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Author Topic: CB750 K4 Build - The Cafe Tracer  (Read 119307 times)

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Offline budman

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Re: CB750 K4 Build - The Cafe Tracer
« Reply #675 on: May 19, 2019, 02:55:13 PM »


Running a week behind.  I finally rebuilt the calipers and got them mounted on the bike.  It all went pretty smooth.  I forgot to blast and repaint the brake pad dowel pin locking plates (whatever those things are called).  I’ll knock that out tomorrow.

At least I can shop for a jumper brake line and some banjo bolts now.  I think the line from the master cylinder will be long enough.
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Bud

1973 CB750K3 Chopper
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Offline SOHC4 Cafe Racer Fan

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Re: CB750 K4 Build - The Cafe Tracer
« Reply #676 on: May 20, 2019, 08:57:31 AM »
Quote from: budman on May 19, 2019, 02:55:13 PM


Running a week behind.  I finally rebuilt the calipers and got them mounted on the bike.  It all went pretty smooth.  I forgot to blast and repaint the brake pad dowel pin locking plates (whatever those things are called).  I’ll knock that out tomorrow.

At least I can shop for a jumper brake line and some banjo bolts now.  I think the line from the master cylinder will be long enough.

This is a really cool looking dual caliper set up.  I'm curious to hear how it performs.
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1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
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"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

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2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline budman

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Re: CB750 K4 Build - The Cafe Tracer
« Reply #677 on: May 20, 2019, 03:33:31 PM »
Quote from: SOHC4 Cafe Racer Fan on May 20, 2019, 08:57:31 AM

This is a really cool looking dual caliper set up.  I'm curious to hear how it performs.

Thanks.  I hope it works.

I ordered the brake line and the banjo bolts.  I hope it all gets here by the weekend.
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Bud

1973 CB750K3 Chopper
2021 Indian Scout

Offline budman

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CB750 K4 Build - The Cafe Tracer
« Reply #678 on: June 02, 2019, 01:57:02 PM »
Well, whadda you know.  It works.  I got the new front brakes working today.

I had to reorder a few parts because I ordered some of the wrong stuff, but I finally got all the right parts and got it all put together.  I’m happy to report that this setup works and it works well.  Of course it’s not as good as a brand new modern bike, but it way out performs the OEM setup and that’s what I was looking for.

I rode up an down the street for about 15 minutes, riding slow and breaking in the pads, then I took it for a 10 mile test ride.  No issues at all other than the lever feels just a tad bit squishy.  Might still have a tiny air bubble.  Gonna rebleed in a couple of days.

Overall I’m very pleased with the outcome.  Looking forward to putting some miles on this bike.
« Last Edit: June 03, 2019, 07:07:27 PM by budman »
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Bud

1973 CB750K3 Chopper
2021 Indian Scout

Offline MauiK3

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Re: CB750 K4 Build - The Cafe Tracer
« Reply #679 on: June 03, 2019, 10:00:45 AM »
Could there be heat issues with two calipers on one disc under heavy use?
Looks great.
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Offline budman

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Re: CB750 K4 Build - The Cafe Tracer
« Reply #680 on: June 03, 2019, 03:21:28 PM »
Quote from: MauiK3 on June 03, 2019, 10:00:45 AM
Could there be heat issues with two calipers on one disc under heavy use?
Looks great.

Quite possibly, but I’ve seen it done a bunch of times.  I guess I’ll take my chances.  It’s pretty flat around here and there are no canyons.
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Bud

1973 CB750K3 Chopper
2021 Indian Scout

Offline theDQG

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Re: CB750 K4 Build - The Cafe Tracer
« Reply #681 on: June 04, 2019, 03:02:22 AM »
Very nice transformation!
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