TroyBrock

Anyone ever heard of Duncan racing? I just bought a motor and the clutch cover has their name on it. Took it off and underneath is a Hinsen billet basket and pressure plate. Just trying to get some info on what I might have.

I'm not sitting on a high strung motor and probably won't ever be, I do alot of trail riding up and down hills and don't need neckbreaking power. I'm probably gonna sell these and if I do ever decided to get an aftermarket head I'll do something with normal domes.

It hasn't touched my motor yet and never will but you should see the dome on it from the last motor it touched, talk about pitting. Somehow nothing went down the sides of the piston, walls are clean as can be I'll post pictures in a few, gotta run outside quick

This is just a spare that I bought, it was cheap so I hopped on it. Once I build it I'll sell it. I might have a buyer right now so when it sells it sells, doesn't matter me.

Yeah I'm gonna sell it and buy a better one eventually.

Can be deleted. Please delete for my sake.

I know I know, trinity bad word. Just double checking.

Just bought a motor in pieces that came with a trinity stage IV head, it is any good or should I try to get rid of it?

I just came across this and boy am I glad to see a shop like this in the 518. I'm looking forward to taking a trip up to your shop sometime soon! Do you take questions through pm?

This is how the coil wires go right? orange to the front and ground to the back? I don't any a CDI I can borrow :/

Well that's a bummer, must have been me pulling on the wires that did it in.

Yes, that ohmed back right also. The gap is set right also, about a business card away. I tried moving it closer and farther with no change.

I don't have access to an oscilloscope but I'm almost 100% positive it's the CDI I checked - killswitch - grounded the key switch to rule that out - coil ohms .38 between "-" and "+" and 16k between the 2 caps - stator resistance is I'm check - wire harness has continuity

No problems with continuity, the black grounds and the black/white does not Am I just sitting on a dead CDI?

I haven't had any problems with my trail tech vapor.

Okay I will check the CDI wires. None of my wires in the harness are hanging by a thread, I unwrapped and followed each one careful. Black wire coming from the CDI should ground, but the black/white wire should not? Where should I test them?

That kinda sounds like a jetting issue not a electrical issue. What green/yellow wire are you talking about? Have you disconnected the TORS box?

But my buddies stock coil tested at 15,500 ohms plug to plug and his works so is the extra 500 ohms really causing the issue? I tested plug cap to plug cap, I wasn't getting a reading from cap to "-" or "+", should I be?

I think I have it narrowed down to the coil or the CDI, and the coil from "-" to "+" ohmed at .38 and the resistance between the 2 caps was around 16,000.Those are reasonable values aren't they? I replaced my plug caps with NGK in September when I bought the bike because the original ones were shot. The stator is making power, I have a trail tech vapor and when I kick it over it turns it on which means there is power in my system. If it's the CDI I don't understand why it would all of the sudden fail, I didn't pull on the wires at all.

Hello everyone. The other day I was wrapping my connections to try to make everything alittle more waterproof. I wrapped the CDI connections with no problem. But when I wrapped the stator connection it ran fine but if I moved it at all it died, I shut it off to figure out the problem and have had no spark since. I ohmed everything and even took the wire harness out to check all my connections everything is within specifications. I have no idea where to go from here. Things I check: Continuity on wire harness Pickup Stator Coil Killswitch It seems to me that I'm not getting any power but I don't know, if anyone has any suggestions please let me know.

Just ruling it out, I checked the connections I was messing with and nothing was pulled or broken. I'm gonna go through it today and if I can't figure it out I'll start a thread in the appropriate place.

This fucking machine though, I started wrapping the connectors to water proof it and now it doesn't have spark. Trying another CDI when I get home, I just can't catch a break with this thing.

Ehh shit happens.

I would drain all fluids and replace them, New plugs, clean carbs, check jetting, leakdown test, could do a compression test also. After 3 years the pistons walls might have some surface rust so possibly put a dab of your premix in the plug holes and work it in before trying to start it. I'm sure someone with more experience will chime in soon.