Author Topic: Transistorized ignition, points style. First ones are ready!  (Read 81120 times)

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Offline hcritz

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #325 on: March 27, 2007, 06:37:44 am »
Hey Mark...
Got the connectors...hope the box shows today...
I'll install as soon as I can and start putting some miles on it. Actually may ride to the coast this weekend...5-6 hours each way.
The Sailboat is ready for Splashdown on FRIDAY!!!!! A long project comming to an end!

Offline Terry in Australia

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #326 on: March 27, 2007, 02:09:59 pm »


Pictured below are the first 2 pre-production units. The one on the right is for use with Dyna coils (or the like), the one on the left (lacking the grommet where the wires come out) is for stock Honda, Kawasaki, etc., Denso coils. The Sharpie is there for size reference.

Looking good mate! ;D
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

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Offline hcritz

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #327 on: March 28, 2007, 07:38:05 am »
Good Morning Mark.
Got the box this morning in the mail...I'll try and get it installed tonight and start putting some miles on.
If the weather is good, I'll put about 12 hours ride time on it this weekend.
I'll keep you posted with the results!

Offline HondaMan

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #328 on: March 28, 2007, 02:35:19 pm »
Good Morning Mark.
Got the box this morning in the mail...I'll try and get it installed tonight and start putting some miles on.
If the weather is good, I'll put about 12 hours ride time on it this weekend.
I'll keep you posted with the results!

Great!

Have a nice ride: I'll be trying mine out, too.
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

Link to My CB750 Book: https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book

Link to website: www.SOHC4shop.com

Offline hcritz

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #329 on: March 30, 2007, 11:16:57 am »
Hey Mark....
Got my box installed last night...ran into an issue that you may or may not know about.
On the 77 (and I would think the 78) there is a crankcase vent device mounted to the underside of the battery box. No way to attache the unit there, so I just removed the tool tray and drilled a hole in the mounting tab and put it there. I may run even hotter there though...sitting right on top of the oil tank and I doubt there were be much air flow there.
She fired right up though and seems to run really well...rode to work today and it seems to be smoother pulling away from a stop and at low speeds...haven't run it past about 40 mph yet though. I did put the timing light on and it seems to be getting multiple fires at low speed...at about 2500 that seems to go away. I still have the condensers attached...let me know if you want them disconnected?
If Mother nature is kind...I hope to put about 300 miles on her tomorrow.

Offline clarkjh

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #330 on: March 30, 2007, 05:56:32 pm »
If your having heating because of no airflow how about a small 12v computer CPU fan to move the air.

James
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SOHC/4 Gallery: http://www.sohc4.us/gallery/v/members/personal/clarkjh/
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Offline HondaMan

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #331 on: March 30, 2007, 07:02:11 pm »
Hey Mark....
Got my box installed last night...ran into an issue that you may or may not know about.
On the 77 (and I would think the 78) there is a crankcase vent device mounted to the underside of the battery box. No way to attache the unit there, so I just removed the tool tray and drilled a hole in the mounting tab and put it there. I may run even hotter there though...sitting right on top of the oil tank and I doubt there were be much air flow there.
She fired right up though and seems to run really well...rode to work today and it seems to be smoother pulling away from a stop and at low speeds...haven't run it past about 40 mph yet though. I did put the timing light on and it seems to be getting multiple fires at low speed...at about 2500 that seems to go away. I still have the condensers attached...let me know if you want them disconnected?
If Mother nature is kind...I hope to put about 300 miles on her tomorrow.


So far, that all sounds about right! I'll be interested in having that extra heat in the box for these tests, too.
The multi-spark thing is typical of used points, because they open at rather irregular rates, especially when the pivots are a little worn and/or the contacts are not smooth. It won't hurt anything: it's responsible for the "extra smoothness" you noted at low RPM. It's generating a bit of extra torque, and more completely burning the fuel, at low speeds with those extra sparks.

