Topic: Billet Crankshafts

[kmb69]

Impressive Kieth.  May I inquire about valve sizes and intended bore?

George

You're getting personal now George! 

Valve angle.....its got some. Valve size...larger than stock.

Mike knows! 

[gschuld]

🤣🤣🤣🤣. I’ll enjoy the anticipation

George

[Ellz10]

Paladin333 on hondachopper runs a turbo and NOS on his amen savior. He always says twist your throttle until you smell 5hit, or see God


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Back in the end days of Funnybike I know guys were running nitrous with the turbo. The nitrous would get you off the line hard and then the turbo would kick in. I can't even imagine what cylinder pressure was at that nitrous/50lb boost overlap period.

Oh what I would've paid to be there and see that! 

[Tracksnblades1]

I am now MORE honored to have had dinner with you

Do I see roller rockers?

Thank you, it was my honor and pleasure.

Yep, the rockers have rollers on the shafts and rollers that replace the tappet screws.
Valve adjustment is made with varying thicknesses of valve stem lash caps.
The rocker arm geometry is a thing of beauty if I do say so myself.
Less than 1mm sweep across the lash caps at 11mm lift.

Well Done..It’s like my Day Dreams have materialized without an effort..😁
Excellent with the rocker arms.. Looks like your going to turn it..😁

Just curious..?   Is your 1mm roller tip sweep centered ? Or does it favor center at max lift/spring rate ?

Hoping your intake’s are 38s and your cylinderhead’s roof is shallower 😇
Speechless and intently watching… 😁

[kmb69]

.....
Well Done..It’s like my Day Dreams have materialized without an effort..😁
Excellent with the rocker arms.. Looks like your going to turn it..😁

Just curious..?   Is your 1mm roller tip sweep centered ? Or does it favor center at max lift/spring rate ?

Hoping your intake’s are 38s and your cylinderhead’s roof is shallower 😇
Speechless and intently watching… 😁

Very thoughtful questions. It's a big motor - may not turn too high. Mainly wanted to relieve side pressure on 5.5mm valve stems.

Actual roller tip sweep is total .9mm. Off center -.52mm fully closed. Off center +.38mm mid open. Off center +0.24mm fully opened.

Intakes are larger than 38 and the included valve angle is 7.5 degrees narrower than stock allowing a shallower chamber.

[gschuld]

That adds up to a pretty large bore.

Chamber volume shouldn’t too large either.  Looks like about a 15 degree angle from the chamber edge. So you will have matching piston crown for a generous squish area.

Excellent

George

[Tracksnblades1]

.....
Well Done..It’s like my Day Dreams have materialized without an effort..😁
Excellent with the rocker arms.. Looks like your going to turn it..😁

Just curious..?   Is your 1mm roller tip sweep centered ? Or does it favor center at max lift/spring rate ?

Hoping your intake’s are 38s and your cylinderhead’s roof is shallower 😇
Speechless and intently watching… 😁

Very thoughtful questions. It's a big motor - may not turn too high. Mainly wanted to relieve side pressure on 5.5mm valve stems.

Actual roller tip sweep is total .9mm. Off center -.52mm fully closed. Off center +.38mm mid open. Off center +0.24mm fully opened.

Intakes are larger than 38 and the included valve angle is 7.5 degrees narrower than stock allowing a shallower chamber.

Just Plain Awesome 🎯😇

So you know the rocker arm sweep heavy spring argument…
We used to argue what wore the guides out faster on push rod engines …always ended up using
the push rod length that yielded the most max lift, guides be damned..😜 but we’ll monitored..🤔

After watching Don R’s 8,000 rpm “high speed slow mo” sbc valve spring video, the whole valve train may best be accurately expressed by the Chaos theory.. 😜

😁Big intake’s for big lungs 😇 and we all like 38s  and > double Dee’s  ..😁

Just Plain Awesome 😁

👀ing

Afterthought….OEM rocker pivot C/L…?

[kmb69]

.....
Afterthought….OEM rocker pivot C/L…?

Yes. And the rockers are 1:1.

[RAFster122s]

So, any candy been milled out yet?

[kmb69]

So, any candy been milled out yet?

All big Customer orders just got finished and now have some machine time open.
Starting on the geared primary drive components today. 

[Tracksnblades1]

😁😜👀

👀👀👀

[Medyo Bastos]

So, any candy been milled out yet?

All big Customer orders just got finished and now have some machine time open.
Starting on the geared primary drive components today. 

Just can wait🫣


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[dragracer]

I'm definitely waiting patiently to see the final product. Eye candy is always good even if I can't afford to buy a piece. 😀

So, any candy been milled out yet?

All big Customer orders just got finished and now have some machine time open.
Starting on the geared primary drive components today. 

Just can wait🫣


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[Don R]

 Some of us are living vicariously through the projects we can only dream of doing, but other guys have the knowledge and tool access to try.

[dragracer]

Some of us are living vicariously through the projects we can only dream of doing, but other guys have the knowledge and tool access to try.

Yeap, it's always nice to dream.

[RAFster122s]

Some of us are living vicariously through the projects we can only dream of doing, but other guys have the knowledge and tool access to try.

Yeap, it's always nice to dream.

For some of us it is our only possibility…

[Medyo Bastos]

Some of us are living vicariously through the projects we can only dream of doing, but other guys have the knowledge and tool access to try.

Yeap, it's always nice to dream.

Uh huh, I just keep dreaming


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[kmb69]

Finally, IMPORTANT parts on machines.
Pics of the new primary outer ready for gear teeth.

[Tracksnblades1]

Awesome

😜

[Medyo Bastos]

Those look great Keith!


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[dragracer]

Keith, we missed you at Valdosta this weekend.  Hopefully we'll get to see a bike with your masterpiece make passes at a Man Cup event in the near future.

[grcamna2]

Finally, IMPORTANT parts on machines.
Pics of the new primary outer ready for gear teeth.

Gear primary drive ! 

[Sam Green Racing]

It's been a long time since we heard from Keith, has something stalled the project KB ?

Sam.

[Tracksnblades1]

Been wondering that too.

Being self employed can be tough, you can only be as good as your worst employee that day…

Hope everything and everyone is well in his life life and he’s just taking care of business first. 😇

[kmb69]

It's been a long time since we heard from Keith, has something stalled the project KB ?

Sam.

Been wondering that too.

Being self employed can be tough, you can only be as good as your worst employee that day…

Hope everything and everyone is well in his life life and he’s just taking care of business first. 😇

"...has something stalled the project KB ?" Yep! My customers are filling my machine time and spoiling my fun!

"Hope everything and everyone is well..." Everyone is quite well. Yep, BUSINESS FIRST! (dammit)

Had a little bit of a learning curve on the gear hobbing. Scrapped a couple of parts. All good now.

A pic of progress to date. The damper outers and idler gears are finished.

The damper inners need the clutch hub splines and bearing surfaces machined.