Instructables
Picture of Simple foldable kayak trolley in 20 minutes
A simple kayak trolley, made in PVC tubing. Easily to disassembly for transportation.
It is lightweight and fits perfectly an Ocean Kayak Malibu II sit-on-top kayak. If you have a different kayak, only need to adjust the distance between holes in the frame to make it fit.

Enjoy it ;-)
 
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Step 1: Materials

Two wheels (recycled from an old lawn mower)
PVC pipes: 75 and 37 mm of diameter, about 1 meter of each one
2 screws with nut (M8x110mm) used as wheel axle
2 screws with nut (M6x80mm) to join the PVC pipes in a frame

Total cost of project: near 0 (just some cents to buy the screws)

Step 4: Assembly

The holes in 75mm pipe are 38mm diameter. The centre of each hole is 44mm from each side. The distance between holes is 410mm that is the distance between scupper holes in the cockpit of the kayak. Also will need 6mm holes located perpendicularly to 38mm holes (and also 44mm from side).


At 25mm from the side of 37mm pipe, make a hole of 8mm. Use M8 x 110mm screws to attach the wheels to the pipes.

M6 x 80mm screws are located as shown in the figure to join the three pipes. The distance of the hole is 200mm from wheel side, and it has to be made perpendicularly to 8mm hole. It gives 220mm of tube that you have to pass through scupper holes in the kayak.

If you have a different model of kayak, probably you will have to change the distance between 38mm holes, to make them fit scupper holes of your kayak.

Step 5: The result

Picture of The result
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Here is what you get, a simple trolley to move easily your kayak.

Step 6: Folding the kart

Picture of Folding the kart
To fold the trolley, just remove M6x80mm screws, and insert 37mm PVC pipes inside 75mm pipe (as shown in figure).

This looks great. I love how if folds down so compactly. My question is: is this difficult to position under the kayak ? I love the easy of this design, but I worry that it will be difficult to get the posts into the scupper holes. If anyone has made this and can comment, I'd appreciate it.

chusgs (author)  michelle.caporali.92 days ago
It is VERY easy to position under kayak, even if you are alone.
You can also put the kayak over a side (rotate 90º), position the trolley and stand it up again.
fascist1 year ago
I have had a few problems with making this trolley. First, the scupper holes in my kayak would only accept a 20mm pipe, so I risked the $4 on a couple of pieces, but it isn't strong enough to support the weight without bending. I will be checking an aluminium pipe supplier and see if I can find a stronger substitute.
chusgs (author)  fascist1 year ago
With only 20mm maybe you have to use aluminium or reinforce the PVC pipes internally with a stainless steel bar or similar... My pipes are 37mm and they bend slightly so 20mm definitively is not enough for this project.
fascist chusgs1 year ago
Yes, I discovered that. I picked up some aluminium pipe today, but haven't had time to drill the holes in it. I was surprisingly cheap (AUD$8.85 for 1m). The OD is around 32mm, slightly wider than the approx 30mm OD of so called 20mm PVC.
Good news everyone! I tested the aluminium tubing at the dam last weekend and they were perfect, so for only a slight weight increase, and a few more dollars I have a working trolley. I used plastic wheels from a second hand golf buggy/trolley. Total cost around AUD$28 including the PVC that was replaced.
donnycanoe3 years ago
This is great! I will make something similar for my kayak.
rawly old3 years ago
i love this idea. I figure if I put caps on the 37mm bits and drill my
axle holes thru them, it will reinforce them enuf for me to use small
spoked wheels and create a bicycle trailer for my boat. thanks a
bunch.
chusgs (author)  rawly old3 years ago
Sure... my first idea was with spoked wheels (as they will not stuck in soft sand) but unfortunately I couldn't get them.
Thanks for your comment
chusgs,
i hear you about the problem with smaller wheels stuck in the sand.
i've been there. So... for all those out there in need of wheels, may
i suggest this; Kids out grow their 1st bikes in no time at all. Having
built several bike trailers for various functions, i've found one can
often pick 12" & 16" wheeled bikes at garage sales or thrifts for less
than the cost of a new 16" tire. If you can find an old trailabike. the
kind that hitches to the seat post, they convert easily into a single
wheel bike trailer for off road touring. Check your local craigslist;
there's almost always such items out there for cheap.
zamirii3 years ago
can also use a bit of 2x4 for the crosspiece
SFX Master3 years ago
Great idea using the drainage holes to mount the trolley!
pakngah4 years ago
Genius is the only word I can think of! Thanks.
SSeegars4 years ago
That's what I needed. Inspiration. Nice design.
oznovice4 years ago
Thanks for the ideas, I made a few modifications for a Venturer kayak. Replaced drilled holes with T-pieces,fitted onto old pram wheels with a removable axle so it all comes apart and it works.  When I work out how to I'll post images. Thanx again
maccina5 years ago
oh yea another piece of advice is to use washers to keep the wheel from rubbing the pvc while it turns. I had my bolts tighten as the rig rolled. I may use double nut trick to prevent further hastle. It may be a good idea to include inches as well as mm since many of us are metric-challanged...lol
chusgs (author)  maccina5 years ago
Of course washers are useful for that (I have them already installed). I've not included inches because this is only an idea of how to do it, and I don't know if direct unit conversion is useful. For example 6mm (drill bit) are 0.236 inches and I'm not sure if there is a drill bit with those dimensions. As kayaks will vary between different brands, if you want to build one, you will have to fit it to your kayak size.
maccina5 years ago
great idea!!! While I was constreucting I had a variation that may work for some who don't have the 3" pvc. You could drill 2 1" holes in the supports(that fit into scupper holes) and insert a 1" pvc pipe through the 4 holes .this forms an H and I covered the 1" with the foam insulation. It also keeps the rig from twisting without the extra hardware. thanks again
bauble5 years ago
That's a great design. Very clever. Just love how small it folds up to. I'll have to see if I can adapt this for my fiberglass kayak.
IdahoDavid5 years ago
A simple and elegant solution. I think I have all the parts I need in my garage and shed. Great idea.
dchall85 years ago
I have two different kayaks and this will work great! Thanks!