When I set it up on brand new points, it rarely gets multiple sparks. Maybe I'll figure out a good way to MAKE it get those extra sparks (like during next Winter?).
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

Link to My CB750 Book: https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book

Link to website: www.SOHC4shop.com

Offline HondaMan

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #332 on: March 30, 2007, 07:04:09 pm »
If your having heating because of no airflow how about a small 12v computer CPU fan to move the air.

James


Clark: we're trying to generate EXTRA heat right now, for testing purposes. I have a special test design for some of the units, to age them extra fast. I will use that criteria to adjust the final design so I can issue a 5-year warranty with these gadgets.
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

Link to My CB750 Book: https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book

Link to website: www.SOHC4shop.com

Offline Jonesy

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #333 on: March 30, 2007, 07:54:07 pm »
When I set it up on brand new points, it rarely gets multiple sparks. Maybe I'll figure out a good way to MAKE it get those extra sparks (like during next Winter?).

Sort of an MSD ignition system for SOHC/4's?
"Every time I start thinking the world is all bad, then I start seeing people out there having a good time on motorcycles; it makes me take another look." -Steve McQueen

Offline hcritz

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #334 on: March 30, 2007, 08:06:36 pm »
Hey Mark...
Put a few miles on today...bike runs real well...definitely smoother at low speeds especially at high load/low RPM situations; where I used to get a bit of shudder...runs very smooth now.
Does is matter that the caps are still attached?


Offline Terry in Australia

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #335 on: March 30, 2007, 10:26:14 pm »
Hey Mark, here's another thought for an additional feature with your ignitions, (apart from the inbuilt timing light and "bypass" switch to remove the requirement of disconnecting the ignition "black box" if it fails) what about an inbuilt "immobiliser"?

Our old bikes are slowly becoming collectable, so an immobiliser would be both a practicle addition to your already excellent product, and would probably make us more popular with our insurance companies too? My insurance company offers a discount for any additional anti-theft devices fitted, so this alone would be a good selling point, I'd reckon? Cheers, Terry. :)
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline Jonesy

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #336 on: March 31, 2007, 05:44:17 am »
So it just takes 4 guys to heft it up onto a pickup truck instead of 2?  ;)
"Every time I start thinking the world is all bad, then I start seeing people out there having a good time on motorcycles; it makes me take another look." -Steve McQueen

Offline HondaMan

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #337 on: March 31, 2007, 11:30:40 am »
Hey Mark...
Put a few miles on today...bike runs real well...definitely smoother at low speeds especially at high load/low RPM situations; where I used to get a bit of shudder...runs very smooth now.
Does is matter that the caps are still attached?



H:
 ??? If by "caps", you mean condensors, it should run with or without. I don't have a well-burned set of points to try it out on, though, so if yours are pretty well blackened, try it both ways, just to see. I suspect this: if you have them connected now and are getting the multi-spark action, it will probably continue to a higher RPM, like around 4000 or so. If they are not connected now and you do connect them, it may revert to single spark very quickly, at about 1500 RPM or so.

Either way, pulling away from a stop sign has more torque.   ;)

Could you send me a picture of the installation, and maybe one of the thingie that's in the way of mounting it under the battery? I'll need to show the others how to mount it on your style of bike, maybe with a picture or drawing.
« Last Edit: March 31, 2007, 04:18:45 pm by HondaMan »
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

Link to My CB750 Book: https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book

Link to website: www.SOHC4shop.com

Offline HondaMan

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #338 on: March 31, 2007, 11:38:25 am »
Hey Mark, here's another thought for an additional feature with your ignitions, (apart from the inbuilt timing light and "bypass" switch to remove the requirement of disconnecting the ignition "black box" if it fails) what about an inbuilt "immobiliser"?

Our old bikes are slowly becoming collectable, so an immobiliser would be both a practicle addition to your already excellent product, and would probably make us more popular with our insurance companies too? My insurance company offers a discount for any additional anti-theft devices fitted, so this alone would be a good selling point, I'd reckon? Cheers, Terry. :)

That's not a bad idea! Put simply, a 3-position toggle switch could do it: forward is POINTS, back is MODULE, middle is NO SPARK. I could probably fit one into that Gold Box I have for you in the end: it's a little bigger than the basic silver ones (costs about twice as much, too.   :(  ). I'll look for a switch that might fit in that one. Keyswitches will be too big in 3-position style, I suspect, but I'll check them out. A 1-position keyswitch would surely fit, though.

