I recently picked this up for use on my VVRC 40 twin. Works great. Plugs directly into the tach output on the RCexl ignition and is supposedly optically separated. One item to note, during fast spool ups, the unit can't keep up and you get an erratic rpm reading, much higher than actual (325,000 in one case). It does settle right back down and keep perfect pace with the on-board digital tach.
http://www.spektrumrc.com/Products/Default.aspx?ProdID=EVOA107
No joy on the linkee , discontinued product. Couldnt even find one on ebay. Bought one from source called " new egg" never heard of em and hope its not a fake site, seems legit, but every buy now button on 3 pages of rc links took me to horizon which says.. el discontinued. Wondering why and if new version is being released.
New Egg is totally legit. Us computer nerds love he place.No joy on the linkee , discontinued product. Couldnt even find one on ebay. Bought one from source called " new egg" never heard of em and hope its not a fake site, seems legit, but every buy now button on 3 pages of rc links took me to horizon which says.. el discontinued. Wondering why and if new version is being released.