New TTS supercharger kit
Joined: Jun 2018
Posts: 2,116
Likes: 671
From: Connecticut :(
Surprised no one commented; this is pretty big news given the fact that new boost offerings have all but stagnated for this platform. I believe the only other new offering for the s2k is the Jackson Racing kit and no one really knows what's going on with that; but, at the same time, what's the point of dealing with the complexity of producing and mounting a traditional rotrex if there's reverse rotation now - maybe that sent JR back to the drawing board?
And hell yeah; the ability to mount a C38R is huge! I know it's been done before with other blowers, but I think the C38R will deffo and easily take most s2ks over 550whp and into 600 +++ whp supercharged territory, which used to be a mythical zone for supercharged s2ks. Hoping Richard and team at TTS design a very aesthetically pleasing mounting setup for it (I know he's just using a rudimentary steel plate for mockup); hopefully still a nice thick piece of CNC aluminum goodness, this time ideally incorporating some vibration isolators like SoS had done.
The only thing that kind of perplexes me is the fact that they're opting for a cog drive on this one, when in the past they were vehemently opposed citing durability and reliability issues (as evidenced by the high rate of KW kit failures and eventual redesign to a serpentine drive). Apparently the updated shaft design Rotrex is using seems to be the ticket for Richard to feel comfortable going to a toothed setup. I like his idea of simplicity but I'm still thinking only 2 brackets is a little light for mounting; especially if you move to the C38R. Anyways really excited to see where this goes! Kinda regretting my choice to go turbo now, lol.
And hell yeah; the ability to mount a C38R is huge! I know it's been done before with other blowers, but I think the C38R will deffo and easily take most s2ks over 550whp and into 600 +++ whp supercharged territory, which used to be a mythical zone for supercharged s2ks. Hoping Richard and team at TTS design a very aesthetically pleasing mounting setup for it (I know he's just using a rudimentary steel plate for mockup); hopefully still a nice thick piece of CNC aluminum goodness, this time ideally incorporating some vibration isolators like SoS had done.
The only thing that kind of perplexes me is the fact that they're opting for a cog drive on this one, when in the past they were vehemently opposed citing durability and reliability issues (as evidenced by the high rate of KW kit failures and eventual redesign to a serpentine drive). Apparently the updated shaft design Rotrex is using seems to be the ticket for Richard to feel comfortable going to a toothed setup. I like his idea of simplicity but I'm still thinking only 2 brackets is a little light for mounting; especially if you move to the C38R. Anyways really excited to see where this goes! Kinda regretting my choice to go turbo now, lol.
Last edited by Kyle; May 28, 2024 at 08:49 AM.
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Joined: Sep 2005
Posts: 1,941
Likes: 47
From: Baraboo, WI
Surprised no one commented; this is pretty big news given the fact that new boost offerings have all but stagnated for this platform. I believe the only other new offering for the s2k is the Jackson Racing kit and no one really knows what's going on with that; but, at the same time, what's the point of dealing with the complexity of producing and mounting a traditional rotrex if there's reverse rotation now - maybe that sent JR back to the drawing board?
And hell yeah; the ability to mount a C38R is huge! I know it's been done before with other blowers, but I think the C38R will deffo and easily take most s2ks over 550whp and into 600 +++ whp supercharged territory, which used to be a mythical zone for supercharged s2ks. Hoping Richard and team at TTS design a very aesthetically pleasing mounting setup for it (I know he's just using a rudimentary steel plate for mockup); hopefully still a nice thick piece of CNC aluminum goodness, this time ideally incorporating some vibration isolators like SoS had done.
The only thing that kind of perplexes me is the fact that they're opting for a cog drive on this one, when in the past they were vehemently opposed citing durability and reliability issues (as evidenced by the high rate of KW kit failures and eventual redesign to a serpentine drive). Apparently the updated shaft design Rotrex is using seems to be the ticket for Richard to feel comfortable going to a toothed setup. I like his idea of simplicity but I'm still thinking only 2 brackets is a little light for mounting; especially if you move to the C38R. Anyways really excited to see where this goes! Kinda regretting my choice to go turbo now, lol.
And hell yeah; the ability to mount a C38R is huge! I know it's been done before with other blowers, but I think the C38R will deffo and easily take most s2ks over 550whp and into 600 +++ whp supercharged territory, which used to be a mythical zone for supercharged s2ks. Hoping Richard and team at TTS design a very aesthetically pleasing mounting setup for it (I know he's just using a rudimentary steel plate for mockup); hopefully still a nice thick piece of CNC aluminum goodness, this time ideally incorporating some vibration isolators like SoS had done.
The only thing that kind of perplexes me is the fact that they're opting for a cog drive on this one, when in the past they were vehemently opposed citing durability and reliability issues (as evidenced by the high rate of KW kit failures and eventual redesign to a serpentine drive). Apparently the updated shaft design Rotrex is using seems to be the ticket for Richard to feel comfortable going to a toothed setup. I like his idea of simplicity but I'm still thinking only 2 brackets is a little light for mounting; especially if you move to the C38R. Anyways really excited to see where this goes! Kinda regretting my choice to go turbo now, lol.
