RJ MFG Supercharger kit Feeler...

Senna-F1

Why are they making their own pulleys, because when I read about cog and whipple it's usually someone looking for anyone who has done it, followed by replies about it being a bad idea for a street car. And talk about noise! A cogged whipple is anything BUT quiet.

bullitt5897

There are several reasons why they are going cog:

1. Simpler pulley setup
2. If you break a supercharger belt you only break the supercharger belt not the serpentine belt. Meaning you can limp the car to get a new belt or off the road.
3. Better grip than a 6 rib
4. Scalability!
5. Cost savings

Why are they making their own pulleys?

Well they are making them for this specific application. Why is it an issue? It's not that loud and it's perfectly fine for street driving.

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TopgunZ

Pretty sure he meant "why not go with a ribbed belt?" every reason you gave can be done with a ribbed belt also, which are less noisy.

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Staples

Only issue I have with them making an in house cog pulley is that if anything with the company goes south and you need replacement parts, you could very well be SOL. Very much similar to the GTM supercharger kit. They use a proprietary belt for their kit. Of course you could have one made, but it would be a pain in the @$$.

Like I said, I'm excited for them to come out with something new, these cars lack torque in the lower end. I'm just curious how far it's needed to go in order to get that whipple to fit.

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RJ MFG

Unlike other companies we are focused on organic growth. We also do private label and machine work for other companies and industries. We aren't going anywhere anytime soon. In fact we are moving to a new facility and will be having a grand opening party after zdayz. We will have a full line of pulleys available and in stock. We are using a standard size gates belt and if you felt the need to go 6 rib or 8 rib the only thing needed would be a new lower pulley made. Everything else could be gotten off the shelf.

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