When it rains it pours!

[PikledBeats]

Did you JUST find this thread? LOL

I don't even worry about those sayer's of nay. I'm gonna do my own thing and if it works, great! If not, at least it was ALL MINE to fail.

Sand drags are shut down for the winter still trying to work a little magic with an unused field outside of town but it would take LOTTTTTTTTSSSSSSSSS of prep work to get it ready to roll.

Thanks, some people said the dual spark plug was a waste of time but I disagree, even if two spark plugs wasn't NECESSARY it's still pretty bitchin' I:I

I just found it again ... lol, I think I looked when you first opened it and for some reason thought you bought this quad for resale. Anyway it kept me busy for a couple hours the other night reading, and I enjoyed seeing the evolution thus far. And who cares if it's not necessary ... it's sick ....I:I

 

[sicivicdude]

I just found it again ... lol, I think I looked when you first opened it and for some reason thought you bought this quad for resale. Anyway it kept me busy for a couple hours the other night reading, and I enjoyed seeing the evolution thus far. And who cares if it's not necessary ... it's sick ....I:I

Well, originally I did do it for resale or part out. Either way it wasn't supposed to be very long lived....

I sold the engine and just didn't get around to relisting the roller on craigslist or anything so it was sitting out behind my garage just looking all sad. Then I got the wild hair across my backside to do a dragger build MY WAY and decided that frame would be just as good as any to start with....

Glad I entertained you for a few hours.

 

[Rubbersalt]

Damn, 63 pages and i read it all.. THAT IS A LONG READ.

NastyN8s little bro and i have a solution for plugs firing at the same time.

You need to build a circuit splitter than can deal with varying AC voltage for the trigger, something that puts out the same voltage and current on 2 lines simultaneously.

Guitars use a varying AC voltage, not very high 2 volts tops. Splitter replicates that on 2 out puts..

And you, being like me and N8 love to do things on the cheap... So.. you need to build a guitar splitter. They can run off a 9-12 volt DC no problem (battery usually). Stick the splitter on the trigger output.

Go from trigger coil -> splitter -> 2 out puts ->2 CDI - >2 coils

If the CDI isnt high current or voltage, then you can split that signal and use a single CDI,

trigger->CDI->splitter /w 2 outputs-> 2coils
This would only require a single source coil, allowing you to charge the splitter with the lighting coil and stock voltage regulator


Heres a schematic for a guitar splitter running on 9 DC volts (Id run 12)
Use a floating ground with this set up.

AMZ - Guitar Effects & JFET Splitter


I'd also see what kind of current/ voltage the CDI and the source coil puts out. Hook 2nd coil up, fire bike up, get readings off the 2nd coil. From there, i would see what it takes to get double the current off a single source coil, or find a way to split that signal also.

Parts to build electronics can be had from china for pennies (literally) or from America for 5-10 times the price (still cheap as hell).

 

[sicivicdude]

Long read I know, but lotsa thoughts in here.

I'm not sure a guiter splitter would work quick enough, afterall I need about 10K splits per minute or 166 splits per second at peak RPM.

I THINK the trigger coil can send its signal to both CDI's without a problem but each CDI HAS to have a source coil to generate its voltage to fire.

I still have to replace one defective source coil and then test my hypothesis to figure out if this system will work. Obviously, since the drag season is over, I haven't been in a huge rush.... when I get a new source coil in it, I'll update and let you know if this system works or not.

 

[Rubbersalt]

Guitars go upwards of 25k hz... 25,000 cycles per second.... a little faster
This would equate to 1,500,000 RPM lol

Just to be sure, im looking of the component specs for this splitter..
The transistor used operates only around a minimum of .. uff....

100MHz. 100,000,cycles per second, 6,000,000 cycles per minute.
Unless your blaster runs at 6million RPM, it might suffice.

Multiple timings is getting at me though. Only if there was a way to stick a distributor where that water pump was suppose to be.

 

[sicivicdude]

Guitars go upwards of 25k hz... 25,000 cycles per second.... a little faster
This would equate to 1,500,000 RPM lol

Just to be sure, im looking of the component specs for this splitter..
The transistor used operates only around a minimum of .. uff....

100MHz. 100,000,cycles per second, 6,000,000 cycles per minute.
Unless your blaster runs at 6million RPM, it might suffice.

Multiple timings is getting at me though. Only if there was a way to stick a distributor where that water pump was suppose to be.

Well, Prime and I discussed it at length. You wouldn't want a "distributor" type timing split (separated by 90 deg or more) but maybe separated by a few degrees to "lead" the fire towards the exhaust port to help scavenge the cylinder at EXTREMELY high rpm.

I'm going to see how simply splitting the trigger to each CDi works before doing anything extreme like building a guitar splitter for the trigger coil and bolting it on my blaster... LOL

 

[Rubbersalt]

Im ordering parts to make the splitter, I need a couple of transistors in another project, so ill place an order for 50 of them... Ill build a splitter and send it to your way for cost of shipping.

