It is Thursday, right?

newmann
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newmann
Edited Date/Time 3/27/2015 7:21am
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Sidecar
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Sidecar 3/26/2015 11:15am
3/26/2015 11:15am
You know how some things just look right....
IWreckALot
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IWreckALot 3/26/2015 11:17am
3/26/2015 11:17am
Is that a scalvini pipe? Or is it just an old school pipe?

I want one of those for my Yz250 but they're quite pricey.

The chain is on the wrong side and I believe that is a drum brake on the back? Oh and the forks are ass backwards.

Seat looks monkey butt friendly though.
GuyB
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GuyB 3/26/2015 11:18am
3/26/2015 11:18am
Beauty.

The Shop

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Rooster
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Rooster 3/26/2015 11:19am
3/26/2015 11:19am
It never ceases to amaze me how those old Honda factory machines could have so much technology. Even with the ribi-lever front end and then still use drum brakes.
motomx88
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motomx88 3/26/2015 11:35am
3/26/2015 11:35am
newmann wrote:
[img]http://pjlarsenracing.com/wp-content/uploads/2014/01/honda-celebrates-the-40th-anniversary-of-supercross-at-anaheim-ii-with-special-machines-and-honda-heroes1.jpg[/img]
I'm not a Honda fan but thats just as bad ass as a bike can get. Best color of all the Hondas. Brings back a lot of great childhood memories.
Francis377
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Francis377 3/26/2015 12:06pm
3/26/2015 12:06pm
When I see these threads, I always Wonder if 40yrs from now when my friends and I will hopefully be dominating the vet classes, someone will post a pic of a 2015 Honda and everyone will go like "those were the days.."
ATKpilot99
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ATKpilot99 3/26/2015 12:16pm
3/26/2015 12:16pm
Francis377 wrote:
When I see these threads, I always Wonder if 40yrs from now when my friends and I will hopefully be dominating the vet classes, someone will...
When I see these threads, I always Wonder if 40yrs from now when my friends and I will hopefully be dominating the vet classes, someone will post a pic of a 2015 Honda and everyone will go like "those were the days.."
Yep . You'll be sitting there with your bike on the charger saying, "remember internal combustion engines ?"
Steadman
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Steadman 3/26/2015 12:28pm
3/26/2015 12:28pm
That my moto friends is bike porn.

Thanks for sharing.
Falcon
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Falcon 3/26/2015 12:31pm
3/26/2015 12:31pm
IWreckALot wrote:
Is that a scalvini pipe? Or is it just an old school pipe? I want one of those for my Yz250 but they're quite pricey. The...
Is that a scalvini pipe? Or is it just an old school pipe?

I want one of those for my Yz250 but they're quite pricey.

The chain is on the wrong side and I believe that is a drum brake on the back? Oh and the forks are ass backwards.

Seat looks monkey butt friendly though.
I bet that's an HRC pipe, hand-welded by a Japanese guy who did 10 of them. Those 10 were probably the only ones of their kind, and were crushed along with the bike when it was done racing for the year.


Can anyone remember or confirm that the fork sliders are magnesium? Damn, that's trick.
newmann
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newmann 3/26/2015 12:31pm
3/26/2015 12:31pm
Some Vitards collection of old junk. I could have hid out there for a week. Like the kid living behind the diapers at Wal Mart.....

Can any of you keyboard engineers figure out what happens and what doesn't happen when you stomp on the rear brake?









TeamRags
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TeamRags 3/26/2015 12:32pm
3/26/2015 12:32pm
Francis377 wrote:
When I see these threads, I always Wonder if 40yrs from now when my friends and I will hopefully be dominating the vet classes, someone will...
When I see these threads, I always Wonder if 40yrs from now when my friends and I will hopefully be dominating the vet classes, someone will post a pic of a 2015 Honda and everyone will go like "those were the days.."
You'll be like "remember when we used to ride those 450 4 strokes!
newmann
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newmann 3/26/2015 12:35pm
3/26/2015 12:35pm
brocster wrote:
[img]https://p.vitalmx.com/photos/forums/2015/03/26/85200/s1200_bailey.jpg[/img] fixed






fixed
Please fix that deformity of mankind. Now! Make it go away. Damn kids, get off my lawn.
newmann
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newmann 3/26/2015 12:41pm
3/26/2015 12:41pm

No one commenting on the subframe/airbox yet? All those Honda engineers had to find something to do when the F1 programs were winding down. S L U R P




Or how about that lowboy tank. So low they had to pump fuel up to the carb.



