LateModel21's Belt Wrap Kit - Installed
Re: LateModel21's Belt Wrap Kit - Installed
By going from a 74mm to a 61mm pulley (for example) you increase the load required by the supercharger from 38kW to 62kW or +60%.
see pic showing the 2 routes....black is stock...green is with "BWK" Belt wrap kit.
You can see if you didnt employ the BWK - you'd have <180deg lap (stock) and lose contact area, but the charger is "requesting more power" (or providing a greater resistance) and so you have a greater propensity to slip
With the BWK discussed here, you increase this to >210deg (give or take) and get better contact area.
Chris - have you (or others) looked into increasing the tension any - say +10 or 15%.
Do we have any tension figures floating around out there?
see pic showing the 2 routes....black is stock...green is with "BWK" Belt wrap kit.
You can see if you didnt employ the BWK - you'd have <180deg lap (stock) and lose contact area, but the charger is "requesting more power" (or providing a greater resistance) and so you have a greater propensity to slip
With the BWK discussed here, you increase this to >210deg (give or take) and get better contact area.
Chris - have you (or others) looked into increasing the tension any - say +10 or 15%.
Do we have any tension figures floating around out there?
Last edited by Billy22Bob; 04-15-2013 at 10:57 AM.
Re: LateModel21's Belt Wrap Kit - Installed
Originally Posted by Billy22Bob;734929
Chris - have you ([I
Chris - have you ([I
or others[/I]) looked into increasing the tension any - say +10 or 15%.
Do we have any tension figures floating around out there?
Do we have any tension figures floating around out there?
Cheers,
Chris
Re: LateModel21's Belt Wrap Kit - Installed
Not that it was really required, but since some have asked about it, I added an optional bracket to put the two 76mm pulleys (smooth pulley and the new grooved one) in double-shear mounting. I also added a new bearing cover for the 90mm pulley on the tensioner.
Cheers,
Chris
IMG_20130422_200613_843.jpg
Cheers,
Chris
IMG_20130422_200613_843.jpg
Last edited by latemodel21; 05-07-2013 at 12:27 AM.
Re: LateModel21's Belt Wrap Kit - Installed
Not that it was really required, but since some have asked about it, I added an optional bracket to put the two 76mm pulleys (smooth pulley and the new grooved one) in double-shear mounting. I also added a new bearing cover for the 90mm pulley on the tensioner.
Cheers,
Chris
Attachment 28174
Cheers,
Chris
Attachment 28174
Nice! No, it's...
Last edited by grip grip; 04-23-2013 at 07:47 AM.
Re: LateModel21's Belt Wrap Kit - Installed
... I would recommend silver brake caliper paint DOC : )
Re: LateModel21's Belt Wrap Kit - Installed
I've only purchased the alternator pulley from Chris, and am completely happy w/ Rob's kit. Just wanted to mention that it is the American way to pursue building the better mouse trap. Or at least one w/ more bling. Kudos to Rob and Chris, and all here that strive for excellence.
Re: LateModel21's Belt Wrap Kit - Installed
credit to all - beautiful things those pulleys, cant wait to get into that side of things.....shame we cant ditch the radiator and show 'em off better...
totally off topic and unrelated.....but someone said a funny thing to me sometime ago....
....A good "rat catcher" always leaves 2 behind....
totally off topic and unrelated.....but someone said a funny thing to me sometime ago....
....A good "rat catcher" always leaves 2 behind....
Re: LateModel21's Belt Wrap Kit - Installed
lol. All in fun. No I want chrome.
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Re: LateModel21's Belt Wrap Kit - Installed
It also seems you've built quite the good reputation as well. I know dozens of people that are happy with your products, and I plan on being a customer of yours in the future.
And THAT'S what this place is all about. Enthusiasts serving other enthusiasts through innovation and mutual respect for each other.
Can't find that on just any forum.
Keep up the good work, guys.
Re: LateModel21's Belt Wrap Kit - Installed
I received the bracket and grooved idler today. Nice!
85160a91-6b16-4de1-86e7-610ba704a178_zps44ef9918.jpg
85160a91-6b16-4de1-86e7-610ba704a178_zps44ef9918.jpg
Re: LateModel21's Belt Wrap Kit - Installed
I received mine in the mail yesterday. I am waiting for a few other perf parts to come in and these bad boys will be installed.
DSC04610-s_zpsc96eb05e.jpg
DSC04610-s_zpsc96eb05e.jpg