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Author Topic: Time to go racing.  (Read 8104 times)

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Offline Rocketman

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Re: Time to go racing.
« Reply #25 on: June 22, 2021, 05:17:30 AM »
Enjoying your build.  Racing a 550 myself with AHRMA. 

Some posts you may enjoy:

http://forums.sohc4.net/index.php/topic,83871.0.html

http://forums.sohc4.net/index.php/topic,149408.0.html

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Offline Shtonecb500

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Re: Time to go racing.
« Reply #26 on: June 22, 2021, 06:28:57 AM »
you've got some really nice stuff over there.
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73/74'' CB500/550 resto-mod - sold
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74' 750 chopper hardtail - complete - sold
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71' cb500 K0 survivor - complete
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Offline Daggless888

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Re: Time to go racing.
« Reply #27 on: June 22, 2021, 11:38:08 PM »
Quote from: Rocketman on June 22, 2021, 05:17:30 AM
Enjoying your build.  Racing a 550 myself with AHRMA. 

Some posts you may enjoy:

http://forums.sohc4.net/index.php/topic,83871.0.html

http://forums.sohc4.net/index.php/topic,149408.0.html
Cheers Rocketman. I have been following your build for a while and enjoying your journey back into racing. Thank you for the links.
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Offline Daggless888

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Re: Time to go racing.
« Reply #28 on: June 23, 2021, 01:13:27 AM »
Quote from: Shtonecb500 on June 22, 2021, 06:28:57 AM
you've got some really nice stuff over there.
Thanks. I have been planning this bike for the last 3 years so started buying all the bits a while back so I don’t have to sit and wait for everything to turn up.
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Offline Daggless888

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Re: Time to go racing.
« Reply #29 on: June 24, 2021, 01:05:12 AM »
As part of the planning process I used excel to log all the parts being used for this build. I wanted a comprehensive list of every nut and bolt used along with supplier details. I might have got a bit carried away but I had a lot of time whilst waiting for all the bits to arrive. I pinched the CSMNL schematics which are brilliant for all the detail. A bit nerdish but a great resource in the future when I get even older and more forgetful where the bits go and where I got them from. Some days I wish I could defrag the brain as it’s fills up with so much crap from everyday life….
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Offline Daggless888

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Re: Time to go racing.
« Reply #30 on: June 24, 2021, 01:11:16 AM »
Wheels are trued and ready for tires. Used E2 bearings in the hubs which are low friction. I can spin the wheels, walk away and make a cuppa and by time I get back that are still going :-). I like that
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Offline Daggless888

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Re: Time to go racing.
« Reply #31 on: June 26, 2021, 03:55:04 PM »
Avon am22’s fitted along with ap racing brake caliper. Had to remove a couple of mm from the back of the caliper. Used a belt sander as it was just touching the spokes. Good clearance now.
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Offline Daggless888

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Re: Time to go racing.
« Reply #32 on: June 26, 2021, 03:58:36 PM »
Practicing safety wiring while I am going along.
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Offline SOHC4 Cafe Racer Fan

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Re: Time to go racing.
« Reply #33 on: June 28, 2021, 08:34:16 AM »
Now the modified hubs make perfect sense.  Nice looking rotor.
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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 Daggless888

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Re: Time to go racing.
« Reply #34 on: July 02, 2021, 12:21:56 AM »
Quote from: SOHC4 Cafe Racer Fan on June 28, 2021, 08:34:16 AM
Now the modified hubs make perfect sense.  Nice looking rotor.
Rotor is a Davies unit. Really well made. Like the rest of their gear. Works really nicely with the ap racing caliper. Really happy with the hubs. They came out nice.
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Offline Daggless888

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Re: Time to go racing.
« Reply #35 on: July 02, 2021, 12:26:27 AM »
Time for the engine. A few photos of all the bits prior to fitting. Im just waiting for a few bits to finish it off. First photo is the nova 6 speed gearbox. Those with an eagle eye may notice the shift drum end is incorrect. Was sent a 350 drum by mistake. Nova were great to deal with swapping for the correct unit instantly. Using the nova gearbox requires a bit of modification to the shift forks. I found a company in Italy who manufacture new forks as NOS is difficult to find. GBmotosports. A quick shave on the lathe and the forks work beautifully.
« Last Edit: July 02, 2021, 01:05:15 AM by Daggless888 »
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Offline Daggless888

