Box'a'bits In need of repair

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    Organised by Buggsubique, at the Waiouru army training ground. This area is open for use in December on a limited basis, & only if sponsored by Army personnel. Originally there were to be 15 of us on the ride, 14 made it. EddieB, who had pestered Buggs to revisit the ride, broke his leg a couple of weeks prior.

    Most of the Wellington contingent assembled for the ride up at 8.30am Friday morning, at the Waikanae coffee cart, with the idea that going up early would allow a more interesting ride up, & that arriving at the training ground early would allow us to ride the Tukino Ski Field road in the evening. The group consisted of me (R100GS), Underground (Dominator 650), MarkS (KLR650), Stormtrooper (KLR650), Buggsubique (Africa Twin), & Gav24 (DR650).

    We picked up GPSman (KLR650) & Bart (DR650) at Ashhurst, then rode the Pohangina Valley to take in Takapari Rd.

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    Takapari Rd runs over the Ruahine Ranges, starts as a gravel road, and then progressively becomes steeper & less maintained through the Ruahine Forest Park into an Alpine area. Part of the top track is bulldozed from rotten rock, some in big chunks. We lost Stormtrooper part way up as his muffler bracket parted ways.

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    Photo of MarkS by Bart

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    The guys took a break in the Alpine section, at the top end of a hill climb. Faced with a number of cameras, what would you do? I took the track round the back, & avoided the hill climb completely. I know what the camera curse can do to a guy. These photos courtesy of Underground.

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    There is an A Frame Hut near the summit, but the fun / technical part comes after that, as the track summits, then starts down (eastern) Hawkes Bay South side. On a clear day you can see Dannevirke. Not today. During the ride up, the weather was fine. That deteriorated as we progressed higher into the Alpine zone, into cloud - which made visibility difficult.

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    Lack of visibility was compounded by 'surprise' erosion ruts cut across the track, some too deep for my bike to get through, all of which make line selection critical. The track is a dead end for vehicles, ending at a bog, so there was no help for it - we had to ride it again...

    Photos by Bart. Some ride with deorum. Others....

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    MarkS's misty video of the ride back up to the summit from the dead end

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    Back down at the gate to the Forest Park. The road down from here improves to a farm track, then gravel road. Huge views though.

    This photo by Bart

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    Made our way to Taihape via the Rangiwahea - Mangaweka Rd, then on to Taihape for a late lunch (Latte & Steak Burger). Replete, we rode on to Waiouru, where we met Night Falcon (690 Adv) & 9Fiddy (KTM 950a).

    At camp, Buggs gave us a briefing on the unexploded munitions (mortar rounds, smoke bombs, artillery shells etc) we might encounter in the training grounds. Best not to run over anything rusty out there ..or even to cast your shadow over it. Some of the older munitions date from WWI, & can be exposed over time, due to weather (snow melts & run off) & ground movements.

    Accommodation was single rooms in Army Barracks - $55 for 2 nights. Pretty good &#8211; real beds, linen provided.

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    As a group, we decided to forgo an early meal at the camp, & rode up to the Tukino Skifield Road, following army tank tracks paralleling SH1. These proved challenging for Gus &#8211; basically an issue of width & lack of height. The cylinders don&#8217;t fit the tracks, & when they got deeper&#8230;I did try riding between the ruts, but this often wasn&#8217;t possible, given tussock grass hummocks etc.

    Stormtrooper had issues with his light coming loose at SH1, so stopped to repair this.

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    The Tukino Skifield Rd is not far from the summit of the Desert Rd. This wanders through volcanic sand fields, & was a taste of Saturdays riding. Aside from being loose, this generally was good for traction. Further up the mountain, the road became much rockier.

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    The views from the repeater station were fairly impressive, if gloomy, given the cloud cover round the mountain.

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    Shades of LOTR..

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    On the way back we stopped at a dry lake bed to play dirt trackers. Nice to be able to drift in safety. The next two photos from Underground

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    Ended the day riding back on tank tracks. Nearly crashed a few time when the crash bars dug into the walls of the ruts. On one section I had to duck walk the bike along to keep the weight off the suspension, to keep the bike was as tall as possible. A couple of times I decided that I'd had enough, but caught the group, so kept going. Photo by Bart

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    Did a final steep downhill (engine off, braking with the clutch), then took to the road after that back to Waiouru township to fill on Butter Chicken, then back to barracks for a nice hot shower & bed. Funny, I remember that downhill from Desert Storm way back in the early 90's.

    Bloody full & tiring day...
  19. Box'a'bits

    Box'a'bits In need of repair

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    Saturday was a scheduled attack on the desert, to entertain the budding Dakar riders amongst us.

    But first, an Army mess breakfast, which I am sure was nutritious.

