Post pics of the inside of the 87 cdi please.... see if you can identify some of the components as well. I don't know if you have found my thread about cdi dissection, but I did post some resources to help identify the individual components, and listed out some of what I found as well. Would be very interested to find some of the differences.



Thanks in advance, and thanks for the post!

 

Send that booger to Operose. He's just dying to dissect one and I'm just dying to steal the info to resurrect a couple of '87's.

 

You read my mind buddy

those other guys never got back to me about their busted 87s. If you really need to resurrect them though just use TTR stuff or something similar... I am convinced that I could make any single cylinder cdi work if I have the pulser coil as well.

 

Way back-burner projects. I might break a nail.



I'm waiting on you to dissect the stocker and tell me how to build one from an old transistor radio and 36 cents worth of dental floss. Oh, and make mine with infinitely variable timing via potentiometer.



I'd like one in mauve. I'm into mauve.



RACING mauve. It's the new puce.

 

Don't have any dental floss (my new dentist sure is mad about that) but if you give me some time, a few gum wrappers and another cigarette pack to put it in, I'll have it all friggered out.



Very interested in variable timing as well. Gerry (aka: The Man) sent me his oscilloscope and some other neat stuff, which will hopefully help me achieve the desired results. My bike will be TTR ignition from here on out, but jontow is still running the stock CDI so he will probably let me use it as a test bed as long as I promise not to fry anything (or fix it if I do?). Need to hook my old de-potted CDI up to his bike and get some readings with the scope while it is running. From there can try to figure out what needs to be changed to vary timing "on the fly" or maybe using different curves.





Gman, thanks for the offer, I sent you a PM with my details.



Really I want to go over my bike to reconfirm the changes I made, take better pictures, and figure out where it can be simplified. Then perhaps buy up TTR setups on ebay and modify them for simple/direct usage on TW's for a fraction of the price. We'll see how that goes, though. Need to find a cheap 87 with a screwed CDI so a relatively "plug and play" solution can be found for that, as well (or maybe verify if my TTR setup will work the same as on 88-01).



The wiring was no more difficult than the new LED turn signals I am installing front and rear, so theoretically if you can do something like that you can convert to a newer, cheaper, more readily available CDI. The "biggest issue" (not a big issue at all) is the mounting of the pulser coil, which should be a "relatively easy" fix to make it bolt right into the TW side case and I'm working on that, as well.



Will make sure to paint them all LIZARD RACING MAUVE to increase the ponies

 

Mauve might work, but I'm pretty sure taupe is not allowed. No exceptions.



My 1987 is also running schweetly with the new cdi, yea! I love that little 25 year old bike. Thanks for the report Gman.

 

I own an 05', but I'm curious, I thought it had been mentioned that CDI's didn't exist for the 87's anymore?

 

I also installed the kickstarter kit that I bought from Bay Area (I have no idea why the previous owner removed it and he doesn't remember, he just said it was "years ago" and he thought it was a good idea at the time).

The kit went right in with no problems and every single part, seal, washer, gear, and everything else needed was included (case gasket too). Took me a little under an hour with no fuss. Fit and function perfectly.



I also bought two sets of Banshee handle bars for my 87 and 93 and they raised the height perfectly, all cables and controls have plenty of room. On my 91 I just inverted a set of handlebar caps to raise those bars; going with the Banshee bars is more comfortable for me though.



Now I'm going to disect the other CDI's out of curiosity and see if one might be made well again. No risk at this point.

Thank you to all the board members who keep posting here. I've learned loads.

Same story I got about the 87 TW I just bought.. Who in their right mind would think its more functional not to have a kickstarter?



I'm still struggling to get my bike started... No spark condition, just hoping its not the CDI! The 87's is next to impossible to find so I'm impressed you were able to find 2 working "great white buffaloes"

 

Operose,

Give me your address and I'll send you the original one that was very intermittent for you to mess with (you can keep it). I used a table top disc sander to sand off the casing. When I got down to the potting and saw that there were circuit boards involved, I realized that I was the pig learning math....IOW, I'd just be wasting time and pissing myself off because I know nothing about electronics. I figured if I saw something broken, I might be able to fix it, but.....then I remembered that I'm an idiot when it comes to electronics so I moved on to removing the swingarm on my 93 so I can sandblast it and powdercoat it. That's a much better use of what life I have left.