When I set it up on brand new points, it rarely gets multiple sparks. Maybe I'll figure out a good way to MAKE it get those extra sparks (like during next Winter?).

Sort of an MSD ignition system for SOHC/4's?

My early testing with this phenomenon shows that a faster-charging coil would be needed for continuous multi-sparks above 5000 RPM. That's why I'm toying with the idea of using some Ford sparkplug coils from the new EEC-VI ignition, one per plug style. EXPENSIVE! The coils cost twice as much as one of these ignitions. But, the circuitry wouldn't be too tough to come up with.
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

Link to My CB750 Book: https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book

Link to website: www.SOHC4shop.com

Offline Roach Carver

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #339 on: March 31, 2007, 06:22:33 pm »
dont want to but in BUT since the security thing was brought up, I had a jeep and anyone who has had one knowshow hard it is to secure one. what I did was cut into the wire that went to the solenoid with a 3 position switch. position one was normal. position 2 was nothing and position 3 was spliced into the horn. I always parked it right outside my window at night and figured if the horn started honking it would probably wake me up as well as scare the thief off.

Offline HondaMan

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #340 on: March 31, 2007, 07:33:12 pm »
dont want to but in BUT since the security thing was brought up, I had a jeep and anyone who has had one knowshow hard it is to secure one. what I did was cut into the wire that went to the solenoid with a 3 position switch. position one was normal. position 2 was nothing and position 3 was spliced into the horn. I always parked it right outside my window at night and figured if the horn started honking it would probably wake me up as well as scare the thief off.
Yep, that could work. During the "hot years" of the CB750 (1969-1973 0r -74), the Honda Four suffered similar theft problems. Mine was attempted 4 times that I know of: I have a 1/2" thick, nylon-impregnated, 3X case-hardened, double-tumbler locked, aircraft-quality cable that can only be cut with a torch, that's always been used to keep it mine. It's scarred up, too, from the attempts on it, but even 72" bolt cutters can't touch it. It cost me $135 in 1971 dollars (about $400 today).
Once, I came out to find the cable wrapped all the way through the rear fork and parway around the rear axle, bending many spokes.
Once, I found a sheared 1/4" bolt lying next to the bike that looked like the cutter broke, trying.
Once, I found a partially-sawed through stair railing at a motel that I had it tied up to. The nylon cover on the cable was cut, but the cable only showed a slight scratch: I guess he had started there first. Never saw him, though.
Once, I found the bike lying on its side, with the rear axle loosened. The perp figured out the cable wouldn't let him have it OR the bike, and left.
And, many parts have disappeared from it over the years. I always figured that since it was seldom beat on the streets where I lived then, people were jealous... :-\

For a while in an apartment I occupied, a dog kept lifting its leg on the pipes, which REALLY pissed me off. I finally hooked up a long extension cable to the bike, with one wire connected to the front spokes and the other to a nail driven into the blacktop nearby. I plugged it in every night, and about 3-4 days later, I heard a dog yiping down the street early in the A.M. That finally stopped it.
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

Link to My CB750 Book: https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book

Link to website: www.SOHC4shop.com

Offline Terry in Australia

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #341 on: April 01, 2007, 05:49:48 pm »
G'Day Mark, the 3 position switch would do me fine, mounted under the battery box behind the sidecover, most thieves would never see it, but if I'm gonna mount the fancy gold one elsewhere, a small keyswitch might be more appropriate? This is gonna be great! Cheers, Terry. :)
I was feeling sorry for myself because I couldn't afford new bike boots, until I met a man with no legs.

