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Author Topic: 72 CB500 Restomod - *Update* Sold!  (Read 46930 times)

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Offline Scramps

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Re: 71 CB500 Restomod
« Reply #100 on: May 10, 2018, 12:05:17 PM »
Eureka!
While investigating the idiot lights (thanks cal) I discovered the culprit; my cheap Chinese switches!

The kill switch had a ground wire running to one side of it, and the starter button had a switched power wire running to it, so I just swapped those two pins on the plug and VIOLA!

That’s a load off my toad
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Offline Scramps

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Re: 71 CB500 Restomod
« Reply #101 on: May 10, 2018, 05:48:54 PM »
Well gang, I’ve got all the things hooked up, fuel in the carbs, spark from the plugs, and air from the atmosphere. What else should I check if it’s not firing up?
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Offline Scramps

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Re: 71 CB500 Restomod
« Reply #102 on: May 11, 2018, 09:25:16 AM »
It is cranking, but not even so much as a cough or a sputter.

I have a Pamco ignition installed, and I have it set up per the instructions on their website. I also have new coils, plugs and wires. I set the valve timing back when I put the engine together, it’s possible that I messed that up, I’ll check it out.
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Offline Scramps

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Re: 71 CB500 Restomod
« Reply #103 on: May 11, 2018, 02:25:34 PM »
Tested for spark on plug #4, it is firing appropriately, with the “1-4” F mark. As for the points cam, this ignition plate replaces the original cam with this aluminum disk, with magnets in it, about 90* apart. The installation instructions indicated that the two magnets should be at 3 o’clock and 6 o’clock with the cylinder 1-4 mark at 12 o’clock, if that makes sense.



I think I’ve got that right, so maybe the timing is advanced or retarded too much?
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Offline Scramps

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Re: 71 CB500 Restomod
« Reply #104 on: May 11, 2018, 03:32:50 PM »
No play on #1, just a slight bit on #4


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Offline Scramps

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Re: 71 CB500 Restomod
« Reply #105 on: May 12, 2018, 07:48:22 AM »
Ok I figured out the problem, I had the petcock switched to ‘off’ instead of ‘reserve’

That’ll get em every time


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Offline theDQG

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Re: 71 CB500 Restomod
« Reply #106 on: May 12, 2018, 08:28:00 AM »
Quote from: Scramps on May 12, 2018, 07:48:22 AM
Ok I figured out the problem, I had the petcock switched to ‘off’ instead of ‘reserve’

That’ll get em every time


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Happens to a lot of smart people. A lot more than you think...
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'83 xv920
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'81 R100RS

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Offline Scramps

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Re: 71 CB500 Restomod
« Reply #107 on: May 12, 2018, 09:12:29 AM »
I’ve made a video for this occasion:


You couldn’t knock the smile off of my face with a friggin sledgehammer right now
« Last Edit: May 12, 2018, 09:19:08 AM by Scramps »
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Offline SOHC4 Cafe Racer Fan

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Re: 71 CB500 Restomod - She's a runner! :D
« Reply #108 on: May 12, 2018, 09:56:33 AM »
Well done!!  But let's be honest, that was NOT the "first" startup after 30+/- years.  No way.  Fuel was already cycled and it fired like you had been running it a short time before.   ::)
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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 Scramps

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Re: 71 CB500 Restomod - She's a runner! :D
« Reply #109 on: May 12, 2018, 10:23:04 AM »
yeah but "2nd startup after 30+/- years" doesn't sound as impressive :P

I had run it for maybe 20-30 seconds before I stopped to setup and record the video

Edit: I have given the video a more appropriate title
« Last Edit: May 12, 2018, 10:28:23 AM by Scramps »
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Offline SOHC4 Cafe Racer Fan

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Re: 71 CB500 Restomod - She's a runner! :D
« Reply #110 on: May 12, 2018, 11:29:01 AM »
Quote from: Scramps on May 12, 2018, 10:23:04 AM
yeah but "2nd startup after 30+/- years" doesn't sound as impressive :P


Agreed!!

Still awesome!!
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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 DurangoCB

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Re: 71 CB500 Restomod - She's a runner! :D
« Reply #111 on: May 12, 2018, 02:13:33 PM »
Momentous!  Congratulations, Scramps. 
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1971 CB500 Four- current project http://forums.sohc4.net/index.php/topic,170622.0.html
1978 CX500- next in line

Offline Scramps

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Re: 71 CB500 Restomod - She's a runner! :D
« Reply #112 on: May 13, 2018, 08:11:22 AM »
Around the time that I started this project, I bought 4 vacuum gauges to make a carb synchronizer, so I think I’ll work on building that.

I’m going to make one sort of in the style of Dino’s from Hack a Week. His 750 build was one of my favorite pieces of recorded media ever, as a side note.

