CB550F Cafe Interceptor

Re: CB550F Interceptor

Here’s the final seat plug complete with half round ribs for a flex free seat.
Once the production mold is made; carbon fiber copies will be easy.


1078CafeSeat2.jpg
 
Re: CB550F Interceptor

Checking the first carbon fiber seat for fitment.
If you look closely you will see the stock rubber bumpers for additional support.

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The ¾” rare earth magnet with steel cup works like magic. The steel cup increases the power of the rare earth magnet 4 times.
Now the seat snaps shut with a positive click, but can be pulled free with a firm tug.
No apparent stress to the fiberglass seat pan while lifting or sitting on the seat.
The magnetic closure also provides a solid and balanced base with the factory hinge.



 
Re: CB550F Interceptor

I found this really cool high density closed cell foam at a local kayak shop. This stuff is great cause it wont absorb water, can be sanded to shape and is firm.

1083CafeSeatPad.jpg


Upholstered and ready for a fun summer of riding.

1082CafeSeat2.jpg
 
Re: CB550F Interceptor

Love your bike Jimmy. I hope to see it again at the 2011 Isle of Vashon!
 
Re: CB550F Interceptor

tweakin

You’ll definitely see me at the Isle of Vashon 2011. Maybe this time we can spend a bit more time riding together. Gotta tell you about last years adventures riding home too.


Louis

Thanks for the complement. I love the bling of polished aluminum and machined parts, but I was trying to make it looks as factory as I could.


Reinhard

Sorry man. I sold the seat mold a while back. Still have the fellas contact info if you’re interested.
 
Re: CB550F Interceptor

Wow. What more can I say about this build? You, sir, do some amazing work. I love the rearsets. You could definitely sell those, those totally look insane. Good work.

Mike
 
Re: CB550F Interceptor

Well up until now the build’s been all about sorting the chassis and styling out, and I’m pretty pleased with the outcome.
The bike rides great! It tracks perfectly and carves the corners with much more confidence and stability than I could have imagined for a 35 year old bike, and the single disc brake has all the stopping power I could want in a vintage café racer too.


In this next phase I’ll be focused on making the bike look good and run even better. Here, it’s all about the details.

Before I strip the bike down to the frame, I went to work mounting these awesome, fully adjustable Attack Racing billet triple trees that I found on ebay.

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Re: CB550F Interceptor

These triples are a lot beefier looking than the stock Yamaha R6 triples and lighter too.
Gonna have to find a better location for the ignition switch though.
Notice that large plate of aluminum under the steering head?
I'll machine the steering stops from that plate.


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Re: CB550F Interceptor

Before sending the frame out for the mirror black powder coating, I removed redundancies including the factory seat lock, helmet holds, tabs and anything else that stands out.
I also had tabs welded on for the muffler bracket, a little cosmetic fillet brazing to clean up things and welded the connection between the head tube and two down tubes to reduce flex.


1071Frame.jpg


1072FrameWelding.jpg
 
Re: CB550F Interceptor

When the frame was back from the powder coater, it started to come together nicely, but with the frame striped of the fenders, air box, battery and electrics is was easy to see that the rear wheel was left of center by almost 3/16”.
I relocated the Dresda swingarm with new bearing cups and now the wheel is in perfect alignment.


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Re: CB550F Interceptor

While I’m at it, I thought about making some old school headlight ears to keep the vintage look.
Here I’m boring an aluminum tube to slip over the forks.


1074HeadlightEars.jpg
 
Re: CB550F Interceptor

Once the ID is correct and the length is cut, it’s time for a test fit.
There are two rubber washers to keep a little tension on the tube and eliminate vibration.


1075HeadlightEars.jpg
 
Re: CB550F Interceptor

Here are the headlight ears after welding.
Everything fits perfectly!
Now do I dress the welds and polish or powder coat?


1076HeadlightEars.jpg
 
Re: CB550F Interceptor

The frame looks awesome powder coated in mirror black. Hope it stays that way.
You will also notice the Works Performance piggyback racer shocks on the rear.

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Re: CB550F Interceptor

I really liked the idea of relocating the ignition switch under the tank.
It cleans up the top triple tree area nicely leaving just the tach to worry about mounting up there.
Problem is that the ’77 CB550’s didn’t have an under tank option and once the frame was powder coated I couldn’t weld any mounts on.
Interestingly there are two 6mm threaded holes on the right side of the frame just under the coils that the plastic harness box bolts to.
Since I removed that harness box last year, those mounting holes made the best ignition switch mounting point I could have hoped for.


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Re: CB550F Interceptor

Earlier last year I bought a second engine on ebay and this is the bottom end opened up for cleaning and inspection.
The crank bearings are in excellent condition and well within specification.
Tranny looks real good too. I think this engine has relatively low mileage.


1082BottomEnd.jpg
 
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