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Author Topic: Project CB690 (KTM 690 engine in a CB550f frame)  (Read 20443 times)

Offline Pete12

  • Posts: 363
Re: Project CB690 (KTM 690 engine in a CB550f frame)
« Reply #170 on: Apr 21, 2019, 18:30:43 »
The position of the rear guard may be what makes the swing arm appear long. What is the wheelbase now?
Bike does look awesome regardless of the swing arm length though.

Offline goodoltup

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Re: Project CB690 (KTM 690 engine in a CB550f frame)
« Reply #171 on: Apr 22, 2019, 03:03:59 »
Hi Pete,
Cheers for you kind words! I haven't measured the wheelbase with a tape measure, but the program I made to calculate the rake and trail puts it at 1501mm, which is around 96mm longer than a CB550. The swingarm is about 160mm longer than the CB550, but the swingarm pivot is moved forward in the frame. Also the seat was calculated to be 15mm higher than a CB550, and indeed I can just get both my feet flat on the pavement.
Agreed, if it weren't for the rear guard it wouldn't look abnormal at all, really. I bought that rear fender on Amazon for like 18 quid, it is garbage. I think it is a Chinese copy of a GN125 fender, or CG125 something like that. I was thinking about polished aluminium, but I want to keep the grab rail, which is chrome, so thought they would match better. Maybe I should modify it shorter and rotate it up some.

Offline Pete12

  • Posts: 363
Re: Project CB690 (KTM 690 engine in a CB550f frame)
« Reply #172 on: Apr 22, 2019, 03:55:34 »
That length equates to just over 59", which is a very long wheelbase, normal is 54-55". If it was me I would probably shorten the swing arm, but that might be a difficult option. Modifying the rear guard would be an easier option, if you modify it so it fits the wheel curve that would look much better.

Offline Jimbonaut

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Re: Project CB690 (KTM 690 engine in a CB550f frame)
« Reply #173 on: Apr 30, 2019, 10:41:33 »
I was about to say the same thing as Pete12 - could be that the radius of the rear fender is throwing of the visual line a little.  Also, if the rear dropped a few inches that may make a visual difference too (are those shocks height adjustable)?

It's really remarkable what you're doing here, kudos man on an incredible bike and the vision to make it happen.  Really inspiring.
"I'm telling you Donnie, nuthin' but nuthin' but right"

Offline goodoltup

  • Posts: 118
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Re: Project CB690 (KTM 690 engine in a CB550f frame)
« Reply #174 on: May 04, 2019, 17:42:33 »
I do think that changing the fender angle helps, see below. Also I have sourced a Lucas style tail lamp that seems to work ok with that flatter angle. I did find a turn signal that I like, but unfortunately it is so cheaply made that I don't think it is useable. But I do like the shape and size. You can also see that I've sourced a battery as well, getting ready for actually testing the harness.

Offline goodoltup

  • Posts: 118
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Re: Project CB690 (KTM 690 engine in a CB550f frame)
« Reply #175 on: May 04, 2019, 17:47:35 »
I got the cheapest kitchen cabinets from Wickes and put them up today. 210 all in. They are garbage, but will be perfect for garage duty. I didn't bother too much about getting all the doors aligned etc.

Offline goodoltup

  • Posts: 118
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Re: Project CB690 (KTM 690 engine in a CB550f frame)
« Reply #176 on: May 04, 2019, 18:08:24 »
Shop buddy is dying. I took it inside so my wife can nurse it back to health.
I will do more work on the bike in the coming weeks, but this weekend probably not. I did order a stainless steel front fender that I will show when it arrives.

Offline doc_rot

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Re: Project CB690 (KTM 690 engine in a CB550f frame)
« Reply #177 on: May 07, 2019, 03:15:13 »
I do think that changing the fender angle helps, see below. Also I have sourced a Lucas style tail lamp that seems to work ok with that flatter angle. I did find a turn signal that I like, but unfortunately it is so cheaply made that I don't think it is useable. But I do like the shape and size. You can also see that I've sourced a battery as well, getting ready for actually testing the harness.

those look very simular to the turn signals I have on my Kawasaki's, except the ones I have are well constructed. I have used them on many bikes.
 about halfway down the page.
http://www.airtech-streamlining.com/miscpages/lights.htm

Offline 1fasgsxr

  • Posts: 1669
Re: Project CB690 (KTM 690 engine in a CB550f frame)
« Reply #178 on: May 07, 2019, 13:33:25 »
Your shop friend needs a bigger pot.
http://www.dotheton.com/forum/index.php?topic=41083.0

Life is a journey from the maternity ward to the crematorium....

Offline Jimbonaut

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Re: Project CB690 (KTM 690 engine in a CB550f frame)
« Reply #179 on: May 07, 2019, 13:51:03 »
Does shop buddy's pot have drainage? 
"I'm telling you Donnie, nuthin' but nuthin' but right"