H4Inf

Very neat! Now it all makes perfect sense! Thanks Kent. Will get building in about a weeks time - off on holiday for a week now

Cheers,

Paul.

gsl-se addict

iTrader: (3)

Paul: Hope your holiday goes well. Have fun. Let me know if you guys need any help.

I have contacted devitek about doing assembly/kiting. I'll see if he is available to do it. I am stongly considering doing it myself. I will have to see if I can get the things I need shipped over here cheap enough to make it worth it. I would prefer to do it myself. That way if something is wrong/missing, only I am to blame. I think it would be easier this way. Once I get this figured out, I'll list the assembled units.

On a side note: The RX7Club has a folding team. Folding is modeling how proteins behave for medical research. The work is done through Stanford. It is a program that runs in the background and doesn't slow your machine at all. The process is like SETI if any of you are involved with that project. Our goal is to pass the mustang forum. We currently only have about 50 members actively folding right now. Please check it out and see if you can help:

https://www.rx7club.com/showthread.p...5&page=1&pp=15

To make this relavent to the thread. I am looking at offering a small discount on the circuits for those who join. I get no benefit from this, I just want to help medical research and beat the mustang guys.

Thanks guys. I'll keep you posted.

Kent

MattG

iTrader: (2)

Cool. Ill sign up for medical research, and a discount!

Viva La Rotary!

gsl-se addict

iTrader: (3)

Cool. I won't be able to do much of a discount. Maybe 5% or something. But better than nothing, right?

MattG

iTrader: (2)

Hey thats sounds cool to me! Im all about helping science! Its a win win in my opinion!!

Im already half way through my first frame!!!!!

Rx Seven

iTrader: (12)

That's a great idea Kent, that should get more people folding. What system are you running because I was holding my own for a moment and then al of a sudden you started flying up the chart.

Every one interested in the Transistor Trick should be equally excited about folding. Its a fun completion and it functions in the background of your computer. It gets very addicting and next thing you know you will want to start modding your computer so you can get more Work Units done.

All this and you get to help in the fight against Cancer and other diseases!!!!

MattG

iTrader: (2)

Im addicted already!!!!!! Im one of those people that when I find something new, Im all about it HARD CORE! You know what im sayin. Ive already got new idea for making it faster running through my head! I think I might have some tricks up my sleeve

Rx Seven

iTrader: (12)

The 7 cant lose

gsl-se addict

iTrader: (3)

Sweet, guys. Thanks for the help. Folding is pretty cool. I just have a 1.6 Pentium M laptop. My only folder. I leave it running all the time. Averages about 120-150 ppd. We had about 60 people running after the holidays it droped to like 50. You guys should all try it. We all have computers, so we mights as well put them to good use. Since it runs background, it doesn't slow things at all. You can also reduce how much processor it uses or run it as a screensaver if you are worried about slow down. Post in the louge thread when you start folding. The guys can give you tips for increasing speed and stuff.

Help us beat the mustang guys! The 7 can't lose!

gsl-se addict

iTrader: (3)

Here is the listing for the assembled unit:

http://www.rotaryx.com/index.php?a=1002&b=283

Depending how many orders we get, the price may drop a little. You don't have to pay until the end of auction with the way it is setup. If you do pay early and if the price drops later, I will refund the difference (or upgrade shipping or something if you want).

I listed this auction for 2 weeks. I will relist for an additional week if needed. That way, both auctions would end at nearly the same time.

I thought that I would also check for interest in a partial kit. Maybe just the board plus a couple of the hard to find parts. Some people have some of this stuff on hand and may prefer this option. I am not sure what the price would be, but will check if there is interest.

Thanks,

Kent

riceburner1r2001

iTrader: (4)

i see 2 lights on the blackbox 1 looks green and the other ed. can u explain that addict.. ty

gsl-se addict

iTrader: (3)

Yep. There are 2 LEDs on the box. The green one indictaes the signal from the J-109, the red one indicates the output to the 2nd gen ignitor/coil. They blink out of phase (one is off when the other is on). Above idle, they blink so fast that they look to be just on. They aren't really needed, but they will tell you that the circuit is working.

riceburner1r2001

iTrader: (4)

is there a reason as i was looking at it on the site u tell us to go to, y so many wires from the black box

gsl-se addict

iTrader: (3)

Well, the number of wires in the box it what is required:

- 12v
- ground
- input from J-109
- power to J-109
- output to 2nd gen ignitor

I guess it looks like a lot because they need to be long enough to reach eveything. What do you mean by reason? Are you asking about the LEDs?

riceburner1r2001

iTrader: (4)

well that explains it it just needed to no ty

gsl-se addict

iTrader: (3)

Hey guys,

I am looking for ignitor connectors once again for the next batch of circuits. It makes the install much easier and more professional looking. I need a bunch of them. If anyone can hit a wrecking yard and get me some, that would be great. I can give you a TT circuit or a discont on one in exchange depending on how many you can grab. I need probably a minimum of 35 or 40 of them. They are the T connector used to plug in the J-109 ignitor. They are used in other areas of the car as well. They can also be found on 2nd gens. If I can't get them used, I'll order some new ones. The problem with the new ones is they only come in sets (male/female) and we only need one end.