So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

"Crazy is a very misunderstood term, it's a fine line that some of us can lean over and still keep our balance" (thanks RB550Four)

Offline hcritz

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #342 on: April 02, 2007, 06:53:51 am »
Morning Mark.
Mother Nature wasn't kind here for the weekend...lots of thunderstorms etc., so I didn't get to ride to the coast
Have managed to put about 50 miles on so far.
Right now the condensers are connected...the multiple fire seems to go away about about 2,500 rpm now.
I'll take you some picts of the installation and the (what I believe is the crankcase vent device) tonight.
Hope to have some nice riding weather this week!

Offline HondaMan

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #343 on: April 02, 2007, 07:42:42 pm »
Morning Mark.
Mother Nature wasn't kind here for the weekend...lots of thunderstorms etc., so I didn't get to ride to the coast
Have managed to put about 50 miles on so far.
Right now the condensers are connected...the multiple fire seems to go away about about 2,500 rpm now.
I'll take you some picts of the installation and the (what I believe is the crankcase vent device) tonight.
Hope to have some nice riding weather this week!


OK, I'll be watching. And doing taxes....a 3-day job, at least.  >:(
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

Link to My CB750 Book: https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book

Link to website: www.SOHC4shop.com

Offline hcritz

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #344 on: April 03, 2007, 07:57:52 am »
Ugggggh...Taxes...Got to do that as well.
Sent you some pictures last night...
The Round device under the batter box is definitely a crankcase vent...Although I think mine may be missing some parts...
Bet there was a filter there at one time!

Offline HondaMan

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #345 on: April 15, 2007, 08:41:37 pm »
G'Day Mark, the 3 position switch would do me fine, mounted under the battery box behind the sidecover, most thieves would never see it, but if I'm gonna mount the fancy gold one elsewhere, a small keyswitch might be more appropriate? This is gonna be great! Cheers, Terry. :)

Terry;
I've found a suitable 2-position switch with locking toggle that could either be used to select TRANSISTOR or POINTS operation. I haven't found one like it in 3-position, yet, but will keep looking. The locking toggle requires you to pull up a little on the toggle lever to release it, then it snaps back down into a locked position so bumps and vibration won't mis-toggle it on you...

This one would allow immediate reversion to points operation by throwing the switch, if the Transistorized Amp should fail for some reason. Alternately, it could be used to turn "off" the transistorized unit, if the other side of the switch were not connected to anything, which would let the failed ignition box scenario be as simple as unplugging the transistor unit and replugging the blue and yellow wires nearby (the original plan). If I can find a 3-position version, the middle position could be OFF, the other two being TRANSISTOR or POINTS operation.

It's a very small switch, but rated 6 amps to cover even the Dyna coils, and the contacts are coin silver so they will be self-healing and self-cleaning whenever the switch is toggled. That's the best arrangement. This switch would cost about $15-$18 extra to install in the unit, though, kinda pricey.

But, you don't want a cheesy switch to fail, stopping the sparks, either...  ;)
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

Link to My CB750 Book: https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book

Link to website: www.SOHC4shop.com

Offline HondaMan

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #346 on: April 15, 2007, 08:43:27 pm »
Morning Mark.
Mother Nature wasn't kind here for the weekend...lots of thunderstorms etc., so I didn't get to ride to the coast
Have managed to put about 50 miles on so far.
Right now the condensers are connected...the multiple fire seems to go away about about 2,500 rpm now.
I'll take you some picts of the installation and the (what I believe is the crankcase vent device) tonight.
Hope to have some nice riding weather this week!

Hi, Mr. H;

Got my taxes done. They can afford to launch that extra shuttle flight now... :(

How's your testing going?
See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

Link to My CB750 Book: https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book

Link to website: www.SOHC4shop.com

Offline Terry in Australia

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #347 on: April 16, 2007, 01:09:13 am »
G'Day Mark, the 3 position switch would do me fine, mounted under the battery box behind the sidecover, most thieves would never see it, but if I'm gonna mount the fancy gold one elsewhere, a small keyswitch might be more appropriate? This is gonna be great! Cheers, Terry. :)

Terry;
I've found a suitable 2-position switch with locking toggle that could either be used to select TRANSISTOR or POINTS operation. I haven't found one like it in 3-position, yet, but will keep looking. The locking toggle requires you to pull up a little on the toggle lever to release it, then it snaps back down into a locked position so bumps and vibration won't mis-toggle it on you...

