Deacon's CB350

Re: Deacon's 1972 CB350 Cafe Project

HerrDeacon
I really love the looks of your fender! Your use of the term "plug" confused me, so help me understand what you did. Did this...

frontFenderPlugGlass.jpg



Turn into this fender?


frontFenderPlugMounted2.jpg



Or was the piece formed from the original fender in the first pic the beginnings of the mold that was then used to lay the fiberglass inside of to make the fender. I thought a plug was the piece a mold was formed from and you sandwiched the final product 'glass between the plug (convex) and the mold (concave).
 
Re: Deacon's 1972 CB350 Cafe Project

Admittedly I could be using the incorrect terms, but they are the ones I've heard. Basically, I taped over the stock fender and then laid fiberglass over it to get the basic shape and curvature of the fender (didn't want to start from scratch). I then popped this fiberglass off the stock fender and used it to shape a fender to my liking. This new fender is what I call a plug. I'll use this (after I have it shaped and prepped to my liking) to create a mold. I'll then use the mold to pop out a new fender.

Make sense? Again, my terms may be incorrect, but hopefully you get what I'm trying to accomplish.
 
Re: Deacon's 1972 CB350 Cafe Project

Well I trimmed up the fender to match the mockup I did in the earlier picture and I like it much better then then initial version. I then smoothed it out as good as I can and just finished painting it. Once dry I'll sand and polish to get it as smooth as possible. I have the day off this coming Friday so I'm hoping to have the paint and polish done and the plug flanged and ready to go.

If this mold experiment doesn't work out, I'll just use this plug as the fender, at least all won't be lost.

Pic of trimmed fender on bike:
frontFenderPlugPaint.jpg


Second coat of paint. I also had a very rusty carb top that I've prepped as well. May try making a mold of this part as well.
plugPaint.jpg
 
Re: Deacon's 1972 CB350 Cafe Project

HerrDeacon said:
*snip*
This new fender is what I call a plug. I'll use this (after I have it shaped and prepped to my liking) to create a mold. I'll then use the mold to pop out a new fender.

Make sense? Again, my terms may be incorrect, but hopefully you get what I'm trying to accomplish.
Click to expand...
Clear as a bell, that is exactly the terms I would use. I thought the one in the pic was the finished product not the plug for the mold to turn out more. THANKS!
 
Re: Deacon's 1972 CB350 Cafe Project

HerrDeacon said:
Pic of trimmed fender on bike:
frontFenderPlugPaint.jpg


Second coat of paint. I also had a very rusty carb top that I've prepped as well. May try making a mold of this part as well.
plugPaint.jpg
Click to expand...

What type/color pf paint is this? It is very close to the paint on my VW GTI. I'd love to utilize this on my next bike.

This build is awesome by the way!
 
Re: Deacon's 1972 CB350 Cafe Project

Thanks scottfish. That paint is some old stuff I had laying around from painting my old KZ. Its Dupli-color T299 Dark Shadow Gray.

Here's a pic of it on that bike to give you a better idea of the colour:

wallpaper.jpg
 
Re: Deacon's 1972 CB350 Cafe Project

Finally got around to tackling making the mold for the front fender. Bit nervous as it was my first time but it came out pretty good. The resulting mold is not perfect (has a few small voids) but is usable, especially since its not a production mold and I really only want to pull one part from it. Learned a lot through the process though, which is the main thing for me as its the main reason I do most of this stuff. Here are a few pics I took along the way. I'm going to give the mold a few days to make sure its cured and then I'll try popping out a fender. Also, as I mentioned earlier, I also tried molding a carb top just for fun, came out decent as well. I can definitely see how the sound of a part breaking free of a mold can be addicting, I'm having a blast doing this.

As a note, its warmed up a bit here recently so I could have the garage door opened. Therefore, I picked up some polyester resin to make the molds as its a fair bit cheaper. I'll use epoxy for the final fender.

