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Author Topic: CB450 Tracker  (Read 17150 times)

Offline LiamG6

  • Posts: 19
Re: CB450 Tracker
« Reply #70 on: Jan 24, 2018, 21:53:24 »
I don't think it would be a showstopper, but it may accelerate wear in the long run. Provided the oil pressure is enough to force oil through the helical spiral despite the rotation of the cam sort of pushing oil in the wrong direction I think it would actually work fine, just something to keep an eye on. I think trying to mess around in there with a dremel might lead to worse problems. The people who normally make this switch convert to needle bearings so it isn't an issue for them but that is a costly and unnecessary change for a street bike.

Look forward to any updates mate.

Offline Pete12

  • Posts: 257
Re: CB450 Tracker
« Reply #71 on: Feb 05, 2018, 03:51:11 »
I don't think it would be a showstopper, but it may accelerate wear in the long run. Provided the oil pressure is enough to force oil through the helical spiral despite the rotation of the cam sort of pushing oil in the wrong direction I think it would actually work fine, just something to keep an eye on. I think trying to mess around in there with a dremel might lead to worse problems. The people who normally make this switch convert to needle bearings so it isn't an issue for them but that is a costly and unnecessary change for a street bike.

Look forward to any updates mate.

Thanks for the comments Liam, I'd probably set the die grinder up in the lathe and do it that way, but as I'm a while away from building the engine I'll just give it some thought in the meantime

The Christmas hiatus is well and truly over and my seat arrived last week so it's time to get cracking again. The seat is well made and just the right size so I will cut the rear loop off next. I will position the seat and tank so that they match up properly, and then go ahead and make the new loop, incorporating the top shock mounts at the same time.
https://i.imgur.com/Y1IxRtW.jpg[/img]]

I wasn't happy with the exhaust pipe between the collector and the megaphone, the bend wasn't too good and the seam in the straight pipe was facing the outside, so I made up a new one and it looks a lot better, IMO.
https://i.imgur.com/UDsMNY2.jpg[/img]]

I made a S/S endcap for the megaphone and a baffle for inside. I'll pack it with fibreglass which should result in a nice throaty exhaust note when it's finished.
https://i.imgur.com/cYNcyGL.jpg[/img]]
https://i.imgur.com/2HEyU0f.jpg[/img]]
https://i.imgur.com/HxOlrk8.jpg[/img]]

Just need to buff the endcap and make a rear mounting bracket for the pipe and give it a coat of pot belly black and it'll be ready to go.

Offline Pete12

  • Posts: 257
Re: CB450 Tracker
« Reply #72 on: Feb 08, 2018, 16:54:13 »
Waiting to get the tube for the rear loop so I made the bung and cap for the tank. The bung needs to go in before the tank tunnel is fitted up as I'm going to braze it from underneath.


Offline Pete12

  • Posts: 257
Re: CB450 Tracker
« Reply #73 on: Feb 08, 2018, 22:39:09 »
Cut off the rear of the frame today, ready to make the new rear loop. First, though, I will get the tank tunnel and mounts fabricated and installed. Once the tank is at the correct height I can then fabricate and position the loop so the tank and seat flow together nicely. Once that's finished I can fabricate and install upper and lower shock mounts and then chase up some new shocks. Thinking about going with Ikons, they are reasonably priced with plenty of adjustment and look well manufactured. Anyone have any experience with them, good or otherwise?

Offline irk miller

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Re: CB450 Tracker
« Reply #74 on: Feb 09, 2018, 07:18:09 »
My experience is with Kona, which are excellent shocks I have on my R100/7.  Kona is now Ikon. 

Offline Pete12

  • Posts: 257
Re: CB450 Tracker
« Reply #75 on: Feb 09, 2018, 08:10:57 »
That's a good recommendation coming from you Irk, that'll do me, thanks.

Offline Pete12

  • Posts: 257
Re: CB450 Tracker
« Reply #76 on: Feb 12, 2018, 04:32:30 »
Salvaged the rear tubes out of the old back end. They originally turned in a small amount to end up inside the top shock mounts.
https://i.imgur.com/OIRxkCt.jpg[/img]]

I drilled out the spot welds and ground off two small tack welds to release the tubes from the junction with the seat loop and the shock mounts.
https://i.imgur.com/z2RoJWn.jpg[/img]]

I then machined two adaptors that will eventually be plug and joint welded.
https://i.imgur.com/n55YEYK.jpg[/img]]

The tubes will now  be rotated 45o forward and will meet up with the new seat loop. The top shock mounts will now be in line with the seat loop in the conventional manner.

Offline Pete12

  • Posts: 257
Re: CB450 Tracker
« Reply #77 on: Feb 13, 2018, 04:54:24 »
My new Bridgestone 350 fuel tap arrived today. The quality looks good and it operates nice and smoothly so it should be good
https://i.imgur.com/OZLPrRp.jpg[/img]]

I got this one because, after narrowing the tank, I have fairly limited room available. This one is good because it's fairly squat and both the discharge pipes are in the horizontal plane which will make it easy to thread the fuel lines.
https://i.imgur.com/xUNBHki.jpg[/img]]

The mounting thread is M22 x 1.0 so I had to machine and thread a new stub for the tank. I'll braze this in at the same time I do the filler bung and then I can go ahead and finish the tank tunnel.
https://i.imgur.com/FIMnnrh.jpg[/img]]

https://i.imgur.com/jLp2prj.jpg[/img]]

« Last Edit: Feb 13, 2018, 05:11:08 by Pete12 »

Offline Pete12

  • Posts: 257
Re: CB450 Tracker
« Reply #78 on: Feb 15, 2018, 03:54:58 »
Brazed in the tank filler neck and filled the holes for the tap and balance pipes. The tap will go back in the same place but with a bigger stub and I've relocated the balance pipes to the front of the tank. This is all a result of narrowing the tank but it should all work out fine. The tank sits level so the balance pipes at the front won't have any adverse affect at all.
https://i.imgur.com/Qhc9T9I.jpg[/img]]
https://i.imgur.com/totchQX.jpg[/img]]

I made the tunnel and tacked it into position and will finish welding it tomorrow. It will be interesting to see how much fuel it now holds. Standard is around 4.5 US gallons, if I end up with three I think it will be OK. I still have to make a couple of patch panels, but once that's done I can mount it up.
(The tunnel is in the centre, it's just the photo angle that makes it look like it's not)
« Last Edit: Feb 15, 2018, 03:57:21 by Pete12 »

Offline teazer

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Re: CB450 Tracker
« Reply #79 on: Feb 15, 2018, 10:56:50 »
My experience is with Kona, which are excellent shocks I have on my R100/7.  Kona is now Ikon. 

Perfect for a cafe racer......   :-)


I suspect autocorrect changed Koni into Kona .