Author Topic: First serious build ever - CB750 K7 Café  (Read 25137 times)

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Offline SOHC4 Cafe Racer Fan

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Re: First serious build ever - CB750 K7 Café
« Reply #125 on: January 05, 2017, 09:55:06 AM »
Thanks, Oscar!
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline cb750tr

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Re: First serious build ever - CB750 K7 Café
« Reply #126 on: January 05, 2017, 10:09:10 AM »

Offline calj737

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Re: First serious build ever - CB750 K7 Café
« Reply #127 on: January 05, 2017, 10:40:21 AM »

I ordered their new unit, that comes with a Bluetooth connection to enable the ignition button as far as the motorcycle is in range. So, I won't bother with an M-Lock :)
Huh?
They've got a new M-unit soon launching, with Bluetooth built in. It comes with some new nifty functions, tracking distances, turning on / off the alarms and getting logs etc. But the best part for myself was using your smartphone instead of the key. Even if you've got an ignition lock, you can use the phone without needing the key (if I understood it correct).

Any details on this new version of the M-Unit from a website, email or other source.  Sounds interesting, but I haven't seen anything about it on the Interwebs.
I'll send you a PM!
I'd be interested in this too
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
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"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline cb750tr

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Re: First serious build ever - CB750 K7 Café
« Reply #128 on: January 10, 2017, 12:46:11 AM »
Can't decide whether to upgrade the rectifier / regulator. I know that people are saying that there is no reason if the original units aren't broken (which mine aren't), but again - I'm replacing just about everything on this bike so it feels silly to leave these units.

What do you guys say?

Offline calj737

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Re: First serious build ever - CB750 K7 Café
« Reply #129 on: January 10, 2017, 03:29:35 AM »
Rick's product has been my preferred unit. For another $105, you eliminate a 40 year old, albeit still probably good, piece of critical electrics.
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline cb750tr

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Re: First serious build ever - CB750 K7 Café
« Reply #130 on: January 10, 2017, 03:32:02 AM »
Rick's product has been my preferred unit. For another $105, you eliminate a 40 year old, albeit still probably good, piece of critical electrics.
Alright, taken. Which Rick are we talking about?

Offline calj737

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'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline cantarauk

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Re: First serious build ever - CB750 K7 Café
« Reply #132 on: January 11, 2017, 12:45:59 AM »
I emailed for some further input on the new M-unit from Motogadget and their response was -


"In a few days/weeks we will have also a 'm.unit blue' for 319 EUR.
It will have connection to an app via Bluetooth.
BUT this connection is limited to specific Android phones (list will be supplied). About 2-3 months later we will have a version for iPhone too"

More than the above they would not give me any further information.

G

Offline cb750tr

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Re: First serious build ever - CB750 K7 Café
« Reply #133 on: January 13, 2017, 06:50:17 AM »
Sorry, try this for reference-
https://cognitomoto.com/collections/electronics/products/ricks-regulator-rectifier-combo-cb350f-cb400f-cb500k-cb550-cb750
Thanks, I've now ordered it (directly from Rick's Motorsport webshop though).

I hate living in Sweden and purchasing items in the US - almost $50 for an item half the size of my hand... :p

Offline calj737

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Re: First serious build ever - CB750 K7 Café
« Reply #134 on: January 13, 2017, 06:52:52 AM »
Next time, have a US member ship it to you through the Post Office. Probably cost less than half that much.
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline cb750tr

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Re: First serious build ever - CB750 K7 Café
« Reply #135 on: January 16, 2017, 01:31:36 AM »
Next time, have a US member ship it to you through the Post Office. Probably cost less than half that much.
Never even thought of that. Will keep it in mind until next time!

Offline cb750tr

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Re: First serious build ever - CB750 K7 Café
« Reply #136 on: January 16, 2017, 04:57:39 AM »
It's now been several months (since July) since I heard back from Cliff Meyer... Sent emails both in November and December without any reply. Starting to worry. I'm hoping that it's just his e-mail acting up, but I haven't been able to find an alternative e-mail to reach him on. Does anyone on here know him or have a way to contact him?

Thanks in advance.

Offline calj737

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Re: First serious build ever - CB750 K7 Café
« Reply #137 on: January 16, 2017, 05:00:07 AM »
He's still cranking things out. I would NOT worry about his integrity as he is very reliable. Not sure about his email, but I'll check with a buddy who is quite close to him and PM you contact info to compare against what you have.
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline cb750tr

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Re: First serious build ever - CB750 K7 Café
« Reply #138 on: January 16, 2017, 06:25:03 AM »
He's still cranking things out. I would NOT worry about his integrity as he is very reliable. Not sure about his email, but I'll check with a buddy who is quite close to him and PM you contact info to compare against what you have.
Thanks a bunch once again Cal! Not sure what I'd do without you at this stage of my build ;)

Offline cb750tr

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Re: First serious build ever - CB750 K7 Café
« Reply #139 on: January 20, 2017, 10:33:23 AM »


Woop.

Offline SOHC4 Cafe Racer Fan

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Re: First serious build ever - CB750 K7 Café
« Reply #140 on: January 20, 2017, 11:19:14 AM »
Brembo 19RCS is a very potent MC.  I had one on my RC51SP2 and did 1-finger braking.
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline cb750tr

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Re: First serious build ever - CB750 K7 Café
« Reply #141 on: January 23, 2017, 12:34:25 PM »
Trying the Wintergreen Oil trick. Can report that it's quite interesting to heat. Smells bubble gum in my entire workshop. Will be interesting to see if I start seeing pink unicorns!


Offline cb750tr

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Re: First serious build ever - CB750 K7 Café
« Reply #142 on: April 04, 2017, 10:40:10 AM »
Welp, this goes to #$%*.

