Tyrtill's Collapsible Foamy

Canvas covered foamies (Thrifty Alternatives...)

Moderator: eaglesdare

Tyrtill's Collapsible Foamy

Postby Tyrtill » Wed Apr 03, 2019 9:49 pm

So my build is beginning.
I've ordered my trailer (Ultra Tow 5x8) https://www.northerntool.com/shop/tools/product_200660344_200660344 which should be showing up this weekend. (Spent the extra dough on the aluminum to save 90 lbs)

The plan is to build a collapsible trailer very similar to the slidavan.

(From the Unusual Designs Thread:)
WizardOfOdds wrote:Image

This one caught my eye for several reasons:
1- It is small (5x8) and light (660#) for (4 cyl) small car towing
2- It has full (6 ft+) interior height
3- It is simple (I think) and straight forward
4- Looks like it could be "foamed" without undue complications
5- They sell plans which I would expect to have decent diagrams (??)

But
1- I found no details about the lift mechanics
2- The rear door is 2 piece and may not open smoothly as one.
3- Not a lot of detailed information.

Here is a video, but it leaves out many critical views, like erection.


More info on Home page at http://woodenwidget.com/Slidavan.htm
Image
Image
Image
Image


I'm waiting for my trailer to get some final measurements (I'll also be using it to get my first batch of foam and ply)

Then I'll probably show my closer to finalized plans.

These forums have me so excited about the build.
(Link to google build gallery https://photos.app.goo.gl/YTbuKTWqm5wRydg68
Last edited by Tyrtill on Sun May 26, 2019 9:37 pm, edited 1 time in total.
Tyrtill
Teardrop Advisor
 
Posts: 82
Images: 14
Joined: Tue Mar 19, 2019 4:36 pm

Re: Tyrtill's Collapsible Foamy

Postby GPW » Thu Apr 04, 2019 5:02 am

That’s pretty Cool, certainly doable in Foam … 8) And with Foam you might be able to use “Armstrong” lifters, saving even more weight , complexity and expense... :thumbsup:
There’s no place like Foam !
User avatar
GPW
Gold Donating Member
 
Posts: 14719
Images: 546
Joined: Thu Feb 09, 2006 7:58 pm
Location: New Orleans

Re: Tyrtill's Collapsible Foamy

Postby John61CT » Thu Apr 04, 2019 7:00 am

link to those lifters

and the plans

please?
John61CT
1000 Club
1000 Club
 
Posts: 1891
Joined: Thu Nov 17, 2016 4:36 pm
Top

Re: Tyrtill's Collapsible Foamy

Postby Tyrtill » Thu Apr 04, 2019 7:20 am

The slidavan lift mechanism is just a ball screw placed in the center of the trailer with some pins that permanently lock it up.
However my build I doubt will be very balanced so I'm thinking the pop up camper method with pulleys and cable.

Found Dancam's cross canada build and it was enlightening.

He used a pneumatic system for the lift which was quite cool.

dancam wrote: I should say to never build a foamie like mine. I havent taken photos of the damage yet. But my bottom half is a long box with no top and a full hight hole in the back wall. Upper half is a box with no bottom and a full hight hole in the back wall... things vibrate a lot going down rough roads if they arent a solid cube and we ended up with a lot of paint cracking at the weakest points from all the flex. My trailer frame had some flex as well.


I'll try to strengthen the structure but I guess we'll see if it was a fluke or its just not a foam compatible design. :worship:


EDIT:

If you want to buy the plans they do sell them Duckworks Slidavan

Here is the ballscrew on the slidavan
Image
They just use a portable drill on the bottom to rotate the screw

Ball screw. You just mount a pipe or piece of wood to the flange and it will move up and down.


I think by armstrong he means the hatch lifters on cars ?maybe?

Dancams pneumatic lift post

Build your own pneumatic with plywood and pvc

Tyrtill
Teardrop Advisor
 
Posts: 82
Images: 14
Joined: Tue Mar 19, 2019 4:36 pm
Top

Re: Tyrtill's Collapsible Foamy

Postby dancam » Thu Apr 04, 2019 1:09 pm

Hey! Maybe this weekend i can pull out my trailer and take some photos, but there may still be too much snow. I like the concept of the camper you posted and like you say yours will be mine was also unbalanced. But guess what? That doesnt work for pnumatic cylinders that are all connected togeather either, lol. I had to help the ones that carry the larger load.
With the damage- picture your camper built and done, latched down as you drive. Now as your driving 100kmh and hitting potholes and large bumps, driving on gravel, taking corners hard and so on where is your trailer flexing? If its flexing at a joint there will be damage. Flex across a solid piece of foam will be fine, its flex at joints that do it. I built a foamie with a wood perimiter on the lower half to support the upper half when it was raised and a wood perimiter on the upper half for holding itself up and for stronger anchor points to latch it down. Also for the doors. My wood joints that flexed while driving is what cracked the paint. My trailer frame was not stiff enough. It was angle iron and fairly flexable on its own, my wood and foam box was supporting the frame which doesnt work, you need a rigid frame for this kind of project.
Anyway, hope that helped some.
dancam
500 Club
 
