Introducing... The Adams Axial

[unimmortal]

After trying to get it to run at 100 ohms with everything in series and failing miserably, I wired all of the coils in parallel and connected the coil sets in series to get that down to 3.2 ohms.

What happened with the 100 ohms? What was the failure?

I never had much luck with think wire / High Ohm coils myself.  I understand the magnetic field is stronger with more turns, but my motors always seem to work better with low ohm coils.

You have built quite the contraption there!

The main problem I initially had was pulsing from the outside in - way to sluggish to begin with, then with ~880 metres of wire introduces way too much latency when I need a sharp pulse. I may have to revisit the high ohm wiring though - something Adams strongly recommended. Each coil is around 9-10 ohms so I've got plenty of options. I've always favoured 1mm wire for a bigger field with less resistance myself - and above all faster. Having said that the 0.5mm wire is running just as responsively now that it is in parallel.

In other news... I've been able to successfully switch one circuit in both directions (alternating) from the same source! Using 12V globes as the load and simultaneously connecting (+) and (-) to both sides from two different switches connected to a 12V battery. This is huge - as just like riding a bike, each side has a downstroke and upstroke - the rotor will be handled from both sides (N and S) and in both directions (push and pull) as the power is pulsed AND reversed across both coil sets, effectively removing all magnetic reluctance. 

You have built quite the contraption there!

Thanks, it needed to be strong and adjustable to use as a test bench, and I've thought about replicating it - hence the long threads. Funny enough, the Axial itself is barely 10" x 6" - so pretty small for what I am about to do to it  Guests cannot see images in the messages. Please register at the forum by clicking here to see images.