Topic: RE: Tytronic Electric ignition $75 from China

[Terry in Australia]

I think I might have to try one at that price!

[rotortiller]

Nice! Thanks for the feedback. Still only $75?

They sell two units for  SOHC 4 cylinder Hondas, one blue and one orange. The orange unit is 20 dollars more and the version I tried because it is different from everyone else's, having dwell control with the two oppositely polarized magnets to meet that end. Was going to cheap out with the blue unit still selling at 75.  For 20 bones more it was easy to swallow the added cost as it better meets the stock Honda coils duty cycle. I have over 100 miles on it now and hope it will last a very long time. They have similar systems  mounted to cylinder head positioned camshaft driven points and I'd think it would be much hotter there. Shipping was 10 dollars and I had it in 5 days.
rt

English instructions:  https://www.facebook.com/media/set/?set=a.1691476597537846.1073741842.100000265676551&type=1&l=e9e62094bb

[Jore]

The units are about 10 bucks cheaper if you buy them directly from their website.

[rotortiller]

I did not see the newest orange unit on the website so did the ebay thing. Still 67 plus 10 shipping for the older unit is nice.

rt

[Jore]

I placed my order earlier today, so I hope they get here soon, between the carb bugs and the points bugs I haven't ridden my bike that much.

[Terry in Australia]

It'll be worth the wait mate, I remember when I installed a new old stock Martek unit on my Suzuki GS1000, the 30 year old OEM igniter box failed because the bike was parked outside near the sea, so even though it ran, it was like riding with points, just felt like it was running rich all the time, with stock CV carbs. The Martek threw a fat blue spark, and it became a joy to ride!

[Jore]

It'll be worth the wait mate, I remember when I installed a new old stock Martek unit on my Suzuki GS1000, the 30 year old OEM igniter box failed because the bike was parked outside near the sea, so even though it ran, it was like riding with points, just felt like it was running rich all the time, with stock CV carbs. The Martek threw a fat blue spark, and it became a joy to ride!

That exactly! It seems to run rich no matter how much I lean her out.

[PeWe]

It'll be worth the wait mate, I remember when I installed a new old stock Martek unit on my Suzuki GS1000, the 30 year old OEM igniter box failed because the bike was parked outside near the sea, so even though it ran, it was like riding with points, just felt like it was running rich all the time, with stock CV carbs. The Martek threw a fat blue spark, and it became a joy to ride!

That exactly! It seems to run rich no matter how much I lean her out.

That's really strange.
I have tried to understand how I could run my bike with 836, ported head, cam. BIG main jets,  CB750 std ignition, mostly aftermarked Daichii. Ignition wires replaced, caps unknown brand with unknown resistance
Stock carbs: needles 1 step richer, main jets 147.5, pilot stock 40. Pods. Worked really fine with good response and behaviour from idle to WOT.
Most km done was touring in Europe

[Terry in Australia]

Yeah, it might be slightly different fuel from country to country Per, here in Oz we got rid of leaded fuel in the early 2000's which really messed with older cars and bikes, back before then we only had "Standard" (around 92 RON) and "Super" (around 95 RON) so when we went to unleaded most older bikes ran fine on 91 RON unleaded, some ran OK on 95 RON unleaded, and most ran like sh1t on 98-100 RON unleaded.

I was running 100 RON unleaded in my 1993 BMW K1100LT and it loved it, but my CB750F2 with brand new OEM points plate and coils/plug caps didn't like it at all, just like has been said above, it ran really rich. I'd replaced them because I had a real problem with the bike when I first bought it that whenever I rode in the rain (even in just a wet mist) the bike would run like sh1t, but in the end it turned out that the F2's ignition key switch was faulty. Anyway, I bought a new old stock Dyna III from a member here (Mike Beltrami) back in the Greenspun days, and it produced a fat blue spark, so I tried some Shell Optimax (98 RON) with the Dyna, and it ran as well as the BMW! Seriously, there was virtually no cranking, I'd just press the button and it would fire right up, and just ran better right thru the rev range. 

