Author Topic: CB750 K4 Build - The Cafe Tracer (Read 118778 times)

budman · « **Reply #225 on:** February 21, 2016, 07:58:01 PM »

Quote from: Stev-o on February 21, 2016, 07:23:51 PM

WooHoo!

You betcha. Now that I've gotten this far I'm going to jump over to the engine for a while. First thing to do is design some brackets and have them cut at work to support the engine so I can put it on my engine stand.

mrbreeze · « **Reply #226 on:** February 21, 2016, 08:32:38 PM »

That sounds like a good first thing to do Bud. I have yet to have my engine out but I know from working on car engines that a stand is the way to go for most of the rebuilding process. I'm doing top end work on mine right now but cut the frame rails for access. I'm working out a project right now (half in my head and the other half gathering parts & materials) to make removing the engine like lifting and pushing a wheelbarrow. Once I put that plan into action I will do like you and make a jig to hang it on an engine stand.

budman · « **Reply #227 on:** February 22, 2016, 07:50:41 AM »

Sounds interesting. Let us know what you come up with.

I have access to a plasma cutting table so I can get the brackets to pretty much match the frame.

budman · « **Reply #228 on:** February 22, 2016, 01:04:59 PM »

I've been working on these tank logos for a long time. I think I have finally come up with something I like. Something that says "HONDA", but in a different way. I'm going to have them made into decals and then clear coat over them once they're on the tank.

przjohn · « **Reply #229 on:** February 22, 2016, 01:45:41 PM »

Quote from: budman on February 21, 2016, 06:27:49 PM

She's a roller!

Congrats on the roller!! Always a nice milestone in a build. Looks like your project is coming along very well, keep up the good work.

budman · « **Reply #230 on:** February 22, 2016, 05:13:51 PM »

Quote from: przjohn on February 22, 2016, 01:45:41 PM

Congrats on the roller!! Always a nice milestone in a build. Looks like your project is coming along very well, keep up the good work.

Thanks. Having a blast. Taking it slow.

mrbreeze · « **Reply #231 on:** February 22, 2016, 08:03:17 PM »

Taking it slow is the way I prefer. I always crack up on the reality shows where they have to meet a deadline. All the unnecessary stress for all involved. Things really go smoother when you take baby steps on any project.

budman · « **Reply #232 on:** February 23, 2016, 07:15:30 AM »

There's a lot of reasons for me to take things slowly...finances, time, family, a job, this is my first CB750 build, all the mods I've made and...I'm not as young as I used to be.

budman · « **Reply #233 on:** February 24, 2016, 12:27:43 PM »

I designed these brackets to bolt up the backing plate on my engine stand. They should also work as a bench top engine stand by themselves. Waiting on them to be cut out downstairs. I'll use some 3/8" sch40 pipe for the spacers so the brackets aren't right up against the engine.

budman · « **Reply #234 on:** February 24, 2016, 02:33:32 PM »

Just need to bend them.

mystic_1 · « **Reply #235 on:** February 24, 2016, 06:17:01 PM »

Say, you may have already thought of this, but once you have the top end off of the motor, you need to invert it in order to unbolt the crankcase halves, and then lift the bottom of the case off, leaving most of the internals in the top half of the crankcase.

I've never seen anyone design an engine stand adapter that allows this to happen, since most people support the motor from the lower mounting bolts. On the bench you just rest the cases at an angle supported by the upper rear mounting bolt boss at the rear, and the top of the studs at the front. This actually puts things at a convenient angle for working on, too, imho.

Anyway, i do like your bracket design, you could probably run the motor on the stand with those things and do your initial setup and re-torquing on the stand before dropping the motor back into the frame. Wish I had access to a waterjet!

mystic_1

budman · « **Reply #236 on:** February 24, 2016, 07:14:22 PM »

I haven't thought of any of that. I've never cracked open a CB750 engine and haven't gotten that far in the manuals. I just wanted something stable that I could paint around.

The brackets were cut on a plasma table.

Bootsey · « **Reply #237 on:** February 24, 2016, 07:37:16 PM »

That is one damn fine looking roller, nice work!

budman · « **Reply #238 on:** February 25, 2016, 05:53:00 AM »

Quote from: Bootsey on February 24, 2016, 07:37:16 PM

That is one damn fine looking roller, nice work!

