Twinpot Brake upgrade on 78 Skunk

[posplayr]

Single = 14mm

Dual = 5/8" (16mm)

14mm will give more lever travel (might feel spongey).

This is the one that I use. They are new, work great, right bore. Work with stock mirrors & importantly they are cheap!

Good replacement for anyone using stock brakes too.

http://www.ebay.com/itm/FRONT-BRAKE-...2710c6&vxp=mtr

Was that brake handle broken and rewelded?

[Chuck78]

http://motorcycling.speedtv.com/article/bikes-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!

[Chuck78]

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?

[Chuck78]

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?

[salty_monk]

Looks familiar, might be IanC? If so the shocks are some Ohlin's copies from memory

[salty_monk]

Still got some bracket sets & a couple of full kits of rotors, calipers etc if anyone wants anything to get ready for spring...

[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!

[jfman]

Can you tell me what the spread is between the two rotors once the spacers are installed?

[Chuck78]

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.

[jfman]

Thanks for the info!

[John Kat]

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.

Is 147 mm the outside to outside spacing of the disks for the GS 1000?
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.

[salty_monk]

John I can measure for you but not until I get home... In Atlanta right now

[John Kat]

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).

[John Kat]

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.

I don't know if we are talking about the same thing but a std GS 1000 has an outside disk spacing of 117 mm.
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?

[salty_monk]

In China this week... Will try to confirm when I get back