From that I surmised, that the weaker spark from the points ignition wasn't effectively igniting the fuel/air mix. I've seen a similar thing happen on my first Suzuki GS1000S that had the factory electronic ignition and worked fine with a fully charged battery, but the alternator's stator was stuffed so it couldn't keep up with the power requirements of the bike on a long ride, and as the battery got flatter, the engine seemed to run richer, something almost impossible on a bike with CV carbs and stock jetting.     

I've got another Dyna III that I bought from another US member (Chewbacca) recently that I'll install in my K2 "Bitsa"so hopefully it'll be as good as the one in my old F2, and if so, with 125 mains and pods filters, it should run pretty well for a stocker! Cheers, Terry.      

[PeWe]

Good things to be aware of. This can explain why the bike "suddenly" run like #$%* when riding today compared with the 80's when the fuel was different, no ethanol in the tank. My bike has always got 98-100 RON.
Unleaded in Australia and USA is 10% ethanol? Here max 5%. I'm sure that will make a difference too.

This is what this forum is for, upgrading the bikes so they can run as well as in the old days or better with the different conditions the bikes have to cope with today.

[rotortiller]

Jore and Terry, be sure to report back on your findings with the blue Tytronic unit. Wondering if I should order another (but in blue) for my brother's CB 750 but will wait for your opinions. I agree after a few hundred miles on the thing this electronic unit does fire better than with points actuation and I can feel a slight difference in smoothness even though engine power output is the same. Never thought I'd be saying that and that's while using the same fuel.



rt

[Jore]

The company sent me an email last night asking for my bikes model so they could send me the correct part, hope it gets here soon.

[jamesk]

was just searching on Ebay and see that you can get a new Dyna unit for $120.00 (the orange Tytronic on Ebay is $105.00 with shipping).  I'm not sure the difference between the two but it's been my experience that returning something defective to China usually isn't worth it due to the shipping costs (much, much more $$ to sent US to China than to ship China to US).  Something to consider.

[Jore]

I'm not in the US, so most of the time having stuff shipped from there isn't an option for me.

On a side note, I was thinking iof it could be possible to use this contraption as a trigger for a cdi unit or something like that.

[PeWe]

Funny coincidence. I visited a friend that has a garage full with CB750 parts and some bikes since I needed some parts for my K2 build.
He found a NOS Gerex multi spark ignition with huge coils while we talked about CB750 and tuning stuff and looked at various cylinders and boxed with old big bores.

He remembered he could run the bike really rich jetted and combust all fuel which is a recipe for power!  Dragbike from the 70's and early 80's

I remembered this thread and your claims to be able to run better with an electrinic ignition, std ignition too rich.
One factor that is easy to remenber and get verified.

This might be what the Hondaman ignition will improve too. Stronger spark, maybe longer duration too....

[rotortiller]

I'm not sure the difference between the two

The 67 dollar Tytronic blue unit would compare to your 120 dollar Dyna. The 95 dollar orange Tytronic unit has two magnets instead of one, the second being in position to offer near stock Honda dwell values. Kinda of need to compare apples to apples

much, much more $$ to sent US to China than to ship China to US

And you are perfectly correct US  shipping is much more expensive than shipping China outbound for 10 dollars. Gotta love China for doing business.


rt

[PeWe]

You will install better coils too?

[jamesk]

I'm not sure the difference between the two

The 67 dollar Tytronic blue unit would compare to your 120 dollar Dyna. The 95 dollar orange Tytronic unit has two magnets instead of one, the second being in position to offer near stock Honda dwell values. Kinda of need to compare apples to apples

much, much more $$ to sent US to China than to ship China to US

And you are perfectly correct US  shipping is much more expensive than shipping China outbound for 10 dollars. Gotta love China for doing business.


rt

I see.  I'm still running regular points setup on both my CBs but I may try out an electronic ignition setup.  Do you have to also upgrade the coils when you do this?  I noticed that some of the listing for these setups are a package with coils included so I wasn't sure.

