Author Topic: My 1975 cb 750 Build (Read 17303 times)

PPG9944 · « **Reply #75 on:** May 17, 2015, 08:16:33 PM »

So it's been a while. But progress has been made!

Cut and welded up the battery box to accept a wider AGM battery. Still gotta do some final fitting but I think it'll work.

A shorter, wider battery will then allow me to utilize that space to relocate some electronic components. I'm thinking about making some sort of hinged electronics tray but that is yet to be determined.

Also, picked up my rims from the powdercoater and laced up the front wheel. The rear wheel will get done sometime this week and then I'll have to true these things up.

And front wheel laced!

PPG9944 · « **Reply #76 on:** June 09, 2015, 07:39:01 PM »

Some progress.

Got the wheels assembled and tires mounted. The new rear tire is so damn skinny haha not sure how i feel about it yet. The rear tire that was on this thing was fat as hell. I kinda liked that look so we'll see what happens in the future.

I tossed on the little rear fender. I'm not sure I'm diggin it. Also I think I'm gonna have to drop the front end internally a little bit

SOHC4 Cafe Racer Fan · « **Reply #77 on:** June 09, 2015, 08:28:37 PM »

I kind of like the back tire especially with the semi-nobbies.

New seat? I thought you were going with shaping your own with foam and fiberglass.

PPG9944 · « **Reply #78 on:** June 09, 2015, 08:31:34 PM »

That is the seat that I made and shaped. I'm sure I posted a picture before I got it upholstered. Im still planning on making a removable seat cowl out of fiberglass.

SOHC4 Cafe Racer Fan · « **Reply #79 on:** June 09, 2015, 09:15:50 PM »

Quote from: PPG9944 on June 09, 2015, 08:31:34 PM

That is the seat that I made and shaped. I'm sure I posted a picture before I got it upholstered. Im still planning on making a removable seat cowl out of fiberglass.

Gotcha. It was the cowl I was thinking of.

PPG9944 · « **Reply #80 on:** June 29, 2015, 05:57:55 AM »

Couple of updates here. Figured out how the side bag is going to be mounted and I'm very pleased. All i had to do was use 2 clamps. Cut a strip of aluminum and then cut a few holes and hook up the hardware. This thing can still be used as a tank bra in the future.

Went to the swap meet and got this for a really good price. The super sport oil tank looks a lot better I think with this gas tank. As far is I know this oil tank doesn't have the vent to hook up to the valve cover so I'll have to go get a little breather filter and hook up some hose to that.

Gonna need to refab some mounting points to make this work.

Going to try and get to the fiberglass work this afternoon.

PPG9944 · « **Reply #81 on:** June 29, 2015, 08:25:05 PM »

Fiberglass round 1

PPG9944 · « **Reply #82 on:** July 20, 2015, 12:35:25 PM »

Got a fender off a suzuki gs 550 and mounted it on the front. Still need to massage and grind the fender brackets to line up the fender better but major progress. I've been struggling with ideas for a while.

The fiberglass seat cowl still needs A LOT of body work and sanding. Not something I'm in the mood for right now.

PPG9944 · « **Reply #83 on:** August 01, 2015, 04:48:28 AM »

Motor is back in the frame. Mocked up a few parts. Still plenty of work to do but it's slowly getting there.

PPG9944 · « **Reply #84 on:** August 12, 2015, 07:11:05 PM »

Getting on with getting the electrical components mocked up before I get at wiring this whole monster. I may or may not be putting it off slightly because I have no idea what I'm doing but oh well.

Got the front turn signals mounted. Stock Honda CB stems with stock honda CB turn signals. I think it keeps everything nice tight and narrow.

.

Also.... this showed up!

..and mounted. Still gonna mess around with depth and angle but I think it looks pretty clean.

SOHC4 Cafe Racer Fan · « **Reply #85 on:** August 12, 2015, 09:02:21 PM »

Love that Koso TNT gauge. I've got my eye on one for my next 550/650 build.

PPG9944 · « **Reply #86 on:** August 13, 2015, 04:26:14 AM »

Quote from: CB750 Cafe Racer Fan on August 12, 2015, 09:02:21 PM

Love that Koso TNT gauge. I've got my eye on one for my next 550/650 build.

I've heard that the tach can be a pain to wire up but I guess I'll find out for myself.

Still need to mount the ignition coils and rear running/ stop lights and then start building the electrical system.

calj737 · « **Reply #87 on:** August 13, 2015, 04:54:54 AM »

Quote from: PPG9944 on August 13, 2015, 04:26:14 AM

I've heard that the tach can be a pain to wire up but I guess I'll find out for myself.

Shouldn't be, I suspect it pulls a signal straight from the coils using the ignition wires?

evanphi · « **Reply #88 on:** August 13, 2015, 08:09:39 AM »

Quote from: PPG9944 on August 13, 2015, 04:26:14 AM

Quote from: CB750 Cafe Racer Fan on August 12, 2015, 09:02:21 PM
Love that Koso TNT gauge. I've got my eye on one for my next 550/650 build.

