New E55 Supercharger power pulley/clutch!




The Best of Mercedes & AMG
This is how a "prototype build" thread is supposed to look!!
..... announce a product idea, then follow it up with some specs..... then show a photo of the product..... then give more specs and release the product a few weeks later so people can actually BUY it!!! So, with your explanation above where:
Stock lower pulley 155mm + new SC pulley = 170mm lower pulley + stock 90mm SC pulley
Am I correct to calculate that the new design is 82mm??
And for extra credit:
If those two combinations give identical SC RPMs through the rev range, will they have identical IATs also? Or will the advantage of the smaller SC pulley (both in diameter and rotating mass) allow for cooler air by putting less drag on the motor???
Awesome. Simply Awesome.
-G
Last edited by GregMB; Dec 2, 2011 at 02:32 PM. Reason: formatting
This is how a "prototype build" thread is supposed to look!!
..... announce a product idea, then follow it up with some specs..... then show a photo of the product..... then give more specs and release the product a few weeks later so people can actually BUY it!!! So, with your explanation above where:
Stock lower pulley 155mm + new SC pulley = 170mm lower pulley + stock 90mm SC pulley
Am I correct to calculate that the new design is 82mm??
And for extra credit:
If those two combinations give identical SC RPMs through the rev range, will they have identical IATs also? Or will the advantage of the smaller SC pulley (both in diameter and rotating mass) allow for cooler air by putting less drag on the motor???
Awesome. Simply Awesome.
-G
BTT in the hopes of a "Friday Update"???!!!

-G
Update S/C pulley has been fit tested , inspected and is in testing as Shardul said. All is good there. Weight has been reduced a full ONE pound! Again, this SC pulley will be like adding 12-14 mm to your crank pulley. Just sayin.

Holiday`s, things slow down as we all know but still pushing testing and making sure everything is great. S/C pulley is going on my car too and can`t wait.
As many of you have seen, the stock factory SC pulley can have spring breakage (the small flat plates between pulley and clutch plate), So we have been playing around with this small part to get the right rockwall hardness for best durability and function. Want to improve upon the factory quality and not just rush something out , because we all want it TODAY.
Laser Cutting a few more spring samples out this week to test spring rate and rockwall hardness for production.

E63 Biturbo, UPD Cold Air induction kit, UPD performance crank pulley and UPD adjustable rear suspension with ride height adjustment.
CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.
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Update S/C pulley has been fit tested , inspected and is in testing as Shardul said. All is good there. Weight has been reduced a full ONE pound! Again, this SC pulley will be like adding 12-14 mm to your crank pulley. Just sayin.

Holiday`s, things slow down as we all know but still pushing testing and making sure everything is great. S/C pulley is going on my car too and can`t wait.
As many of you have seen, the stock factory SC pulley can have spring breakage (the small flat plates between pulley and clutch plate), So we have been playing around with this small part to get the right rockwall hardness for best durability and function. Want to improve upon the factory quality and not just rush something out , because we all want it TODAY.
Laser Cutting a few more spring samples out this week to test spring rate and rockwall hardness for production.I wouldn't expect to learn much about the new projects from the "Houston Crew" on this site anymore. Way too much moderator involvement, deletion of posts and infraction points being dolled out these days.
My guess is that they'll just keep providing the "tech" on the other forums and people who feel like seeing cool new product development will need to spend more time over there instead.
-G
I wouldn't expect to learn much about the new projects from the "Houston Crew" on this site anymore. Way too much moderator involvement, deletion of posts and infraction points being dolled out these days.
My guess is that they'll just keep providing the "tech" on the other forums and people who feel like seeing cool new product development will need to spend more time over there instead.
-G



