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RE: DIY Ignition System - Most simple
SWEET!:D Thanks mate!!!
I've been using reed switches with my TCI module and they work well, but I've never tried to use a CDI or the like since I can't find documentation regarding the output levels of hall sensors so I could replace them for a reed. One more thing: I've noticed you showed a CDI coil - do they work as good as a standard coil designed for TCI igntions? BTW, the oil used for gasoline burns unlike the oil used for methanol. That's why it runs cleaner (albeit smokier?) |
RE: DIY Ignition System - Most simple
You may not able to imagine where the coil I used come from. This can give you clue. Coil is from this type of vehicle. We call it "Motorcycle" while American call "Scooter", I guess.
http://www.yamaha-motor.co.th/2007/P...mio_2008_1.jpg |
RE: DIY Ignition System - Most simple
ORIGINAL: Patxipt .......... One more thing: I've noticed you showed a CDI coil - do they work as good as a standard coil designed for TCI igntions? |
RE: DIY Ignition System - Most simple
what about the coils that come standard on zenoah engines?
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RE: DIY Ignition System - Most simple
jezmo, i can't find your thread, any help?
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RE: DIY Ignition System - Most simple
ORIGINAL: jeff naul what about the coils that come standard on zenoah engines? |
RE: DIY Ignition System - Most simple
ORIGINAL: jeff naul jezmo, i can't find your thread, any help? http://www.rcuniverse.com/forum/m_6655734/tm.htm |
RE: DIY Ignition System - Most simple
ORIGINAL: jeff naul what about the coils that come standard on zenoah engines? |
RE: DIY Ignition System - Most simple
Of course, I think RC CDI and RC Coil would work, but my experiment is to try something that is different. By using coil from small commercial gas vehicle or house hold equipment open the chance to find easy and cheaper. Coils that my friend are using for this experiment costs only a few bucks per each. If we can find one that match then everybody can make his own ignition system for only about 20 bucks.
Here is the other one red coil that I think it gives the best performance and best match. Although it looks bigger than the last black one but its weight is only 50 gram more. http://www.rcthai.net/forum/attachme...1&d=1202010102 |
RE: DIY Ignition System - Most simple
It is so easy to start.
[link=http://s234.photobucket.com/albums/ee235/copter-new/?action=view¤t=b004.flv]http://i234.photobucket.com/albums/e...ew/th_b004.jpg[/link] |
RE: DIY Ignition System - Most simple
Its performance is great, not less than methanol.
[link=http://s234.photobucket.com/albums/ee235/copter-new/?action=view¤t=a002.flv]http://i234.photobucket.com/albums/e...ew/th_a002.jpg[/link] |
RE: DIY Ignition System - Most simple
This is how test bench is set.
http://www.rcthai.net/forum/attachme...1&d=1202010022 http://www.rcthai.net/forum/attachme...1&d=1202010022 And the DIY electronic ignition http://www.rcthai.net/forum/attachme...1&d=1202010022 |
RE: DIY Ignition System - Most simple
We use a big size fuel filter just before carburetor to ensure smooth and always sufficient fuel run.
http://www.rcthai.net/forum/attachme...1&d=1202010102 Hall sensor http://www.rcthai.net/forum/attachme...1&d=1202010102 |
RE: DIY Ignition System - Most simple
More show .... if correct timing and fuel adjustment this engine and ignition system is very sweet. It can be started very easy.
[link=http://s234.photobucket.com/albums/ee235/copter-new/?action=view¤t=c003.flv]http://i234.photobucket.com/albums/e...ew/th_c003.jpg[/link] |
RE: DIY Ignition System - Most simple
Update... We are desinging this simple ignition system with simple timing advance funtion. We'll experiment to find out how advance timing will effect to the performance and runing of small gas engine. Please stay tune.
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RE: DIY Ignition System - Most simple
Are those lion or li-poly packs your using to power the ignition and how much current are you using.Are you using any voltage regulator to drop the voltage down to 4.8-5 volts.
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RE: DIY Ignition System - Most simple
ORIGINAL: buck1856 Are those lion or li-poly packs your using to power the ignition and how much current are you using.Are you using any voltage regulator to drop the voltage down to 4.8-5 volts. |
RE: DIY Ignition System - Most simple
Actually it is hard to measure current drawed by using digital amp meter because the current always swing up and down during cycle of engine runing. So we can only see runing number on the meter screen all the time which it is hard to read. This is unfortunately because we have only digital amp meter.
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RE: DIY Ignition System - Most simple
Good news.. we had found the way to measure current drawed by using digital multimeter. By put 1 ohm resitor serial in the power supply circuit and measure voltage over that 1 ohm resister, instead of direct meaure ampere. And here the result.
It draws 366 mA at 1500 rpm idle and less than 200 mA at top speed. Top speed draws current less than idle. Strange??? yes..thanks buck1856 to ask this question. http://www.rcthai.net/forum/attachme...1&d=1202101687 |
RE: DIY Ignition System - Most simple
1 Attachment(s)
I passed by the electronics shop today and bought the components for the "Patxipt" version of your ignition.
I'm still confused about the schematic, the 1 Ohm resistor seems to be superfluous (only to measure current?)and the coil secondary ground should be connected to the primary ground. Photos of my module follow as attachments. Will try to test this week on the bench. The connector next to the 7805 voltage regulator has the same pinout as a servo lead, Ground-Vcc-Signal. I also replaced the 7555 for a NE555 IC, since the former wasn't available. |
RE: DIY Ignition System - Most simple
:DDear Bbuldoc,
Is the schematic at the beginning of the thread the final schematic diagram or has it changed. Is the PCB layout available? The small coils you use, from what motorcycle did you obtain them? Thanks for all the effort. From South Africa |
RE: DIY Ignition System - Most simple
ORIGINAL: Patxipt I passed by the electronics shop today and bought the components for the "Patxipt" version of your ignition. I'm still confused about the schematic, the 1 Ohm resistor seems to be superfluous (only to measure current?)and the coil secondary ground should be connected to the primary ground. Photos of my module follow as attachments. Will try to test this week on the bench. The connector next to the 7805 voltage regulator has the same pinout as a servo lead, Ground-Vcc-Signal. I also replaced the 7555 for a NE555 IC, since the former wasn't available. 1 Ohm Resister is current limiter not only to measure the current. I attached a photo how to wire the coil. If you can only find a coil that has common ground for primary and secondary from the factory then you can consider wire the coil as shown in the photo, either way should work. But keep in mind, this wiring won't work if one size of ignition contact go to engine case (ground). You have to isolate engine ground and ignition circuit ground. Good luck and any success or question please let me know. http://www.rcthai.net/forum/attachme...1&d=1202174025 |
RE: DIY Ignition System - Most simple
1 Attachment(s)
ORIGINAL: hendrikm :DDear Bbuldoc, Is the schematic at the beginning of the thread the final schematic diagram or has it changed. Is the PCB layout available? The small coils you use, from what motorcycle did you obtain them? Thanks for all the effort. From South Africa |
RE: DIY Ignition System - Most simple
1 Attachment(s)
Here it is .....
Simple electronic ignition system with two steps auto-timing, low speed and high speed. http://www.rcthai.net/forum/attachme...1&d=1202220966 Its PCB. |
RE: DIY Ignition System - Most simple
Use Reed relay or any small 5V relay should work..
http://www.rcthai.net/forum/attachme...1&d=1202221580 http://www.rcthai.net/forum/attachme...1&d=1202221580 Please note the shape of best working coil.. http://www.rcthai.net/forum/attachme...1&d=1202221580 |
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