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Author Topic: CB750 K3F - AKA The Red  (Read 118573 times)

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Offline 70CB750

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Re: CB750 K3F
« Reply #300 on: January 29, 2015, 03:57:38 AM »
The table saw is blocking her in, I have to get her out before I put handlebars on.  Oh well :)
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Offline MoMo

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Re: CB750 K3F
« Reply #301 on: January 29, 2015, 06:10:33 PM »
Is the loose floor  board a booby trap Prokop?
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Offline 70CB750

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Re: CB750 K3F
« Reply #302 on: January 30, 2015, 04:03:27 AM »
Quote from: MoMo on January 29, 2015, 06:10:33 PM
Is the loose floor  board a booby trap Prokop?

That's a memorial to my stupidity.  ;D I made the floor from old deck boards spaced inch or so apart.    I keep loosing parts all the time under it, but every so often I drop something really important and cut a hole to retrieve it.

I don't know what I was thinking back in the day  ;)
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Offline 70CB750

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Re: CB750 K3F
« Reply #303 on: February 10, 2015, 10:35:38 AM »
The time has come



to invest in a battery and finish wiring.
« Last Edit: February 10, 2015, 10:39:55 AM by 70CB750 »
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Offline SOHC4 Cafe Racer Fan

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Re: CB750 K3F
« Reply #304 on: February 10, 2015, 06:33:30 PM »
Never heard of Motobatt.  Is it a gel/sealed battery? 

I've become a big fan of Shorai lithium ion batteries.
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Offline 70CB750

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Re: CB750 K3F
« Reply #305 on: February 10, 2015, 06:36:03 PM »
I have one in the K0 since 2011 going strong. 4 posts too, AGM.
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Offline Stev-o

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Re: CB750 K3F
« Reply #306 on: February 10, 2015, 07:15:02 PM »
I recently put a Motobat in my H1, good battery.   Like everything about it but the color.
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Offline 70CB750

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Re: CB750 K3F
« Reply #307 on: February 12, 2015, 04:37:35 AM »
Finished seat.  Under the cover is a block built out of rebonded urethane foam - aka carpet padding - with softer middle for the tail bone.

I expect great things from this seat, it sure took a long time to build.
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Offline 70CB750

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Re: CB750 K3F
« Reply #308 on: February 12, 2015, 04:39:01 AM »
Muffler mock up.  The connector has to be ceracoated or something or high temp paint at minimum.
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Offline calj737

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Re: CB750 K3F
« Reply #309 on: February 12, 2015, 04:58:26 AM »
Will you install some type of hangar at the muffler to keep it from contacting the foot peg, and to support the weight?
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Offline 70CB750

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Re: CB750 K3F
« Reply #310 on: February 12, 2015, 05:01:35 AM »
Quote from: calj737 on February 12, 2015, 04:58:26 AM
Will you install some type of hangar at the muffler to keep it from contacting the foot peg, and to support the weight?

If I want to keep the muffler, I will have to  ;D

Found a local shop that will weld a bracket on it for me.
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Offline 70CB750

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Re: CB750 K3F
« Reply #311 on: February 26, 2015, 04:01:30 AM »
Doing little jobs, the weather is unfriendly.  Gas cap latch from 6061 billet, sure looks better that the cap.
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Offline 70CB750

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Re: CB750 K3F
« Reply #312 on: February 26, 2015, 04:02:13 AM »
Bracket to be welded on the muffler from 16g 304.
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Offline MoMo

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Re: CB750 K3F
« Reply #313 on: February 26, 2015, 04:13:33 AM »
Nice latch Prokop,  you could probably make a few bucks selling them.  Hope all is well in frigid VA....Larry
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Offline 70CB750

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Re: CB750 K3F
« Reply #314 on: February 26, 2015, 04:15:31 AM »
Thank you, Larry:)

We are getting snow again, sure hope this is the last time, I am ready for the spring.

How are you holding up, sir?
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Offline MoMo

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Re: CB750 K3F
« Reply #315 on: February 26, 2015, 10:18:11 AM »
frigid here as always this year Prokop-I don't think the temp has risen over 40.  Started snowing today but the sun is bright and shiny now.  Later today I am to meet my daughter's birth mother for the first time since we brought her home from the hospital 23 years ago.  Should be quite interesting to say the least...Larry
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Offline mystic_1

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Re: CB750 K3F
« Reply #316 on: February 26, 2015, 10:36:00 AM »
Quote from: MoMo on February 26, 2015, 04:13:33 AM
Nice latch Prokop,  you could probably make a few bucks selling them.


+1 this was my immediate first thought on seeing your latch.  Well done!

mystic_1
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Offline 70CB750

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Re: CB750 K3F
« Reply #317 on: February 26, 2015, 01:06:56 PM »
Thank you, gents:). I am a prototype man, never able to produce for profit.

Sounds interesting, Larry, I am sure you will do just fine:)
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Offline 70CB750

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Re: CB750 K3F
« Reply #318 on: March 18, 2015, 03:08:43 AM »
Assembly slowly continues, I had to take right control off and solder back wire to the Start button, better now than later.

The only major job is to finish the wiring harness and connect it all in the headlight bucket, I will need few gallons of beer for that.
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Offline 70CB750

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Re: CB750 K3F
« Reply #319 on: April 05, 2015, 10:03:46 AM »
I sorted out the harness, it all works now.

Made a change too, when key is in P(ark) position, only the tailight and headlight is on, the dash is off. It seemed a good idea :)

Also checked for spark with timing light; good across the board.
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Offline 70CB750

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Re: CB750 K3F
« Reply #320 on: April 21, 2015, 06:44:12 PM »
The F3 engine came with 657A caburetors, for rebuilt I bought kits with 40 pilot and 120 main jets.

She started right away and  idles beautifully right from the beginning, Pamco with stock airbox is a powerful combination.

But with needle in third position she would not move, I opened the throttle and she promptly fell on her face. Spark plug white like snow.

Needle in 4th position she would move some, but still felt weak.

Today I moved the needle all the way to the bottom and she finally woke up. Every needle change meant taking out airbox and the whole carb rack - compare to this, the K0 is amazingly easy as far as setting needles.

I remember from somewhere, needle notch is about 1.5 in jet size, means she is now running 126 or so jet.  She feels good, but future will show if 125 jets are needed.

She still has shifting problems, nothing but 1 and 2 on the road, with the cover off I can shift up to 5. Puzzled:(
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Offline 70CB750

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Re: CB750 K3F
« Reply #321 on: April 22, 2015, 04:18:33 AM »
Synchronizing carburetors.

"Yes, honey, the tiller is still broken, I am working on it, the fuel tank needs some attention."  ;D ;D

I rigged this up to be able take her on the road with access to carburetors and to protect the painted tank.
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Offline Stev-o

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Re: CB750 K3F
« Reply #322 on: April 22, 2015, 02:53:56 PM »
Looks good, matches the side cover!
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Offline seanbarney41

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Re: CB750 K3F
« Reply #323 on: April 22, 2015, 03:18:58 PM »
Prokop, you do realize that carb sync only needs to be done at idle, right? ;D
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Offline 70CB750

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Re: CB750 K3F
« Reply #324 on: April 22, 2015, 03:21:48 PM »
Yes, the picture is misleading. Vacuum gauges were the final job.
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