Mounting a RocCity seat on CB550 stock hinges

Represto

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I bought a round stop seat off RocCity a few months back. I've been punching myself in the face, repeatedly, publicly trying to mount it. I was going to get a frame welded up but I'd rather do it myself and I'm not a welder. Then I tried making it out of wood. It would have worked...but I thought it sucked so I ditched the idea. I figured aluminum was cheap, easy to work with and mega light. So that's what I used.

Here are the pieces that I cut.
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- 1 inch square tube, it's about 1/16th inch. I didn't end up using the two smaller pieces.
- A sheet of aluminum. I think it's about 1/8th inch.
- 1/4 inch threaded rod
- A door hinge that I chopped up a bit.

I cut a semicircle in the alum plate to allow for the wheel and wiring for the taillight. A bunch of small holes, then I hit it in the grinder and then filed and sand by hand.
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Then I bolted it all together and wrapped the tubes with $0.50 insulation. The hinge and threaded rod were connected to the stock seat hinge. I had to grind down the frame a bit so that it sit nice.
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The seat is held in place using the stock seat lock and some hardware. I cut that bolt down quite a bit after this picture was taken. It fits nice now.
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Here's a view of it mounted. It's like sitting on a cloud!
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I chopped up my old groundsheet and sized up a few layers. I'm going to glue the two layers together and then cover it with a vinyl. I just gotta figure out how to stitch it all together.
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Nice. I was thinkin about buyin a roccity seat for my 73 cb500k but wasnt sure b/c i didnt know how id mount it. Problem solved! thanks......
 
It's not really as intimidating or as complicated as I thought it would be. I also really wanted to use stock hinges...so I can swap to my 2-up seat in about 2 minutes.

Total cost of materials = ~ $20.
 
Also, I sliced off a bit of the front of the seat to make it fit just a bit better. A rotary tool with a cut off wheel worked great.

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thats great lookin..... im gonna do it. was goin to make a seat to save some $$$$ but ridin seasons comin up soon........ does he have a discount for forum members?
 
I was going to make my own seat, but I wanted fibreglass. For me to make my own would cost me way more in materials and tools.
 
Looks nice and clean, man. I have one of those seats I was going to use for another build but never ended up putting the time in before I sold the bike. Sean does great work.
 
It looks like in the picture that the insulation is pretty visible with how it sits on the frame, kind of unclean. Is that the case? Just wondering because I want to do one of these seats and use this mounting technique
 
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