A Cog setup's draw backs
Thread Starter
Joined: Aug 2002
Posts: 10,331
Likes: 1
From: San Antonio, TX
BOS, If you dont mind me asking how much were the 8 rib pulleys youo bought from ASP?? I believe i am only seeing a liitle bit of slip up top, and an 8 rib might be what i needed after all. Later down the road i am wanting to run 15 psi and i still dont think that can be done on a 6 or 8 rib belt. So the cog set up looks better and better each day. Someone needs to let us know how theres works as soon as they can.
Kyle
Kyle
Thread Starter
Joined: Aug 2002
Posts: 10,331
Likes: 1
From: San Antonio, TX
That is about the same prices as now for a MMS 7.850 crank pulley and that price for the blower pulley is the same as ATI. Does the Reichard racings blower pulley grip that much better?? What size is the ASP crank pulley?? 7.850 or smaller??? or same?? Thanks,
Kyle
Kyle
Here is the email I got back from rpmoutlet. Looks like my order is being placed now I will be getting the red anodized set.
email:It is a gates poly cog belt, who ever distributes the gates line should be able to supply you with the belt.
Ship time is 3 to 4 weeks from date of special order.
George Pastran
Tech Support--
RPM Outlet Inc. (www.rpmoutlet.com <http://www.rpmoutlet.com> )
13313 Redfish Lane
Stafford, Tx 77477
Tech: 281-261-6244, Fax:281-261-9031
Maybe if we all purchase at the same time it won't take 3-4 weeks to get them produced.
On a side note. I talked to my dyno guy about running a cog on the street and he said the problems are with manual cars(M6's) and downshifting. Since cogs don't slip this shocks the headunit real hard. But automatics will be less prone to this since they don't downshift like an M6 will. He made a good point that with the tension levels that we run to limit slip that the bearings in the supercharger will be toast in no time flat, and the front main bearings will suffer a similar fate. With the cog you don't need to run that type of tension. With all the high HP cars that come out of his shop I will believe what he says, so he said order it up, and so I will, I am tired of messing with this set up.
J
email:It is a gates poly cog belt, who ever distributes the gates line should be able to supply you with the belt.
Ship time is 3 to 4 weeks from date of special order.
George Pastran
Tech Support--
RPM Outlet Inc. (www.rpmoutlet.com <http://www.rpmoutlet.com> )
13313 Redfish Lane
Stafford, Tx 77477
Tech: 281-261-6244, Fax:281-261-9031
Maybe if we all purchase at the same time it won't take 3-4 weeks to get them produced.
On a side note. I talked to my dyno guy about running a cog on the street and he said the problems are with manual cars(M6's) and downshifting. Since cogs don't slip this shocks the headunit real hard. But automatics will be less prone to this since they don't downshift like an M6 will. He made a good point that with the tension levels that we run to limit slip that the bearings in the supercharger will be toast in no time flat, and the front main bearings will suffer a similar fate. With the cog you don't need to run that type of tension. With all the high HP cars that come out of his shop I will believe what he says, so he said order it up, and so I will, I am tired of messing with this set up.
J
Thread Starter
Joined: Aug 2002
Posts: 10,331
Likes: 1
From: San Antonio, TX
That looks good to me and ill be ordering it as soon as fundage lets me. What size pulleys did you go with frcefed98 and how much boost are you wanting to see??
Thanks
Kyle
Thanks
Kyle
TECH Senior Member
Joined: Nov 2001
Posts: 11,603
Likes: 0
From: Chi-Town, IL
Are they any pics of this "COG" setup...
I went out and bought a Dayco 8 rib POLYCOG belt, thats what they call it, and it has grooves cut into it going both ways, I guess for better grip.....maybe the reichard pulley I got will grab, but yea I think I'm gonna ease up on the tension, cause I broke pins that hold on my 7.85" 8 rib crank pulley...
I went out and bought a Dayco 8 rib POLYCOG belt, thats what they call it, and it has grooves cut into it going both ways, I guess for better grip.....maybe the reichard pulley I got will grab, but yea I think I'm gonna ease up on the tension, cause I broke pins that hold on my 7.85" 8 rib crank pulley...
