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-   -   3d printed Bailey bridge (https://www.rcuniverse.com/forum/rc-tanks-369/11688606-3d-printed-bailey-bridge.html)

MAUS45 06-01-2021 03:33 PM

That is so cool and the detail. Thanks for sharing the video!!!

edoubleaz 06-01-2021 07:58 PM

We have a wonderful river to try it out!

Hemtt TFFT 06-11-2021 04:02 AM

Super Bridge who you are selling the files would like I would also be interested. The bridge would be a good match for my buildings. Würzburg Riese . .

or for here.

Greetings Olaf

Ex_Pat_Tanker 07-09-2021 04:07 AM

Done with the printing, just waiting for the Balsa wood to show up so that I can finish the vehicle deck


Pah co chu puk 07-09-2021 05:00 AM

Originally Posted by Ex_Pat_Tanker (Post 12685308)
Done with the printing, just waiting for the Balsa wood to show up so that I can finish the vehicle deck


That looks great! It will be interesting to see how that plastic does in hot sunshine. Please keep us posted.

Ex_Pat_Tanker 07-09-2021 06:55 AM

just need to glue the deck down:


Pah co chu puk 07-09-2021 07:09 AM

I left my road decking boards floating. Only the ramp boards are glued. I also painted the decking on mine. I have section 7 parts all printed out now, just need to find time to finish and paint them.

Pah co chu puk 07-09-2021 07:28 AM

You are building a correct width bridge, my design is slightly wider than true scale to enable my modern tanks to use it, so you will need to resize the diagonal braces for that width. I found that they do add some measure of stability to the structure. Pythagorean has a great theorem you can use to solve that math.
I also like the ramp end piece you did. Very nice.

Ex_Pat_Tanker 07-23-2021 10:29 AM

Reckon I'm going to call this one done - the act of sticking down the deck boards has cause a little warping and now it doesn't want to snap together as well as it used to, but I'm staring to think that maybe I don't need to clip the inboard trusses in place and can just rely on the outers holding the deck in alignment.

Pah co chu puk 07-23-2021 11:33 AM

Did you glue the wood to the stringers?

I did not glue the wood down at all. Both my stringers and wood boards are floating. I can see where the wood could warp enough to flex the bridge, especially in a humid climate.

We also have bridges being built in Phoenix, Arizona, and Denver, Colorado now, so we will get to see how those teams do. They can post their progress here too.

Ex_Pat_Tanker 07-23-2021 11:41 AM

I used the original gorilla glue (the brown stuff) to hold the wood to the stringers, seems to be holding quite well and more importantly stops the whole deck structure from flexing and breaking the stringers away from the beams.

Pah co chu puk 07-23-2021 01:30 PM

Hmm. When I have the curb hooked to the transom beams it captures the stringers in the notches. I have no glue anywhere in the bridge, but I can turn it upside down and everything stays put.

The flexing you mention, is it a diagonal motion within the plane of the road deck? That kind of flexing would drive the stringers out of the notches.

Do you have the diagonal braces on the bottom of the bridge? They help a lot to dampen flexing in the plane of the road deck.

Pah co chu puk 07-23-2021 02:10 PM

Here are some pix of the bottom. My fingers are pointing to the diagonal braces.
You did a 5 stringer wide bridge, and mine is a 6 stringer wide bridge, so you will need to resize those parts.

Also, the curb should hook under the transom beams like this. My tweezers are pointing to the locking tabs on the curbs being hooked under the transom beams. This should capture the wood pieces.

RichJohnson 07-23-2021 03:35 PM

Greg are you sharing or selling your print files and design?

Pah co chu puk 07-23-2021 03:57 PM

Originally Posted by RichJohnson (Post 12687078)
Greg are you sharing or selling your print files and design?

I'm not sharing or selling anything yet.

I have set up both FRAG and DAK with limited licenses and the stl files needed to print and build bridges for the respective clubs battlefields. I want to do some testing to see how durable these things are, and those folks will put them to the test. I've also been collaborating with EX_PAT_TANKER on various other 3d designs, so he is able to tweak the bridge design online as he pleases. Getting feedback from these folks helping me test the design is great information. When I do sell the files, I want to have most, if not all, of the kinks worked out.

Hemtt TFFT 08-16-2021 07:59 AM


You got me hot with the bridge, that I started a project like that too. At the moment I’m building 4 elements and the ramps. Here are a few pictures, but I’m still a long way off.









Will01Capri 08-18-2021 04:53 AM

Mate, these bridges are truly amazing. I have seen close up aswell and i think they are awesome. I proper credit to you for putting in the work.
Be great to see how you get on with the testing aswell

Pah co chu puk 08-18-2021 05:56 AM

Thanks Will. I'm impressed with your design work too. I hope to own one of your pieces someday. I surf your website and I dream...

Glad you got to check it out in person. I was hoping Martin would show it off to you.

Business is booming for me right now, so models are on a back burner, but I am slowly printing out Martin's 155 mm. It's impressive.

I still have hope of deploying the bridge over a live stream, but I don't know when I'll be able to pull it off. I do have the 7th section ready to paint and add to the bridge.

Pah co chu puk 08-18-2021 06:33 AM

Olaf, that is an impressive job you are doing with your bridge design. It will be cool to see how it comes out.

I used these drawings to reverse engineer my bridge design.

Hemtt TFFT 08-20-2021 11:44 AM

I used these pictures as well. Igot the 1/35 kit from the Bronco company and I took off the bulk of it. My printer is still printing. When all the parts are printed I will continue to report.


Hemtt TFFT 09-14-2021 12:05 PM

So i tested my bridge



20 liter of Coke without Problems


Pah co chu puk 09-14-2021 01:15 PM

Very nice!

JeeSib 09-14-2021 10:16 PM

wow, absolutely impressive :D
looks really cool.
I recalculated how big it should be at 1/10, but that will be very big :D

Panther F 09-15-2021 01:25 AM

Fantastic work guys! I never knew a bridge could be so interesting. Definitely some talented work being displayed!

Pah co chu puk 09-15-2021 03:30 AM

Originally Posted by JeeSib (Post 12694506)
wow, absolutely impressive :D
looks really cool.
I recalculated how big it should be at 1/10, but that will be very big :D

Yes. Picture a scale model the size of a coffee table.

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