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Weasel's 1978 GS750 cafe racer project

  • Thread starter Thread starter Weasel
  • Start date Start date
Thanks Ian. That would be a last resort unless refinishing costs more than the replacements at $350 US. I'm still following leads on local shops.
 
wow man, I would just look into getting a set of 37 mm gs850 or gs1000 forks, non L models, straight legs. Put them in 82 or 83 GS1100E aluminum triples, double check those two years to make sure the triples are off of a straight leg model. The leading axle models are more rectangular shaped lower triples with less offset, the ones you want are more V shaped with more offset, those are the ones from straight leg forks. EBay listings are not always correct often because parts were switched around on various bikes before they got parted out completely.
the 37mm is definitely the better way to go. They are much stiffer than 35's that came stock on the 750. The aluminum 1100e triples will offset the additional weight of the bigger forks. The only downside is that the cartridge emulators that fit those have to come from racetech, and they are $100. It's a no brainer to swap them on vs getting $$$$ tubes for the old forks.
A good chrome used set shouldn't be too hard to find.

Or you could upgrade to some Bandit 1200 forks & 310mm brakes!
 
wow man, I would just look into getting a set of 37 mm gs850 or gs1000 forks, non L models, straight legs. Put them in 82 or 83 GS1100E aluminum triples, double check those two years to make sure the triples are off of a straight leg model. The leading axle models are more rectangular shaped lower triples with less offset, the ones you want are more V shaped with more offset, those are the ones from straight leg forks. EBay listings are not always correct often because parts were switched around on various bikes before they got parted out completely.
the 37mm is definitely the better way to go. They are much stiffer than 35's that came stock on the 750. The aluminum 1100e triples will offset the additional weight of the bigger forks. The only downside is that the cartridge emulators that fit those have to come from racetech, and they are $100. It's a no brainer to swap them on vs getting $$$$ tubes for the old forks.
A good chrome used set shouldn't be too hard to find.

Or you could upgrade to some Bandit 1200 forks & 310mm brakes!
 
http://www.ebay.com/itm/231722864058

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$76.50 shipped, that was the first good looking pair I saw in 2 minutes of getting on ebay searching only gs850 forks from lowest price & up...

http://www.ebay.com/itm/361473460101

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$20.94 shipped... all there top bottom & bolts


Same seller as forks, axle is 10mm wider than a 750, has 1 spacer
http://www.ebay.com/itm/351552107620

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$16.35, probably would combine shipping and just throw it in with the forks...

Dual disc for 275mm factory rotors, upgrade to honda 6 bolt rotors, ninja/concours calipers, & Dan aka Salty_Monk's adapter kit, chopped/shimmer fork springs, & Racetech Gold Valves... ultimate GS vintage OEM front end...

only thing better in vintage would be an 89-90 gsxr1100k cartridge fork but those really need sent to RaceTech for revalving to be really awesome. 1st gen Bandit 1200 forks, gs axle adapters and Bandit rotor spacers machined, 89-90 gsxr1100k triples or 93-05 vmx12 triples... that'd be the ultimate.
 
Or something like this, base model GS1000 (Not E or L model) single 295mm disc forks (can use your stock GS750 brakes or upgrade to a 310mm fireblade/Blackbird honda rotor & Ninja/Concours caliper with just a caliper bracket to hang the bottom bolt away from the fork a bit)

These look to have very slight rust in the top area but maybe none in the seal sliding area, may buff out even:
http://www.ebay.com/itm/231810753039
$129 shipped!

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Thanks Chuck but I already have $100 invested in powder coating on the lowers so I'm going to figure out how to refinish or get a replacement set of stock ones. I called the Harley shop I used to frequent because they used to send out parts for my HDs to get chromed all the time. They gave me the name & number of the chrome shop they use. I called the guy & he said no problem, bring them by for a quote. I'll keep you posted on what he says.
 
My fork seals & steering bearings showed up today along with a halo headlamp with black housing. It's a 5.75" diameter and will look way better on my minimalist front end than the big 7" stocker.