Joined: Aug 2012
Posts: 8,755
Likes: 1,859
Reason cogged, I'm thinking the issue is a C38R ribbed belt needs more ribs than will fit at our crank pulley.
There just isn't enough belt contact surface even with a lot of belt wrap without going wider belt. But wider ribbed belt would interfere with steering rack.
Cogged won't slip. But I still think its a bad idea. Not something rotrex themselves support. I would seek other means to make whatever width ribbed belt fits work.
Special surface treatment to crank and sc pulley. Or maybe a really large crank pulley would clear rack ears, allowing wider belt (and proportionally larger sc pulley).
There just isn't enough belt contact surface even with a lot of belt wrap without going wider belt. But wider ribbed belt would interfere with steering rack.
Cogged won't slip. But I still think its a bad idea. Not something rotrex themselves support. I would seek other means to make whatever width ribbed belt fits work.
Special surface treatment to crank and sc pulley. Or maybe a really large crank pulley would clear rack ears, allowing wider belt (and proportionally larger sc pulley).
Last edited by Car Analogy; May 29, 2024 at 04:19 AM.
Joined: Jun 2018
Posts: 2,116
Likes: 671
From: Connecticut :(
Reason cogged, I'm thinking the issue is a C38R ribbed belt needs more ribs than will fit at our crank pulley.
There just isn't enough belt contact surface even with a lot of belt wrap without going wider belt. But wider ribbed belt would interfere with steering rack.
Cogged won't slip. But I still think its a bad idea. Not something rotrex themselves support. I would seek other means to make whatever width ribbed belt fits work.
Special surface treatment to crank and sc pulley. Or maybe a really large crank pulley would clear rack ears, allowing wider belt (and proportionally larger sc pulley).
There just isn't enough belt contact surface even with a lot of belt wrap without going wider belt. But wider ribbed belt would interfere with steering rack.
Cogged won't slip. But I still think its a bad idea. Not something rotrex themselves support. I would seek other means to make whatever width ribbed belt fits work.
Special surface treatment to crank and sc pulley. Or maybe a really large crank pulley would clear rack ears, allowing wider belt (and proportionally larger sc pulley).
Joined: Aug 2012
Posts: 8,755
Likes: 1,859
Yes, getting closer.
I'm working on a ribbed conversion kit for KW kit.
With a proper auto tensioner, proper belt wrap, and reinforced bracket mounts.
I've got most of the pieces to build a prototype.
Separately, also working on an option for w2a ic for kw kit, which could be used with or without my ribbed conv kit.
I've also mapped out ideas for an all new C38R ccw, very similar to what TTS just revealed they're working on. But mine would use a tensioned, ribbed belt. I'm just concerned widest possible belt we could fit wouldn't be enough. I know more research needed there, so haven't put as much energy into that. But as soon as TTS said cogged, I kinda figured that was why.
I kinda tipped my hat on ideas I had for working around the C38R ribbed belt width issue. Giving away my ideas knowing TTS could pick them up. They have way more resources to bring this to market than I do, and I'd rather them than something else lame from everyone that has tried to add anything to the Rotrex S2k party. TTS is only ones that seem to have any clue. Also realize they're smart enough to come with those same ideas I put out there.
I'm working on a ribbed conversion kit for KW kit.
With a proper auto tensioner, proper belt wrap, and reinforced bracket mounts.
I've got most of the pieces to build a prototype.
Separately, also working on an option for w2a ic for kw kit, which could be used with or without my ribbed conv kit.
I've also mapped out ideas for an all new C38R ccw, very similar to what TTS just revealed they're working on. But mine would use a tensioned, ribbed belt. I'm just concerned widest possible belt we could fit wouldn't be enough. I know more research needed there, so haven't put as much energy into that. But as soon as TTS said cogged, I kinda figured that was why.
I kinda tipped my hat on ideas I had for working around the C38R ribbed belt width issue. Giving away my ideas knowing TTS could pick them up. They have way more resources to bring this to market than I do, and I'd rather them than something else lame from everyone that has tried to add anything to the Rotrex S2k party. TTS is only ones that seem to have any clue. Also realize they're smart enough to come with those same ideas I put out there.
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Joined: Jun 2018
Posts: 2,116
Likes: 671
From: Connecticut :(
Joined: Jun 2008
Posts: 1,593
Likes: 75
What ever happened to the Greddy turbo setup? I vaguely heard Artec was going to help them or something. I offered to sell my design to Artec, but they declined. They didn't even ask for how much... oh well. The supplier I used, the last quote I got from them for qty 4 was ~$4500 each. That's casting, heat treatment, machining setup, and machining costs.