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General Category >> Rubber Side Down! >> Rocker Arms
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Message started by Armen on 09/30/19 at 20:26:40

Title: Rocker Arms
Post by Armen on 09/30/19 at 20:26:40

I really do need to get a life....

Title: Re: Rocker Arms
Post by Armen on 09/30/19 at 20:27:32

After a year or two break, finally getting to the other one...

Title: Re: Rocker Arms
Post by Armen on 09/30/19 at 20:28:50

Now I just need to remember how they all go together. Can't believe there is no direct oiling for the rocker arms (unless I'm missing something).

Title: Re: Rocker Arms
Post by justin_o_guy2 on 09/30/19 at 21:15:00

But why?

Title: Re: Rocker Arms
Post by Ruttly on 09/30/19 at 22:38:59

Yes you are sick and there is no cure. So , as you were , keep up the good work , Outstanding !

Title: Re: Rocker Arms
Post by Ruttly on 09/30/19 at 22:44:27

I Know it doesn't matter but did you weigh them !
After all that work , just to see how close they are.

Title: Re: Rocker Arms
Post by Ruttly on 09/30/19 at 22:45:46

He's weighing them now. ;D

Title: Re: Rocker Arms
Post by ohiomoto on 10/01/19 at 06:20:54

2A353334292E1F2F1F27353972400 wrote:

But why?

--------------

Every gram counts!! Amen is going to have that thing down to 200 lbs if he keeps this up.

I'm looking forward to seeing it finished. I can't wait for Ruttly to post a picture of his bike(s) either. ;)

Title: Re: Rocker Arms
Post by Armen on 10/01/19 at 06:32:06

Actually, this one wasn't about weight. My spiritual inspiration for this build were the Italian GP singles of the late 50's-early 60's. According to Kevin Cameron, the high water mark was the 1963 Moto Morini 250. A 250, two valve single that came within two points of championship winner Jim Redman on a 4 valve 250cc 6 cylinder.
The bike was around 250 lbs and around 37 HP.
I'll get close. Maybe 280 lbs.
Those guys didn't have a fraction of the R+D money and facilities that Honda had. All they had was crazy determinism and skilled labor.
Oftentimes every little part was lightened as much as possible, and polished.
Easiest way to make fast was to make light.
Polishing served two functions-it removed surface irregularities and machining marks which could be starting points for cracks, and it made for smoother/easier movement of the parts.
So, not at all needed in this case, and no real weight lost.
Just an offering to altar of the Gods of Speed ::)

Title: Re: Rocker Arms
Post by LANCER on 10/01/19 at 13:43:38

Polished metal parts are not only pleasing to the eye, but they feel good in the hands as well; sensuous curves and all.
YEP

Title: Re: Rocker Arms
Post by Dave on 10/02/19 at 12:53:05

I have seen some photos of Burt Munro's land speed record Indian engine/transmission........and he had cut the width of the gears way down, and his rocker arms were spindly! All in an effort to get stuff light and able to move easier.

Title: Re: Rocker Arms
Post by Serowbot on 10/02/19 at 13:14:02

I figure I can take Rollie Free by goin' commando... :-?