Father Son 75 CB200T Rise From the Ruins

Sonreir said:
That is a 22,000µF capacitor. Since you're running without lights on lucky, you can also probably get away without running a battery. The capacitor stores voltage between cycles of the alternator so that everything can stay running. Your bike will be running solely from the alternator, so no electric start, and possibly no bump start, either.

Whether or not it works will depend a lot on the health of your charging system, which is why I included the R/R as well. The Sparck Moto R/R has lower internal resistance than most R/Rs on the market, and so your bike will be producing usable wattage lower in the RPM range than many other models of R/R will provide.

Some wiring changes will likely need to be made to accommodate the cap, but I'm optimistic. The red wire to the the ignition and the rectifier will be the ones to plug into the cap (same wires that would have gone to the battery) and the black wire from the cap can be bolted to some bare metal to act as the negative terminal.

Capacitors (especially big ones like this) can store enough power to kill someone and they can take quite a while to bleed down after use, so be careful. If you need to work in and around the cap after the bike has been run, discharge it by touching the positive and negative terminals together. You can also wire in a discharge circuit to make that task easier.

To test it out, wire it into place where the battery used to go and give the bike a couple of kicks with the ignition switch off. Then turn the key on (with the kill switch set to 'run') and kick it over. Hopefully Lucky will start right up and rev freely.
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I have a cb200. Is the new r/r plug and play. I'm using a ballistic battery. Stock ignition
 
Cafe Mike said:
I have a cb200. Is the new r/r plug and play. I'm using a ballistic battery. Stock ignition
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Here is 3 years and 30 pages on the development of the DVS dual velocity stacks from the super duke string. http://www.superduke.net/forum/viewtopic.php?f=1&t=14265
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That 35 page thread was painful. In the end they managed to prove that with different stack designs it's possible to tweak the power band and get around 4% more top end but the DVS tests were inconclusive.

There were early claims for mid range improvements that may have been just the effect of a longer stack, but that wasn't tested so it's hard to tell. They could have just created 3d printed stacks and flow tested them. or grabbed a bunch of cheaply machined one offs and tested those on the dyno and saved 2 years and 1000s of hours.

We know from Vizard and Bell what shapes work and dyno tests we did with different stack lengths showed a tiny change. It was measurable - just. Always fun to see what others are up to.
 
Teazer we are taking copper and are trying to mimic the cb750 velocity stack but with a bell mouth http://youtu.be/cgnB4bmodv4 so we can test the two on the Dyno


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We have two choices were either going to try to spin it on a lathe or the flare it and then take quarter-inch copper tubing make a donut for the bell mouth and then braze it.


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One of my engineering friends said we could attach an electromagnetic coil to it to align the electrons :)


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Modelling clay sounds like the way to go - for about 2 nanoseconds :)

And the guy spinning on his lathe is going to lose finger or whole hand real soon.

You could get http://www.steeldragonperformance.com/products_2.html to make some to your design. Go for a 6-10mm radius on the intake flare and around 5-9 degrees of taper and see how that works. If you can get an elliptical flare it's even better.
 
teazer said:
A modern 250 single MX 4 stroke makes around 35HP at 12,000. That's the target ;-)
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I wonder how many will read this thread and say "wow that was painful" ;) that sir is a noble goal.
 
+1 But...
Should be turned from a bit of hickory to match the seat....

I thought metal spinning around a mandrel was the easyest way to get 2 or more matching forms ( the real reason for a hardwood stack)
 
Anybody need a velocity 3/4" velocity stack? My friend Benjamin goofing around... Or a bowl and notice the fine use of a door handle for a mandrel I sent him the video and minus the gloves voila he told me "not bad for a first try I made a mandrel and hardened a tool!" Lol
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Texasstar said:
Anybody need a velocity 3/4" velocity stack? My friend Benjamin goofing around... Or a bowl and notice the fine use of a door handle for a mandrel I sent him the video and minus the gloves voila he told me "not bad for a first try I made a mandrel and hardened a tool!" Lol
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3eqara3e.jpg



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a video of Benjamin teaching Zeke lathe safety...go to 1:58 "you want to see something gross check out lathe accidents on YouTube" http://youtu.be/-YBPkUhW9vU


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David of Wells Racing *with a slow Texas twang "well hell I've never tried that before c'mon over after school" as uncle Teddy Nugent would sing yank my crank we are gonna take the cb200 crank apart today. Anything we need to know since Wells does cars not motorcycles? Lol


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It's a simple press job but he needs to scribe the wheels first to aid in assembly/alignment and measure it all. He will also need some jigs to hold the crank as he presses it apart.

And if you haven't pressed a crank apart before, be ready for the crack as it breaks loose. It comes as quite a surprise the first time. :)
 
teazer said:
It's a simple press job but he needs to scribe the wheels first to aid in assembly/alignment and measure it all. He will also need some jigs to hold the crank as he presses it apart.

And if you haven't pressed a crank apart before, be ready for the crack as it breaks loose. It comes as quite a surprise the first time. :)
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there is a notch on the top of each flywheel that are all aligned...can this be used to reassemble?
 
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