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Been there. Learning something new is frustrating some times. I pay my bills being a programmer, let me know if you need any help or have any doubt, i'll be glad to help. Are you doing this as a learning exercise? On the same Arduino route there are shields and software that could allow you to...

Great looking engine! Congratulations!

Hi Brian, After reading your issues with the ignition coils, i've started experimenting with a few i got at home. I had a strong spark once i figured out the wiring. Your coil is a genuine Yamaha part (4h7-61). Those coils attach directly to the bike frame, needing battery ground on the metal...

Hi, I built something similar about a year ago. http://www.thingiverse.com/thing:27794 I was hoping on using Portland cement as substrate with water on the printer head but it did not work as expected. The pieces where very fragile and not suitable for any use. Even removing them from the...

Why not using stepper motors? (AND an arduino or pic micro controller) You won't need any switch, just some math to calculate the steps it need to move. You can even program the speed and direction to control both motor sequences. I can quickly write some code examples if you need. Norberto

Hi Keith, I've 'megasquirted' an old (1980!) Honda Accord a few years ago (and still running!) and found the same spark resistor issue you'r having right now. After months of lecture and head scratching, I end up installing an EDIS 4 ignition controled by the mega ECU. The RFI noise went away...

Thanks, I'll follow your recommendations. I'll build a crucible out of a 5 inch pipe, it should be OK to experiment and maybe cast a few ingots. If it work as expected, i'll go bigger! My wife yelling at me in 3, 2, 1.... Molten alum: priceless :)

Nice :) I'll give it a try. Should i configure the PID with any special setting? The oven already has a chinese PID controller but all the settings are for clay and go up to 1200C in a slow ramp. How much salt per alum Kg do you add? I've spend the last 3 years collecting alum from old...

Hi, I got access to this kind of oven, it reach 1300c! My wife use it to cook clay pots and ash keepers! I always wondered if i could use it to melt aluminum. Should it work and be safe enough for it? Any of you have ever used one for this purpose? Any tip? Norberto

Way to start! Your flywheel seems like a brushless can, i`m right? Small generator engine? Norberto

It`s NOT funny! I`m the man of the house, i always have the last word on any matter... Yes dear.... :P The air conditioner goes to the bedroom...but i can keep the fan we where using there... Norberto

Hmm. so those things really exists then... I`ll start working on one of this soon, i have most of the components on hand. i`ll try to reach 3Kw, most of the machines i saw are of that power make stainless glow red hot in 30 seconds and can melt 200gm of aluminum without any hassle. If melting...

We had one of the colder winters in years in Buenos Aires, the top low was like 10c for this season. On the other hand, we`r having the hottest spring ever, 33c right now... 2 more months to the summer... Time to get an air conditioner for the shop.. or bed room, i`m not sure if it is my...

Hi, After reading a bit about induction heaters i`ve start thinking about using one to heat treat small parts or tools. http://www.rmcybernetics.com/projects/DIY_Devices/diy-induction-heater.htm Any of you did anything like it to heat treat or know how safe it is? I`ve also saw the same used to...

Since yesterday, i`ve replaced my old Pirelli calendar with the picture below :) My wife argued about that calendar for a while...and the replacement is even more gratifying. Cheers!

Wow! nice! Way to go Stan! Congratulations for a nice looking and fine made engine! Norberto

Nice :) I`ll give it another try tonight, after the kids go sleep... I`ll post here my progress and questions. Thanks again!

Hi, Thanks for the tips and links! I was thinking about alibre because i have access to a spare license from work but i think any cad software would be ok for my expectations. I have a couple of my own designs on paper and my goal is to model those in 3D as an exercise. (i figured out most of...

Hi, I`ve spend a couple of hours looking for a post containing some Alibre modeling tutorials. I remember reading the post a while back but now i`m unable to find it! I`m a noob at cad software and i would like to give it another try. Any of you remember reading that post? I will get peace of...

Nice one Ken! I will try it, i have loads of MDF to cut this weekend! Norberto