[754]

 Find outvwhat ohms the coils in the kit are .

[lrutt]

A rich mixture will NOT make more power. You have to have the right mix of O2 with fuel. It might run ok with a rich mixture and a hot spark, but the ideal mixture will make more power unless you add some type of oxidizer.

[Terry in Australia]

Funny coincidence. I visited a friend that has a garage full with CB750 parts and some bikes since I needed some parts for my K2 build.
He found a NOS Gerex multi spark ignition with huge coils while we talked about CB750 and tuning stuff and looked at various cylinders and boxed with old big bores.

He remembered he could run the bike really rich jetted and combust all fuel which is a recipe for power!  Dragbike from the 70's and early 80's

I remembered this thread and your claims to be able to run better with an electrinic ignition, std ignition too rich.
One factor that is easy to remenber and get verified.

This might be what the Hondaman ignition will improve too. Stronger spark, maybe longer duration too....

If your mate wants to sell you his Gerex Per, buy it, it'll be a great "period performance enhancement" for your bike, even Lloyd likes them, and he hates everything!

I've got one sitting here that came off a Russ Collins Suzuki GS1000 race bike, I'm pretty sure it'll work on a CB750 as I've used a DYNA S out of a CB750 in a GS1000 before with good results.

One day I might try it, maybe on my next build? So many projects, so little time......

[rotortiller]

I'm running stock coils and they run to the red-line fine so I won't be altering. If I want to go faster 'old school' I do purple or green.



rt

[Terry in Australia]

Nice! I'll go purple, you go green!

[PeWe]

Funny coincidence. I visited a friend that has a garage full with CB750 parts and some bikes since I needed some parts for my K2 build.
He found a NOS Gerex multi spark ignition with huge coils while we talked about CB750 and tuning stuff and looked at various cylinders and boxed with old big bores.

He remembered he could run the bike really rich jetted and combust all fuel which is a recipe for power!  Dragbike from the 70's and early 80's

I remembered this thread and your claims to be able to run better with an electrinic ignition, std ignition too rich.
One factor that is easy to remenber and get verified.

This might be what the Hondaman ignition will improve too. Stronger spark, maybe longer duration too....

If your mate wants to sell you his Gerex Per, buy it, it'll be a great "period performance enhancement" for your bike, even Lloyd likes them, and he hates everything!

I've got one sitting here that came off a Russ Collins Suzuki GS1000 race bike, I'm pretty sure it'll work on a CB750 as I've used a DYNA S out of a CB750 in a GS1000 before with good results.

One day I might try it, maybe on my next build? So many projects, so little time......

Aha, 2 stroke bikes! I hope I'll see and hear one next season. I was close to buy a Kawasaki 750 back in 1978, but I found the bike I still have a couple of months later.

I heard later on that the guy that bought the Kawasaki had an accident with it since the plugs became wet and suddenly it cleared with a lot of sudden power and off the road it went...!

Terry, you have the Gerex coils too? I think my friend had blown one Gerex ignition system back  in the days since he used wrong coils.
He has several Dyna 3, Martek and similar stuff too. Plus a box with old 20-30 p plates. I do not need to name it in this thread I saw a blown Dyna 3, exploded while driving.

The coils are big for my bike. My black Dyna coils (5 ohm)  fits well as std coils. Only thing is the bad post to ignition wire which can come loose. I'll fasten the wires better close to the coils.

[Terry in Australia]

Yeah mate, the Gerex coils are huge, and were mounted on the outside on the Suzuki, behind the seat, from memory? I don't think the Gerex will work without them? I've never heard of a Dyna III blowing up, but I ruined another Martek when I accidentally fed power into one of the signal wires. Luckily I had a boxful of old Marteks back then (I still have several) so I just threw another one on.

I've got Hondaman's old Dyna III here, I think the "black box" failed after 20 years or so, so he made up one of his ignition amplifiers and when I bought a couple I asked him for the remains of his Dyna III as I had another black box that came with some parts I bought. Cheers, Terry.