Low Cost DIY Collectives

Snap!

I just finished my collective (twist throttle to come later and a bit of tidying up of wires). I wanted something more robust but it has a lot in common with yours.

• Bike post & grip - same sort of price
• Pair of 3:1 steel gears £12 ebay (small gear 6mm bore, large gear 8mm)
• 10k potentiometer £2 ebay
• Piece of scrap steel/ wood would do
• M8 bolt £1
• Tube grip/hinge - £3.55 ebay
• Leo bodnar joystick board - £24 - Leo Bodnar
• Jumper wire £1 amazon 0.1" 3 pin

About £50. Nice and rugged, and as I said I have an add on worked out in my head to make the grip into a twist throttle for about another £10.

awesome work guys !

Inspired, now I feel like I must channel my inner Da Vinci and give it a try.

Quote from ZoSoChile

Inspired, now I feel like I must channel my inner Da Vinci and give it a try.

i just added more links to the exact parts if you fancied trying my version. You'll also need to be able to solder and drill steel to open out the hole in the hinge bracket, but there's no need for anyone to be daunted by the electronics side of it. Its virtually lego.

Inspiring work Thomas and Phil. How do you prevent the arm from dropping? Do you use friction, a counterweight, springs/bungee cord or other means?

As an alternative to using the boat fitting tube grip for the centre of the rotating hinge, a fire door hinge might work. They have a smooth ball bearing motion and the screw hole fittings would make fitting an arm to a base quite simple, a gap separated pair of them would be very resistant to lateral wobble not that it would be very important.

Quote from Overloaded

Inspiring work Thomas and Phil. How do you prevent the arm from dropping? Do you use friction, a counterweight, springs/bungee cord or other means?

As an alternative to using the boat fitting tube grip for the centre of the rotating hinge, a fire door hinge might work. They have a smooth ball bearing motion and the screw hole fittings would make fitting an arm to a base quite simple, a gap separated pair of them would be very resistant to lateral wobble not that it would be very important.

Friction does the job of keeping the arm where you want it. Tighten or loosen the nut to get the resistance you want. No lateral wobble to speak of. It feels very rugged and robust. Yes, this does look interesting but placement of the potentiometer would be trickier.

My apologies for being too lazy to post a pic. The ball bearings are to keep the hinge working if heat distorts a door in a fire.

http://www.flightlink.com/base…seat-and-cover-with-base/