Thanks,

Kent

H4Inf

Woohoo, just picked up 2 coils today. An S4 and S5 coil (cost me AU$125 each from AllMaz), which are both the same model numbers, just different colour connectors for the spark plug leads. Rob said he would pickup the parts for the circuit tomorrow night and we should be in testing by the weekend Also got a couple of T connectors.

We will try to document everything and get some dyno results once we have a chance.

Just wondering here - because we have a better spark, does that mean we can inject a little less fuel? because more will burn ? ie. should I re-dyno tune after doing this mod?

Cheers,

Paul.

gsl-se addict

iTrader: (3)

Cool. Good to hear. Thankfully we can get the coils cheaper in the States. Used they are like 35 USD. Which version are you guys going to try? I can post the layout of the one with max pulse limiting tonight. It is a bit more complicated. The parts are pretty much the same as the autoswitcher that is already posted:

- instead of the OR gate, get a NAND gate (part # 74HC00)
- get one more 0.1 uF capacitor
- one more resistor. This sets the max pulse. 40kOhm=4 ms, 33kOhm=3.3ms, and so on.

As previously mentioned, there have been a couple ignitor failures with the last design. Most of them happened after about 3 months or so. Performance wise, the old and new design should be the same.

You may be able to get away with a bit less fuel or maybe you will just make more power with the current fueling. I don't know if the difference would be enough to make a retune worth it.

Good luck. If you can get dyno results, that would be really cool.

Kent

H4Inf

Hey Kent,

If you could get the latest layout up, with the full parts list that would make things really easy for us to get things rolling! It's hard to sift thru all the posts to work out what I need to get. If you pop all the info up, I can put it onto a website to keep it all organised, so you can refer people to it in future if you like! Email me any info to paul@pw.cx and ill see what I can come up with.

I think the states just have a lot more RX7's generally than over here in Aus, so my 2nd hand coils are gonna seem pretty expensive.. about $95USD (and thats a special price for buying 2 at the same time - but if they don't work, or fail, they will replace them)

I'll be getting a new ECU soon hopefully, so i'll have it all tuned up hopefully with this mod on my car, and after the tuner has seen it in action on robs car

Cheers!

Paul.

gsl-se addict

iTrader: (3)

Heres the updated list:
U1 7805 5V Voltage Regulator
U2 MC14538B Dual Precision Monostable Multivibrator
U3 74HC00 Quad 2-input NAND gate
Q1-Q2 NPN General Purpose Transistor (2n2222A or equivalent)
C1-C3 0.1uF Capacitor (ceramic, metalized polyester film, etc.)
R1 22k Ohm resistor ¼-watt (sets 2.2ms minimum value)
R2 ~40k Ohm resistor ¼-watt (sets 4.0ms maximum value)
R3 22K or 33k Ohm resistor ¼-watt
R4, R5, R7 1k Ohm resistor ¼-watt
R6, R8 330 or 390 Ohm resistor ¼-watt
LED1, LED2 T-1 LED (green, red, amber, etc.) blue, white, and similar will not work because they require a higher forward voltage





For the max pulsewidth, we have the following choices:

using 5% resistors:
2.2ms, 2.4ms, 2.7ms, 3.0ms, 3.3ms, 3.6ms, 3.9ms, 4.3ms , 4.7ms

The 2.2ms was tested in the orignal fixed pulsewidth version of the TT. The low end was a little weak. If I am calculating the pulsewidth based on the numbers that Jeff20B posted before correctly, the J-109 produces about a 6-6.5ms pulse. I think the 3.9ms would probably be a good choice. We could go lower (2.7, 3.0, 3.3, or 3.6) depending on how conservative we want to be. We just want to find the combination that gets us the full spark, but retain reliability. I could include a choice of say three resistors in the kit, and you can decide what value to try.

Xavier8

took me 3 months and over a thousand miles, but I can report an ignitor failure with the auto switching version. Happened while on the highway, got it home on without stopping just on the secondaries, then switched the secondary coil to the primary ignitor and swapped the wires. Doesn't have near the throttle response anymore, but it runs till I get another ignitor. I am also going to change out the box with one with a shorter max pulse width. Good mod still, but I need an ignitor!!!

Dom

It would help if we new what version you were using...

V2.0 or V2.1 ?

Sounds like 2.0 if you've had it for 3 months though.

gsl-se addict

iTrader: (3)

Yes, he has the V2.0. No one has the new one, yet.

gsl-se addict

iTrader: (3)

The circuit boards are now finished from the manufacturer. They will be shipped to me today. I am in the processs of ordering the remaining parts. I am trying to figure what we want to set the max pulsewidth to be. Resistors are cheap, so i will probably give a few values to choose from. I am thinking the 3.9ms may be a good choice. The company is out of the ones to do 3.6ms.

So, the choices are:
2.7, 3.0, 3.3, 3.9, 4.3 and so on

Maybe choose 3.0, 3.3, and 3.9? The Aussie guys are going to maybe to some testing of the new design tomorrow. I think they are using ~4ms as the max pulse, but I am not sure.

H4Inf

Will be testing in a few minutes Just checking all the connections are correct!