Speed Triple Died

Frst the non starting, Battery, Battery, Battery..
could be not charging,
or not enough power to start so ecu wont let it try.

Have you over looked side stand/ clutch /kill switch?

So could be battery dead ( broken, flat, past its sell by date ,expired ,used) which means it has some charge or no charge or wont charge. Is no longer fit for purpose which ever one it is.

Test the voltage under load (running should be over 13 volts
Test the voltage at rest ( switched off) should be over 12 volts
Drop test monitor when starting bike (google it)

Do you have a charger (motorcycle spec [charing to quick will fry the battery] 1 amp at a time ) Optimate or similar.

Charge and try again.

if its not that then may be rectifier ( monitors and reduces voltage)
if its not that then may be stator ( left side of engine, produces electric, ac current )

the cutting out could be
loose fuses ,tight loom being streched, connections ,ecu connections clutch,side stand switch connections

sounds like it had an interference in power for a second
check for corrosion at switches
also last kill switch.
heres a Thruxton with the same issues.

http://www.triumphrat.net/air-coole...hruxton-efi-died-suddenly-and-wont-start.html

 

Hi JRMurphy and welcome to the gang!
Sounds like a bad connection somewhere down the line, and yes, a loose battery terminal will do strange things.
There is another thread on the go at the moment about a Sprint (I think) with similar problems which some suggest may be a faulty reg/rec.
Just seen what Sprinter has said and agree with his suggestions.

 

Primarily, test the battery, if no good, renew, if bike runs, test charging voltage & let us know.If battery ok, check positive & earth cables for security, check engine earth. If all good then try spare key (unlikely). If no good then I would be looking at ignition switch signal. Following that I'm afraid you will need to get hold of someone with first hand experience & testing equipment, checking continuity feeds etc. Good luck.

 

Crank position sensor, immediate cut out, coils ,splutter dip, it could be many things.

What you have to do is move through the bike systematically, so you dont miss any clues, so first get it starting then, second, remember what happened.
Did you go over a bump
Was the bike hot ?
Were you turning ?
Were you changing gear ?