What is strongest manual transmission available in the market?
06-08-2016, 10:53 AM
#21
Drifting
Pfitzner offers conversion kits that you replace the internals with their gears and shafts. Other than the metallurgy, the parts are dimensionally comparable, so it makes me wonder how much more power they will handle, if any. I've got one on my bucket list for this last build of mine.
What I believe is the greatest contributor to failure at these power levels (other than the obvious) is the heat generated at the gear surfaces. These parts are hardened and tempered. If the surface temps exceed a certain threshold, the parts lose their strength. Pulling the longitudinal G's in higher powered cars pushes the fluid needed for cooling away from the places it's needed. Coupled with the force applied to the gears this is the recipe for the "runaway train" effect. I believe that the greatest thing you can do to help a 6060 take this kind of load and abuse is to not only use a large cooler, but get a good Tilton pump assembly like the one in the pic below and strategically place the return nozzle/s to spray the critical areas inside.
What I believe is the greatest contributor to failure at these power levels (other than the obvious) is the heat generated at the gear surfaces. These parts are hardened and tempered. If the surface temps exceed a certain threshold, the parts lose their strength. Pulling the longitudinal G's in higher powered cars pushes the fluid needed for cooling away from the places it's needed. Coupled with the force applied to the gears this is the recipe for the "runaway train" effect. I believe that the greatest thing you can do to help a 6060 take this kind of load and abuse is to not only use a large cooler, but get a good Tilton pump assembly like the one in the pic below and strategically place the return nozzle/s to spray the critical areas inside.
06-08-2016, 12:14 PM
#22
Team Owner
I'm running no cooler and zero issues. I do have it looped so it sprays on the gear set still but no actual cooler.
06-10-2016, 09:48 AM
#26
Race Director
Member Since: May 2004
Location: Raleigh, NC
Posts: 16,664
Received 1,193 Likes
on
1,052 Posts
St. Jude Donor '15
Good lawd
06-10-2016, 03:14 PM
#28
Drifting
Thread Starter
10-16-2016, 02:03 PM
#30
Drifting
Thread Starter
Got 2000 miles testing on street and airfield with prototype dog engagement transmission some pics above, total four times took it to table for some mods, example first version had OEM main shaft but had to replace to custom version we fabricated. Shifting takes 80 to 120ms depends of gear with shift cut and now it's time move to next level.. Sneak peek of billet case design.
The following users liked this post:
locosmith (10-27-2017)
10-16-2016, 10:01 PM
#34
Drifting
10-17-2016, 01:17 AM
#35
Drifting
Thread Starter
Until we are on that point, need more testing and few small mods, it's still prototype.
here's one more vid:
Last edited by Tuomas FIN; 10-17-2016 at 01:43 AM.
10-17-2016, 01:33 AM
#36
Drifting
Thread Starter
Here's vid of my final test pull on airfield, ended up little sadly 
I'm using shift cut at 1-4 gears but have been problems with 5th gear so shifted from 4th straight to 6th.
Got scared at 3th -->4th shift (went to limiter) so loosened throttle for a moment. Normally shifting happens WOT.
Now 5th problem solved, stupid small machining thing I didn't notice first.
I'm using shift cut at 1-4 gears but have been problems with 5th gear so shifted from 4th straight to 6th.
Got scared at 3th -->4th shift (went to limiter) so loosened throttle for a moment. Normally shifting happens WOT.
Now 5th problem solved, stupid small machining thing I didn't notice first.
Last edited by Tuomas FIN; 10-17-2016 at 01:36 AM.
10-17-2016, 03:55 PM
#40
Drifting
Thread Starter
