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Subject ok kenny
     
Posted by maglito on April 26, 2006 at 11:26 AM
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In Reply To Re: Very interesting - I like it posted by Kenny on April 25, 2006 at 11:36 PM
     
Message I think those ratios look really neat, with those ratios I would be lest tempted to shift into 2nd when breaking into slower turns at the road course. Using 3rd to power out of turns and being able to stay in that gear a bit longer and then using 4th for most of the rest (obviously using 5th on the longer straights).

That's a lot of shifting.

Not any more (possibly more OR possibly less depending). I'm sure you can figure it out, but I'll attempt to explain anyway. On a road course I am in 3rd most of the time, shifting to 4th often right before turns (running out of gear), and shifting to 2nd while braking in to slower turns. I am usually only using the "top" of second and the bottom of 4th (except on some front/back straights when I get to use most of 4th -depends on track, obviously-). With this transmission I doubt I would need to use gear 2 at all anymore (except perhaps on REALLY slow turns). So, I would end up using most - all of gear 3 when coming out of the slower turns, all of gear 4 and shifting into gear 5 very rarely. The only time I would be shifting "extra" would be where I had an extremely slow corner(2) FOLLOWED BY an extremely fast straight(5). Otherwise, I am likely to shift LESS, (using only gears 3 and 4 for most of the track) or the SAME AMOUNT with much more useable power (on the occasions where I would use either 2-rare / 5-on really fast straights). The trade for that is more completely using the now 2 gears I would usually use on the road course (3 and 4 in this case) rather than all of 3, and part of 2 and part of 4. So, no its not necessarily "alot of shifting" - not at all.

My questions are is it REALLY stronger (any type of gaurentee against breaking?) how much does it weigh, how close are dimensions (exhaust interference), and is it any less efficient (drivetrain losses)?

Have you ever seen an empirical efficiency datapoint constant for any transmission, ever?

No, but does it hurt to ask how it would relate to others popular options? Did I ask for an empirical efficiency datapoint constant? I would bet the guys who engineer and manufacture this thing have an idea about how efficient it is compared to other popular transmissions like the T56.

otherwise the plan is used Jspec transmissions and replace as they go. Not much fun...

How exactly do you plan on blowing up multiple J-Spec transmissions?

By used j-spec transmissions, I simply meant used. Our stock transmissions have been known to break on the high end of the horsepower range that our cars are capable of making. Just because you have no plans to be on that end of the range, doesn't mean we all share that desire.

Why is it you and Spee like to hate first and think later? You can figure all this out yourself kenny.



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