CB 750c

13249 Views 11 Replies 8 Participants Last post by TrialsRider, Mar 4, 2017

Pickinfights

Discussion Starter · Jul 26, 2014

I'd like to preface this with some facts.
I started this with the wrong bike, no knowledge, and low funding.
What I dislike and will change is the front forks and rear brake.
I'd like to say thanks for the hard truths I've descovered on this forum.
My dad and I had a lot of fun building it and learnd quite a bit building it.

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1 - 12 of 12 Posts

Witworth

· #2 · Jul 26, 2014 (Edited)

I think you've done a reasonable job, with the bike you had.

Learn to live with the rear brake and the forks. It would be better to get a real fork brace and a set of quality shocks like gas-charged Progressives or Hagons. A set of shocks 3/4 to 1 inch longer would improve the look and the handling (from what I can work out by looking at the bike in the images, that is).

It looks good. You even have carbs that work with pods, so you are in elite company.

Danger, is my business.

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hillsy

· #3 · Jul 26, 2014

Pickinfights said:
My dad and I had a lot of fun building it and learnd quite a bit building it.

I don't know if you can put a price on this ^^^^^

Good on you both.

BTW - how does the bike run with the carbs / filter set-up you have on there?

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Pickinfights

Discussion Starter · #4 · Jul 26, 2014

Thanks for the suspension input.
Carbs work well. It'll go to a speed shop to get tuned properly.

There is some vibration from the rear end. Probably the enormous tire I put on it.
Any suggestions for that?

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KeninIowa

· #5 · Jul 26, 2014

Pickinfights said:
There is some vibration from the rear end. Probably the enormous tire I put on it.
Any suggestions for that?

You had it balanced right?

How enormous is it? You can go a little too big for the wheel and not cause a problem. At some point it wobbers the profile too much and becomes a problem. While your tire is new and the profile round it won't ride too bad. When the profile flattens from wear it may start to steer heavier.

Other than that how were the wheel/swingarm bearings when you had it apart?

Have you aligned the rear wheel? Like with a tape measure, not relying on the marks on the swingarm.

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Diamondj

· #6 · Jul 26, 2014

Pickinfights said:
View attachment 8381

Is this a home built powder coat oven? If so could you post more details?

As for the rear vibration, did you replace the swing arm bushings when you had the bike apart?

Jim

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Witworth

· #7 · Jul 26, 2014

The vibes from the rear could be worn out trashed shocks, or that the tire is out of round or out of balance. Big road bike tires really need to balanced. If you can rock the wheel back and forth, like sideways, that pretty much means the swingarm bushes need attention.

The rear tire does look too big, functionally wise, not looks wise. The OEM size would be the one to fit. Remember, the cheapest tires ride like the cheapest tires. Better to sell a near-new tire at a small loss, than have to ride it, when it does not work the best.

I've be refitting the stock chain guard, after polishing it up. Chain crud is a pain.

If you get the carbs tuned, get the valve shims all checked and adjusted to spec before you do. If you don't get them tuned with a guy who has a Dynojet dyno, and Jap bike or Jap bike drag racing experience, keep looking. What I'm saying is, avoid Harley guys.

You may well end up with the only functional "open triangle" café racer, within a 500 mile radius of the Great Lakes.

Danger, is my business.

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Pickinfights

Discussion Starter · #8 · Jul 26, 2014

Yes the tire was balanced. The swing arm bushings were good (no slop or play).
I like the idea of using a tape measure for alignment, because I did just use the marks.
The bike was bought by an old guy from the dealer in 81. He then took amazing care of it. So it was in pretty good shape.

Yes home made oven. Took a large steel locker, wrapped it with insulation, self taped some spacers, then used left over roof steel and mounted it to the spacers. We used the internals from an old oven and mounted the elements to the floor, wired it up so both come on with bake.
Then Set it and forget it! All the powder coating has worked slick as shit.

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Earlysport

· #9 · Aug 1, 2014 (Edited)

I like what you've done - nice work. I have a thing for black and brown bikes too.

You're also motivating me to build my own powder coat oven too. What temp do you get to inside, and how hot does the exterior get?

Cheers,

Earlysport

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Pickinfights

Discussion Starter · #10 · Aug 21, 2014

Preheat to 450 (takes about 10 min) bake parts till glossy, then bake another 20 min, let cool and enjoy!
The outside gets Luke warm. Except the handle (oven mitts).

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o1marc

· #11 · Mar 3, 2017

Diamondj said:
Is this a home built powder coat oven? If so could you post more details?

As for the rear vibration, did you replace the swing arm bushings when you had the bike apart?

Jim

I wouldn't take any powder coating advise from here, he's doing it all wrong. Times and temps are critical and he's using the wrong ones. Just because a part looks good when it comes out of the oven, it's a completely different story to coat a part that will have durability for years. Had to laugh when he posted the pic of the oven and claimed he saved $15K. $15k will get you a full propane powered 10' x 20' oven. My professional built oven (4' x 4' x 6') is normally $3k, but I got a dented floor model for $1K. This oven is worth about $300.
If you want advice on powder ovens get it from a knowledgable source.
Try here:
Powder365.com ? View forum - OVENS AND SPRAY BOOTHS

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TrialsRider

· #12 · Mar 4, 2017 (Edited)

o1marc said:
... it's a completely different story to coat a part that will have durability for years...

He painted it in the summer of 2014, if he's still alive maybe we can just ask him.

Hey Pickinfights, hows the paint holding out?

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