Thanks.

mystic_1 · « **Reply #239 on:** February 25, 2016, 06:12:50 AM »

Quote from: budman on February 24, 2016, 07:14:22 PM

The brackets were cut on a plasma table.

Mmm even better, the idea of using the "fourth state of matter" (the things stars are made of) to cut and shape steel (iron is created inside stars) has always seemed poetic to me.

Do you know which paint you'll be using yet? Got a color scheme in mind for the tins yet? I assume rally stripes of some kind to go along with the seat cowl.

mystic_1

budman · « **Reply #240 on:** February 25, 2016, 06:52:58 AM »

Quote from: mystic_1 on February 25, 2016, 06:12:50 AM

Do you know which paint you'll be using yet? Got a color scheme in mind for the tins yet? I assume rally stripes of some kind to go along with the seat cowl.

The tank will be Toyota Sunset Bronze Mica. The stripes will be a light tan color to match the stripes on the seat cowl. I'll also have the logos I designed on the sides of the tank buried under the clear. It will take several rounds of spraying clear coat and sanding to fill in the wood grain on seat cowl. In between rounds of clear I think I'm going to mask off the stripes and dust the walnut with some thinned down Bronze paint to mimic the shimmer the tank will have. Not too much. I want the wood grain to show through. It won't be an exact match to the tank, but it should still look cool.

budman · « **Reply #241 on:** February 27, 2016, 12:27:17 PM »

All I need now is another pair of arms and another back.

mystic_1 · « **Reply #242 on:** February 27, 2016, 05:00:14 PM »

Nice, you could sell those.

Oh hey, I bet if you ever did need to, you could unbolt the bottom and pivot the motor onto it's back, and it looks like the studs would land somewhere in the vicinity of the engine stand connection, so you probably COULD rebuild the bottom end in that stand, just make up a little rest for the studs to land on.

mystic_1

budman · « **Reply #243 on:** February 28, 2016, 07:32:15 AM »

I was talking to a friend about that. It would need a little more R&D. I designed these brackets to fit my el cheapo Harbor Freight stand. There's a bunch of different style stands out there. Would probably have to include adapters.

SOHC4 Cafe Racer Fan · « **Reply #244 on:** February 28, 2016, 07:42:01 AM »

Considering MANY of us have the El Cheapo Harbor Freight stand, that's a good idea. You could just focus on that model.

budman · « **Reply #245 on:** February 28, 2016, 12:41:20 PM »

With the help of my teenage son we were able to mount the engine on the stand. Feels pretty stable. I might start tearing it down a little bit later on.

SOHC4 Cafe Racer Fan · « **Reply #246 on:** February 28, 2016, 07:47:47 PM »

Crank those mounts out for your fellow members and make some money for parts.

mystic_1 · « **Reply #247 on:** February 28, 2016, 07:52:19 PM »

^^^
This

Looking good. I'm wondering though if you couldn't skip the lower front mount and just hang the motor from the upper and lower rear mounts. Would save you a lot of material, and I think I've seen other people do it that way before.

Your current design, though, would also double as a bench stand.

Just some random thoughts.

mystic_1

budman · « **Reply #248 on:** February 28, 2016, 08:41:34 PM »

Quote from: mystic_1 on February 28, 2016, 07:52:19 PM

^^^
This

Looking good. I'm wondering though if you couldn't skip the lower front mount and just hang the motor from the upper and lower rear mounts. Would save you a lot of material, and I think I've seen other people do it that way before.

Your current design, though, would also double as a bench stand.

Just some random thoughts.

mystic_1

I've seen other rear mount versions others came up with and it just seemed to me there was a lot of stress there. I mentioned in post #233 that my brackets could be used as a bench to stand.

budman · « **Reply #249 on:** February 28, 2016, 08:50:27 PM »

Quote from: CB750 Cafe Racer Fan on February 28, 2016, 07:47:47 PM

Crank those mounts out for your fellow members and make some money for parts.

I have a spare set. One of the hole slots is off on one of them. It can be drilled or reamed out and welded back up so it'll work. The other bracket has an ugly slot, but it should still work. If you want it you can have it if you cover the shipping. You would have to cut your own spacers.

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Author Topic: CB750 K4 Build - The Cafe Tracer (Read 118778 times)