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Author Topic: '74 CB383 (CB360) - a Mighty Mouse adventure bike  (Read 21739 times)

Offline Treesus

  • Posts: 69
  • Probably not sane.
    • Half Day Around
Re: '74 CB383 (CB360) - a Mighty Mouse adventure bike
« Reply #20 on: Feb 03, 2013, 19:13:34 »
Thanks for all the info on the splash/windage plates, everyone.

Beautiful flying weather out here in St Mary's. Only 20*F and pretty clear. BUT... I can't wait to get off shift and work on the bike.

Been perusing rim options. I think I'm going to go 2.15" wide on the front, 2.50" on the rear. Though I'm not a huge fan of chrome (overused, I think), I do like the look of my stock chrome rims. I'm looking at aluminum for replacements, though. Trying to decide if silver will look nice enough, or if I should just go black. Hmmm.
~Tree

CB360 Adventure build http://www.dotheton.com/forum/index.php?topic=43834.20

"I think it says in the Bible that there is a time to listen to techno, and a time not to." -Joe Strummer

Offline Treesus

  • Posts: 69
  • Probably not sane.
    • Half Day Around
Re: '74 CB383 (CB360) - a Mighty Mouse adventure bike
« Reply #21 on: Feb 19, 2013, 03:19:15 »
Finally back in Anchorage.

I picked up the frame and other various bits from the powder coater today. He did an alright job. I'm not blown away with it, that is for sure. Colors turned out pretty damn nice at least.
So, with the swingarm back, I put in the new bushings. I was worried this would be a royal pain in the arse but it went very smoothly. I put the bushings in the freezer for about 8 hours and heated up that part of the swingarm with a ceramic heater, then tapped them in with a rubber mallet. Cake.


Not sure if the baking did this or if the guy somehow crushed it. Trying to think of a good way to gently bend it back.


Putting copper coat on the copper base gasket (from Copper Gaskets Unlimited - Lani is awesome to work with).


Cross-hatching in the cylinder bore. Very nice bore-job, so far as I can tell.


Installed the rings, and pistons, then put the jugs back on. I feel like I am making progress towards something that will run one day! Or maybe just explode. Hopefully run though.
« Last Edit: Feb 19, 2013, 14:40:02 by Treesus »
~Tree

CB360 Adventure build http://www.dotheton.com/forum/index.php?topic=43834.20

"I think it says in the Bible that there is a time to listen to techno, and a time not to." -Joe Strummer

Offline Treesus

  • Posts: 69
  • Probably not sane.
    • Half Day Around
Re: '74 CB383 (CB360) - a Mighty Mouse adventure bike
« Reply #22 on: Feb 20, 2013, 00:02:48 »
Chipping away.

Laced up my first rim (ever) today. I only had to redo it once. First time I had the pattern correct but the angles too shallow which left me with spokes that were too long. Whoops. Anyhow, new front rim. 18x2.15

I used PJ's idea for doming some washers to make the nipples fit in the MX rim nipple holes. Worked quite well. The washers are 7mm, with the smallest OD I could find. I just placed them on the nipples, used a 12mm socket (the inside of mine has a nice curve that matches the nipple fairly well) and gave it a few whacks with the hammer until they wouldn't bend anymore.





Pretty simple.





Its not trued yet. Can you fine tune the truing after the tire is one or is it best done before and rechecked afterwords? Never dealt with it before.
~Tree

CB360 Adventure build http://www.dotheton.com/forum/index.php?topic=43834.20

"I think it says in the Bible that there is a time to listen to techno, and a time not to." -Joe Strummer

Offline Treesus

  • Posts: 69
  • Probably not sane.
    • Half Day Around
Re: '74 CB383 (CB360) - a Mighty Mouse adventure bike
« Reply #23 on: Feb 20, 2013, 06:29:59 »
Lacing up the rear rim and hub is not panning out quite as well. Despite the oversized nipple holes, the spoke angle seems to be a bit too steep which is putting a barely perceptible bend in a few of the spokes.

Also the spokes are somehow a bit too long even with the washers (I've checked the spoke pattern). This doesn't make any sense to me. Only possible cause I could think is that maybe the raised center of the rim is taller than the stock rim. Strange the front rim didn't have this problem though.

