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High Performance Bicycle Engine Tips and Motorized Race Bicycles We all want our bicycle engines to push our bikes faster. Get exclusive engine modification tips and suggestions from us. Also check out some of our racing members builds

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  #21  
Old 09-10-2013, 10:46 AM
KCvale KCvale is offline
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Default Re: Performance CDI layout and schematic diagrams

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Originally Posted by Huffydavidson View Post
KC, the problem switches is that with the slightest is vibration you lose contact which in turn will cause a erotical performance and possible engine damage. It's been tried before.
Well that is just silly, I use all kinds of switches on my motorized bicycles and many other things and they all work as intended, if the 'slightest vibration makes them fail' is the problem you have then either your bike vibrates like an unbalanced blender or you are using Wallmart quality switches.

I use quality switches be it toggle, DIP or Keylock and after 30 years of dinking with little PC Motherboard jumpers I'll use DIP switches like this, 10 for $6, when I build mine.



I am regretting throwing out all of my PC board making equipment (except the drill press, tiny drill bits and black light) when I moved as I had everything for photo-etching PCB's and made over 100 little devices from my own PC design to finished product.

It's not cheap to get started nor easy to do, and it's messy, especially the etching solvent as it is designed to eat copper so it eats everything it touches.

Not worth it for the hobbyist to make one item but well worth it if you want to build 50 or more a year of something as you can lay out several on a sheet of copper covered PCB and etc a few all at once and cut them out and drill 'em.
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Last edited by KCvale; 09-10-2013 at 10:49 AM.
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  #22  
Old 09-10-2013, 11:16 AM
KCvale KCvale is offline
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Default Re: Performance CDI layout and schematic diagrams

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Hi KCVale, thank you very much for that, much, much better. Ur question about the miniature pots fits in perfectly with the next step I was meaning to describe.
You are welcome for the pic hosting and you can use them anywhere, I don't care about direct pic linking for things like this.

Keeping with the idea of a sealed CDI box it has to have external adjusters as things change, from just adding an X-chamber to new Mag coil or magnet to a whole new engine you want to be able to keep using it and just make adjustments for the changes.
Quote:
By the way, nice job on the key lock ignition there KCVale, nice looking bike also, wot we can see of.
Thanks, that is a pretty old build, at least 3 years ago as the pics were taken when I first moved into the new place and the shop carpet was brand new.





The carpet looks nothing like that now hehehe ;-}
Quote:
The 3 position switch for the timing caps isnt a bad idea either, for a daily ride type aplication.
Cheers
I thought about a variable cap for that too but they are pretty unreliable and hard to find so just a rotary switch or a couple of DIP's would be better and again something you could adjust externally of an enclosure.

What coil are you using?
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  #23  
Old 09-10-2013, 11:40 AM
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Huffydavidson Huffydavidson is offline
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Default Re: Performance CDI layout and schematic diagrams

Deleted do to incorrect information.
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Last edited by Huffydavidson; 06-01-2015 at 07:26 AM.
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  #24  
Old 09-10-2013, 01:42 PM
KCvale KCvale is offline
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Default Re: Performance CDI layout and schematic diagrams

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Now if you'll excuse me I have to make another pitcher of margaritas !! Switch it Bro ham !!!! LMAO
Frothy with salt on rim for mine ;-}
Ever had Mescal Margareta's?
Back in the days I played in Nogals I'd bring home a local Mescal called Piramede for 'rita's, simple mixing instructions.

Fill blender with ice.
Plop in a little 8oz can of frozen limeaide.
Fill remaining blender room with mescal including the worm (about 1/2 a bottle).
Mix a little and get a very different alcohol high.
Don't forget the salt and lime ;-}

Note, the US mescal is a joke at like $30 a 1/5th so don't bother but that local stuff at like $5 was outstanding.
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  #25  
Old 09-10-2013, 09:03 PM
ivan H ivan H is offline
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Default Re: Performance CDI layout and schematic diagrams

