The rack is held in place by passing the saddle post through the rack and securing it with a lock pin. The rack can be removed compleately in less than 10 seconds so if it is a bike you use for regular use this rack will be perfect
I've been using this regularly for a year now. Since i don't have too many build pictures i will add some drawings of the assembly along with the instructions
Considerations For the build
- For the build use the smallest diameter PVC pipe through with seat post will pass.
- Choose pipe that is thick (higher guage)
- Build the rack so that the board sits on the side of the road your ride on.
- PVC pipe ( approximately 8 times the width of your board)
- 90 degree elbow bend ( 7 numbers)
- T junction (4 numbers)
- Suitable Size lock pin or a bolt
- Measuring Tape
- Hack Saw Blade
- PVC Solvent cement or other suitable adhesive
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Step 1: The Mounting Assmbly
This part is designed in such a way that there will be minimal bending / drooping once the board is fixed. After a lot of testing the final design forms the a torsion box. It takes the weight of my 6'7" board easily.
This part of the build can be glued on permanently at this stage.
Contains 4 T's, two glued vertically and two horizontally using Pipes A.
The length of PIPE A is just big enough to to glue the Two T's so that they touch each other.
Both these pieces are connected together using using Pipe B as shown in the figure.
The length of Pipe B is the length between the frame and the tip of the pedal taken parallel to the ground so that the rack clears the pedal while cycling. Give allowance for a little bit of bending / wobbling
To the end of this two 90 degree bends are glued similarly using Pipe A. The bends are aligned approximately 45 degrees to either side of the vertical.
This is the last piece that will be glued on at this stage. Rest of the pieces will be glued after all the parts are fitted properly.
Step 2: Building the Surfboard Cradle
In this step the cradle for holding the surfboard is built. Do not glue them at this stage!!!
Cut 3 lengths of the pipe approximately 1.5 times the width of your surfboard.
Join 2 of this to the 90 degree bends on the mounting torsion box from the earlier step
Make sure that there is sufficient clearance from the ground. if its too close to the ground then make it shorter the difference will only be that the surfboard will sit a bit higher
Fix two 90 degree elbow bends to the end of the this pipe so that they are parallel to the torsion box as shown in the first figure.
Cut two pieces of Pipe whose length is approximately equal to the thickness of the surfboard and connect to the end of 90 degree elbow
Adjust the elbow so that the pipe is parallel to the ground.
Fix two more 90 degree elbow's at the ends of these pipes
Fix the third long pipe we cut and join it to the elbow coming from the top member of the torision box
Now connect another length of pipe to the other elbow. This length should meet the previous piece near the torsion box.
Now adjust bends and trim the pipes so that the last 90 degree elbow will join this two pipes . The rack fitting is now complete and should look like the third figure.
Step 3: Gluing
Now in this step we have to permanently fix the pipes. To glue them correctly I use the following technique
Before dismantling draw lines across each joint as shown in the figure.
Now dismantle the cradle apply the adhesive and put it back together making sure the lines align thereby making sure it all comes together easily.
Step 4: Placing the Lock Pin
In this step we will set up a lock pin to stabilise the whole system
Now place the rack on the bike and add a surfboard .
Now align the rack so that the surfboard is parallel to the bike.
Make a line on the bike seat post and the rack.
Make a hole through the rack passing through the seat post to insert a lock pin or a simple bolt.
Insert pin lock-pin or bolt through the whole and TEST!!!!
you should feel very happy at this stage and your rack is complete :)
to remove the rack just remove the lock pin and slide the seat post out. Its as easy as that !!!!
When not on the bike you can hook the rack to a wall or have a small shaft any place you want to keep the surfboard as shown in the last image
happy building :)