Posts: 586
Joined: Wed Jun 01, 2016 3:27 am
Location: Edmonton Alberta Canada
Top

Re: Tyrtill's Collapsible Foamy

Postby dancam » Thu Apr 04, 2019 1:22 pm

Blue is latch points, red is the flex, i had a verticle wooden 2x2 there.
Screenshot_20190404-124802_Gallery.jpg
Screenshot_20190404-124802_Gallery.jpg (702.09 KiB) Viewed 2893 times
Screenshot_20190404-125300_Gallery.jpg
Screenshot_20190404-125300_Gallery.jpg (461.78 KiB) Viewed 2893 times
Attachments
Screenshot_20190404-125119_Gallery.jpg
Screenshot_20190404-125119_Gallery.jpg (699.92 KiB) Viewed 2893 times
dancam
500 Club
 
Posts: 586
Joined: Wed Jun 01, 2016 3:27 am
Location: Edmonton Alberta Canada
Top

Re: Tyrtill's Collapsible Foamy

Postby dancam » Thu Apr 04, 2019 1:25 pm

Biggest issue was my flexy frame
Screenshot_20190404-125032_Gallery.jpg
Screenshot_20190404-125032_Gallery.jpg (600.93 KiB) Viewed 2892 times


Lots of flex here...
Screenshot_20190404-124913_Gallery.jpg
Screenshot_20190404-124913_Gallery.jpg (537.41 KiB) Viewed 2892 times
dancam
500 Club
 
Posts: 586
Joined: Wed Jun 01, 2016 3:27 am
Location: Edmonton Alberta Canada
Top

Re: Tyrtill's Collapsible Foamy

Postby Tyrtill » Thu Apr 04, 2019 1:44 pm

Thanks for showing the “failure” points so I can keep them in mind. :thumbsup:

I wonder if you used larger bore pipes on the heavy end if it would have made it better.
Tyrtill
Teardrop Advisor
 
Posts: 82
Images: 14
Joined: Tue Mar 19, 2019 4:36 pm
Top

Re: Tyrtill's Collapsible Foamy

Postby GPW » Fri Apr 05, 2019 6:43 am

JMHO, on Dan’s Box , some well placed inner foam “structure" would have lessened the stress at certain points indicated … But consider his extensive travels on the worst of roads and his build was most certainly "Good enough" …. He made it back … A True Adventure ... 8) Well Done Dan !! :applause: And as a side benefit , now Dan Knows what parts to beef up for the next Adventure … ;)
And then there's Ken W. who’s been literally EVERYWHERE ( even my house) in his Simple , but well thought out Foamie trailer …
Remember our original intent was a “Hard Tent” , not an RV structure with Furniture ... :thinking: Many Foamie trailers here lie somewhere in between … and ALL have been successful … :thumbsup:
Build what you think is right for you … The Beauty of Foamies ...

Armstrong lifters ... Two people , one at each end manually lifting the light Foam top into position … Very simple old school method , cheap , uncomplicated, and a well designed Foam top shouldn't be “that” heavy anyway …
IMHO the bottom Box should be Stiffer , the Foam top , not so critical as it’s supported ( closed ) by the stiff lower box … In essence the top box is the "Foam tent" part …
There’s no place like Foam !
User avatar
GPW
Gold Donating Member
 
Posts: 14719
Images: 546
Joined: Thu Feb 09, 2006 7:58 pm
Location: New Orleans
Top