Anyhow, is it safe to just grind the sides of the hole to achieve the steeper spoke angle and stack on a second washer or would this be unstable and risk cracking the rim?
~Tree

CB360 Adventure build http://www.dotheton.com/forum/index.php?topic=43834.20

"I think it says in the Bible that there is a time to listen to techno, and a time not to." -Joe Strummer

Offline crazypj

  • Posts: 13119
  • Split personality, I fake being smart
Re: '74 CB383 (CB360) - a Mighty Mouse adventure bike
« Reply #24 on: Feb 20, 2013, 08:38:57 »
Brendon built his wheels last night, I'll true them for him in next day or so (I already started on front )
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline Treesus

  • Posts: 69
  • Probably not sane.
    • Half Day Around
Re: '74 CB383 (CB360) - a Mighty Mouse adventure bike
« Reply #25 on: Feb 24, 2013, 05:00:38 »
Took me a few days of cursing and running between my house and Home Depot but I finally got the rear wheel solidly put together and both of them trued. Rear wheel was having issues with spoke angle. I think the problem was a combination of the Excel rear rim being a good bit thicker than the other as well as the center being raised more than stock rim.

Spent a lot of time very carefully taking very small amounts of metal off in strategic locations with a router bit and a file. Then added a brass washer to each (hub is effectively closer to the rim because of the raised center and I didn't have enough spoke adjustment).

That is before both washers were in place. had the keep the wheel together for fitting and checking as I was filing.

Anyhow, with the wheels assembled, I thought I'd see how the look is coming along.


~Tree

CB360 Adventure build http://www.dotheton.com/forum/index.php?topic=43834.20

"I think it says in the Bible that there is a time to listen to techno, and a time not to." -Joe Strummer

Offline edukaycheon

  • Posts: 228
    • My pseudoblog
Re: '74 CB383 (CB360) - a Mighty Mouse adventure bike
« Reply #26 on: Feb 24, 2013, 05:18:49 »
Triple tree paint looks great
“Seize the day guys - don’t say “Can I , can’t I” - just do it anyway and see what the results are. After fifty odd years of making those kinds of decisions, you will ALL have your own ‘Tales from the day’.
I’m still at it, buying toys I can’t really afford or getting out there and indulging my whims, but you find a way.

Let me assure you - there’s nothing worse than looking at maybe another fifteen or twenty years of life and looking back and saying “If only”. Don’t listen to the “Can’t be done” assholes - not, at least until you’ve tried it for yourself.

There’s NO point in regretting past decisions - they’re done, just take the results of that decision and run with it.” - Beachcomber


http://www.dotheton.com/forum/index.php?topic=45042.0  -  CB360...I want to ride again!

http://i.imgur.com/xLptvnG.gif

Offline sourjon

  • Posts: 18
Re: '74 CB383 (CB360) - a Mighty Mouse adventure bike
« Reply #27 on: Feb 24, 2013, 09:01:27 »
Love the cream color. Don't know about the yellow...have to see the whole thing but it has a nice stance to it.

John

Offline crazypj

  • Posts: 13119
  • Split personality, I fake being smart
Re: '74 CB383 (CB360) - a Mighty Mouse adventure bike
« Reply #28 on: Feb 24, 2013, 09:01:30 »
Well,I'm liking the white and yellow  8)
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline Treesus

  • Posts: 69
  • Probably not sane.
    • Half Day Around
Re: '74 CB383 (CB360) - a Mighty Mouse adventure bike
« Reply #29 on: Feb 25, 2013, 03:54:47 »
Thanks, everyone.

Well, I am a bit worried about my valves.

I was cleaning up the head. Decided to shave a wee bit out of the exhaust ports. I remember reading somewhere (I assume PJ?) that they could stand to lose 1-2mm. I didn't take off much.

Also decided to Molykote the top and bottom Camshaft journals. Should help to fill in a few of the shallow scores and add some slipperiness. Plus I had it sitting around from the pistons.


Then I was cleaning up the valves when I noticed a few things. The Exhaust valves were marked L and R. At first I figured this was part of the seating... But then I noticed the heads on both had a very slight angle to the stem? This has got me a bit stressed out. Are they supposed to be that way? Or do I need to find some new exhaust valves?

I tried fitting them. As you can see in the first photo, there is a large gap. Obviously not going to seal at all. Turned roughly 180*, the gap goes away. Seems there is just a gap on the other side, though it is harder to tell. Input?




Set up on the head you can see both exhaust valves have a slight lean, where as the intake valves stand straight up.


Help?

~Tree

CB360 Adventure build http://www.dotheton.com/forum/index.php?topic=43834.20

"I think it says in the Bible that there is a time to listen to techno, and a time not to." -Joe Strummer