Bogan's Cylonbros

**bogan** · 11th September 2011, 19:19

Originally Posted by nzspokes

Nice job.

How do you get the inside of your shed tagged?

Well there is a bit of a gap under the door, so my guess is crafty squirrels under the direction of ninja drop bears.

Sneak peek at the headlight and screen bits I'm currently working on.
The headlight is a bi-xenon HID kit (single lamp but high and low beam), and the screen is an LCD unit from a PSP. It'll run two ARM Cortex microcontrollers (smartphone brains) with one sorting the graphics (speedo etc overlaid on image from a rear view camera), and one tending to the IO, I've also got GSM, GPS, SD card, and accelerometer modules to go in there. So will have the functionality of GPS navigating, alarm and GPS tracking via the cellphone network, and data-logging of whatever.

Assembled it all up yesterday to prove the concept, which it did (albeit with a bit of work wit a file and dremel). Now I have to figure out where the little motors are going, and re-machine some parts. Will try and take some weight out of it too, as it's 2kg atm (reckon 1.5 should be doable), with only 0.7kg in the headlight itself.

To explain the mechanical, there is 3 separate systems, the screen, the front and side covers, and the top cover. The screen just flips up and down, and will be flush with the plasticwork when down. The front and side covers rotate the front grill part down, while sliding the sides back and around, connected together with the rose-joint link arms. The top cover just lifts and pulls back.

**avgas** · 11th September 2011, 19:52

sweet work bro.
Loving that headlight mount.

Also love the industrial panel monitor.........where'd you thief that from?

**bogan** · 11th September 2011, 19:59

A mate bought a box of lcd panels and display circuits, said i could have one if i figured out how to wire em up. Machined up a surround for it, and tis a fucking good deal. Doubles as an intruder demotivator, one hit upside the head with it would end most people

**avgas** · 11th September 2011, 20:54

Originally Posted by bogan

A mate bought a box of lcd panels and display circuits, said i could have one if i figured out how to wire em up. Machined up a surround for it, and tis a fucking good deal. Doubles as an intruder demotivator, one hit upside the head with it would end most people

Heh yeah that does sound good fun. I dropped one on my foot recently at work. 10" panel and surround made me cry like a little girl.

These day my only highlight at work is playing with the goodies from Redlion. I really need to change jobs.

**scumdog** · 11th September 2011, 21:02

Pardon my ignorance (It's not a Harley eh!) but why the chain roller? - could you not just take a link out of the chain??

**bogan** · 11th September 2011, 21:12

Originally Posted by scumdog

Pardon my ignorance (It's not a Harley eh!) but why the chain roller? - could you not just take a link out of the chain??

I forgive the ignorant Harley owners, these modern bikes have such nice things as suspension travel, which changes the length the chain should be

. The roller is put so the uncompressed length is smaller, but doesn't affect the compressed length. It gets a workout under engine braking though, so I may need to make up a version 3 roller next time.

**scumdog** · 11th September 2011, 21:26

Originally Posted by bogan

I forgive the ignorant Harley owners, these modern bikes have such nice things as suspension travel, which changes the length the chain should be

. The roller is put so the uncompressed length is smaller, but doesn't affect the compressed length. It gets a workout under engine braking though, so I may need to make up a version 3 roller next time.

Ah, so the swing-arm as such doesn't travers the same arc as tha chain does due to the front sprocket being further forward than the swing-arm pivot point?

**avgas** · 12th September 2011, 09:11

Originally Posted by scumdog

Ah, so the swing-arm as such doesn't travers the same arc as tha chain does due to the front sprocket being further forward than the swing-arm pivot point?

Bingo. length from sprocket to sprocket is different from swing-arm pivot to hub. Likewise pivots points are at different locator's.

**avgas** · 12th September 2011, 09:13

Now I want to build a bike where the chain mounts a sprocket at the swing-arm point........

**bogan** · 12th September 2011, 09:36

Originally Posted by avgas

Now I want to build a bike where the chain mounts a sprocket at the swing-arm point........

Been sketching up some designs like that, added benefit is you spin the crank in the opposite direction of the wheels, so less total rotational inertia makes it more flickable

My electric has the motor mounted to the swingarm, way tighter and more efficient chain, and no need to worry about rollers or sliders etc.

**Crasherfromwayback** · 12th September 2011, 09:57

nice work mate.

**imdying** · 12th September 2011, 14:43

Yeah! Now that is what the fuck I am talking about! (said in best Russian accent).

**bogan** · 12th September 2011, 14:46

Originally Posted by imdying

Yeah! Now that is what the fuck I am talking about! (said in best Russian accent).

Speaking of which, when are you going to put up a build thread?

**imdying** · 12th September 2011, 15:59

No intentions to.

**banditrider** · 12th September 2011, 18:51

Originally Posted by bogan

The headlight is a bi-xenon HID kit (single lamp but high and low beam), and the screen is an LCD unit from a PSP. It'll run two ARM Cortex microcontrollers (smartphone brains) with one sorting the graphics (speedo etc overlaid on image from a rear view camera), and one tending to the IO, I've also got GSM, GPS, SD card, and accelerometer modules to go in there. So will have the functionality of GPS navigating, alarm and GPS tracking via the cellphone network, and data-logging of whatever.

Sounds exciting - what's it all mean?

I'm a geek so I must need a couple of those...

Can't wait to see it when it's all finished (will it ever be?).