Re: Tyrtill's Collapsible Foamy

Postby dancam » Fri Apr 05, 2019 2:34 pm

Yup, i wouldnt call mine a total failure either. I did 30k with it last summer and it has some cracked paint... it would do another 30k this summer easy if i wanted to. But without some work its not going to keep the water out and will rot long term timewise.
What i would call failures is my sealing the top box to the frame when down. Going fast on gravel roads would fill the trailer with dust-drove a lot of gravel roads but only did 100kmh once..... the fault there was my flexable frame.
The other thing was we slapped togeather the bug screen just before we left and didnt do it as planned because we ran out of time. Take your time with whatever you plan to do to keep bugs out! It gets annoying.
But we enjoyed ourselves and the trip was awesome!
Also the roads in the Yukon, Alaska and Quebec are incredibly rough. I broke a trailer spring early on in our trip in the Yukon and the only replacements available were way stiffer than i wanted. The trailer really bounced more than it should have 90% of our trip. That was the first day in the Yukon it broke
tmp-cam-1241765808874380129.jpg
tmp-cam-1241765808874380129.jpg (911.88 KiB) Viewed 2811 times
dancam
500 Club
 
Posts: 586
Joined: Wed Jun 01, 2016 3:27 am
Location: Edmonton Alberta Canada
Top

Re: Tyrtill's Collapsible Foamy

Postby Tyrtill » Fri Apr 05, 2019 8:58 pm

Received my trailer today. Girlfriend let me put it together inside on this rainy day!
This trailer is ~190lbs according to my bathroom scale. Maybe tomorrow I'll finish it up but I have hockey all weekend so I might not.



Maybe will have some foam by the end of the week!
Tyrtill
Teardrop Advisor
 
Posts: 82
Images: 14
Joined: Tue Mar 19, 2019 4:36 pm
Top

Re: Tyrtill's Collapsible Foamy

Postby amandacreiglow » Sat Apr 06, 2019 4:09 pm

Hey, I’ve been thinking of building a similar foamy on that same trailer! Will be watching closely... :) hope it goes smoothly for you!


Sent from my iPhone using Tapatalk
User avatar
amandacreiglow
Teardrop Master
 
Posts: 137
Images: 1
Joined: Sat Jun 10, 2017 8:29 am
Top

Re: Tyrtill's Collapsible Foamy

Postby ghcoe » Sat Apr 06, 2019 10:04 pm

amandacreiglow wrote:Hey, I’ve been thinking of building a similar foamy on that same trailer! Will be watching closely... :) hope it goes smoothly for you!


Sent from my iPhone using Tapatalk


Welcome back!
George.

Gorrilla Glue, Great Stuff and Gripper. The three G's of foamie construction.

My build viewtopic.php?t=54099
Working with flashing for foamie construction viewtopic.php?f=55&t=60303
Making a hot wire http://tnttt.com/viewtopic.php?f=55&t=55323
User avatar
ghcoe
1000 Club
1000 Club
 
Posts: 1757
Joined: Fri Dec 11, 2009 11:20 pm
Location: SW Idaho
Top

Re: Tyrtill's Collapsible Foamy

Postby ghcoe » Sat Apr 06, 2019 10:05 pm

Tyrtill wrote:So my build is beginning.
I've ordered my trailer (Ultra Tow 5x8) https://www.northerntool.com/shop/tools/product_200660344_200660344 which should be showing up this weekend. (Spent the extra dough on the aluminum to save 90 lbs)

The plan is to build a collapsible trailer very similar to the slidavan.

(From the Unusual Designs Thread:)
WizardOfOdds wrote:Image

I'm waiting for my trailer to get some final measurements (I'll also be using it to get my first batch of foam and ply)

Then I'll probably show my closer to finalized plans.

These forums have me so excited about the build.


Nice clean looking trailer!
George.

Gorrilla Glue, Great Stuff and Gripper. The three G's of foamie construction.

My build viewtopic.php?t=54099
Working with flashing for foamie construction viewtopic.php?f=55&t=60303
Making a hot wire http://tnttt.com/viewtopic.php?f=55&t=55323
User avatar
ghcoe
1000 Club
1000 Club
 
Posts: 1757
Joined: Fri Dec 11, 2009 11:20 pm
Location: SW Idaho
Top

Re: Tyrtill's Collapsible Foamy

Postby Tyrtill » Tue Apr 09, 2019 1:16 pm

My plan is to extend the frame a little on the tongue and off the back (12").
Image

I planned on using "the mix" on the wood and bolting it to the frame. Is the mix going to be enough?

Also I'm working on a glue test. I'll check them this weekend (its pretty cold here)

Last edited by Tyrtill on Sat Apr 20, 2019 7:50 am, edited 1 time in total.
Tyrtill
Teardrop Advisor
 
Posts: 82
Images: 14
Joined: Tue Mar 19, 2019 4:36 pm
Top

Next

Return to Foamies

Who is online

Users browsing this forum: No registered users and 0 guests