What happened: Last job I've done on the bike was a Stator and R/R replacement. Replaced my speedcell battery with a new after the stator and rr swap. I've been riding for about 2 weeks since then and everything was running perfect condition. Brought her in for the night like usual and went to sleep, then woke up the next morning and brought the bike out for another nice ride. Crunk her up no problem to warm her up then about half way through warming up the engine stalled and would not crank again.

Here is a video of two crank attempts just seems to be doing everything except firing up (sounds like its farting air)


It can't be the battery due to the fact that its brand new (and been testing 3 times now)
Sparks plugs are all good

My suspicion at this point is the fuel pump but its priming with no weird sounds. Maybe fuel is clogged somewhere???

 

Simulated your start with my RR5. I recorded it on my iPhone.
My bike seems to have a longer and stronger prime. I’m not sure if it’s just the audio quality from the clip that’s separating the two but after watching the two there is a difference.
The turn over doesn’t sound that encouraging and there’s a few things I’d check initially. I understand you have installed a new battery but I would hook a multimeter up to it and record the values before and during your start up attempts. If I got poor results during this I would try and jump it from a good source.
i agree with you that you could have a fuelling issue and after the battery has been proved, time to investigate maybe that next.
Best of luck mate