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Twinpot Brake upgrade on 78 Skunk

Hi Salty Monk, I have borrowed your ideas of the Honda disks and Concours calipers to uprate the front end of my GS1100GK. As you will know the GK has fatter forks and wider trees than everything else. I didnt have to shim the disks at the hub, and using the original Concours brackets with some extensions welded on (certified welder, crack tested) located the calipers spot on over the disks. Used the Concours span adjustable m/c as well. Picture over at the "what did you wrench on today" thread. Thanks for the inspiration.
 
Great, glad it worked out. A couple of people have welded brackets the way you have, seems like it should work ok and has for them as far as I know.

I’d definitely want a good welder as you did, would be good to know the material used originally, I was a bit worried it would “let down” the bracket and make it flex but I think it’s thick enough that you’d be ok even if it did. :)
 
Just wanted to bump the thread to let members know that I do currently have brackets. Due to some drop off in demand over the last year or two this latest batch will likely be the last time I run these. :D
 
I may be interested in picking up some brackets. First, I'm trying to figure out if the '83 GS550ES calipers will directly bolt on to my '81 GS750E forks. I want to upgrade to opposing piston calipers rather than the sliding/floating calipers.

Question:
Can I install other calipers with your brackets? Specifically, the Yamaha four pot blue dot calipers? FJ1100 with blue dots.
FJ1100 with blue dots.jpg
 
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Another question:
Have you considered making and selling radial conversion brackets? I'd love to put on the Yamaha six pot radial calipers? RC51 with silver dots.
RC51 Radial Conversion.jpg
 
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I'd love to too! Those FJ guys have a lot more room to work with between the fork legs. We're stuck with twinpot sliding pin calipers I'm afraid, opposed pistons just won't safely fit on anything other than an 1150 using stock forks & wheel. :)
 
I responded in your other thread. It's a specific bracket set for a particular choice of calipers & rotors on stock forks & using stock wheels. Lots of info earlier in the thread if you read through.
 
When going from a 650GL to a 650G fork for dual discs, will one need to also change the axle and spacers on a GL wheel to fit the G fork? Thank you.
 
Eric said:
When going from a 650GL to a 650G fork for dual discs, will one need to also change the axle and spacers on a GL wheel to fit the G fork? Thank you.
Click to expand...

If you use the original triple tree then in theory the spacer pack and axle should stay the same...

In practice most are interchangeable apart from there is a different in the 35mm fork leg axle as opposed to the 37mm fork leg axle. Most of the triple trees set the forks at the same width. Anything with a 16" front wheel or a 40mm fork (GK) is different.
 
Thanks- Im going with the G triple to keep the rake reasonable. Ill measure stuff up when I have parts. Pretty sure the leg ctc is narrower, but not sure if the axle mounting faces are the same width. I guess Ill find out!
 
Be interesting to see what you find out. I've not directly compared a G to an L as far as width from memory. :)
 
Set of 83 forks have arrived, pair of calipers from 01 Concours arrived, rotors for a CBR600F3 arrved, some various miscellany and I can swap out the front end on this '81 gs1100e for twin pots.

Stainless steel lines I just put on already made a noticeable improvement over the (no exaggeration) 41 year old brake lines (yep, had the original lines manufacture date 01/81 still legible).
 
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I wanted to bump this thread as a couple of people have asked me about it. I do have a limited number of bracket & spacer kits left (all powdercoated black as normal) but I likely won't be getting any more following this batch, not so much demand any more..... :)

I may have a set or two of rotors somewhere & a Master cylinder or two that would work well with either of the caliper types that work (Ninja/Concourse or EX650 / SV650 / DL650)
 
salty_monk said:
I wanted to bump this thread as a couple of people have asked me about it. I do have a limited number of bracket & spacer kits left (all powdercoated black as normal) but I likely won't be getting any more following this batch, not so much demand any more..... :)

I may have a set or two of rotors somewhere & a Master cylinder or two that would work well with either of the caliper types that work (Ninja/Concourse or EX650 / SV650 / DL650)
Click to expand...

Good idea, I've given your email address to a couple of guys who have since gotten hold of you.
 
Hi Dan,
I'm looking into the purchase of one of your front brake upgrade kits for my GS 1000 ST.
A couple of questions:
Do the SV 650 calipers work with the kit and if so what model year?
Does the kit work with the OEM slotted disks of the 1980 GS 1000?
Will you please send me a quote including shipment to France post code 47330?
Thanks
John
 
John you'll have to swap to the CBR disks or someone used a set of Valkyrie ones back in the thread somewhere if you want something a bit more classic looking.

The SV650/DL650/EX650 all used the same caliper. The Kawasaki ones are the newest I think - from about 2009 to 2016. I think SV is 99 to 06 and DL is 2004-2011.

You can use the very newest EX650 ones I think (untested) but they use an 8mm bolt and are nissin not Tokico. I bought a set to try and was going to drill out the threads and re-tap to M10 fine. There is plenty of meat to do that. I still have them in a box somewhere....

My guess is about $125 to get them to you all in. :)
 
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