« previous next »
Pages: 1 [2] 3 4 ... 10   Go Down

Author Topic: and so it begins, cb550k under the knife  (Read 38924 times)

0 Members and 1 Guest are viewing this topic.

Offline DMcD

  • Enthusiast
  • **
  • Posts: 150
Re: and so it begins, cb550k under the knife
« Reply #25 on: October 10, 2014, 01:59:59 PM »
Time to get this moving again, filler neck welded in

Logged

Offline SOHC4 Cafe Racer Fan

  • Speak up, Whipper-Snapper! I'm a
  • Really Old Timer ...
  • *******
  • Posts: 15,733
  • SOHC/4 Member #1235
Re: and so it begins, cb550k under the knife
« Reply #26 on: October 10, 2014, 02:23:18 PM »
Nicely done.  8)
Logged
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 DMcD

  • Enthusiast
  • **
  • Posts: 150
Re: and so it begins, cb550k under the knife
« Reply #27 on: October 12, 2014, 01:57:23 AM »
Will the tank need to be baffled for road and maybe track day use?
Logged

Offline Restoration Fan

  • My wife will never call me
  • Master
  • *****
  • Posts: 1,966
Re: and so it begins, cb550k under the knife
« Reply #28 on: October 16, 2014, 01:09:31 PM »
Great thread.  Subscribed.
Logged
Ron

Stella - Logan's Senior Project    78 750K http://forums.sohc4.net/index.php?topic=141761.0

Logan's Reward - CB500 and CB550 Cafes    http://forums.sohc4.net/index.php/topic,147787.0.html

Offline DMcD

  • Enthusiast
  • **
  • Posts: 150
Re: and so it begins, cb550k under the knife
« Reply #29 on: October 18, 2014, 12:20:28 PM »
First proper mock up tonight, think the home made tank is going to look ok.  ;D

« Last Edit: February 17, 2015, 02:45:01 PM by DMcD »
Logged

Offline DMcD

  • Enthusiast
  • **
  • Posts: 150
Re: and so it begins, cb550k under the knife
« Reply #30 on: October 20, 2014, 01:58:15 PM »
Some progress on the tank.

Turned a wee bit of aluminium on the lathe to just under 25mm, and bored a 11.5mm hole in it for 1/4 bsp thread (should be 11.7mm but I didn't have a bit) which seems quite a common fuel tap fitting.  I then welded it into a piece of plate to be fitted to the tank.  I have it a bit lower than the base of the tank to make a sump.





I then tac welded the bottom into the tank.  I think it is going ok?

It is going to take a lot of tidying up, but I don't really care, I'll be really pleased if it works out.




« Last Edit: February 17, 2015, 02:24:24 PM by DMcD »
Logged

Offline DMcD

  • Enthusiast
  • **
  • Posts: 150
Re: and so it begins, cb550k under the knife
« Reply #31 on: October 25, 2014, 10:47:03 AM »
Finished the tank today.  It weighs 2.7 kilos and holds 16 litres.  I found 3 pinholes in the welds using an airline and soapy water which were easy to fix.



Now onto the exhausts......

« Last Edit: February 17, 2015, 02:25:37 PM by DMcD »
Logged

Offline DMcD

  • Enthusiast
  • **
  • Posts: 150
Re: and so it begins, cb550k under the knife
« Reply #32 on: October 28, 2014, 10:47:28 AM »
I'm waiting on a guy to get me some scrap sheet metal from his work place to make my exhausts.  I'm off work this week so was looking for some small jobs.  I thought I'd have a go at the rear frame hoop.  I had a poke around the shed and found a piece of suitable looking pipe.  Think I hit it lucky as it seems to be seamless 316 stainless with a very thick wall.


My father in law used to be a plumber so I got the keys for his shed and went digging.



I got lucky again as it had the 22mm former which is what I needed.  The radius was also pretty close to what I wanted, but Christ it was strong.



15 1/2 stone and a bit of bouncing, got it started and the wth the help of my testosterone filled teenage son we got it pulled round remarkably well.



We were so pleased with ourselves that we even put the wee upward kink in it too :-)

Might get a few glasses of brandy later, and take to the frame with the grinder.




