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Author Topic: CB500 Four K1 1972, currently mid mono-shock, working on engine  (Read 9052 times)

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Re: CB500 Four K1 1972, currently mid mono-shock, working on engine
« Reply #75 on: May 30, 2020, 06:28:21 AM »
What looks like a pattern part coil (shorter length) just fried itself. Too hot to touch, now nothing.

Anyone know if I can run incandescent indicators up front with LED at the rear?

Thanks
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Re: CB500 Four K1 1972, currently mid mono-shock, working on engine
« Reply #76 on: May 31, 2020, 05:28:00 AM »
I could use some help on the brake callipers.
I plan to run with banjo fitting direct to calliper.
Anyone got a method to remove the insert that’s preventing the bolt from running in?
Thanks.
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Offline seanbarney41

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Re: CB500 Four K1 1972, currently mid mono-shock, working on engine
« Reply #77 on: May 31, 2020, 06:16:53 AM »
I used a drywall screw, maybe 1.5"?  Anyway, long enough that you have something to grab.  Gently screw it into the insert, then lever it out with some pliers.  I don't remember it taking a whole lot of brute force, but it has been a few years since I did it.
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If it works good, it looks good...

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Re: CB500 Four K1 1972, currently mid mono-shock, working on engine
« Reply #78 on: May 31, 2020, 09:22:25 AM »
Thanks. Assume the insert is press fit, not threaded?
Also there’s a small lip on the calliper did you bother to file that off or just seat the copper washer in there?
Thanks
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Re: CB500 Four K1 1972, currently mid mono-shock, working on engine
« Reply #79 on: May 31, 2020, 10:03:10 AM »
Worked like a charm. Thanks.
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Offline seanbarney41

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Re: CB500 Four K1 1972, currently mid mono-shock, working on engine
« Reply #80 on: May 31, 2020, 10:34:42 AM »
I did not file the lip off, as I was not intending to use a banjo bolt...i used 2 hardlines on my dual disc setup.  I just needed to move the insert to the bleed screw hole so both sides would be symmetrical.
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Re: CB500 Four K1 1972, currently mid mono-shock, working on engine
« Reply #81 on: May 31, 2020, 10:37:08 AM »
Also, check the bike out in bike of the month.  Close battle going on.  Could use a vote.
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Re: CB500 Four K1 1972, currently mid mono-shock, working on engine
« Reply #82 on: June 01, 2020, 01:21:46 AM »
sorry, missed this, voting closed.
Terrific bike.
i could never have got behind those rectangular mirrors.
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Re: CB500 Four K1 1972, currently mid mono-shock, working on engine
« Reply #83 on: June 14, 2020, 06:04:07 AM »
Finally got all the wiring sorted - what a headache.
Mix of incandescent up front and LED at the back means the indicators don’t yet flash but everything else works ok.
I hadn’t figured on the happy brake light set up however.
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Re: CB500 Four K1 1972, currently mid mono-shock, working on engine
« Reply #84 on: August 31, 2020, 03:43:40 AM »
Bit of an update -
Managed to extend the lead on the secondhand coil using a copper nail and some shrink wrap. Works perfectly.
Thanks someone for the tip on wiring in the electronic tach. Also works perfectly.
Finally got some primer on the tank (should have done better with filling the indents) and bump seat.
Need to figure out how to fix a pad of some sort. And clean the paint off the rear lights.
Found an adjustable ‘resistor’ on eBay that allows decent flash rate with incandescent and LED indicator mix.
Making very slow progress but almost there.
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Offline SOHC4 Cafe Racer Fan

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Re: CB500 Four K1 1972, currently mid mono-shock, working on engine
« Reply #85 on: August 31, 2020, 10:00:39 AM »
You may want to add some seat foam material toward the edges.  Right now you have more foam protruding into your nuts and ass, which won't be very comfortable except for very short rides.  On longer rides, it will apply pressure on those parts of your body.  If you ride aggressively, it will not provide any support as you hang off to your ass cheek, and you will tend to slide off the seat. 

Just my$0.02.
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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

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Re: CB500 Four K1 1972, currently mid mono-shock, working on engine
« Reply #86 on: August 31, 2020, 10:39:42 AM »
Thanks for the heads up. That was just quick look.
I made a base just now and mocked up something a lot better.
Need to work on how to cover it.
« Last Edit: August 31, 2020, 10:44:33 AM by Register »
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Offline SOHC4 Cafe Racer Fan

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Re: CB500 Four K1 1972, currently mid mono-shock, working on engine
« Reply #87 on: September 01, 2020, 08:34:09 AM »
Definitely much better.
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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

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Re: CB500 Four K1 1972, currently mid mono-shock, working on engine
« Reply #88 on: November 15, 2020, 01:04:20 PM »
Creeping forwards.
My daughter sorted the saddle so I added a couple of tape stripes to the primer. Could work if I had the skills.
Next stop fix the leaking carb - wish I’d used allen head bolts.
And uncover the tail lights.
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Re: CB500 Four K1 1972, currently mid mono-shock, working on engine
« Reply #89 on: May 02, 2021, 12:39:27 AM »
A couple of photos after final very DIY paint
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Re: CB500 Four K1 1972, currently mid mono-shock, working on engine
« Reply #90 on: May 09, 2021, 01:21:39 PM »
I need some help diagnosing a top end oil leak please.

Looks to be coming from the internal area around the barrels.

Hopefully photos explain.

Thanks
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Offline Shtonecb500

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Re: CB500 Four K1 1972, currently mid mono-shock, working on engine
« Reply #91 on: May 09, 2021, 08:39:22 PM »
nice progress, are you running 18" front and rear?
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73/74'' CB500/550 resto-mod - sold
75' 750f 91' cbr f2 swap cafe - mock up
74' 750 chopper hardtail - complete - sold
74' CB750/836kit - Black mix & match - daily rider - always tweaking
71' cb500 K0 survivor - complete
71' K1 - CANDY GOLD/BROWN Winton kit - in process

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Re: CB500 Four K1 1972, currently mid mono-shock, working on engine
« Reply #92 on: May 09, 2021, 10:08:44 PM »
I'm running 19" front 18" rear. Ali rims ss spokes
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