 

[sicivicdude]

Im ordering parts to make the splitter, I need a couple of transistors in another project, so ill place an order for 50 of them... Ill build a splitter and send it to your way for cost of shipping.

damn, that's very generous of you. What's the approximate size of the unit and can it take some vibration? If so, I'll mount it in a project box and put it under the hood

 

[Rubbersalt]

Ill try to make it as small as possible - less than 1x1x1" i bet.

Shouldn't have any issues with vibrations, ill coat everything with silicone to prevent any water damage.

Its gonna have 1 input leads, 4 output, and +/1. It might take 20 days for the transistors to show up, trying to get them faster.



Edit; Them transistors are expensive, like $11 for 100...lol, Electronics are so ridiculously cheap. That splitter calls for 2, my 2 projects call for 3... I think ill have a couple left over lol.

 

[sicivicdude]

damn, 1" x 1" x 1"?! I don't know where I'll find room for it

 

[Rubbersalt]

If thats to big, i can make it smaller, just send the circuit board and you stick it a housing , imma make it small as posible, might be .5x.5x.5 lol

I made a guitar pedal, the circuit board had 50 components and was about 1.5x1.5x .5 lol

Imma coat all the electronics in silicone to keep them sealed up for ya.

 

[super noober]

very very cool stuff, everytime i read this thread it makes me smile. the out of the box thinking here is addicting, work or not (i kinda feel like it will work personally) this has got to be my favorite build ever. rubbersalt u are the man dude, ur knowledge of electronics is second to none, max rep for u dude, glad to have u on the forum. keeep at 'er civic, i wanna see this beast run in spring!! I:I I:I

 

[sicivicdude]

If thats to big, i can make it smaller, just send the circuit board and you stick it a housing , imma make it small as posible, might be .5x.5x.5 lol

I made a guitar pedal, the circuit board had 50 components and was about 1.5x1.5x .5 lol

Imma coat all the electronics in silicone to keep them sealed up for ya.

I was being facetious about 1" x 1" x 1" being too large LOL. I'm going to try the ignition system like it is, if it doesn't work, I'll tear the harness back part and stick the splitter inline.

What sort of power requirements does it have? I noticed you said 1 input 4 output and +/-1. Is the +/-1 a power input?

 

[Rubbersalt]

It'll have 1 set of input wires(2) and 2 sets of output(2x2) then 2 lines for the power. 9-12volt will be fine. I imagine that it would last probably 2-3hours on a single 9 volt.

Imma stick it in a box that optimizes down force at 89MPH <-- my projected speed of this machine.

 

[sicivicdude]

It'll have 1 set of input wires(2) and 2 sets of output(2x2) then 2 lines for the power. 9-12volt will be fine. I imagine that it would last probably 2-3hours on a single 9 volt.

Oh man, now I have to find somewhere to put a 9volt battery?! This is just getting ridiculous!

LOL!

Sounds GREAT!

 

[the_mrs]

Oh man, now I have to find somewhere to put a 9volt battery?! This is just getting ridiculous!

LOL!

Sounds GREAT!

Be careful. I think the battery might just weigh it down, too much....

 

[Rubbersalt]

Question bout the pipe. The header part of it is segmented j
Into 500 tiny segments right? How did you calculate all them? (I wrote a program for this)

I was using trig, then realized a simpler way based on ratios.

 

[sicivicdude]

Question bout the pipe. The header part of it is segmented j
Into 500 tiny segments right? How did you calculate all them? (I wrote a program for this)

I was using trig, then realized a simpler way based on ratios.

OHHHHHHH NO!

You're trying to build the pipe out on paper first and then make it out of metal.... VERY difficult to get it right without being a math major.... and hell difficult to get right even if you are a math major.

I'm going to go telling all of the secrets now.... the EASY EASY EASY EASY way to make the segments is physically. The porting program spits out s D1 and D2 and L1 for each segment. Make the cone in one piece adding about 1mm to the length. Take the cone and cut it on a metal cutting bandsaw at a diagonal to the intersect. I'll draw a picture of what I'm talking about in paint when my wife gets done with the laptop and show you what I'm talking about.

 

[Rubbersalt]

Ewes time consuming - I'll send ya my program soon as I done lol.

U did the paper model on my yt before. The metal "model" lol.

Currently, the program allows form='divisions of cones into infinite segments.'your job to figure out what angle those need to be welded together.

My next thought, In stead of 2-3'stage pipes,'since your ready doing math and building a billion cones, why not make a 4-6 stage pipe that allow for smoother transition between segments?

 

[sicivicdude]

Alright, so what we have here is the same cone (relatively LOL) cut into different "angle" slices, flipped, and rewelded together. The trick is to keep the angles on the same plane in both planes, difficult to do physically but less likely to cause miscalculations.