I've heard that the tach can be a pain to wire up but I guess I'll find out for myself.

Still need to mount the ignition coils and rear running/ stop lights and then start building the electrical system.

Usually they are fired off the signal from the points. Very easy to wire up.

PPG9944 · « **Reply #89 on:** August 17, 2015, 07:06:10 PM »

Quote from: evanphi on August 13, 2015, 08:09:39 AM

Quote from: PPG9944 on August 13, 2015, 04:26:14 AM
Quote from: CB750 Cafe Racer Fan on August 12, 2015, 09:02:21 PM
Love that Koso TNT gauge. I've got my eye on one for my next 550/650 build.

I've heard that the tach can be a pain to wire up but I guess I'll find out for myself.

Still need to mount the ignition coils and rear running/ stop lights and then start building the electrical system.

Usually they are fired off the signal from the points. Very easy to wire up.

I am hoping that is the case. Im running coils off a 2001 Honda magna. Still need to be mounted up but Im getting close to being able to start wiring the bike.

PPG9944 · « **Reply #90 on:** August 17, 2015, 07:07:06 PM »

Also got this little win today. Mounted up the fuse box off the 2001 honda magna. This should work nicely.

evanphi · « **Reply #91 on:** August 18, 2015, 07:23:13 AM »

Are you using a magnet for the speedometer? Or are you using a cable/sensor off the original hub-mounted speedo drive?

If the latter, check out the link in my sig for how to calculate the input circumference!

PPG9944 · « **Reply #92 on:** August 18, 2015, 07:41:20 PM »

Quote from: evanphi on August 18, 2015, 07:23:13 AM

Are you using a magnet for the speedometer? Or are you using a cable/sensor off the original hub-mounted speedo drive?

If the latter, check out the link in my sig for how to calculate the input circumference!

Right on sir! I'll have to definitely cross that bridge once I get to it.

I mounted my horn tonight underneath the oil cooler. I'm hoping the oil cooler will not generate too much heat to bother the horn.

PPG9944 · « **Reply #93 on:** August 22, 2015, 03:35:45 PM »

This stupidly simple solution took entirely way too long to figure out. BUT, I now have coils with interchangeable wires and new Spark plug caps!

Gonna go pick up some mirrors soon and then the spacing of that will determine where i mount my start button and kill switch.

PPG9944 · « **Reply #94 on:** August 25, 2015, 07:03:38 PM »

I like version 2 a lot more. Rubber stopper ground down with this little flange nut that has these locking teeth

And mounted

As it stands the left handlebar is going to be slightly longer than the right side but the mirror clears the lever so I'm ok with it.

PPG9944 · « **Reply #95 on:** August 30, 2015, 08:28:18 PM »

Got a couple of things done today. I think this tail light is almost buttoned up. Just gotta conceal the rear wires somehow. I picked up some LED light at autozone and but out the red lens and then glued it to a 52mm clear filter for the lens.

Got a starter switch off a kawasaki Ninja. Fits perfect between the throttle and master cylinder perch.

Decided to paint the brake rotor carriers before I started messing around with wheel spacer and brake shim redo. This will make the front end look a little heavier and more awesome! Used gloss black engine paint that withstands temps up to like 500 degrees something

calj737 · « **Reply #96 on:** August 31, 2015, 05:23:52 AM »

Did you just bolt the rotor to the carrier? If so, I hope you used Grade 8 or better hardware to do so. I would not rely on run of the mill steel socket heads (or even Stainless) for that task. Those bolts are subject to some pretty serious shear force and stainless or mild steel is not rated for that.

PPG9944 · « **Reply #97 on:** August 31, 2015, 04:38:04 PM »

Calj,

I've read up on these rotors from other folks who run these rotors on race bikes. I feel confident in the structural integrity of these rotors.

SOHC4 Cafe Racer Fan · « **Reply #98 on:** August 31, 2015, 04:46:21 PM »

PPG9944,

Cal was referring to the bolts that connect the rotor to the carrier (not the rotor assembly to the hub or the rotor itself). His concern was whether you were using a strong enough bolt to mount the drilled rotor to the carrier -- so that shearing forces do not cause the rotor to come loose.

PPG9944 · « **Reply #99 on:** August 31, 2015, 05:06:39 PM »

Quote from: CB750 Cafe Racer Fan on August 31, 2015, 04:46:21 PM

PPG9944,

Cal was referring to the bolts that connect the rotor to the carrier (not the rotor assembly to the hub or the rotor itself). His concern was whether you were using a strong enough bolt to mount the drilled rotor to the carrier -- so that shearing forces do not cause the rotor to come loose.

Right, I understood that, but yea I still feel good about it.

News:

Author Topic: My 1975 cb 750 Build (Read 17303 times)