Prepped and mounted on board, ready to be molded. The yellow you see is modeling clay:

frontFenderPrepped.jpg


carbTopPrepped.jpg


Glassed over and waiting to cure:

frontFenderMold.jpg


carbTopMold.jpg


Plugs popped out fairly easily, end result two molds:

fenderAndCarbMolds.jpg
 
Re: Deacon's 1972 CB350 Cafe Project

HerrDeacon said:
Plugs popped out fairly easily, end result two molds:

fenderAndCarbMolds.jpg
Click to expand...

I've always wanted to try this. What do you use for release agent?
 
Re: Deacon's 1972 CB350 Cafe Project

PVA. I tried, upon recommendations of experienced people to just use parting wax, but it never worked out for me. The part would always stick. PVA works like a dream, very easy to pop the part out. I also tried using PVA after waxing but it used to bead up so I couldn't do that either.
 
Re: Deacon's 1972 CB350 Cafe Project - Fender Mold Done

By chance would you be willing to make another? I'm in need!

IMG_19031.jpg
 
Re: Deacon's 1972 CB350 Cafe Project - Fender Mold Done

Sure, I'll be selling them for $300 each ;D ;D Just kidding of course.

I'll see how they come out of the mold first to see if they are even usable (this is my first attempt). I'll post one here so you can see if you like it. Keep in mind that I'm no professional so you will most likely need to do some touch-ups prior to painting. I'm hoping to try the first one later this week.
 
Re: Deacon's 1972 CB350 Cafe Project - Dismantle and Store

Well I found out today that our house is sold and we have to be out by the end of the month. So, since I don't have a trailer or pickup, I need to dismantle the 350 (and the MB5) so I can easily move them around. Going to bring them down to my father's place until we move into our new house.

Tear down was pretty straightforward, but ran into some difficulty with the engine. Couldn't get it out with the starting motor on, but once that was removed it was fairly straightforward. I left the trees, swingarm and center stand on since I'll have to reassemble to finish up some mockup activities I need to take care of before the final paint and assembly.

Have to say though, after working on the MB5 all weekend, this 350 felt huge and heavy :eek:

Pre-Teardown:

preTeardown.jpg


Post Teardown:

postTeardown.jpg


postTeardownEngine.jpg
 
Re: Deacon's 1972 CB350 Cafe Project - Dismantle and Store

Got the bikes all put in the back of the SUV today and brought them down to store at my father's place. Both bikes fit in the back of the rig no problem. Only thing I didn't take at this time was the 350 engine. I'll bring that down another day when I'm feeling a bit stronger :)

moving_1.jpg


moving_2.jpg
 
Re: Deacon's 1972 CB350 Cafe Project - Dismantle and Store

Unfortunately not a work update, but I did get a nice piece of the puzzle in the mail...new Pamco electronic ignition. A lot of good results from hondatwins.net members sold me on it. Pete seems like a real nice, responsive seller too.

pamcoIgnition.jpg
 
Re: Deacon's 1972 CB350 Cafe Project - Dismantle and Store

Still no work on this bike as it takes a back seat to the MB5 and as I gather up some necessary parts. My MB5 didn't come with a headlight and I found a couple of XS400 lights for sale locally that I picked up. They're not perfect but should clean up nicely. However, they are 7" which is really too large for the tiny MB5, so I'll swap the stock 350 headlight over to the MB5 and use one of the 7" ones on the 350. May try and use the other one on the Gladius.

headlights_1.jpg
 
Re: Deacon's 1972 CB350 Cafe Project - Dismantle and Store

Any ideas on the custom exhaust. I'm in the same boat. Feels like a make or break part of the build no? Something to play with.
 
Re: Deacon's 1972 CB350 Cafe Project - Dismantle and Store

Sorry, read the above post.

Still waiting on the exhaust:)
 
Re: Deacon's 1972 CB350 Cafe Project - Dismantle and Store

Yeah, still waiting, won't be for a while yet. Once I get the other bike completed and on the road I'm going to start in on this one again. My plan is to get the ergonomics setup first (bars, rearsets) and then make some kind of exhaust to work/fit with it. If I can still use the stock headers I may go that route, but I don't think they'll work as the rearsets will be in the way.
 
Re: Deacon's 1972 CB350 Cafe Project

mockupWeb.jpg

[/quote]

That is a great graphic!
 
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