Author Topic: 3d printed frame caps  (Read 1289 times)

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Offline jvandyke

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3d printed frame caps
« on: May 20, 2015, 10:50:09 AM »
Needed something to cover the ends of my frame.  Thought someone else might be able to use or modify.

I made this to cover the open end of the frame on my '72 CB500K.  Fit is a tad loose on purpose.  RTV it on, or use some magnets or whatever.  The "front" is intentionally oversized to cover the edges and then some, the raised portion fits inside the cut frame.  I printed in transparent ABS to use as lenses.  Might put some red LEDs in the frame tube tied to the brake light to act as extra brake lights, could also make blinkers out of them, or running light or whatever.

I put a piece of paper over the cut frame and did a crayon rubbing.  Took measurements with a caliper.  Created in Google Sketchup Make, 2015, exported to stl, moved over to my DaVinci printer (jailbroken) and printed away.
http://www.thingiverse.com/thing:838860
« Last Edit: May 20, 2015, 10:53:59 AM by jvandyke »
1972 CB500, 7500 miles, in family since '73

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Re: 3d printed frame caps
« Reply #1 on: May 20, 2015, 10:57:47 AM »
Interesting solution.  Can you upload a picture of your cut frame?  Did you simply cut the ends of the frame, after the shock mounts and before the mounts for the fender and signal posts?
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline jvandyke

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Re: 3d printed frame caps
« Reply #2 on: May 20, 2015, 11:20:41 AM »
yep, so the section there is oblong due to the shock mount, it's a weird shape, no idea if it's similar on a 750 or whatever.  I don't think I have a good picture but I'll look.  I know there's easier ways to deal with it but this was fun.  Putting stealth lights in there is kinda cool.  I'm doing a cute little brake light and while the look is cute, the reduced visibility isn't so cool.  I have added running lights to my blinkers to this end as well.  In the end I will have more visibility at night than a stock bike, even if the surface area of the tail light is less, the addition of these, plus the front and rear blinkers now also being running lights should help.  I made them out of LEDs being concerned for voltage draw and recharge issues.  Those LEDs should not draw much, the blinker filaments are still old school incandesce


« Last Edit: May 20, 2015, 11:31:52 AM by jvandyke »
1972 CB500, 7500 miles, in family since '73

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Re: 3d printed frame caps
« Reply #3 on: May 20, 2015, 01:29:08 PM »
Thanks for posting the picture.  I like the idea of the caps and the lights inside the caps.  I do see a potential issue.  It appears that you cut out the cross-member where the rear fender attaches (above the frame rails) so that you could end up with a lower profile seat pan.  I cannot tell whether you replaced it with a new lateral support flush to the frame rails.  If so, no problem.  IF you did not replace the cross-member, your frame will suffer from flex and twist at the rear end.
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Offline jvandyke

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Re: 3d printed frame caps
« Reply #4 on: May 20, 2015, 05:48:38 PM »
yep, been discussed a little already, I'm no expert but theres SO much steel in that area in a triangle of tubes I just can't imagine flex is going to be an issue for a light cruiser bar hopper.
1972 CB500, 7500 miles, in family since '73

Offline jvandyke

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Re: 3d printed frame caps
« Reply #5 on: May 21, 2015, 08:58:45 PM »


lit

1972 CB500, 7500 miles, in family since '73

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Re: 3d printed frame caps
« Reply #6 on: May 21, 2015, 10:08:28 PM »
Nice look with the clear inserts.
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold