home made flamer circuit as requested
26 March 2003, 09:47 AM
#1
PLEASE NOTE: THIS CIRCUIT IS DESIGNED TO BE USED WITH AN ELECTRONIC SPARK BOOSTER. THIS CIRCUIT WILL NOT WORK ON ITS OWN.
I think I put the corect values in. The 5K variable allows you to ajdust the frequency of the spark. Cannot rememeber what I set it the to resistance wise but I know I put it at 20Hz. Will measure it if anyone needs it.
Please not that I also used a spark booster circuit so the current by going directly to the coil through the reed relay may blow it, probably not but check the manufacturers spec to see.
The reed relay is needed because the coil does not like transistor ground.
Any questions post, here rather than mailing me please.
[Edited by Nezz10 - 5/22/2003 4:43:46 PM]
[Edited by Nezz10 - 5/22/2003 4:55:15 PM]
I think I put the corect values in. The 5K variable allows you to ajdust the frequency of the spark. Cannot rememeber what I set it the to resistance wise but I know I put it at 20Hz. Will measure it if anyone needs it.
Please not that I also used a spark booster circuit so the current by going directly to the coil through the reed relay may blow it, probably not but check the manufacturers spec to see.
The reed relay is needed because the coil does not like transistor ground.
Any questions post, here rather than mailing me please.
[Edited by Nezz10 - 5/22/2003 4:43:46 PM]
[Edited by Nezz10 - 5/22/2003 4:55:15 PM]
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28 March 2003, 10:38 AM
#10
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Well i've got all of my parts now, so i guess i'll just have to attempt to put it all together....
Cheers for this nezz. Have you got any pictures of the actual circuit alltogether ??
Cheers for this nezz. Have you got any pictures of the actual circuit alltogether ??
28 March 2003, 11:06 AM
#11
I have built my circuit on strip board but the piece was a bit small so may redo it on a larger bit. I do have pics but not with me, may post them up tomorrow if I remember.
As for installation, I have not got around to that yet but will have to soon - the project is meant to be finished soon.
I considered getting two bits of aluminium to go under and on top of the exhuast so the sparkplug would sit flat but this was going to be too much hassle so I will just get a 10mm nut tapped out to fit a plug then tack this onto the top of the tailpipe.
I will post pics of the installation as and when I do it.
As for installation, I have not got around to that yet but will have to soon - the project is meant to be finished soon.
I considered getting two bits of aluminium to go under and on top of the exhuast so the sparkplug would sit flat but this was going to be too much hassle so I will just get a 10mm nut tapped out to fit a plug then tack this onto the top of the tailpipe.
I will post pics of the installation as and when I do it.
31 March 2003, 05:59 AM
#13
My plug is a 14mm dia thread so I was going to use a M12 nut and get it tapped out to hold the plug, then weld the nut on to the exhaust so I could remove the plug if/when I needed to.
31 March 2003, 08:57 AM
#14
I measured the values of the resistors again and found that R2 is a 630 ohm even though it says it is a 1k and VR1 is set to 500 ohms so these values could be put in instead so make the circuit more simple.
OK, pics then....
The circuit from above. The red and black on the left are in 12V input connections and the blue and black on the right are the outputs from the reed relay. Obviously the two blacks would be connected together but come on this is just a prototype
A closer view of the circuit. Yes I know there is a few dodgy links but this was the biggest bit of strip board I could find at the time.
The donor plug(s) with the M12 nuts ready to be tapped as soon as I find out what tapper I need and buy one.
The scope trace showing the 20hz output freq from the reed relay when connected through the input supply.
Enjoy!
Next episode - tapping the nuts, building the MKII circuit with set value resistors and no dodgy links, mounting the equipment in the car and more
OK, pics then....
The circuit from above. The red and black on the left are in 12V input connections and the blue and black on the right are the outputs from the reed relay. Obviously the two blacks would be connected together but come on this is just a prototype
A closer view of the circuit. Yes I know there is a few dodgy links but this was the biggest bit of strip board I could find at the time.
The donor plug(s) with the M12 nuts ready to be tapped as soon as I find out what tapper I need and buy one.
The scope trace showing the 20hz output freq from the reed relay when connected through the input supply.
Enjoy!
Next episode - tapping the nuts, building the MKII circuit with set value resistors and no dodgy links, mounting the equipment in the car and more
15 April 2003, 05:15 PM
#18
The MKII board has been built!
The strip board design. Note that I have not included that connector on it or the links to the connector cause I came across it after I had designed the circuit.
I have wrote in the values fo the set resistors that I used instead of the variable and the one I got wrong the first time.
In this pic you can see that i have labelled up the connection for ease of use later.
The circuit hooked up drawing 15mA as it should.
The scope trace with the new values in place.
Next I will mix up some potting to cover the whole board to keep anything from damaging it. I also have to buy a 12mm dia thread spark plug and some M12 nuts with a 1.25mm thread for the spark plug to screw into when the nut has been tacked onto the tail pipe.
