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Author Topic: Jared's 1982 CM450C Cafe Project  (Read 25054 times)

Offline cobraace2

  • Posts: 284
Re: Jared's 1982 CM450C Cafe Project
« Reply #30 on: Apr 16, 2014, 12:40:34 »
It's been a while since I've dropped by this place, but glad I did. Shit you guys do is fucking cool and always such an inspiration.  How's this going anyway?


Ended up here, looking into fork replacement for my 82 cm450c, btw.


Donít  how hes doing but mine is a bout to be an organ donor ;D unless you want to buy it 8)

Offline rattpunk

  • Posts: 229
Re: Jared's 1982 CM450C Cafe Project
« Reply #31 on: Apr 18, 2014, 18:36:28 »
Yeah, think mine will be going to scrap. Hit the back of a van in SF. Front forks, headlamp, clipons, and other little bits are trashed, but rear frame damage is the nail in the coffin. Coule cut and weld, but have nowhere to work on it and no welding equipment...


The one day I decide to ease up on the lane-splitting too... fuck city traffic.


Was thinking of full rebuild, but honestly the bike was fun and learned a lot working on it think it's time to move on to the next.


So, looks like there are two CM450Cs donors out there for anyone reading this.


I'll be putting up a post with pics and info this Saturday. Then a Criagslist add sometime next week.


oh, and sorry to derail the thread  :P  Looking forward to updates!!
"A problem well stated is a problem half solved." - Charles Kettering

Mongrel cm450

Offline jaredc7

  • Posts: 60
  • Get busy living.
Re: Jared's 1982 CM450C Cafe Project
« Reply #32 on: Jun 25, 2014, 22:06:01 »
Finally back to working on the bike after new work responsibilities and a couple months of being distracted with other projects around the house. Here's the rear monoshock conversion top mounts!

I just used cardboard and scissors to get the right profile to match the frame. Then I made a bracket out of wood with the cardboard templates, a jigsaw, and a sander. Then made the two steel brackets with a port-a-band and a grinder. All-in-all, not nearly as difficult as re-designing the suspension geometry. It took a lot of calculations, but this final setup should be the one. I'll tack-weld the mounts on, put the motor and everything on the bike, see where it sits, and adjust from there if necessary.
Jared

1982 Honda CM450 C

Offline jaredc7

  • Posts: 60
  • Get busy living.
Re: Jared's 1982 CM450C Cafe Project
« Reply #33 on: Jul 02, 2014, 14:35:33 »
It's been a while since I've dropped by this place, but glad I did. Shit you guys do is fucking cool and always such an inspiration.  How's this going anyway?


Ended up here, looking into fork replacement for my 82 cm450c, btw.

Thanks Rattpunk. I probably got way in over my head for my first Cafe Build. But, when someones says "...definitely do NOT use a single swing arm, especially with an early 1980's 450cc bike", I can't help myself!!!

I'm just about to weld on the top mount for the rear monoshock conversion. Should look pretty sweet. The only other issue I've had is that the swing arm pushed the rear sprocket out about 5/8" from the front sprocket. But I found a shop in Oregon that made me a custom offset front sprocket. Hoping to get a bike that actually rolls around here in a couple weeks!
Jared

1982 Honda CM450 C

Offline jaredc7

  • Posts: 60
  • Get busy living.
Re: Jared's 1982 CM450C Cafe Project
« Reply #34 on: Dec 12, 2014, 21:06:35 »
Here's some new pictures for some work I've done over the past few months. Really feel like I'm making some headway now.

PS - The guy welding is a millwright/motorcycle enthusiast that I work with... I'm 32 and most of my hairs are brown, and he's been welding longer than I've been alive!
« Last Edit: Dec 12, 2014, 21:08:59 by jaredc7 »
Jared

1982 Honda CM450 C

Offline jaredc7

  • Posts: 60
  • Get busy living.
Re: Jared's 1982 CM450C Cafe Project
« Reply #35 on: Dec 12, 2014, 21:14:38 »
Here's a dry-assembly I did a couple months ago.

I have been working on the rear brakes right now, which is proving to be another very difficult hill to climb. I elected to use the VFR750 5-spoke rear wheel. And since the rear axle/spindles are nearly interchangeable it's been an easy swap. That is, until I tried to mesh the VRF750 rear disc brake with the Hawk NT650 rear caliper. Not so easy! I'm getting a new caliper bracket CNC'd next week though. should be exciting.

Hawk to VFR wheel conversion - http://www.hawkland.de/beatty/VFR_Whl.html
Jared

1982 Honda CM450 C

Offline xb33bsa

  • Posts: 7726
Re: Jared's 1982 CM450C Cafe Project
« Reply #36 on: Dec 12, 2014, 21:19:01 »
you still need some very substantial outboard support on the swinger pivot and strengthening of the frame between the swinger pivot and top shock mount


Offline jaredc7

  • Posts: 60
  • Get busy living.
Re: Jared's 1982 CM450C Cafe Project
« Reply #37 on: Dec 12, 2014, 21:33:49 »
you still need some very substantial outboard support on the swinger pivot and strengthening of the frame between the swinger pivot and top shock mount



You're absolutely right. I'll be taking care of that with the brackets for my rear set pegs. I already have the plates made, but figuring out the right-hand side with the brake pedal will be tricky. Definitely planning to put stiffeners on the outside of the swing arm though. Great catch
Jared

1982 Honda CM450 C

Offline cxman

  • DTT SUPPORTER
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  • Posts: 2653
Re: Jared's 1982 CM450C Cafe Project
« Reply #38 on: Dec 13, 2014, 12:03:35 »
the frame has been welded and ground down on both side in 2 spots each side

near where you put the swingarm if those welds crystallized and or were ground down to much

then the frame is essentially been cut in half 

i would consider jack plating the sides of the frame if not making a wrap around stiffener   
1978 CX650 Super Deluxe
1979 XS1100 Special
1974 xl350
1983 cx650 Custom
1973 cb750
1980 cb750
1981 cb650
1982 cb900 c
1974 kawasaki 350 bighorn
1983 GL1100 aspy full dress
1983 GL1100 Nekid
and a bunch of others

Offline jaredc7

  • Posts: 60
  • Get busy living.
Re: Jared's 1982 CM450C Cafe Project
« Reply #39 on: Sep 04, 2015, 16:08:46 »
So since last December, I got engaged, married, moved into a new house, and just now picking the porject back up!!! It has been a long 8 months with no motorcycle work in my life, but a super-smart and talented buddy of mine helped me get some momentum again. Here are some pictures from the last 2 weekends!
1.) Remove move "structural" parts deemed "non-essntial". Lighter and faster now! (
2.) Mock up bike so we know what the hell we're working on.
3.) Mock up foot control backets with cardboard, then plywood, and get right foot positioning.
4.) 3/4" tubing (1/16" wall thickness) for stiffeners for the outside of the swingarm to the chassis
5.) Plasma cut some new brackets and machine the swing arm bolt to fit!!
Jared

1982 Honda CM450 C