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Re: Time to go racing.
« Reply #36 on: July 02, 2021, 01:10:49 AM »
Crank was sent off for balancing and we removed 1kg while we were at it. Was then sent off for Superfinishing and ready to go.
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Offline Daggless888

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Re: Time to go racing.
« Reply #37 on: July 02, 2021, 01:23:38 AM »
Conrods and pistons are Davies. Pistons are 2 ring slipper. Rods are 2mm longer than standard. They use this combination in their “short stroke” configuration.
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Offline Daggless888

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Re: Time to go racing.
« Reply #38 on: July 02, 2021, 01:35:23 AM »
So everything bolted up nicely with new bearings throughout. I got all excited when I put the gearbox in that I forgot to take any photos before sealing it up. Gears change as they should and the crank spins nicely.
« Last Edit: July 02, 2021, 01:37:28 AM by Daggless888 »
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Offline Daggless888

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Re: Time to go racing.
« Reply #39 on: July 02, 2021, 01:45:41 AM »
I’ve just dropped the cylinders off at the machine shop to have new liners fitted along with nikasil coating and have them oringed for use with copper gasket. Next I need to sort out the head.
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Offline SOHC4 Cafe Racer Fan

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Re: Time to go racing.
« Reply #40 on: July 02, 2021, 11:13:56 AM »
Wow. This is going to be one heck of a motor.
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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 Daggless888

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Re: Time to go racing.
« Reply #41 on: July 02, 2021, 03:04:10 PM »
Quote from: SOHC4 Cafe Racer Fan on July 02, 2021, 11:13:56 AM
Wow. This is going to be one heck of a motor.
I’m aiming for 60 hp with a total dry weight of 135kg. I’m on target for the weight so it will be interesting to see how we go with the motor. 
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Offline Old Scrambler

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Re: Time to go racing.
« Reply #42 on: July 04, 2021, 11:37:07 AM »
2mm longer rods.............assuming oem stroke..........will you have to shape the chambers?
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Offline Don R

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Re: Time to go racing.
« Reply #43 on: July 04, 2021, 09:18:42 PM »
 The piston pin is likely raised to allow for the extra rod length.
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Offline Daggless888

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Re: Time to go racing.
« Reply #44 on: July 05, 2021, 12:58:39 AM »
Quote from: Old Scrambler on July 04, 2021, 11:37:07 AM
2mm longer rods.............assuming oem stroke..........will you have to shape the chambers?

No modifications for the chambers needed. Don is spot on. Pin is higher to allow slipper piston design. I will take a side on photo once they return from machine shop.
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Offline RAFster122s

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Re: Time to go racing.
« Reply #45 on: July 05, 2021, 05:52:34 AM »
Mike R at JMR has helped Brent Waller build a CB550 with 76 hp at the rear wheel. Magician with head work when you are ready for more hp.
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Offline Daggless888

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Re: Time to go racing.
« Reply #46 on: August 05, 2021, 06:59:23 AM »
Quote from: RAFster122s on July 05, 2021, 05:52:34 AM
Mike R at JMR has helped Brent Waller build a CB550 with 76 hp at the rear wheel. Magician with head work when you are ready for more hp.

Cheers RAFster. Have been in touch with mike. 👍
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Offline Daggless888

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Re: Time to go racing.
« Reply #47 on: August 05, 2021, 07:09:11 AM »
As I’m waiting for the cylinders to return I’ve finished off the wiring. Have used the ignitech programable ignition along with a smiths Motorsport tacho.
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Offline Daggless888

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Re: Time to go racing.
« Reply #48 on: August 05, 2021, 07:14:18 AM »
Cockpit view. Might be a bit ambitious with 14k on the tacho!
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Offline Daggless888

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Re: Time to go racing.
« Reply #49 on: August 05, 2021, 07:25:19 AM »
Backend of the tacho is not so pretty yet. Just working out which wire to keep so I can get rid of all the others. We also have to run a lanyard style kill switch.
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