HV to MM and still ended in disaster

[SV6000]

Doug what was your HV setup??? What problems were you having with that??
And speedys fail all the time, my G3R went through 6 speedys, 3 MMMs 2 MGMs and one quark. At least with castle you can send it off and get warranty or replacement fairly easy. When i sent the MGMs off to get repaired the turn around was about 3 months. And it still failed when i got it back. Try and gear for 40mph as a standard and work from there. My advice to you would be to invest (if you have not already) In an eagle tree system and that way you can see exactly what is happening. Electrics are funny things