Air for the airbox? Check.










Francis377
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Francis377 3/26/2015 12:47pm
3/26/2015 12:47pm
Francis377 wrote:
When I see these threads, I always Wonder if 40yrs from now when my friends and I will hopefully be dominating the vet classes, someone will...
When I see these threads, I always Wonder if 40yrs from now when my friends and I will hopefully be dominating the vet classes, someone will post a pic of a 2015 Honda and everyone will go like "those were the days.."
ATKpilot99 wrote:
Yep . You'll be sitting there with your bike on the charger saying, "remember internal combustion engines ?"
I hope not. Might have to hide one away just to be sure Smile
SouthwestMfg
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SouthwestMfg 3/26/2015 1:01pm
3/26/2015 1:01pm
1982 I still think the bikes (Honda) that year were so far ahead in terms of ideas / technology. The rear linkage is supposed to make the rear want to "squat" under breaking (kinda what Yamaha tried to do, and failed, with BASS). I think a lot (1/2 ?) their riders did not use it, most went back to the floating break. That monocoque sub-frame was really cool, I think they just recently patent something like that for the current CRF's ?. As trick as that bike was Kawasaki was the only mfg. trying disk brakes by 82. The other thing to keep in mind is that Ricky Johnson was regularly beating Donny Hansen on his production Yamaha 250. Yeah the bike with the radiator on the forks and all, and that bike was more stock than anything the factory teams are riding today. He also was finishing ahead of Broc and Scott on the "works" 250's.

Pit Row

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UpTiTe
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UpTiTe 3/26/2015 1:33pm
3/26/2015 1:33pm
newmann wrote:
[img]http://pjlarsenracing.com/wp-content/uploads/2014/01/honda-celebrates-the-40th-anniversary-of-supercross-at-anaheim-ii-with-special-machines-and-honda-heroes1.jpg[/img]
I rode that bike.
UpTiTe
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UpTiTe 3/26/2015 1:36pm
3/26/2015 1:36pm Edited Date/Time 3/26/2015 1:37pm
newmann wrote:
Some Vitards collection of old junk. I could have hid out there for a week. Like the kid living behind the diapers at Wal Mart..... Can...
Some Vitards collection of old junk. I could have hid out there for a week. Like the kid living behind the diapers at Wal Mart.....

Can any of you keyboard engineers figure out what happens and what doesn't happen when you stomp on the rear brake?









I was there one of the times they were testing it and it was explained to me that it kept the back wheel on the ground and tracking and didn't pack the shock under hard breaking. There were different levers for different feels and apparently it worked good, they all eventually used it.
GATOR
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GATOR 3/26/2015 3:58pm
3/26/2015 3:58pm
Rooster wrote:
It never ceases to amaze me how those old Honda factory machines could have so much technology. Even with the ribi-lever front end and then still...
It never ceases to amaze me how those old Honda factory machines could have so much technology. Even with the ribi-lever front end and then still use drum brakes.
If you didn't like drum brakes, you just had to wait for one year...



GATOR
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GATOR 3/26/2015 4:07pm
3/26/2015 4:07pm
Falcon wrote:
I bet that's an HRC pipe, hand-welded by a Japanese guy who did 10 of them. Those 10 were probably the only ones of their kind...
I bet that's an HRC pipe, hand-welded by a Japanese guy who did 10 of them. Those 10 were probably the only ones of their kind, and were crushed along with the bike when it was done racing for the year.


Can anyone remember or confirm that the fork sliders are magnesium? Damn, that's trick.
Yes they are. Then again, so were the ones on my '78 Puch Frigerio's ZT1 Marzocchi...
Wink



Rooster
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Rooster 3/26/2015 4:10pm
3/26/2015 4:10pm
newmann wrote:
Some Vitards collection of old junk. I could have hid out there for a week. Like the kid living behind the diapers at Wal Mart..... Can...
Some Vitards collection of old junk. I could have hid out there for a week. Like the kid living behind the diapers at Wal Mart.....

