Yeah. that's what it looks like to me. I've been lightly monitoring those sources for a little while now, and it's really hard to believe that at...
Where would I look to find complete Seca 550's for sale? I'm looking for comparable sales trying to establish a value, but I'm not seeing any for...
Wow. A bunch of "never do that" in that one sentence. Starting with the most obvious... Never anything loose fitting or dangly around rotating...
Wait.... So the Pope likes Harley's?
Maybe you don't remember seeing them because they were never really designed to be removed from the basket: [ATTACH] I don't remember the sizes...
Does your clutch basket have a roller bearing on the input shaft, or the bronze sleeve bearing? My 550 is the bronze sleeve, but I don't know the...
I've done a little looking into the clutch rattle, and I've come to the conclusion that it's caused by the clutch basket wobbling around on the...
Haha!! Yes, as a matter of fact! I spent the afternoon working with the chainsaw, and then (already hurtin' from the day's work), went and played...
Oh, and I haven't forgotten to look for what schematics I have. It's just that I hurt myself a little bit ago and priorities are elsewhere.
Call them "Pads" or "Bonding pads". They use thin gold wires ultrasonically (I think) welded at each end to connect the leadframe to the bonding...
Macktion, Nice work. Let me fill in a couple blanks, etc... On the ceramic sub-board, everything you have identified as a capacitor, is correct....
I will take a look and see what I can find. Been so long, I don't remember how complete (or incomplete) it was. Let me see what I got.
Yeah, sorry. :D The point of the latter part of this conversation is... There have been huge technological changes from when the original TCI...
Gotcha. I believe you're talking about piecewise linearization (piecewise linear interpolation). And now that I think about it, it's completely...
SQLGuy, Sounds like a neat project. I know there are a couple aftermarket options out there like the microsquirt and jolt something. I don't...
Macktion, Seriously... Been there, done that. Just the other day I was doing some very small electronics work, holding a part with the tweezers,...
Haha! You give me way too much credit, my friend! :)
Well I'm no ignition expert, but if the graph in the FSM is the ONLY piece of info at my disposal, I would just aim for the center of the range at...
Chacal, I haven't seen any of the replacement units with my own two eyes, but I assume they are functionally equivalent from a "black box"...
Bummer. Slipped with the tweezers and it flew across the room? BTDT. Just keep telling yourself that in the grand scheme of things, it was an...
Rooster53, I don't think you'll find a datasheet for the HA1825P unless you have a connection inside Hitachi. I believe I have a schematic around...
Yu Tanaka, I remember your work with your replacement TCI. Neat stuff. http://xjbikes.com/forums/threads/original-ignitor-tci.95931/
Awesome. Love the pic of the die. And I'm with ya for learning anything about the original design, even if it's just academic. I'm happy to help...
Not trying to diminish or dissuade your efforts in any way, but I'm not sure what you hope to learn by looking at the HA1825 die under the...
Nice. Someone's got an X-ray. I suspect the HA1825 is a semi-custom done by Hitachi for use only in their own ignition stuff, so I doubt you'll...
My pleasure guys. Glad to help. :)
If the PO cross threaded the pilot jet, then yes. There is a high probability that is what is causing your rich condition. However, it's probably...
Yeah, I was pretty upset when I first saw that. Then bigfitz52 suggested that it may not have been underhanded, but just poor workmanship. He...
I pulled the Mikunis off my SECA 550 for a rebuild because I've had a float stick a few times. The good news is that I found the smoking gun. One...
What hogfiddles said is correct............
So then we're all in agreement. :)
What chacal said is correct............
Got any pics of said sending units and resistance board? I've (thankfully) never needed to know what they look like.
Yeah, I think I also took my last ride of this year earlier today. Tomorrow morning is supposed to be warm too, but I think I'm going to take that...
I'm not sure how closely the ignition actually matched the diagram in the manual. I did test the original TCI on the bench and looked at the...
My only comment about D2 and L3 was that I think they would be more important than D3 and D4. If you're getting spark noise on Vss and 5VD, it...
Neat project. Thanks for sharing, and thanks for offering up the details as well. I have a couple quick questions/comments: I can see that D3...
Yeah, I bet you've seen some real doozies!
The chuckle wasn't because the warnings aren't warranted. It was for the translation. You could sever something if the explosive gasses explode.
Was giving my battery a tip-top charge in preparation for the upcoming riding season and while it was on the bench, I got a chuckle out of the...
I'm with Stu and thinking it's a dirty connection. A bad connection right where the wire attaches to the battery. When you measured those...
Yes. Make sure everything is surgically clean.
I simply will them out using The Force. Some of them resist, but they are no match for the power of The Force.
So choke didn't help at WOT. Implication is that either A) you are already giving it more fuel than it wants, or B) that your fuel bowls are being...
Did you try giving it a little choke after you had topped out?
Haha! Thanks! Couldn't have done it without you. ;)
I don't ride fast so I'm not the best source to provide input into your high(er) speed question, but I did recently approach the speed you...
Excellent. Now that you've got the emulsion tubes cleaned out, check your plugs in a little bit to see what they look like.
Haha! Yeah, after you said you had a socket that fit the tube right I was wondering if you knew there was a washer there. I was picturing you...
Unscrew the main jet from the bottom making sure you get the washer out as well, and then tap the emulsion tube up into the carb throat: [IMG]