Speaking of YouTube videos, the Saturday Sessions build from Bike Exif is also very good, nice editing, funky music, and a surprisingly thorough examination of the process. The guys in the videos do a lot of things that drew criticism, but overall, a pretty good watch

https://www.youtube.com/playlist?list=PLBeUeF9iBQ0Dzh00hEnTRW6YMGo7Wlq11
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Offline seanbarney41

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Re: 71 CB500 Restomod - She's a runner! :D
« Reply #113 on: May 13, 2018, 08:40:01 AM »
Yeah, gotta love watching a nice original bike get ruined and then seeing it smoke like a 2 stroke at the end.
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If it works good, it looks good...

Offline seanbarney41

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Re: 71 CB500 Restomod - She's a runner! :D
« Reply #114 on: May 13, 2018, 08:51:50 AM »
Maybe check out this channel, mostly Kawasaki's and they don't get super in depth tech wise, but they really do beautiful, non-invasive work
https://www.youtube.com/results?search_query=johnny%27s+vintage+motorcycles
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If it works good, it looks good...

Offline Scramps

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Re: 71 CB500 Restomod - She's a runner! :D
« Reply #115 on: May 13, 2018, 11:49:45 AM »
I had a kz750 spectre briefly last fall, bought it and doubled my money on it, but I do wish I had kept it.

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Offline Flanker08

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Re: 71 CB500 Restomod - She's a runner! :D
« Reply #116 on: May 13, 2018, 06:46:53 PM »
Awesome job!
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Offline Scramps

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Re: 71 CB500 Restomod - She's a runner! :D
« Reply #117 on: May 14, 2018, 12:55:50 PM »
Thank you, flanker and Durango, I appreciate the compliments! I’m trying to be less of a wiener about taking compliments, which is a real problem that I have.


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Offline SOHC4 Cafe Racer Fan

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Re: 71 CB500 Restomod - She's a runner! :D
« Reply #118 on: May 14, 2018, 05:40:06 PM »
Quote from: Scramps on May 13, 2018, 11:49:45 AM
I had a kz750 spectre briefly last fall, bought it and doubled my money on it, but I do wish I had kept it.



Clean bike!
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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 seanbarney41

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Re: 71 CB500 Restomod - She's a runner! :D
« Reply #119 on: May 14, 2018, 06:49:54 PM »
Quote from: SOHC4 Cafe Racer Fan on May 14, 2018, 05:40:06 PM
Quote from: Scramps on May 13, 2018, 11:49:45 AM
I had a kz750 spectre briefly last fall, bought it and doubled my money on it, but I do wish I had kept it.



Clean bike!
yeah, pretty quick too!...here is my Kawasaki ugly duckling
KIMG0232 by Sean Barney, on Flickr
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If it works good, it looks good...

Offline Scramps

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Re: 71 CB500 Restomod - She's a runner! :D
« Reply #120 on: May 14, 2018, 08:07:50 PM »
Very nice. Maybe one day I’ll track down another one
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Offline DurangoCB

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Re: 71 CB500 Restomod - She's a runner! :D
« Reply #121 on: May 14, 2018, 08:49:50 PM »
Quote from: Scramps on May 14, 2018, 12:55:50 PM
Thank you, flanker and Durango, I appreciate the compliments! I’m trying to be less of a wiener about taking compliments, which is a real problem that I have.

That's a common fault.  Your use of the word "wiener" on the other hand...  unforgivable.  LOL

Allow the compliments to make you feel good.  Don't forget that that's the ONLY reason to be working on these old bikes.  It won't make you rich.  It won't make you cool.  Women couldn't care less.  Long hours in the shop don't do much for your health or your physique.  The only reason to do it is because it's fun.  If it isn't fun... figure out how to make it fun! 
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1971 CB500 Four- current project http://forums.sohc4.net/index.php/topic,170622.0.html
1978 CX500- next in line

Offline Scramps

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Re: 71 CB500 Restomod - She's a runner! :D
« Reply #122 on: May 15, 2018, 05:07:05 PM »
Well said, thank you again.

Back to bike stuff!

In the absence of stock headlight brackets, what’s a good way to seal up the top side of some stock gators?
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Offline RAFster122s

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Re: 71 CB500 Restomod - She's a runner! :D
« Reply #123 on: May 16, 2018, 09:24:24 PM »
Happy birthday belatedly wished. Congrats on getting the bike going. I think I have a good rear rim, but it is currently on the bike, a 550. Unfortunately, I cannot be as generous as Calj as I can't give it away given I bought a replacement.  Rim is pretty good, the spokes on the rim not so good...figure you just want a good rim, right?
Presuming your requests on the forum didn't net another...or you didn't hit up Bill's batcave yet.

David
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David- back in the desert SW!

Offline Scramps

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Re: 71 CB500 Restomod - She's a runner! :D
« Reply #124 on: May 17, 2018, 07:01:43 AM »
Oh yeah, I’ve got the rim situation resolved. Thanks for the offer, and for the birthday wishes!
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