LumberJocks

Designing the Dragon Pull Toy

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Project by johnhutchinson posted 07-16-2014 03:41 AM 1166 views 7 times favorited 20 comments Add to Favorites Watch

A number a LumberJocks sent me emails asking how I designed the dragon pull toy.

For my articulated projects, I always sketch in CAD (because I don’t have a pencil) and then animate the design to check the relationship of parts and the clearances.

It’s no fun looking at static pictures, so I made a little video to show how it works. https://vimeo.com/100805928

Grab some popcorn and enjoy!

PS—I noticed in the video that I need to clip his back toenails—they’re draggin’. :)

-- John - Central Ohio - "too much is never enough"





20 comments so far

View majuvla's profile

majuvla

3416 posts in 1520 days


#1 posted 07-16-2014 08:10 AM

Excellent project!Verry nice,simple and understanding video presentation.Definately something to play with.

-- Ivan, Croatia, Wooddicted

View Monte Pittman's profile

Monte Pittman

14131 posts in 990 days


#2 posted 07-16-2014 10:43 AM

Very nice design and build.

-- Mother Nature created it, I just assemble it.

View stefang's profile

stefang

13019 posts in 1986 days


#3 posted 07-16-2014 11:58 AM

Very cool John. Thanks for the video. I look this up as soon as I get a great grandchild.

-- Mike, an American living in Norway.

View GerardoArg1's profile

GerardoArg1

661 posts in 646 days


#4 posted 07-16-2014 01:06 PM

Nice job. Thank for the video

-- Disfruta tu trabajo (enjoy your work) (Bandera, Argentina)

View johnhutchinson's profile

johnhutchinson

624 posts in 281 days


#5 posted 07-16-2014 01:55 PM

Thanks, guys! The wheels and cams are really the stars of the show, so I sent them back out for an encore. :)

-- John - Central Ohio - "too much is never enough"

View Underdog's profile

Underdog

534 posts in 688 days


#6 posted 07-16-2014 02:19 PM

Yeah, but where are the plans? I’ve loved this ever since you posted it….

View HillbillyShooter's profile

HillbillyShooter

4571 posts in 944 days


#7 posted 07-16-2014 03:33 PM

Thanks for posting—very interesting.

-- John C. -- "Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth." George Washington

View Pimzedd's profile

Pimzedd

450 posts in 2456 days


#8 posted 07-16-2014 03:39 PM

Thanks for posting John. Will help a lot if I decide to make one.

-- Bill - Mesquite, TX --- "Everything with a power cord eventually winds up in the trash.” John Sarge , timber framer and blacksmith instructor at Tillers International school

View johnhutchinson's profile

johnhutchinson

624 posts in 281 days


#9 posted 07-16-2014 03:58 PM

Underdog: I’m putting a set of plans together now. Actually, they’ll be revised plans from what I published in 2000. I’m tweaking some things to make it easier and better.

-- John - Central Ohio - "too much is never enough"

View HillbillyShooter's profile

HillbillyShooter

4571 posts in 944 days


#10 posted 07-16-2014 05:45 PM

John, Would you please consider putting me on the list to receive those revised plans when you get them finished? Thanks, John

-- John C. -- "Firearms are second only to the Constitution in importance; they are the peoples' liberty's teeth." George Washington

View Diggerjacks's profile (online now)

Diggerjacks

1754 posts in 1791 days


#11 posted 07-16-2014 06:24 PM

Hello John

As usual a fantastic new toy

I like it

Thanks for sharing

-- Diggerjack-France ---The only limit is the limit of the mind and the mind has no limit

View johnhutchinson's profile

johnhutchinson

624 posts in 281 days


#12 posted 07-16-2014 06:38 PM

HillbillyShooter: You’re on the list. Probably the middle of August.

Diggerjacks: Thanks, but it’s actually not new. I designed it about 15 years ago. I thought it was about time to resurrect the old boy and tune him up. :)

-- John - Central Ohio - "too much is never enough"

View dogsop's profile

dogsop

17 posts in 1066 days


#13 posted 07-16-2014 08:54 PM



I m putting a set of plans together now. Actually, they ll be revised plans from what I published in 2000. I m tweaking some things to make it easier and better.

Darn, I literally just ordered the back issue of the magazine to get the old plans last week. That is $4 I’ll never see again. :-)

Looks great, would love to see the new plans.

View johnhutchinson's profile

johnhutchinson

624 posts in 281 days


#14 posted 07-16-2014 09:44 PM

dogsop: Don’t worry. The old plans will work just fine. I reconstructed my CAD drawing from the published plans and noticed that a couple of the holes were slightly off. That often happens when individual parts are published out of context.

Another change that I’m making is the clearance between the tail and the body spacer. No reason for it to be that close. All I really need to do is hold the point where the tail contacts the spacer.

I’m making the wheels as an assembly of two 1/4” disks rather than a single 1/2” disk. Sounds like a complication, but this will provide a more accurate groove for the O-ring tires after I chamfer the edges.

Also changing the tires from plumbing O-rings to Scunci No-Slip Hair Ties. They’re available at any drug stores, they’re extremely grippy, and they’re UV and ozone resistant. You can see in the photo how my rubber O-rings have degraded after 15 years.

Finally, I’m beefing up the hips to at least 3/4” material, probably oak. They won’t look so wimpy and they’ll provide more downward pressure to the back wheels. The back wheels are doing most of the heavy lifting and they need all the help they can get.

Feeling better now? :)

-- John - Central Ohio - "too much is never enough"

View VTdscglfr's profile

VTdscglfr

18 posts in 527 days


#15 posted 07-17-2014 12:12 AM

hey john, I would love to get my hand on a set of the plans. Will you be charging for them? If so id be happy to pay you for your hard work? I would love to build this for my new son.

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