« Last Edit: February 17, 2015, 02:27:43 PM by DMcD »
Logged

Offline DMcD

  • Enthusiast
  • **
  • Posts: 150
Re: and so it begins, cb550k under the knife
« Reply #33 on: October 28, 2014, 01:41:38 PM »
Propped the loop in place, think I'll maybe shorten it another inch.



Just because the tank has boosted my confidence, I might try to make the seat unit out of aluminium, just to see how it turns out.
« Last Edit: February 17, 2015, 02:30:49 PM by DMcD »
Logged

Offline SOHC4 Cafe Racer Fan

  • Speak up, Whipper-Snapper! I'm a
  • Really Old Timer ...
  • *******
  • Posts: 15,733
  • SOHC/4 Member #1235
Re: and so it begins, cb550k under the knife
« Reply #34 on: October 28, 2014, 07:13:00 PM »
Quote from: DMcD on October 28, 2014, 01:41:38 PM
Propped the loop in place, think I'll maybe shorten it another inch.



Just because the tank has boosted my confidence, I might try to make the seat unit out of aluminium, just to see how it turns out.
Nice hoop!
Logged
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 DMcD

  • Enthusiast
  • **
  • Posts: 150
Re: and so it begins, cb550k under the knife
« Reply #35 on: November 06, 2014, 02:22:46 PM »
Rear frame hoop tacked in.



Had a practice at the exhausts, going for 32mm inlet and 60mm out x 500mm long.  My wee rollers wont do 500 so I'll have to make 8 cones for the 4 megaphones.

You get an app for everything these days!


Doing a mock up in a bit of .5mm tin



Turned out surprisingly well.



Will have to try it in slightly heavier metal now.





« Last Edit: February 17, 2015, 02:34:48 PM by DMcD »
Logged

Offline DMcD

  • Enthusiast
  • **
  • Posts: 150
Re: and so it begins, cb550k under the knife
« Reply #36 on: November 09, 2014, 09:39:47 AM »
Made a good contact with a nearby engineering workshop.  Got this 1.2mm stainless steel for £20



Managed to roll and tack my first 4 megaphone sections, my cheapo rollers are only supposed to do 1mm mild steel, so the stainless pushed them to the limit.



4 more to go to get down to 32 mm.
« Last Edit: February 17, 2015, 02:36:15 PM by DMcD »
Logged

Offline DMcD

  • Enthusiast
  • **
  • Posts: 150
Re: and so it begins, cb550k under the knife
« Reply #37 on: November 17, 2014, 01:09:27 PM »
Cut, rolled and tacked another 4 cones tonight.  These ones go from 46mm down to 32mm and are 125mm long. 



The bigger ones are 60mm-46mm x 250mm. 

Originally I intended them to be 500mm total, but after rolling the bigger ones I didn't think I could roll 250mm any tighter, so went for 125mm which gives me a total of 375mm.  The shorter ones aren't as noticeable as I thought they would be.


« Last Edit: February 17, 2015, 02:38:23 PM by DMcD »
Logged

Offline DMcD

  • Enthusiast
  • **
  • Posts: 150
Re: and so it begins, cb550k under the knife
« Reply #38 on: November 19, 2014, 01:25:17 PM »
Got the 8 cones welded together last night, the ends are a bit out of shape from the heat, which is a problem with stainless apparently as it is very bad at conducting heat away from the weld, but they should hammer back ok.  I couldn't resist yet another mock-up, let me know if this is getting boring?  Looks like mounting them to the footrest hanger is the easy option?  (Excuse the temporary bmx foot pegs!)