I barely have time for anything besides work and family, so I have gotten very little done the last couple of months.

Well, I have changed the ignition system to Pamco, but I cannot get the bike to run properly. I've taken the carb out and cleaned it (twice), I run the fuel from a bottle so no more rust in the fuel line-issues. The slow jets were pulled out, everything else was disassembled and cleaned meticulously. No problem, and nothing was blocked the second time around.

At first it only fired on three cylinders (not #2). Here's a video;


This was after the first cleaning, before the second one. Cleaning it a second time didn't change anything.

I pulled the plugs, and it's running extremely lean. The spark plug on #2 and #4 (which is running) look the same. It's backed up by the fact that spraying starter gas kills the engine, and doesn't rev it. However, this could still be an ignition issue and not a carb issue (if I'm not completely mistaken).

I changed the coils over, which made it run on all four, but not well. And it can't take ANY throttle what so ever, and cannot rev. Still dies if I apply starter gas. See video below;


The noise before it dies is me giving it a tiny bit of throttle.

I honestly am at a stand still. Could it be a timing issue? Could it be the carb? Can I have broken anything? Any ideas?

I've tried running both with and without the air box.

I'd appreciate all the help I can get.

Offline SKTP

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Re: First serious build ever - CB750 K7 Café
« Reply #143 on: April 04, 2017, 11:34:55 AM »
Sorry I am no help with the runnign issues...but I have been in the market for a new modern Master...

after googling yours, how is this possible? Are there fake Brembos? This price seems way too low to be true.

EDIT I can't make it link why?????????


http://www.ebay.com/itm/Brembo-19-RCS-Radial-Brake-Master-Cylinder-For-Kawasaki-Z1000-SX-Z800-ZX-10R-/112317441209?_trksid=p2385738.m2548.l4275

here's what i am trying to link:

« Last Edit: April 04, 2017, 11:41:09 AM by SKTP »
1978k rebuild thread http://forums.sohc4.net/index.php?topic=68423.0
BIKE OF THE MONTH - OCTOBER 2017
2003 Ducati M800ie
1997 Honda CR-V
2004 Honda CR-V
1966 Honda S90

Offline calj737

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Re: First serious build ever - CB750 K7 Café
« Reply #144 on: April 04, 2017, 12:29:58 PM »
To your running issue:

Have you verified the fuel level with Clear tube method? If not, do so now.
With the carbs on and off repeatedly, did you bench synch them?

Also, please check the resistance of the plug caps with your meter. Should be very near 5k Ohms. Remove them from the plug wires to check.
'74 550 Build http://forums.sohc4.net/index.php?topic=126401.0
'73 500 Build http://forums.sohc4.net/index.php?topic=132935.0

"Of all tyrannies, a tyranny sincerely exercised for the good of it's victim may be the most oppressive. It may be better to live under robber barons than under omnipotent moral busybodies. The robber baron's cruelty may sometimes sleep, his cupidity may at some point be satiated, but those who torment us for our own good will torment us without end for they do so with the approval of their own conscience." - C.S. Lewis

Offline cb750tr

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Re: First serious build ever - CB750 K7 Café
« Reply #145 on: April 04, 2017, 12:47:43 PM »
Sorry I am no help with the runnign issues...but I have been in the market for a new modern Master...

after googling yours, how is this possible? Are there fake Brembos? This price seems way too low to be true.

EDIT I can't make it link why?????????


http://www.ebay.com/itm/Brembo-19-RCS-Radial-Brake-Master-Cylinder-For-Kawasaki-Z1000-SX-Z800-ZX-10R-/112317441209?_trksid=p2385738.m2548.l4275


Yes, these are fake Brembos. They use different gaskets, they aren't honed as well, and are overall a lot lower quality. I don't expect mine to last a season, and it's not a permanent part, but it will do during the build stage. If I like it I'll definitely get a proper Brembo.

Offline cb750tr

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Re: First serious build ever - CB750 K7 Café
« Reply #146 on: April 04, 2017, 12:50:37 PM »
To your running issue:

Have you verified the fuel level with Clear tube method? If not, do so now.
With the carbs on and off repeatedly, did you bench synch them?

Also, please check the resistance of the plug caps with your meter. Should be very near 5k Ohms. Remove them from the plug wires to check.
I was under the impression that you couldn't check the fuel level on the 77-78 carbs, as their overfill works completely different? They close before the fuel ever reaches the overfill tubes, do they not? Or am I wrong? Either way, I checked the fuel level by filling the carb up and then opening it (without flipping it over), and they are all filled up.

I have bench synched them before, and also done a vacuum sync. As I haven't changed anything when it comes to the carb setup (but rather changed the ignition), I cannot see how this could cause any issues.

I haven't checked the resistance however! Will do that, thank you!

Offline SOHC4 Cafe Racer Fan

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Re: First serious build ever - CB750 K7 Café
« Reply #147 on: April 04, 2017, 03:28:35 PM »
Sorry I am no help with the runnign issues...but I have been in the market for a new modern Master...

after googling yours, how is this possible? Are there fake Brembos? This price seems way too low to be true.

EDIT I can't make it link why?????????


http://www.ebay.com/itm/Brembo-19-RCS-Radial-Brake-Master-Cylinder-For-Kawasaki-Z1000-SX-Z800-ZX-10R-/112317441209?_trksid=p2385738.m2548.l4275

here's what i am trying to link:



That listing is as Kosher as Christmas.

A genuine Brembo 19 RCS is at minimum $290 without a reservoir.  https://www.amazon.com/Brembo-Cylinder-Folding-Standard-Handlebars/dp/B002FDEKW4
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold