1940 SS Knucklehead: People's Champ 5 Build" - Page 4 - The Jockey Journal Board

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Old 12-08-2016, 10:48 AM   #61
dhallilama
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Default Re: 1940 SS Knuckle

continue to be absolutely blown away...

not only is the fabrication amazing, your eye is great.
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Old 12-08-2016, 09:05 PM   #62
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...do not get it the way you sanded the headlight but looks incredible. Tools, ideas and talent.
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Old 12-09-2016, 02:36 AM   #63
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Default Re: 1940 SS Knuckle

Madness.
You don't base jump by any chance do you?
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Old 12-09-2016, 04:38 AM   #64
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Default Re: 1940 SS Knuckle

I feel like this is 2016/2017's version of the "Japanese custom built from scratch" thread, where the whole goddamn board keeps refreshing their Jockey Journal tab just to see if Newman did anything recently.
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Old 12-09-2016, 08:36 AM   #65
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Quote:
Originally Posted by selectedgrub View Post
Madness.
You don't base jump by any chance do you?
I do. Or did. I'm at least partially "retired". Made about 800 jumps over 5 years, had a very close friend, who was a better jumper than I, die on a jump that we'd all consider "safe". Not that I didn't know it was a real possibility, it just bummed me out. Also, when you're actively jumping, you need to be on your shit and thinking about it 24/7. Obviously I've got other things going on.

Here's a base video I made a few years ago. This is edited, many of the jumps were illegal, so those ones are just a blank screen.



Quote:
Originally Posted by govmule84 View Post
I feel like this sis 2016/2017's version of the "Japanese custom built from scratch" thread, where the whole goddamn board keeps refreshing their Jockey Journal tab just to see if Newman did anything recently.
Thanks. I post a lot more on instagram, because sometimes I don't have the energy to write up a whole post.

Here's a quick video of a kicker arm I finished yesterday...

https://www.instagram.com/p/BNyHhSKl...en-by=ctnewman

And some modified kicker gears...

https://www.instagram.com/p/BNfu7kvl...en-by=ctnewman

And how I modified them:

https://www.instagram.com/p/BNfkeJ9l...en-by=ctnewman

And then there is a mystery transmission part... all these things are related..

https://www.instagram.com/p/BM7t8sBl...en-by=ctnewman
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Old 12-09-2016, 09:25 AM   #66
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Default Re: 1940 SS Knuckle

Super intrigued. Obviously there is something going on with a cable; I see the stop on the arm and the ditch for it to lay in on the wheel, but I have no idea what the fuck it's for.
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Old 12-09-2016, 10:20 AM   #67
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Default Re: 1940 SS Knuckle

This stuff is just insane man. It's pushing me to step out of my comfort zone on my build for sure. Thanks for the inspiration. Sorry for the sappy shit but your work is otherworldly. Keep it up brother.


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Old 12-09-2016, 01:12 PM   #68
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Default Re: 1940 SS Knuckle

I mean, I guess it's ok
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Old 12-09-2016, 10:40 PM   #69
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Default Re: 1940 SS Knuckle

Truly an amazing vision for a bike!
Keep 'me coming...like everyone, I'm enjoying the hell outta watching your build.

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Old 12-11-2016, 09:09 AM   #70
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Sorry again for more instagram videos, but check these out. The culmination of two months of work. Basically, i reimagined the kicker side of the transmission and made it open, sorta like an old indian. Since the bike is a very "skinny" build, the widest thing by far was the tranmission, so I sought to move the kicker inboard. My end design moved the right most edge of the transmission in about 2.5 inches, which is pretty significant. In order to do this I had to get rid of the torsion spring, so I replaced it with a cable and linear spring. The net result force is nearly identical to measured values of a stock kicker spring. The rest of the transmission parts to seal it are already fabricated, and I've mocked them up on a dummy transmission.

Couple hundred hours of work here between design and fab time. Hope you enjoy.



https://www.instagram.com/p/BN3RU-Fl...en-by=ctnewman

https://www.instagram.com/p/BN3UTltl...en-by=ctnewman
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Old 12-11-2016, 10:37 AM   #71
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Default Re: 1940 SS Knuckle

Crap Newman, I feel small now!
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Old 12-11-2016, 11:15 AM   #72
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Default Re: 1940 SS Knuckle

Are the support bits and throwout arm both investment cast too?
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Old 12-11-2016, 09:09 PM   #73
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Default Re: 1940 SS Knuckle

Ho-lee fuck.

I guess we know who's going to be an invited builder for '18...
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Old 12-12-2016, 02:21 PM   #74
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Insane dude Thumps up
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Old 12-13-2016, 07:46 AM   #75
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Default Re: 1940 SS Knuckle

Here are some actual pictures of the trans parts:

This little guy locks the CShaft from spinning.



The CShaft passes through the trans and also supports the kicker.



Here are some shots with the throwout bearing installed. It has bearings on both the inside of the "cup" and on the outside where the fork contacts it.



This is the throwout cup. Thrust ball bearing inside, radial bearing outside on the fork. Believe it or not this part was made 100% on the bridgeport with zero CNC.



Here are a few more shots.







You can sort of see some of the sealing parts in there, I had to add 3 orings, two plugs, and 2 lip seals, and will also have to seal some of the bolts.

Unlike a standard 4 speed, the kicker clutch gear always spins and is engaged with the kicker clutch hub. The only time it "ratchets" is when the kicker is moving backwards. The kick gear is a sector gear that is "out of the way" while the bike is running. Having smooth re-meshing with the stock style gear was poor, so I was forced to modify the gears a bit:



The left is a baker gear the right is a vtwin.

Here's how I modified them it took FOREVER.

https://www.instagram.com/p/BNfkeJ9l...en-by=ctnewman


Lastly, here's a video of me wiggling some stuff around.

https://www.instagram.com/p/BN8cxS-l...en-by=ctnewman
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Old 12-13-2016, 07:56 AM   #76
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Default Re: 1940 SS Knuckle

Amazing work! How do you pattern the pieces that are cast?
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Old 12-13-2016, 07:58 AM   #77
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Amazing work! How do you pattern the pieces that are cast?
They're 3D printed in wax and then investment cast. These pieces were about 600 dollars.
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Old 12-13-2016, 09:55 AM   #78
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Here's a picture that very well illustrates why I'm going through all this hard work. WIDTH.

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Old 12-13-2016, 11:20 AM   #79
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How many pounds of preload are on those springs for the kicker return? Main reason I'm asking is I'm wondering how far up your ass that pulley cap is going to go if that cable be decides to let go? Lol!!! Really well thought out and nice work btw
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Old 12-13-2016, 11:20 AM   #80
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Amazing work man, your attention to detail and the obscene baffles me. That's seriously skinny. Like Rezi I've modified kickers to be angled inward and less obtrusive but your level of detail is unreal.

Cannot wait to see this beast together. I hope it's going to run on injection and not a carb.. that would be a let down!!! haha.
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