« Last Edit: February 17, 2015, 02:40:28 PM by DMcD »
Logged

Offline Godffery

  • Godffery's Garage
  • Expert
  • ****
  • Posts: 1,172
  • Wisdom brings a realization of how little we know.
    • Godffery's Garage hosted by VinMoto.org
Re: and so it begins, cb550k under the knife
« Reply #39 on: November 20, 2014, 09:11:49 PM »
   Some pretty interesting fab work your doing there!
« Last Edit: November 23, 2014, 11:04:57 PM by Godffery »
Logged

Offline MickB

  • Expert
  • ****
  • Posts: 945
Re: and so it begins, cb550k under the knife
« Reply #40 on: November 22, 2014, 11:56:45 AM »
DMcD I presume Dougal Mc Dougal, looks great, subscribed. Are you going to race it at Isle O Man?
Logged

Offline DMcD

  • Enthusiast
  • **
  • Posts: 150
Re: and so it begins, cb550k under the knife
« Reply #41 on: November 23, 2014, 03:57:46 AM »
Quote from: MickB on November 22, 2014, 11:56:45 AM
DMcD I presume Dougal Mc Dougal, looks great, subscribed. Are you going to race it at Isle O Man?

It will be going to the Isle of Man, hopefully next August, but it is just another race replica I'm afraid.  I think I have clocked up most of the views of this youtube video, it is my inspiration ;-)

« Last Edit: November 23, 2014, 05:23:58 AM by DMcD »
Logged

Offline MickB

  • Expert
  • ****
  • Posts: 945
Re: and so it begins, cb550k under the knife
« Reply #42 on: November 23, 2014, 09:47:58 AM »
Looks beautiful, nice and cool after yesterday's 44°C/ 111°F here.
Logged

Offline DMcD

  • Enthusiast
  • **
  • Posts: 150
Re: and so it begins, cb550k under the knife
« Reply #43 on: November 27, 2014, 02:32:17 PM »
Bit of progress on the seat unit, not sure if I can be bothered trying to hide a wee battery and wires in it.








« Last Edit: February 17, 2015, 02:41:39 PM by DMcD »
Logged

Offline DMcD

  • Enthusiast
  • **
  • Posts: 150
Re: and so it begins, cb550k under the knife
« Reply #44 on: November 30, 2014, 10:57:54 AM »
Ordered the £75 600cc kit off fleabay.  I'll let the local engine tuning workshop have a look at it to see what they think.  Research on the interweb would indicate that the most common advice is to buy oem circlips, and match each piston to an individual cylinder.
Logged

Offline DMcD

  • Enthusiast
  • **
  • Posts: 150
Re: and so it begins, cb550k under the knife
« Reply #45 on: December 05, 2014, 09:57:46 AM »
Day off work, so hammered a bit of shape into a piece of aluminium for the seat.



Seems ok for a first attempt, will tack it on tonight and seam weld it at my welding class on Tuesday night. (Might as well use their argon)

600cc chinese piston kit and head gasket arrived this morning too, looks fine, and delivered half way round the world in 96 hrs!

« Last Edit: February 17, 2015, 02:44:00 PM by DMcD »
Logged

Offline MickB

  • Expert
  • ****
  • Posts: 945
Re: and so it begins, cb550k under the knife
« Reply #46 on: January 09, 2015, 12:25:26 PM »
Lookin good Dougal Mc Dougal
Logged

Offline DMcD

  • Enthusiast
  • **
  • Posts: 150
Re: and so it begins, cb550k under the knife
« Reply #47 on: January 12, 2015, 01:42:24 PM »
Haven't got anything done recently due to the festivities.

Got a couple of hours in the garage tonight to start the front fairing bracket.



Thought I'd tig them on rather than messing about with wee rivets.  Bit of a welding reaction due to the coating on the brackets, but turned out ok.





« Last Edit: February 17, 2015, 02:50:18 PM by DMcD »
Logged

Offline DMcD

  • Enthusiast
  • **
  • Posts: 150
Re: and so it begins, cb550k under the knife
« Reply #48 on: February 06, 2015, 02:11:20 PM »
Mocking up finished, now the work starts.......

cb550:
Logged

Offline DMcD

  • Enthusiast
  • **
  • Posts: 150
Re: and so it begins, cb550k under the knife
« Reply #49 on: February 09, 2015, 12:03:30 PM »
Had the cutting disc in action tonight, a surprising amount of rust fell out of the passenger hanger brackets.

The next plan is to get the wire brush going, tidy the visible welds, and add the usual bracing.

« Last Edit: February 18, 2015, 09:06:18 AM by DMcD »
Logged
Pages: 1 [2] 3 4 ... 10   Go Up
« previous next »