The strip board design. Note that I have not included that connector on it or the links to the connector cause I came across it after I had designed the circuit.
I have wrote in the values fo the set resistors that I used instead of the variable and the one I got wrong the first time.
In this pic you can see that i have labelled up the connection for ease of use later.
The circuit hooked up drawing 15mA as it should.
The scope trace with the new values in place.
Next I will mix up some potting to cover the whole board to keep anything from damaging it. I also have to buy a 12mm dia thread spark plug and some M12 nuts with a 1.25mm thread for the spark plug to screw into when the nut has been tacked onto the tail pipe.
21 May 2003, 03:37 PM
#20
The first strip board design was wrong. The link in pink need to be taken out and the one in blue needs to be but in. See below:
I put some small rubber o-rings on the bottom to lift the circuit off the bottom of the tray I will be putting it in to pot it (cover it in silicone).
I needed to cover up the connector to stop any of the potting dripping in so I put in a couple bits of cardboard and a small bit of silicone sealant to fill the gaps.
The circuit in its silicone bath
Out of its bath....
In the end I decided to buy a different spark plug that would fit a nut that I also bought. The nut was an M10 with a 1.0mm pitch thread, this was perfectly suited for the sparkplug that I bought that I cannot remember the code for. It was a C something I think, will check later to confirm this. It was from a motorbike shop and cost a couple of quid. I still have 9 of the nuts left cause I could only buy 10 minimum for 50p each!! So if you need one, let me know.
OK so now I had the working circuit (with slight wiring modifications to correct the 1st strip board design) and a spark in the sparkplug
Next thing to do was drill out a small hole in the tailpipe for it to fit into. This was achieved by taking off the rear bumper for ease of access cause I wanted the hole as clode to the top as possible to hide the plug. Once the bumper had been removed we managed to get the drill fairly close to the top so went for it.
Luckily there was a gromit just above the tailpipe so the HT lead was pushed though a small hole that was made in it. The hole in the tailpipe needed filing away a little to make the plug fit but soon it was sitting pretty. The nut was screwed on to the plug and lined up above the new hole, a couple of welding tacks later and it was fixed in position.
More to follow soon........
[Edited by Nezz10 - 5/22/2003 11:03:10 AM]
[Edited by Nezz10 - 5/22/2003 11:10:58 AM]
[Edited by Nezz10 - 5/22/2003 11:21:16 AM]
I put some small rubber o-rings on the bottom to lift the circuit off the bottom of the tray I will be putting it in to pot it (cover it in silicone).
I needed to cover up the connector to stop any of the potting dripping in so I put in a couple bits of cardboard and a small bit of silicone sealant to fill the gaps.
The circuit in its silicone bath
Out of its bath....
In the end I decided to buy a different spark plug that would fit a nut that I also bought. The nut was an M10 with a 1.0mm pitch thread, this was perfectly suited for the sparkplug that I bought that I cannot remember the code for. It was a C something I think, will check later to confirm this. It was from a motorbike shop and cost a couple of quid. I still have 9 of the nuts left cause I could only buy 10 minimum for 50p each!! So if you need one, let me know.
OK so now I had the working circuit (with slight wiring modifications to correct the 1st strip board design) and a spark in the sparkplug
Next thing to do was drill out a small hole in the tailpipe for it to fit into. This was achieved by taking off the rear bumper for ease of access cause I wanted the hole as clode to the top as possible to hide the plug. Once the bumper had been removed we managed to get the drill fairly close to the top so went for it.
Luckily there was a gromit just above the tailpipe so the HT lead was pushed though a small hole that was made in it. The hole in the tailpipe needed filing away a little to make the plug fit but soon it was sitting pretty. The nut was screwed on to the plug and lined up above the new hole, a couple of welding tacks later and it was fixed in position.
More to follow soon........
[Edited by Nezz10 - 5/22/2003 11:03:10 AM]
[Edited by Nezz10 - 5/22/2003 11:10:58 AM]
[Edited by Nezz10 - 5/22/2003 11:21:16 AM]
22 May 2003, 02:28 PM
#24
Will post pics of the installation, the plug with spark and fitment, electronic boosted and normal spark, illuminated switch and of course the flames.
Will probably wait till better weather thoght, all it seems to do lately is rain.
Will probably wait till better weather thoght, all it seems to do lately is rain.
27 May 2003, 02:22 PM
#26
27 May 2003, 03:01 PM
#30
Ok pics then....
Firstly the sparkrite thingy I am using....
Wires:
Purple - negative of coil
Red and blue - positive of coil
Green - Ground
White - Trigger (going to the DIY circuit)
Pics of the install....
Pics of the spark, with and without flash....
[Edited by Nezz10 - 5/27/2003 3:03:39 PM]
Firstly the sparkrite thingy I am using....
Wires:
Purple - negative of coil
Red and blue - positive of coil
Green - Ground
White - Trigger (going to the DIY circuit)
Pics of the install....
Pics of the spark, with and without flash....
[Edited by Nezz10 - 5/27/2003 3:03:39 PM]