This one would allow immediate reversion to points operation by throwing the switch, if the Transistorized Amp should fail for some reason. Alternately, it could be used to turn "off" the transistorized unit, if the other side of the switch were not connected to anything, which would let the failed ignition box scenario be as simple as unplugging the transistor unit and replugging the blue and yellow wires nearby (the original plan). If I can find a 3-position version, the middle position could be OFF, the other two being TRANSISTOR or POINTS operation.

It's a very small switch, but rated 6 amps to cover even the Dyna coils, and the contacts are coin silver so they will be self-healing and self-cleaning whenever the switch is toggled. That's the best arrangement. This switch would cost about $15-$18 extra to install in the unit, though, kinda pricey.

But, you don't want a cheesy switch to fail, stopping the sparks, either...  ;)

G'Day Mark, excellent news! I'll happily order the first (and most collectable!) Super Ignition" with the 2 way switch for "super ignition" or "points only" option, and if you find a 3 way switch so as to disable the whole shooting match, even better!

I'm sitting here admiring your new "Super Ignition" test model with heatsink that arrived in the mail today, nice work mate! I'll install it this week and try to get a few miles up, but sadly (miserably, in fact) I'm working this weekend, so it'll have to wait another week before I get any real mileage up, hell, I haven't even ridden my American K0 yet, dammit!

Don't worry mate, due to good ol' Global Warming, there's not much likelihood of cold weather at all this year, so there'll be plenty of   miles passing under these tires, ha ha! Cheers, Terry. ;D   
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So I said, "Hey mate, you haven't got any bike boots you don't need, do you?"

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Offline hcritz

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #348 on: April 16, 2007, 07:34:29 am »
Good Morning Mark!
Testing is going well...bike really runs well with the unit installed...definite improvement at low RMP high load...VERY Smooth!
Have put several hundred miles on and all is good. We are planning a trip next weekend (weather permitting)...that will be about 150 miles each way.
Heading over to the AMA superbike races and festivities at the Barber Motorsports Facility in Birmingham, AL...one of the curators there is a good friend and I help crew their F1 car events. Lots of fun!
My taxes are in the mail...not too bad this year...but then I look at the W2 and see how much I paid over the year and just go OUCH!

Offline HondaMan

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Re: Transistorized ignition, points style. (Updated) Interested?
« Reply #349 on: April 16, 2007, 09:18:54 pm »
It's ALIVE!!! It's ALIVE!!!

The final form of the first batch is complete! The first ones to be finished will be the ones that run Honda's own coils. The ones for Dyna coils will come a little later, after the final testing is completed.

The first ones look like the picture below. These are the "Plain Jane" units, they need no special cooling or airflow requirements, and will run with stock Honda points and Honda (or equivalent 1960s-1970s type) coils. If you have a choice of points, use the Denso (first choice) or Hitachi. The Daiichi ones being sold for $4 or less are very weak in their pivots, and will wear out mechanically long before the Denso/Hitachi ones would: don't buy those for use with this ignition or you will be disappointed. With fresh Denso points and one of these ignitions, you will only need to check your timing about once every 5,000 miles or so, just to see if the rubbing block(s) on the points have worn. This wear will appear as retarded timing from lessening points gap, so just open up the points gap a tiny bit and ride on each year!

I offer these at a 5-year warranty to SOHC4-ers; these first 10 units are $61 each. I'll be contacting you guys who "signed up" earlier, in order of the signup, to see if you want one of these units. The next batch will cost about $4 more because of fluctuating parts costs: sometimes it will go up, or down, a few bucks for each "batch". Those of you who will get Dyna-compatible units will have to pay an extra $4.50 more for the different parts and the heatsink on those units.

The first ones will be available starting next week (4/24/07).

See SOHC4shop@gmail.com for info about the gadgets I make for these bikes.

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Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
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