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Author Topic: CB350 cafe, a mix of old school & new  (Read 15744 times)

Offline seansmitty42

  • Posts: 40
    • One Shot Photography
Re: CB350 cafe, a mix of old school & new
« Reply #10 on: Jan 08, 2014, 12:48:50 »
Awesome build and sweet shop!

Offline VonYinzer

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Re: CB350 cafe, a mix of old school & new
« Reply #11 on: Jan 08, 2014, 13:10:42 »
Good to see someone putting in the extra effort to get the mods like this right. Keep it up.
Like a river that don't know where it's flowin'
I took a wrong turn and just kept goin'

Offline neevo

  • Posts: 2236
    • The blog of my custom CB400F build
Re: CB350 cafe, a mix of old school & new
« Reply #12 on: Jan 08, 2014, 17:33:33 »
Yeah I agree VonYinzer. I'm onboard just to perv at the engineering work going on.


See the condensed version of my full build on my blog!

Offline K4

  • Posts: 61
Re: CB350 cafe, a mix of old school & new
« Reply #13 on: Jan 08, 2014, 19:02:05 »
Thanks guys

More pics (forgot some...)
CBR600 rear sets - final supports are in the works




Center support


1" tubing was contoured and slid into position (very tight fit) - tacked in place


Lower end welded in place


If you look closely at the tubing you'll noticed some metal re-enforcement. The bolts where the air filters were will be tightened down, cut and welded in place. Will do this after frame is final welded.


Hope to have more updates next week.


Offline Rich Ard

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CB350 cafe, a mix of old school & new
« Reply #14 on: Jan 08, 2014, 19:09:13 »
Us too! Glad to see this coming together.
unplug the connectors from the harness and multimeter the shit out of them

Bad Points, a comic :: CB450 Restomod (sold) :: Viragostrosity :: GL1000 daily rider :: Kaw 175

Offline K4

  • Posts: 61
Re: CB350 cafe, a mix of old school & new
« Reply #15 on: Jan 09, 2014, 21:16:19 »
Outrigger supports. Left is removable, Right is welded in place. Additional strut bars installed.






« Last Edit: Jan 10, 2014, 09:40:41 by K4 »

Offline neevo

  • Posts: 2236
    • The blog of my custom CB400F build
Re: CB350 cafe, a mix of old school & new
« Reply #16 on: Jan 10, 2014, 00:30:28 »
Heavy duty! I imagine the frame flex should be minimised with all that lot!


See the condensed version of my full build on my blog!

Offline K4

  • Posts: 61
Re: CB350 cafe, a mix of old school & new
« Reply #17 on: Feb 10, 2014, 09:13:49 »
Overkill for sure...

Some updates

Been working on the frame, just about got it ready for powder coat. Refitted the engine shell with countershaft to align & take the offset measurement between the rear & front sprocket. My initial take was about 3/4". I was way off. Ended up at 34mm (about 1 5/16"). Three options. Two of which involved making an offset sprocket. The other was to extend the shaft out 34mm. I went with extending the shaft. Lots of research and homework went into this. Since I'm into cars too; many customs have cut & welded half shafts (drive shafts) successfully. There is some tricky spots, but here's my approach after consulting with Miller Welding, Alloy Metal Treating and multiple web sites.

-Purchased another counter shaft.
-Dropped both shafts off to be annealed
-Cut one shaft to the right length
-Threaded the shafts so they can be held together
-Beveled the edges for welding

I had .002" runout on the stock, original shaft. After welding; its at .003". The shaft is currently getting heat stressed (checks the welding and insures a good starting point for heat treating (60 durameter) finish. Heat treating may also "grow" the shaft, so we'll see how it turns out.

Here's a few shots before welding. I'll post more updates when I get the shaft back.
Oh...   some of my friends think this is a science experiment...  we'll see  :o







Going with a 525 chain versus the 530 (CBR swingarm sprocket will be kept stock, 525/45T). The 530 is wider than the 525, so had to come up with a way to turn a sprocket down. Ended up using the reminder of the cut off countershaft, welded on the collar for the seal, then trued the inner surface. Drill and tapped the end.



Another shot with the sprocket mounted & machined down on each side.


Made up a seat pan out of 16ga steel. Didn't have a big enough piece, so thought I'd try to join two together. Not real happy how it turned out. Too narrow by about 1/4", and the the seam in the middle was bugging me.


Went to the mill store (they're getting to know me by first name). Bought a piece of 18ga ($5), and formed the bends with a piece of pipe and angle iron resting in the V blocks of the press


Pic of the newer (2nd try) seat pan with the rear CB175 tank section. Still a lot to do to get this to work, but its coming along (shown before upper tubes get cut, which will bring seat/cowl forward about 3 1/2")

Offline Rich Ard

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CB350 cafe, a mix of old school & new
« Reply #18 on: Feb 10, 2014, 10:35:11 »
You blinded me with science.
unplug the connectors from the harness and multimeter the shit out of them

Bad Points, a comic :: CB450 Restomod (sold) :: Viragostrosity :: GL1000 daily rider :: Kaw 175

Offline K4

  • Posts: 61
Re: CB350 cafe, a mix of old school & new
« Reply #19 on: Mar 10, 2014, 10:15:07 »
You can't be...   we know you got a pretty good grasp on the science stuff ;)
--------------------------------------------------------------------------------

The weather & my procrastination have me about a month behind schedule :(

Some updates

Extended countershaft with bearing and collar pressed back on


Mounted in case with other gear cluster


Tray for the battery & electrical. Tacked in, just need to finalize and weld it it.




Decided to go another direction with the voltmeter. Ended using a small digital type in a piece of machined aluminum (pressed into triple tree). Not the best pic, but gives you an idea of what it'll look like.


Starting to mock things up.












Will need to increase the diameter of the stop bushing...  headlight brackets hit :?  :( 


Much more to do.