I'd love t see a photo and whatever @GhassanAutomotive and @Chris@VargasTurboTech folks determine.
The difficulty with this situation is that a traditional solution is a keyway. That solution is well known - no amount of R&D and testing will supplant the 50+ years of experience running that solution with high horsepower motors. Period. But that said, one can get that solution ... and the cost in the case of our cars, that solution is fairly expensive.
The VTT spline lock is an alternative approach, at far less cost, which can be installed without having the motor apart, etc. It can't be as bulletproof as a keyway solution - obvious to anyone that thinks about it for 50 milliseconds - simply because ... until the spline lock has trek'd the kind of years and abuse stats that the key has ... just can't say with the same level of certainty - and this is a conversation about certainty (failure rates), nothing else. I think the practical question at this point is, as a choice between doing nothing and spending $$$ on a key solution (someone chime in and say how much it costs to get a key solution on an existing built motor) ... is the spline lock a worthwhile consideration? Probably not as bulletproof as a key, I surmise, but this is a trade-offs issue. That seems like the practical place to land - and it would be interesting to see what happened in the Ghassan case.
Filippo
The difficulty with this situation is that a traditional solution is a keyway. That solution is well known - no amount of R&D and testing will supplant the 50+ years of experience running that solution with high horsepower motors. Period. But that said, one can get that solution ... and the cost in the case of our cars, that solution is fairly expensive.
The VTT spline lock is an alternative approach, at far less cost, which can be installed without having the motor apart, etc. It can't be as bulletproof as a keyway solution - obvious to anyone that thinks about it for 50 milliseconds - simply because ... until the spline lock has trek'd the kind of years and abuse stats that the key has ... just can't say with the same level of certainty - and this is a conversation about certainty (failure rates), nothing else. I think the practical question at this point is, as a choice between doing nothing and spending $$$ on a key solution (someone chime in and say how much it costs to get a key solution on an existing built motor) ... is the spline lock a worthwhile consideration? Probably not as bulletproof as a key, I surmise, but this is a trade-offs issue. That seems like the practical place to land - and it would be interesting to see what happened in the Ghassan case.
Filippo
