Custom/Hybrid MSD no spark :(

[hink320]

I rode my Footrocket today for the second time and everything was going great until about 20 minutes into it. I was just cruising on a plane and it shut off like I hit the kill switch and wouldn't start again. I determined there's no spark, so I pulled the Ebox and checked all my grounds and they all seem good, I have power to the brain too. This is a brand new total loss system, has about 30 minutes of ride time on it. Where do I start?

 

[Matt_E]

Disconnect the triggers and short each of them at the brain plug. You should get spark. If you do, your triggers are bad (very unlikely, especially for both of them)
If you don't, it could be the coils (again, extremely unlikely unless a common ground is bad) or more likely, the brain.

 

[hink320]

Can I just unplug the deutsch connector and stick a piece of wire inside the plug to both wires from the trigger to short them?

 

[Matt_E]

That's what I mean

 

[hink320]

Awesome, thanks Matt, I'll check that in the morning.

 

[hink320]

I did what you said and I have spark at both cylinders, how do I check the coils/brain?

Thanks

 

[Matt_E]

If you get spark like that, your coils and brain are fine.
Something is up with the triggers. They may be shimmed improperly or perhaps the wiring got shredded by something in the flywheel area.

 

[hink320]

Took off the flywheel cover and I see metal shavings in there= not a good sign.
I need to go buy a flywheel puller now. Should I position the flywheel at any specific point before I pull it to make it easier on myself? Or just pull it and make sure I reinstall it the exact same?

 

[Matt_E]

Just pull it. The Woodruff key on the crank snout takes care of alignment.
I'd say wires from the pickups got shredded. Probably a bendix problem.

 

[Philip Clemmons]

Did you use clay and measure the flywheel to pickup clearance? They may have been too close and rubbed. Let us know what you find.

 

[XJCrawler]

Did you use clay and measure the flywheel to pickup clearance? They may have been too close and rubbed. Let us know what you find.

Tricky setup his total loss

 

[Matt_E]

The metal chunks indicate something came apart, and after it was running fine already. I think the clearance was fine.

 

[XJCrawler]

Cant see the picture on my phone, but hopefully it just lost the magnet off the flywheel

 

[hink320]

Haven't pulled it yet, but the metal filings are definitely magnetized so it looks like it's just the magnet. Where do I go about finding a new magnet?

 

[XJCrawler]

Blowsion carry's them, the same thing happened to chris' matrix last summer

 

[Philip Clemmons]

That's probably best case (magnet). I've seen them (pickups) hit and still run, but failure comes shortly thereafter. I know Tricky did it right

 

[hink320]

It was the magnet, there are only remnants of it left and everything else is good. Tricky is sending me a new magnet. Thanks for the help Matt and everyone else.

 

[XJCrawler]

Make sure your bendix is cleaned out, when it happened to Chris the bits of magnet jammed up his bendix and it failed 5 minutes after we got it back on the water

 

[hink320]

Just my luck that it took out two teeth on my brand new bendix.

 

[Pablo]

I would file those damaged teeth as best u can and soak that bendix real well in some oil...go over it real well and save it as a backup.