Coils

[NC Steve]

Thanks for the update, Bob, and glad to hear that your new Dyna coil fired up at 31 F! Hopefully I'll have similar good luck!

And, for the record, my '84 had the upgrade red coil, no cracks anywhere, but was only putting out between .6 - .7 ohms, so it was definitely weak. I think with the new Dyna coil + new wires and plugs my starting problems will be over (I hope!!)

Steve

[NC Steve]

TA DA!!

[Justin B.]

Cool, I suppose the mount IS a bit prettier than mine...  Good show! [smiley=2vrolijk_08.gif]

Did it start?

[NC Steve]

Oh yeah, it absolutely started.
Gas on, choke on, switch on, hit the button and instant fire up!
Drop to half choke, then none, and it was idling smooth within 2-3 minutes, impressive since it hadn't started in about 3 weeks!

PS: Here's the old Bosch, by the way...

[Justin B.]

Good deal, hopefully these Dyna coils will live a lot longer than the stock unit.  I may put my other one on Barbara's bike as once it gets under about 60 degrees hers is kind of a PITA to start.

[Rufus]

Great info here. Thanks. I put the engine from an '80 RT into an '83 R65 chassis. I used the dual output coil from the R65. It became a blue smoke generator on my ride to Tail of the Dragon a couple of weeks ago. What do you all think should be my coil setup? Two 6v blues or a something like the dual output Dyna?

Thanks again.

[Rob Valdez 79 R65]

As long as the engine runs and has a healthy blue spark, I would say not to worry about your coils.

The smoke is most likely NOT related to your coils in anyway.

We are going to need to know as much as possible about the R100 engine to help at all.
Justin is trying to bring a LS back from the grave, and he is having similar smoke issues (see http://suraklyn.com/yabb/YaBB.pl?num=1165102004 ).
You may have troubles inside the engine.  Did you save the 650 engine?

[Rufus]

The engine died while climbing up to Deals Gap. After the smoke disapated, the coil was leaking oil or PCB's whatever and after replacing with a $15 used coil from a Japanese bike in Robbinsville, NC, the bike started and ran fine. It got me home to N. FL.

The engine came from an '80 R100RT that had been converted to an S. No engine mods. Bolted right into the 1983 R65 chassis. Exhaust, carbs, etc. were used from the R100RT and the coil, voltage regulator, wiring harness, etc. on the R65 were used. The only issues from the conversion are that the brake pedal on the R65 chassis hits the right side muffler. I'm not sure if I should get a custom brake pedal made or use the R65 pipes and have the headers made to fit. The R65 pipes may be too restrictive for the R100. 2nd issue is the tach doesn't work. I used the R65 tach and I don't know what it's looking for from the engine.

I do still have the R65 engine. Ran until I did the conversion. Needs Valve covers. Tranny and carbs need a rebuild.

[Semper Gumby]

Hey Where is FrankenBeemer from Chattanoga, TN?  Didn't he have one of these?  :-?

[Rob Valdez 79 R65]

I had never heard of a coil leaking oil before.  That would be very messy, indeed.  I had a power transformer on a real old electric typewriter (1950's?) start dripping black stuff when I used it, once.  I was young and stupid, and just threw it away!  

[Ed Miller]

My Lucas coils have screws which I believe are for filling with oil.  I don't know what kind of oil, as I've never had to add any.  If I have them off the bike I can hear it sloshing a tiny bit when I shake them, but they're too full to slosh much.

[Justin B.]

Yeah, a lot of old automotive coils were oil filled and you could hear them slosh when shook, never did have any with a drain plug, though...  "Gee, hon, I'd just love to go shopping with you tonight but I gotta, uh, umm, errr, change the oil in my coils!  Yeah, that's the ticket, changin' that ol' coil oil...  You wouldn't want me to break down half way to work tomorrow in the cold, would you?"  

But, maybe because LUCAS chose to do something like that is why I've never seen it before!  
Sounds like a plan, Ed!  

[Semper Gumby]

In the automotive world Lucas Electrics is known as the "Prince of Darkness".  

Up in Canada somewheres there is a party-club whose name has something to do with Lucas whoes motto I think is "Home before darK'.   Where did I see that...

[nhmaf]

Oh, you REALLY don't want the oil to come out of oil filled coils - it contains some nasty stuff
that is not in 'normal' motor oils.  Like electrolytic capacitors, the cases are usually designed
to "vent" .ie. leak out oil if they become overheated, otherwise there is the potential for them
to build up pressure and rupture explosively.   What would cause your coil to so severely overheat ?
Well, it could have had a defect/crack in it which caused an internal short, or perhaps it
was of the type which needed resistor caps and you didn't have them installed, or somehow
one of your plugs becamse shorted, temporarily.   Of all these, most likely it was a latent
internal defect.   Glad to hear that you didn't have any injuries and that you were able to quickly get yourself
back on the road !!!

[MrRiden]

My coil setup is totally different. It seems to match the coils shown on the parts microfiche but the mounts look like a bodge to me. Anyone else have this bosch setup?
rich