For Offroad club racing the Axe Sport motor is excellent value for performance and is a 7 port.
It has enough grunt to run a truggy well.
Mike very bad luck with you experience.
To date all Cobra's i have sold and have seen have been running great and no failures.
Only issues we had initially was with teh first versions 3 needle carb which was changed and corrected.
The Mamba and Sport have also had no issues.
The onroad motors need some tlc though.
I think most manufacturers go through some bad batches and some shops might have stock from the first batches too.
Ive seen RB C6's with crank rub a very common problem, TOP motors from Nova breaking crank pins, JP motors throwing rods and having bearing failures , Sirio motors snapping cranks and porous crank cases, etc.
Just this past Sunday a club member had a crank break on his OS Speed.
All manufacturers have some crap sooner than later and teh public is a resource for R&D unfortunately.
Have to agree Nova are the bench mark for quality and performance though and is practically a household name in RC.
casterracing EX-1 Pro, SP Silver Arrow
TOP Racing Scythe, SP 17.5, SP GT Pro 2.0
TOP Racing Scythe, SP 4.5 V2, Hobbywing Xerun 120SD 2.0
TOP Racing Scythe, SP 13.5, Hobbywing Xerun 120SD 2.0