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Author Topic: Project CB690 (KTM 690 engine in a CB550f frame)  (Read 8050 times)

Offline goodoltup

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Re: Project CB690 (KTM 690 engine in a CB550f frame)
« Reply #10 on: Feb 04, 2018, 13:16:47 »
This is it, the beginning of my dream. I bought a 1977 cb550f frame from a nice guy up in Essex. The engine more or less fits in as I expected. The swingarm pivots will be removed from the 550 frame and new ones constructed that move the engine a few inches forward. A new swingarm will have to be constructed, as well. I may have to modify the left hand tube under the engine to allow it to come down a little, it sits a little high right now.

Offline goodoltup

  • Posts: 51
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Re: Project CB690 (KTM 690 engine in a CB550f frame)
« Reply #11 on: Feb 04, 2018, 13:22:24 »
The other side.
On the shop heaters, I might get a propane one and leave a window open. I had one with electric coils in it, but it was weak.
The plugs in the UK are huge, they look like the ones for dryers and welders back home. Most are 30A though. The British are very proud of their plugs, because of all the safety mechanisms like the on/off switch on every outlet, and the automatic gate that covers up the holes when the plug is removed, but it means that even a small USB charger is way too big to put in your pocket.

Offline goodoltup

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Re: Project CB690 (KTM 690 engine in a CB550f frame)
« Reply #12 on: Feb 04, 2018, 13:26:50 »
Another picture of the frame. I still have some work to do on the frame, like freeing up and removing the centre stand.

Offline goodoltup

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Re: Project CB690 (KTM 690 engine in a CB550f frame)
« Reply #13 on: Feb 04, 2018, 13:28:32 »
The wiring harness. This entire thing has to fit in the CB690 somehow! There is a ton of stuff on it. Tip-over sensor, barometric sensor, two different computers, just lots and lots of connections and switches.

Offline goodoltup

  • Posts: 51
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Re: Project CB690 (KTM 690 engine in a CB550f frame)
« Reply #14 on: Feb 04, 2018, 13:31:35 »
Just an updated picture of the workbench with wrenches all hung.
That brings us up to the present! I will try and post every week, as I will be doing work on the weekends. I expect the whole build to take about a year and a half.
Next steps, removing tabs and swingarm mounts from the frame to get the engine situated, and mockup of the new engine mounts. Then the swingarm construction.
Stay tuned!

Offline jpmobius

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Re: Project CB690 (KTM 690 engine in a CB550f frame)
« Reply #15 on: Feb 04, 2018, 13:59:23 »
I'm in!
Mobius


On a long enough timeline, the survival rate for everyone drops to zero.

1973 RD350 Yamaha build  http://www.dotheton.com/forum/index.php?topic=66498.0

Offline goodoltup

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Re: Project CB690 (KTM 690 engine in a CB550f frame)
« Reply #16 on: Feb 04, 2018, 18:25:34 »
Just overpaid for a seat on eBay. I need it for the mockup, I'll refoam and recover it later. The pan is in good shape which is the most important.
This is from a K model, and I don't actually know if it will easily fit on the F model. We'll find out when it arrives, these pictures are from the auction.

Offline WhyNot

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Re: Project CB690 (KTM 690 engine in a CB550f frame)
« Reply #17 on: Feb 05, 2018, 07:27:04 »
I like it.

Gotta watch, seems interesting.

Good looking work space, as Tim said above, inspires me to go clean my spot up.
2006 Harley Davidson Heritage Softail
1975 Honda CB750K5 needs carb work
1974 Honda CB350F2 needs tins painted (being lazy)
1972 Honda CB175K2 roller no engine
1972 Honda CB/CL350 Engines need roller
1972 Honda SL350K2 Frame for above engine
1972 Honda CB100K2 needs kicker shaft
1990 Mitsubishi MM needs engine rebuild
1984 Dodge D50 Beater DD since 1997

Offline Pete12

  • Posts: 257
Re: Project CB690 (KTM 690 engine in a CB550f frame)
« Reply #18 on: Feb 05, 2018, 08:16:19 »
Cool project, best of both worlds, classic and modern. Looking forward to this one...

Offline irk miller

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Re: Project CB690 (KTM 690 engine in a CB550f frame)
« Reply #19 on: Feb 05, 2018, 10:29:12 »
I like it so far.  Good stuff.  Looks like you lucked out with counter sprocket level.