    The riding for the day started a little later, to allow four more riders to arrive. These were Hugo Nugo (EXC520 on supermoto wheels), Clint640 (KTM 640), Waihou Thumper (XT600), & MXNut (DR650). While we were waiting, a few attended to running repairs to their bikes.

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    Buggs briefed the newcomers on Waiouru ride etiquette. I am fairly sure that this wasn&#8217;t absorbed by all. Civilians are not as good at taking on board instructions as the Army. A question of consequence, I guess. One of the instructions was that we ride as a group & not deviate from the planned tracks. Both went out the window fairly shortly after we left camp.

    One of the first major challenges of the day was a climb up a rutted hill, for those mad enough to try it. It was probably too early in the ride day for some I guess.

    Eventually headed into the Desert. Almost as soon as we did so, Buggs rode into a rut, & cartwheeled the Africa Twin. He sustained a bit of damage there, but fortunately nothing too serious to himself (deep bruising to his leg). Which was a relief, because the weekend could have ended right there, given he was the ride leader / sponsor. While we waited for him to collect himself, we had a play in the surroundings.

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    Did a quick ford (quite deep & fast), then followed some tracks towards Ruapehu. Some tracks were in dried up stream beds, which had shifted sand & rock down from the mountain.

    This photo by Bart

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    In a few places the sand became quite deep. Especially once we got near the forestry section, which tended to push everyone into the same tracks, with a consequence the sand was quite rutted. Have to say that the outriggers went out on a number of occasions in that stuff, because I just couldn&#8217;t keep up enough momentum to keep the front wheel from digging in, & losing control. I was blowing fairly hard at one point & MarkS offered to swap bikes. I was no better on the KLR, but at least it was a little lighter. Gives one new appreciation for the Dakar riders.

    Next 2 photos by Bart

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    Made it up to the playground &#8211; some riders went off to get as far up the mountain as they could, then returned later to play on the hill climb. I had lunch &#8211; the deep sand had killed my energy levels. In hindsight I wish I had gone further into the mountains & done the hill climb. Speaking of which, that proved very entertaining, & quite photogenic. But the photos don&#8217;t do justice to how steep it was. The next three photos are courtesy of Underground

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    Some riders found this too tame, so tried another climb. Unfortunately this was too much for some &#8211; a portion of it was loose & dipped, which meant that the bikes weren&#8217;t carrying enough speed for the steeper portion of it. Buggs, Bart, & Clint dumped their bikes there. Buggs&#8217;s Africa Twin was starting to look decidedly second hand after losing the screen.

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    The next two photos are courtesy of Underground

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    The ride back down the mountain was better than the ride up. I was more confident in the sand, & also started going off track to avoid the churned up tracks. The downside of this was that I needed to keep near the track, & once bellied the bike (on a scrubby bush) trying to get onto the track. I ended up pulling it out backward, pulling on the pannier frames. That was as tiring as riding the soft sand.

    Buggs took us across to the training area the Army is using for Afghanistan. I was getting much more confident in the sand & rocks by then. A few nameless riders made it to the fort first & entertained themselves encouraging hapless riders into a hidden rut, which was savage enough to bottom out suspension & flat spot rims, but not enough to throw riders. These two photos courtesy of Underground.

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    Just up the track was the lahar & lava field. The photos speak for themselves. People in the photos give a sense of scale.

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    Rode back to SH1 on more sand & gravel (getting good at this now), & back over the ford.

    Some people just can't help showing off for the camera. Photos naturally by Bart.

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    Across SH1 to follow a gravel road to Lake Moawhango. The road gets rough coming down to the lake &#8211; fairly coarse rock & a little steep, but still a good formed road.

    Two more photos by Bart

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    Back to SH1. Some took tank tracks back to barracks. I decided to SH1 it, & hit the showers early.

    Army food for dinner, followed by a convivial evening drinking Buggs & Clint&#8217;s Bourbon. Bed after 11.30pm.
  20. Box'a'bits

    Box'a'bits In need of repair

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    Sunday was to be a wind down day. Army breakfast at 7.30am, ready to ride after 9.00. Rode gravel out of the camp to a peak in the Kaimanawas. A highlight was racing some wild horses alongside the road. Shortly after that, a hare tried to kamikaze on the other side. At the end of the first gravel road, the rocks because fairly large & loose, but the views from the peak were good. Big country.

    First photo by Bart

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    Didn&#8217;t get up to Lake Moawhango, though the others did. Photos courtesy of Underground

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    Back to camp, packed up the bike, & hit the road back to Wellington. Rode thru Mangawekas / Rangiwahea / Kimbolton, round the back of Ashhurst, & back into the zombie-like SH1.

    Had a rest day today (Monday).