Author Topic: 73-75 Denvers choppers CB750 period correct build thread  (Read 26743 times)

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Offline Sgt.Pinback

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #100 on: March 30, 2018, 01:48:29 PM »
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Offline Ichiban 4

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #101 on: March 30, 2018, 08:35:50 PM »
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Yeah..as usual..great stuff Lxcoupe..

Ichi
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Present: '77 550K
Past: '73 CB450(twin), '72 CB175, '68 CB350, '58 Ariel Square 4 (1000cc), '58 Matchless Typhoon (650cc single), Whizzer Motorbikes '48 -'55 (Pacemaker & Sportsman)..Vespa, Lambretta scooters..etc.

Offline lxcoupe89

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #102 on: April 03, 2018, 08:33:26 AM »

Offline DV Red Herring

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #103 on: April 03, 2018, 01:19:08 PM »
Awesome craigslist find. Just proof that good stuff is still out there. You definitely got your ducks in a row on this build. My next build will be something like this. I'll be watching how yours turns out for sure.

Offline lxcoupe89

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #104 on: April 04, 2018, 09:48:34 AM »
Awesome craigslist find. Just proof that good stuff is still out there. You definitely got your ducks in a row on this build. My next build will be something like this. I'll be watching how yours turns out for sure.

Thanks, its time consuming, but fun when I get a chance to work on it

Offline Medyo Bastos

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #105 on: April 04, 2018, 12:28:38 PM »
when you get time to work on it?  what are you waiting for you, get busy!

Offline lxcoupe89

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #106 on: April 18, 2018, 09:45:25 AM »
when you get time to work on it?  what are you waiting for you, get busy!

HaHa, spring time is a busy time progress will be slow for a while

Offline bbsbase

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #107 on: October 07, 2018, 06:33:38 AM »
Spring time is over. Please start working again  :D

Offline lxcoupe89

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #108 on: November 13, 2018, 10:05:42 AM »
I didn't have a chance to work on it all summer but its back up on the lift and ready to be wired. I got it outside for some pictures this summer.





Offline lxcoupe89

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #109 on: November 13, 2018, 10:09:23 AM »
I also scored a nice set of Honda Hallcraft Satellites. Might change to them in the future.





Offline bbsbase

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #110 on: November 20, 2018, 08:56:18 AM »
Hello lxcoupe89, nice to see that you have your hands on the bike again. I think the Hallcraft Satelites will give the bike a nice early 80th touch.

Offline WhyNot2

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #111 on: November 20, 2018, 09:51:39 AM »
What will you do with the other wheels?

Possibly interested in them if you decide to rid yourself of them.

Great looking bike, too.
If it ain't raining, I'm riding.....~~{iii}?~~prost

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Offline lxcoupe89

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #112 on: January 07, 2019, 09:34:32 AM »
Hello lxcoupe89, nice to see that you have your hands on the bike again. I think the Hallcraft Satelites will give the bike a nice early 80th touch.

Yes I'm finally back to work on it again, making some progress the last few weeks

Offline lxcoupe89

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #113 on: January 07, 2019, 09:35:39 AM »
What will you do with the other wheels?

Possibly interested in them if you decide to rid yourself of them.

Great looking bike, too.

Sorry I don't have any plans to sell the invaders, but if I do I'll try to remember to let you know.

Offline lxcoupe89

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #114 on: January 07, 2019, 09:53:44 AM »
Back to working on the Honda chopper again, Finally got the bike wired up, now I'm working on getting the fuel to it. It took a couple weeks to get the bike wired. I still need to make foot pegs and a battery box.






























Offline lxcoupe89

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #115 on: January 07, 2019, 10:24:22 AM »

I found out that the Bowl drain nipples hit the Santee box, I'm going to use the nipples to check the gas level in the bowls using the clear tubing, then I'll cut the nipples off for clearance. I also realized that there aren't any extended throttle cables available for 77-78 carbs so I'm going to have to make my own throttle cable. I'm planning to buy the stuff from Flanders.

I really want to keep this thing as clean as possible and now I'm trying to figure out how to actuate the choke on the carb and not use a Choke Cable. I appreciate any advice you can give to help solve that problem.

While searching I found this thread which was a good one:
http://forums.sohc4.net/index.php?topic=158068.0








Offline lxcoupe89

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #116 on: January 07, 2019, 10:26:55 AM »
I also made oil lines but forgot to take pictures so I'll have to take some to post. Here is how the bike sits currently




Offline 754

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #117 on: January 08, 2019, 07:55:07 PM »
 I got a 78 F with that electric box, looks like they cut and plugged the drains on it !
Cut down the choke cable and mou t it by your oil tank of electric box.

 Or easier, go to earlier carbs, solve 2 problems..
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline lxcoupe89

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #118 on: January 09, 2019, 08:21:35 AM »
I got a 78 F with that electric box, looks like they cut and plugged the drains on it !
Cut down the choke cable and mou t it by your oil tank of electric box.

 Or easier, go to earlier carbs, solve 2 problems..

Thanks for the info, I guess i'll get a cable for now, maybe i'll try to come up with something cleaner for the choke later on.

Offline Gurp

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #119 on: January 09, 2019, 07:42:24 PM »
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Offline 754

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #120 on: January 09, 2019, 08:36:42 PM »
 Iam suspecting that they could be tapped maybe to 1/16 NPTm and maybe you could put 90 degree hoses barbs on..
 I do know they are used on nitrous nozzles, its where I got the idea.,
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline lxcoupe89

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #121 on: January 17, 2019, 01:02:36 PM »
Iam suspecting that they could be tapped maybe to 1/16 NPTm and maybe you could put 90 degree hoses barbs on..
 I do know they are used on nitrous nozzles, its where I got the idea.,

I'll check into it, I was wondering if there were any elbows that may fit. The biggest thing is that if I plug them I lose the overflow drain so if the bowl needle sticks the gas could fill the motor. The bowl vent may be low enough as a drain, not sure.

Offline PeWe

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #122 on: January 17, 2019, 09:08:04 PM »
It look like the charging regulator will become rather hot and in that case not good to have wires on top of it in that closed box.
I should have that regulator outside with the fins aimed so the wind will cool it while driving. Fins aimed from front to back of the bike for best cooling.
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline 754

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #123 on: January 17, 2019, 11:18:48 PM »
These and a 1/16 npt tap might work  I have to look at a bowl..
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline lxcoupe89

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Re: 73-75 Denvers choppers CB750 period correct build thread
« Reply #124 on: January 22, 2019, 05:31:04 AM »
It look like the charging regulator will become rather hot and in that case not good to have wires on top of it in that closed box.
I should have that regulator outside with the fins aimed so the wind will cool it while driving. Fins aimed from front to back of the bike for best cooling.

I am planning to keep an eye on it to see how hot stuff gets in there. Thanks for the advice.