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Twinpot Brake upgrade on 78 Skunk
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http://motorcycling.speedtv.com/arti...suzuki-gs1000/
Nice recent article about the introduction & superiority of the 1978 GS1000, & great first photo illustrating in far less space than 1,000 words why lowering your bike is a bad idea if you enjoy taking corners pretty fast!'77 GS750 920cc heavily modded
'97 Kawasaki KDX220R rugged terrain ripper!
'99 Kawasaki KDX220R rebuild in progress
'79 GS425 stock
PROJECTS:
'77 Suzuki PE250 woods racer
'77 GS550 740cc major mods
'77 GS400 489cc racer build
'76 Rickman CR1000 GS1000/1100
'78 GS1000C/1100
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I bought that brake lever in the auction link above, thanks for the tip! No, it wasn't broken and rewelded, thatis the gap where there is a pivot & spring related to the adjustable leverage dial on the top of the lever, NICE!
Notice anything about that GS1000?'77 GS750 920cc heavily modded
'97 Kawasaki KDX220R rugged terrain ripper!
'99 Kawasaki KDX220R rebuild in progress
'79 GS425 stock
PROJECTS:
'77 Suzuki PE250 woods racer
'77 GS550 740cc major mods
'77 GS400 489cc racer build
'76 Rickman CR1000 GS1000/1100
'78 GS1000C/1100
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it's got an 1100 alloy swinger, & also just noticed some strange horseshoe brace that must stiffen the swinger??? Notice any cbr&ninja parts???!!!??? Ohlin's or other external reservoir $$$$$ rear shocks also. Nice. GSR member's ride?Last edited by Chuck78; 12-04-2012, 09:31 PM.'77 GS750 920cc heavily modded
'97 Kawasaki KDX220R rugged terrain ripper!
'99 Kawasaki KDX220R rebuild in progress
'79 GS425 stock
PROJECTS:
'77 Suzuki PE250 woods racer
'77 GS550 740cc major mods
'77 GS400 489cc racer build
'76 Rickman CR1000 GS1000/1100
'78 GS1000C/1100
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Forum LongTimerGSResource Superstar
Past Site Supporter- Oct 2006
- 13955
- London, UK to Redondo Beach, California
Looks familiar, might be IanC? If so the shocks are some Ohlin's copies from memory1980 GS1000G - Sold
1978 GS1000E - Finished!
1980 GS550E - Fixed & given to a friend
1983 GS750ES Special - Sold
2009 KLR 650 - Sold - gone to TX!
1982 GS1100G - Rebuilt and finished. - Sold
2009 TE610 - Dual Sporting around dreaming of Dakar..... - FOR SALE!
www.parasiticsanalytics.com
TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/
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Forum LongTimerGSResource Superstar
Past Site Supporter- Oct 2006
- 13955
- London, UK to Redondo Beach, California
Still got some bracket sets & a couple of full kits of rotors, calipers etc if anyone wants anything to get ready for spring...1980 GS1000G - Sold
1978 GS1000E - Finished!
1980 GS550E - Fixed & given to a friend
1983 GS750ES Special - Sold
2009 KLR 650 - Sold - gone to TX!
1982 GS1100G - Rebuilt and finished. - Sold
2009 TE610 - Dual Sporting around dreaming of Dakar..... - FOR SALE!
www.parasiticsanalytics.com
TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/
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jms
Hey Salty_Monk,
I'm definitely interested in this mod, have been for a long time actually as I have also felt the need to "grab a handful" sometimes.
What you're offering in your last post is the COMPLETE set? Rotors, brakets, bolts, calipers.... meaning the only thing needed is some elbow grease?
If so, pm me with the price to Atlanta, GA.
Cheers!
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jfman
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should be around 147mm outside to outside. the hub I just got in the mail is about 104mm wide to the rotor surfaces (calipers don't reach far enough over spoke flanges to give you exact figure), plus 21.5mm offset for each rotor. Actually with the adapters, you are using 17mm rotors plus 5mm adapters, so about 148mm if my hub width guestimation is correct.'77 GS750 920cc heavily modded
'97 Kawasaki KDX220R rugged terrain ripper!
