Discussion in 'The Garage' started by Team Junk, May 15, 2020.
Said I made a Bell Punch yesterday. Never said that's all I made.
The Gonzo box itself draws so little power I'm having trouble measuring it. I have one that has been cut open and one thing that was exposed was the power input filtering. This box was designed for a electrical noisy environment
The only signal that would likely interfered with is the pickup leads which are a balanced circuit that by nature noise canceling. The original TCI system was designed when Hall effect pickups were not common. Hitachi used a magnet and pickup coil which operates at a much higher voltage level which minimizes the effect on the signal. On my test bench the pickup wiring is very close to the spark plug wires and I see no noise on the oscilloscope traces and on Jim's traces also.
That's what I doing here by asking for feedback
That sure is pretty and pretty much what I envisioned.
What is the what appears to be a phenolic block with the 3 screws?
Looking forward to you getting it spinning and I'am hopeful that the pickup will see the steel screw going by.
If it was a concern, running a twisted pair from the pickup (such as my pic above) is a tried and true method of noise reduction. I have a new GN250 pickup. Suzuki did not see fit to run a twisted pair off it. Don't think it's much of a concern.
What did the gn250 pickup ohm out at ?
Phenolic block is the connection point for the pickup. Gonna do the same to the SG... hard wire from GN box to motor.... and quick disconnect at the stator. That way you don't have to disassemble half the damn bike to replace the pickup.
225Ω. The mount bracket is molded into the pickup. If it weren't for that it might be viable. Still ponderin'
Things are looking up in the Gonzo world.
Heads up. A upper level low is approaching from the west and all hell is supposed to break out tonight here. From previous experience should be knocking on your door Saturday or so .
Speaking for myself, I have a late model running TCI and I intend to have two, at least. My current desire is the have a module as a spare (I really don't even know what module to buy where) and the harness adapter to plug it in. I just haven't reached the process of doing it.
Good plan Marty. I'm doing the opposite right now.... running the GN box through the pigtail as the primary, with the original TCI still installed as the backup. About all you'll also need to do is slot your TCI pickup. Timings slightly different between boxes and will prolly need adjusting when switching from one to the other.
Just had a thought.... Drill 2 small 1/16" holes in the TCI pickup mount tab... one on each side. Now, check and adjust timing as required to make sure the TCI is set right. Then, drill through one of those holes into the stator just enough to make a (dimple) reference mark.
Next... hook the GN box up and repeat.... adjust timing and drill the reference mark for that in the other hole.
Now.... you can swap boxes on the side of the road without needing a timing light.... just slide the pickup as required to align the respective reference mark.... start your bike and press on.
I'm reposting this from a different thread because of the ongoing discussion of advance curves.
Here is the readers digest version. The first post has the estimated advance curve which has pretty much what we are seeing in the meat world. The advance chart comes from @TwoManyXS1Bs who recommended the 35 degree total advance. The fuel we buy today is whole different fuel than what was available in 1967 when the xs650 was being designed. I have looked at the advance curves of a lot of bikes in the last couple of years and the Gonzo is right there in total advance on modern bikes of similar tuning. The lochin 300 that the Gonzo was designed for is a pretty good match in tuning and cylinder capacity. I think that a few degrees less advance is a nice safety margin considering todays fuels and in my case 100+ degree summer days in my part of the world.
The other thing to consider is the difference in total advance is probably in the same range as the slop in the steampunk advance unit and cam chain slop on the stock points system.
Oddly enough flyweight governors date back to the victorian age of steam.
Even longer than that. Think wind mills.
Christiaan Huygens is credited with flyweights back in the 1600's.
I've always associated them with steam engines but it doesn't surprise me that they date back that far.
He was Dutch. The Dutch didn't invent windmills but they did use them a lot.
Quick question does anybody know what time of the week caused most of the damage to windmills in Holland that caused them to disappear?
I'm thinking a gofundme to get you a clear alternator cover. That's too pretty to cover it. The phenolic is so retro cool.
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