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All good, I've been running a highly modified set of 35mm GS650/750 forks for a long time now, dual disc, emulators, tarozzi fork brace... great handling setup. The 37mm stuff with the aluminum triples is quite nice though.
 
Excellent. Like I said before, just going to get this thing back to mostly stock for now, making small upgrades here and there like the fork damper set when it makes sense. There'll be plenty of time in the future to change things on a solid running machine.

The snow is flying here in western Pennsylvania and the meteorologists are all excited about the possibilities of this winter storm. I have plenty of coffee, beer & new parts to keep me busy if we get snowed in. Be careful out there folks.

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Got 6 of the 8 valve shims sorted today. The last two are still tight with the 2.55 shim, the smallest I have here. Mailing 4 shims to Ghostgs1 to swap in the GS Shim Club. I'll try the next four sizes smaller and go from there. That should complete a nice set of test shims to keep on hand.
 
Stopped by the chrome shop today so they could look at the forks. Told me what I was expecting but not what I wanted to hear. Forks are too pitted to save at a reasonable cost. He said I'd be way ahead with a new set at $350 US. Oh well. Got a few leads on some used sets in good shape so we'll see.
 
From everything I've read, the stock fork tubes from the factory were 35mm OD, 26mm ID and 23" long. These are clearly closer to 24". Guess it's possible a PO put a 1" over set on at some point. Or maybe one of you can point out something I'm missing.

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I'm trying to go for a racer look and make some upgrades for performance but I'm trying to avoid chopping the bike at all if I can. It's a little rough but it would be nice to retain all the factory specs in case I ever decide to turn it back to stock. Without any frame modifications, beyond removing the stock rear fender/cowl, the total length from the tank to the end of the frame is approx. 29".

After a lot of searching, I found this seat pan that is 30" in length. It should get me the look without having to chop the frame. I like the idea of the separate cushion/pad base that will allow me to customize the upholstery & padding. As I said, I'm after the racer look but I also want to be able to ride this thing semi-comfortably. I'll keep the stock pegs and try the drag bars and see how the comfort, functionality and looks go together.

image.jpeg
 
I'm trying to go for a racer look and make some upgrades for performance but I'm trying to avoid chopping the bike at all...
...I found this seat pan that is 30" in length. It should get me the look without having to chop the frame. As I said, I'm after the racer look but I also want to be able to ride this thing semi-comfortably. I'll keep the stock pegs and try the drag bars and see how the comfort, functionality and looks go together.

image.jpeg


I really like where you're going with this!

you definitely should do the popular twin pot brake mod using Dan aka salty monk's two adapters to bolt on ninja calipers and CBR Etc rotors. Ninja/Concours Tokico 2 piston caliper & 98-99 CBR900RR single front 310mm rotor (just a simple adapter plate that could be home fabbed or cheaply purchased from salty) if you're running the single disc GS750C forks. MASSIVE increase in braking performance, very healthy reduction in unsprung weight as well, bonus.

did you pick tires out yet? Avon AM26 for good grip and long wear life, Pirelli sports demons or Bridgestone bt45 battlax for awesome grip but a few thousand miles less. Rear shocks? Make sure to get rear shocks 1" longer than stock to quicken the steering by reducing the rake and trail closer to modern standards, $200 min, $300+ if you can at all budget it as the last mod, wait for a few more paychecks if that's what it takes to be able to purchase a really high quality set of shocks!
Chopped fork springs while they are apart, or just get some proper sonic springs from Rich Desmond here on the forum.
Sorry this is probably mostly rehash on my part.
 
Chuck, I love your enthusiasm about these bikes! The more I get into her, the more I understand your passion. I'm still working on the upgrades you outlined on page 1 LOL. Keep it coming though, I appreciate it.

Any thoughts on my 24" fork tubes? Are you going to the IMS motorcycle expo in Cleveland this weekend?
 
Going to release a new workout/comedy video. I call it "Watch this idiot try to remove old tires in his garage with zero tire removing tools."

:)

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