Admiral,

I don't know if they're still making them new, but if not then apparently there were enough spares manufactured that some can still be had through Yamaha. I called a lot of the places on the internet and they all said they didn't have one in stock but could get one. Ron at Bay Area Yamaha here in Coos Bay, got mine in about 4 working days for $275 (listed for $314). Whether new-new or NOS, I don't know, but it was fresh and new in the sealed Yamaha parts bag. He's checking with his Japan connection for availability of the Big Bore kit. I know it isn't a great increase in size and probably not really worth it, but I've got a BMW F650GS for those days when 200ccs of rampaging Turtle isn't enough to cow the villagers. BTW, Georgie is awesome. I'm thinking of teaching my little dog to ride (tied down in a milk crate or velcroed to my helmet). I'm thinking Hamster ball for a helmet because she likes to be embarressed in front of the other dogs. Good thing I don't have kids.



Teedubs,

Well, I like your sense of optimism about my finding two "great white buffaloes", but like rare buffaloes, their performance is questionable. I'll lend you one to see if it at least makes a spark and if it does then maybe you'll know you need a new one (if you currently have no spark at all). The two I have left will give a spark but they aren't working as they should. I'd just ask that you return it to me when done so I have a spare if I ever find anyone who can repair these rascals.



Operose and Teedubs,

pm me if you want to get to me with addresses. Give me your screen names so I know it's you two.

 

Completely adjustable CDI units can be had for TTR bikes for a little over 100bux. My newest thought is whether I can buy just the harnesses, modify and make available so that one could simply buy an adjustable TTR ignition and plug it into their TW200 using the modified harness.



Now I need another harness so that I can try to get jontow's bike running with TTR ignition and TW200 pulser/source coil. If the pulser coil and source coils don't have to be changed this will all be SOOOOO EASY

Imagine being able to swap to a readily available (and adjustable if preferred) ignition system without even having to take off the side case. Maybe it doesn't mean as much to those who haven't been there, but this is serious business to someone that has spent easily 100hrs trying to find the best and easiest solution

I will try to get this worked out ASAP. This would be a serious advancement in keeping TW200s running for many years to come.

 

You rawk.



Guess I'll quit saving dental floss.



Idjitproofing variable advance could prove "interesting".



I'll write your disclaimer.

 

I might've been wrong about variable. It looks like the readily available ones just have a "hotter curve" but also 1k rpm higher rev limiter, which is interesting...



Please have the disclaimer complete asap hahaha

 

"Hotter curve" makes me nervous, since it's probably a fixed setting. It would really be nice to advance/retard at will in accordance with fuel quality, elevation, etc. But I'll take what I can get

Truly do applaud your efforts on this stuff. Don't think we don't notice.

 

Well.. how about "programmable" rather than "adjustable"?



http://www.ignitech.cz/english/aindex.htm



I have a [very] local contact near them who has offered help if we need to communicate with them about our needs

 

A few weeks ago I looked a PoS 87 TW off CL in Ind. The owner had the CDI compressed with a vice grip to make work. Guess he thought I wouldn't notice the vice grip and ask about its function. Long Story Short squeeze your CDI and it may work.

 

Guess you may know by now, or not, CDI is repairable. also I am making new replacements for most TW and BW

 

tom, I might be looking for a replacement cdi. I'm trying to get my tw200 going again after being frustrated and not touching it for awhile. What you got for a 1987 tw200?

 

Right now I have 3 cdi for 87 only but they do not have the safety features, still have clutch/started interlock. $140 to members PM me your email for an invoice.

 

The safety features are just the kickstand switch and clutch switch right? So basically with the new CDI I could possibly start the bike in gear or with with kick stand down. That is all right? I sent you a PM. Was curious about sending my existing CDI for repair possibly. Thanks

 

yes but the interlock for the starter would still work so you would need to have the clutch pulled in for the starter to work. yamaha cdi's are very hard to repair, i can do it but it takes a lot of time. i usually charge $60 but that is not really enough plus i cannot test them since they use a crazy power system.

 

I sent you private message Tom. I'd like to do one (repair) or the other (get new) from you.

 

Tom repaired my '87 CDI and it works great!

I would not hesitate for a brand new one if I needed it but I would opt for no rev limiter and a much hotter advance curve -- but those are just my personal preferences.

 

Just bought one for my 1987

 

Report back how you like it. A lot of people want to know.

 

Hi, it may be that there is a problem with cranking speed and my CDI. Does anyone know what the normal cranking rpm with the electric starter is?

 

Do you make 87 cdi's still?

 

Your source for new CDIs for old Yamaha products

Yamaha CDIs, TW200 CDI, TW125 CDI, AG225 CDI, XT225 CDI, TTR225 CDI, Warrior CDI, Big Bear CDI, Moto 4 CDI, Kodiak CDI, Yamaha Scooter CDI

www.cdiparts.com

Seems to be still active.

 

Thanks