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Ah yes...
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10,964 Posts
Discussion Starter #1 (Edited)
Alright, I know many of the SDS owners will have the same issue. BELT SLIP! It has been a known demon with the SDS system for the last few years the system has been out. Nothing really fixed it. Like the RIPP tensioner system, which does not really work as well as they state it does.

So I am working with Reichard racing to develop new pulley's for the SDS system. I am first going to develop the smaller pulley that RIPP makes or the Stage 2 pulley size. Then go on and develop the stage 1 pulley. Both will be available in the Ultra Grip configuration.

Images thanks to Reichard Racing. (These are just example pulley's)







HOW THEY WORK
Slits and holes provide extra traction for the belt. They allow the air that gets trapped under the belt to escape, thus preventing a cushion of air from building under the belt, which causes the belt to lift away from the pulley and slip. As well as the slits provide some extra "bite" for the belt to grab into.

Some Information:

Pricing: Should be less than $160 per pulley.
Fully Balanced
Aluminum Body 6061-T
Pro's- Eliminate most belt slip issues.
Con's- Will lower the lifetime of belt, expect no more than 20k per belt.
Time frame: Expect somewhere Mid-Summer or earlier.


Request: If anyone is willing to send me their Stage 1 pulley for R&D purposes, I will supply them with a FREE Stage 2 Pulley (Reichard Ultra Grip) one. Plus the return of the Stage 1 pulley to original owner.

Right now the pulley is being developed once I get the first one in I will test it and see the difference on the system and monitor belt slip via datalogging. If these work as promised, I will need some volunteers to test the new pulley's and provide me pre and post data. Set of 2-3 volunteers will be needed, pulley's will be 50% off to them.

Volunteer List:
1. ahspimp023
2. sroufe7
3.

Stay tuned. I will do my best to bring them in at a low cost.

RIPP PULLEY SIZING INFO
Bigger Shaft Pulley / Stock Crank Pulley = Stage 1 (5-7psi)
Small Shaft Pulley / Stock Crank Pulley = Stage 2 (9-11psi)
Bigger Shaft Pulley + Overdrive Aluminum Crank Pulley = Stage 2.5 (12-14psi)
Small Shaft Pulley + Overdrive Aluminum Crank Pulley = Stage 3 (16-18psi)
Small Shaft Pulley + Unorthodox Overdrive Aluminum Crank Pulley = Stage 3.5 (21psi)
 

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Ah yes...
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10,964 Posts
Discussion Starter #4
I also have the Stage I pulley that you were interested in awhile back that ill send you in the trade deal.
Well I would need it before you would get a Stage 2 pulley. So we can get both sizes done hopefully at the same time. Either way you would get one free, if you send me in the stage 1 for R&D.
 

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Banned
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Ok PM me your address and ill get it in the mail ASAP. My new SDS (Rebuilt) in on its way to my house, for now im going to just keep the Stage II (Small) Shaft Pulley, wait to receive the Ultra Grip Pulley then see how your results come out!
 

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Ah yes...
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10,964 Posts
Discussion Starter #6
Ok PM me your address and ill get it in the mail ASAP. My new SDS (Rebuilt) in on its way to my house, for now im going to just keep the Stage II (Small) Shaft Pulley, wait to receive the Ultra Grip Pulley then see how your results come out!
PM sent. Thanks.

Need two more volunteers. :yesway:
 

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"Suck my unit"
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Are there going to be any tests to show how long a belt will actually be useable with the pulley? (Basically anything to confirm the 20K miles you stated)
 

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Ah yes...
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Discussion Starter #8
Are there going to be any tests to show how long a belt will actually be useable with the pulley? (Basically anything to confirm the 20K miles you stated)
Well this is where I need volunteers with daily drivers for. My car is mostly a track car, and I make at most 2-3k per season on it. So I need someone who is willing to test the pulley and see how they hold up past a certain amount of miles.

However, alot of it goes with belts that peoples cars are not aligned properly and will eat through belts no matter what pulley. And the people that get belt slip replace the belts more often anyways due to them getting bald and used up or snapping.

So overall, the only way to back up my statement would be do testing on them. Most cars will run 60k miles before having to change the belt. However when adding a supercharger the life of those belts goes down to about 30k. So if we even got 12-15k out of each belt would be pretty decent. Considering its about $18-30 per belt.
 

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Ah yes...
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Discussion Starter #10
I'll test a stage 2 pulley.

I can also supply Dayco belts pretty cheap if you can get me a part number of what you use.

I use a different belt since I have the SDS on a 1 Gen Sebring. :ndance:
Yes this will be kind of a trial and error. To find the right belt size with these, it shouldn't change since the diameter will be the same as the RIPP ones, not to change the way these cars build boost.

I anything I am sure I can always find something smaller, if you want to build boost really fast. But the size of the the small pulley about 2.65" is plenty fine to build 22psi with the RIPP overdrive pulley.

So I will keep these the same size, unless you will want something custom ordered.

As far as belts. I think its best for everyone to measure it themselves. Best way to do is to use thicker wire (16-18 gauge) something that does not stretch easily. THen run it around the pulley's then use a tape measure and find out what you need more or less.

I will add you to the testers. I need one more person who is willing to help out the Club3G community.
 

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SS Powder Coating
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386 Posts
Yes this will be kind of a trial and error. To find the right belt size with these, it shouldn't change since the diameter will be the same as the RIPP ones, not to change the way these cars build boost.

I anything I am sure I can always find something smaller, if you want to build boost really fast. But the size of the the small pulley about 2.65" is plenty fine to build 22psi with the RIPP overdrive pulley.

So I will keep these the same size, unless you will want something custom ordered.

As far as belts. I think its best for everyone to measure it themselves. Best way to do is to use thicker wire (16-18 gauge) something that does not stretch easily. THen run it around the pulley's then use a tape measure and find out what you need more or less.

I will add you to the testers. I need one more person who is willing to help out the Club3G community.
I was just saying if people need new belts or want to put on new belts when they put on the new pulley.

I run a different size belt than the 3G cars do. I've got a custom made crank pulley and my belt configuration is different than the 3G cars.
 

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Ah yes...
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Discussion Starter #12
I was just saying if people need new belts or want to put on new belts when they put on the new pulley.

I run a different size belt than the 3G cars do. I've got a custom made crank pulley and my belt configuration is different than the 3G cars.
Yes I understand what you are saying.

The testers have to put on new belts. Since I want to see how long belts last on average and if you get any belt slip. More will included once I ship the pulley's out. Including a small survey to get filled out by the testers. I will try my best to backup these products and give the most real data.

There has to be something to fix the belt slip. Every SDS owner knows that when they but on the new belt. They get no belt slip, let them drive a bit and the slipping starts again. I hope that the new pulley will eliminate all the issues, and if not I will work on engineering the pulley for the SDS.
 

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Ah yes...
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10,964 Posts
Discussion Starter #15
We could almost use a COG belt but the damn AC compressor pulley is the issue. If you want to go without AC the COG route is available.
Well I don't have the A/C anymore nor the RIPP idler pulley. I just run the crank, alternator, blower, and tensioner (OEM). Pretty much it. I think just getting a cog system built would be a large expense and you would have to employ a company that builds these and does all the calculations for size of the cogs. It is all pretty iffy and would take alot of research and a company willing to build one.
 

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Ah yes...
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Discussion Starter #17
New info regarding these in case you wonder what this belt does.

Slits and holes provide extra traction for the belt. They allow the air that gets trapped under the belt to escape, thus preventing a cushion of air from building under the belt, which causes the belt to lift away from the pulley and slip.
 
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