Can any of you keyboard engineers figure out what happens and what doesn't happen when you stomp on the rear brake?









It didn't have much impact on the brakes per se, but as the swingarm moved upwards the rear wheel would rotate forward slightly to help it through the tops of braking bumps.

It's an awful lot of added sprung weight for very little benefit IMO.
GATOR
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GATOR 3/26/2015 4:28pm
3/26/2015 4:28pm
Was supposed to limit the dribbling of the wheel when braking. Very sophisticated, not very efficient, didn't last for long.
olds cool
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olds cool 3/26/2015 5:55pm
3/26/2015 5:55pm
brocster wrote:
[img]https://p.vitalmx.com/photos/forums/2015/03/26/85200/s1200_bailey.jpg[/img] fixed






fixed
Blasphemy I say! A KTM fender doesn't belong on a hand built work of HRC art.
The only part of "fixed" you got right is the first letter. Tongue
Bearuno
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Bearuno 3/26/2015 11:51pm
3/26/2015 11:51pm
newmann wrote:
Some Vitards collection of old junk. I could have hid out there for a week. Like the kid living behind the diapers at Wal Mart..... Can...
Some Vitards collection of old junk. I could have hid out there for a week. Like the kid living behind the diapers at Wal Mart.....

Can any of you keyboard engineers figure out what happens and what doesn't happen when you stomp on the rear brake?









A Floating Rear Brake - by any other name.

But, a Very fancy / trick one:

The rocker enables easy adjustment of the level of torque delivered to the frame / swingarm, thence the suspension.

You can engineer into such a design, easy, easy adjustment for 'pro squat / anti squat' / or near neutrality. And damned near anything in between those 'ideals'. The rocker being easily replaced, with different leverage ratios, plus in its 'attitude' - eg: see how the 'push' arm from the brake is at the top, and the 'pull' arm is at the bottom - well, you could set it up the opposite way, with , as I said, a variety of leverage ratios on the link, and various 'clockings' of the link.

By being on top of the swingarm, it also has the benefit of not being exposed to impacts - I'm sure plenty of older blokes here like me, had the traditional low slung floating brake torque arms bent from inpacts, or, indeed, bent from rolling backwards, and the arm bending fron compressive loads.

Floating rear brakes have a lot of validity still, but you just don't see them being used on MXers / Offroaders now. Why? - well, in what are low braking traction situations / uses where the rear wheel spens a lot of time off of the ground no matter how good your suspension is. the added complication just doesn't outweigh the benefits. At least the engineers / manufacturers don't deem it worthwhile. Even the relative simplicity of just the three extra bearings / pivot points a conventional floating rear brake brings to a rear end.

But, you'll note, you rarely see a high level Road Race bike without a floating rear brake - by comparison to a dirt bike, you've got a near perfect traction medium : tar (please note, I did write 'near perfect') and your rear wheel is, mostly, on the ground.

Trick indeed - I may put a top pivot point on the complete swingarm I will eventually make, to replace the 'upside down' std swingarm I have on my PDS'd CR, just to play with the system.

Thanks for putting such pictures up, Newman. I've a bit of an obssession with lowering the fuel load on bikes, and make alloy drop tanks for steel framed CR500s - they certainly are very involved, especially when you are going for as much fuel as possibe, whilst keeping things slim, and low ( far, far lower than a std tank) at the top. Heres an underneath picture of one of my tanks, it quite literally wraps around the barrel: I don't make them to look like the old RCs - I make them to take 2002 / 2007 CR125 /250 radiator shrouds.A Mikuni vacuum fuel pump is mounted to the tank, to get fuel up imto the RH side, from the low LH side.


LH side:

RH side :

These are just build pictures - the welds are linished smooth (and, the foward 'ears' are one piece on production tanks) , and the LH side goes even further down than this picture shows, now.The KS lever you can see, is a very short Gas Gas one I use, so my leg doesn't have to bend to much to get on the lever. An auto decomp makes a short lever easily start the bike.
mayzo
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mayzo 3/27/2015 1:06am
3/27/2015 1:06am


Air cooled, Drum Brake Yamaha or Water-cooled, Disc Braked Honda?
GATOR
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GATOR 3/27/2015 5:29am
3/27/2015 5:29am
The Yamaha actually beat the Honda, that year... Kudos to Carlqvist!

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