Hi KCVale, thats is a nice looking bike. I think the switches would be ok, especially the little slider type that u show above. I cant see them failling. In amps I use mini toggles to control relays (with footswitch over ride), or mini DPDT or TPDT toggles for signal routing, & use just normal trim pots for like bias voltage adjustment & have no problems with vibration. When u think of an amp head sitting on top of a 4 x 12 inch speaker cab belting out in the viscinity of 120 decibels for hours at a time they are being subjected to a fair bit of vibration without a problem. It wouldnt be hard to damp a lot of the vibration when mounting a CDI to ur frame.
I also considered using a variable cap (trimmer cap) but tend to agree that there'd be reliability issues.
Putting together small things like CDI's to sell isnt really my trip,,, now valve (tube) guitar amps, thats a different story.
With regards to the 2 pix u helped with, I dont know how to move them or link them anywhere, there fine where u've put them. I do appreciate, very much.
Well, its 11am,,, gotta be margarita time. Cheers

Last edited by ivan H; 09-11-2013 at 04:47 AM.
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  #26  
Old 09-15-2013, 12:16 PM
Thud Thud is offline
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Default Re: Performance CDI layout and schematic diagrams

Just popping in to say thanks for the clear drawing of the circit.
It will be a good "deep winter" project for me.

Any one here ever used the laser printer/iron transfer proccess for prototyping pc boards?
I just did a run of pcb's to hold some hall sensors on an e- project. Simple to do & radio shack has the ferric chloride on the shelf.....drilling the holes is the hard part. (Thank you mighty Dremel drill press)
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Last edited by Thud; 09-15-2013 at 12:17 PM. Reason: Schpelingk
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  #27  
Old 09-15-2013, 12:41 PM
KCvale KCvale is offline
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Default Re: Performance CDI layout and schematic diagrams

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Originally Posted by ivan H View Post
Hi KCVale,
With regards to the 2 pix u helped with, I dont know how to move them or link them anywhere, there fine where u've put them. I do appreciate, very much.
Well, its 11am,,, gotta be margarita time. Cheers
Just right click the pic and click 'Copy Image Link', then you can paste it anywhere you want as it is a direct link to the image on my server.
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  #28  
Old 09-15-2013, 01:19 PM
KCvale KCvale is offline
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Default Re: Performance CDI layout and schematic diagrams

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Originally Posted by Thud View Post
Any one here ever used the laser printer/iron transfer proccess for prototyping pc boards?
I just did a run of pcb's to hold some hall sensors on an e- project. Simple to do & radio shack has the ferric chloride on the shelf.....drilling the holes is the hard part. (Thank you mighty Dremel drill press)
Never tried the iron-on transfer thing, I used photo sensitive copper boards and printed my schematic on a clear plastic sheet, put the sheet on the board under a black light, then dropped the board in the etching solution.

Everything that was not covered by the schematic printing gets etched away.
That being the case you have to be very careful with the board once you take it out of the black bag as even sunlight will activate the photo-sensitive solution and it's copper will be etched away.

Be very wary of that ferric chloride solution, that stuff is nasty and will eat most anything except glass and some plastics.

I don't have a dremmel, I have a drill press with a 1/4" drill that will hold the tiny drill bits but regardless a drill press of any kind sure makes short work of drilling all the component lead holes.

Though you could just use a black Sharpie on a piece of thin clear plastic like those 8 1/2x11" notebook plastic cover sheets to draw your schematic on there are (or at least were) pretty cool free computer programs with all kinds of pre-made part templates which for things like IC chips, transistors, relays, etc made the job a whole lot easier so check into that if plan to make boards.
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  #29  
Old 09-22-2013, 06:03 AM
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Huffydavidson Huffydavidson is offline
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Default Re: Performance CDI layout and schematic diagrams

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Last edited by Huffydavidson; 06-01-2015 at 07:25 AM. Reason: typo
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  #30  
Old 09-22-2013, 05:21 PM
ivan H ivan H is offline
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Default Re: Performance CDI layout and schematic diagrams

Hi HD, great idea using 3 jumper pins in each position instead of 2, so that when the component is taken out of circuit the female (jumper shunt) is still attached to the board. If everyone contributes their ideas we can really refine this sucker. Great to hear that on ur first attempt it outperforms ur Jag CDI. Well done. Cheers
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