'99 Kawasaki KDX220R rebuild in progress
'79 GS425 stock
PROJECTS:
'77 Suzuki PE250 woods racer
'77 GS550 740cc major mods
'77 GS400 489cc racer build
'76 Rickman CR1000 GS1000/1100
'78 GS1000C/1100
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jfman
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Originally posted by Chuck78 View Postshould be around 147mm outside to outside. the hub I just got in the mail is about 104mm wide to the rotor surfaces (calipers don't reach far enough over spoke flanges to give you exact figure), plus 21.5mm offset for each rotor. Actually with the adapters, you are using 17mm rotors plus 5mm adapters, so about 148mm if my hub width guestimation is correct.
I did a quick measurement of the spacing between my fork legs and I have less than 140 mm??
I'm asking because I'd like to fit a wheel that has 135 mm center to center spacing.
Would that fit with the twinpot upgrade?
My disks are 300 mm in diameter.sigpicJohn Kat
My bikes: CB 77, GS 1000 ST Cafe Racer with GSXR 1052 engine, GS 1000 ST, XR 41 Replica with GS 1085 engine,
GS 1100 SZ Katana with GS 1135 EFF engine, KTM Superduke 1290 R 2020
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Forum LongTimerGSResource Superstar
Past Site Supporter- Oct 2006
- 13955
- London, UK to Redondo Beach, California
John I can measure for you but not until I get home... In Atlanta right now1980 GS1000G - Sold
1978 GS1000E - Finished!
1980 GS550E - Fixed & given to a friend
1983 GS750ES Special - Sold
2009 KLR 650 - Sold - gone to TX!
1982 GS1100G - Rebuilt and finished. - Sold
2009 TE610 - Dual Sporting around dreaming of Dakar..... - FOR SALE!
www.parasiticsanalytics.com
TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/
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I believe the 135 mm center to center spacing won't work in a std GS 1000 fork.
The spacing can be reduced to 117 mm with other disks but will it be enough for the twinpot calipers to clear the wheel?
What's the inside caliper overhang from the disk center?
Ideally it should be less than 40 mm ( to be confirmed).sigpicJohn Kat
My bikes: CB 77, GS 1000 ST Cafe Racer with GSXR 1052 engine, GS 1000 ST, XR 41 Replica with GS 1085 engine,
GS 1100 SZ Katana with GS 1135 EFF engine, KTM Superduke 1290 R 2020
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Originally posted by Chuck78 View Postshould be around 147mm outside to outside. the hub I just got in the mail is about 104mm wide to the rotor surfaces (calipers don't reach far enough over spoke flanges to give you exact figure), plus 21.5mm offset for each rotor. Actually with the adapters, you are using 17mm rotors plus 5mm adapters, so about 148mm if my hub width guestimation is correct.
As the CBR disks have the same offset ( 17 mm) as the original disks, the new spacing is 117+10=127 mm due to the 5 mm spacers.
SM will you please confirm?sigpicJohn Kat
My bikes: CB 77, GS 1000 ST Cafe Racer with GSXR 1052 engine, GS 1000 ST, XR 41 Replica with GS 1085 engine,
GS 1100 SZ Katana with GS 1135 EFF engine, KTM Superduke 1290 R 2020
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Forum LongTimerGSResource Superstar
Past Site Supporter- Oct 2006
- 13955
- London, UK to Redondo Beach, California
In China this week... Will try to confirm when I get back1980 GS1000G - Sold
1978 GS1000E - Finished!
1980 GS550E - Fixed & given to a friend
1983 GS750ES Special - Sold
2009 KLR 650 - Sold - gone to TX!
1982 GS1100G - Rebuilt and finished. - Sold
2009 TE610 - Dual Sporting around dreaming of Dakar..... - FOR SALE!
www.parasiticsanalytics.com
TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/
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