Here ya go Bos,
I just ordered mine today. I will let you know how it works in 3-4 weeks. I emailed ASP and asked them if they could make the kit any faster than that, but I am still waiting on a response.
J
I just ordered mine today. I will let you know how it works in 3-4 weeks. I emailed ASP and asked them if they could make the kit any faster than that, but I am still waiting on a response.
J
NA$ty, I don't know which s/c pulley size they are going to send me. I guess asp/rpmoutlet has this figured out over there. I told them my boost target is 15psi so we will see. I doubt the s/c will be any smaller than a 3.4 because that should net me 12-15psi with no slippage that the cog will put out. I am hoping ASP will shed some more info on this with their response to my questions on this kit.
Treading new waters,
J
Treading new waters,
J
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Verdad Gallardo TECH Senior Member
Joined: Nov 2001
Posts: 11,603
Likes: 0
From: Chi-Town, IL
I highly doubt it, it took them 5 weeks to make just my crank pulley...
Defiently let me know how it works out, are you shooting for 12psi area? I'm trying to get arond there, but will most likely opt for 15-16psi....
What size pulleys did you go with?
Defiently let me know how it works out, are you shooting for 12psi area? I'm trying to get arond there, but will most likely opt for 15-16psi....
What size pulleys did you go with?
I am getting 13psi with a big nosedive to 9psi now, but I want to be hitting 15psi once everything is done. I know about the wait too, I had them make me a 2.70 steel pulley for my Lil Powedyne back in the day and it took 2 weeks for just that little thing.
As for the pulley sizes I guess that is something ASP knows how to figure out because there is no option on pulley sizes
J
As for the pulley sizes I guess that is something ASP knows how to figure out because there is no option on pulley sizes
J
TECH Senior Member
Joined: Nov 2001
Posts: 11,603
Likes: 0
From: Chi-Town, IL
You can order any size you want with this cog setup from RPM outlet right...say right now I'm running a 7.85" crank pulley and a 3.3" blower pulley, I think this will get me around 14psi max if the belt grabs......could I have the COG pulleys made in the same size?
Thread Starter
Joined: Aug 2002
Posts: 10,331
Likes: 1
From: San Antonio, TX
Frcefed, So you dont know what size pulleys they are sending you?? You did ask them in your email to them right?? If they send you the kit and it doesnt make the boost you were asking for are they going to send you a different pulley and not charge you again for another blower pulley and belt like some peoiple we know (ATI). Just wondering how they figure what boost you will make without knowing what all mods you have.
Kyle
Kyle
i think the pulley size is limited by belt length, cause the belt lengths are determined by teeth numbers.
i guess the best way to describe it is by ratio of teeth.
say you had a 7.85 crank pulley and a 3.4 blower pulley , then your ratio will be 7.85/3.4 = 2.31 of overdrive.
so in cog talk lets say you had a crank pulley with 36 teeth, to get the same ratio as before you'll need a blower pulley with : 36/2.31 = 15.5 teeth ( 15 or 16 teeth will be very close).
hope i didn't sound like a nerd....
i guess the best way to describe it is by ratio of teeth.
say you had a 7.85 crank pulley and a 3.4 blower pulley , then your ratio will be 7.85/3.4 = 2.31 of overdrive.
so in cog talk lets say you had a crank pulley with 36 teeth, to get the same ratio as before you'll need a blower pulley with : 36/2.31 = 15.5 teeth ( 15 or 16 teeth will be very close).
hope i didn't sound like a nerd....
Thanks dirty, didn't sound like a nerd and that cleared that up. I bet you are dead on when I get the kit.
Na$ty, I feel safe that ASP knows the tooth count that I need to achieve 15psi with the questions asked in the order form. In the response that ASP sent the person asked what rpm I was shifting at and what I wanted to spin the s/c to. I guess they determine it this way. It was also stated that I need to space the s/c foward .280 to get everything to fit right. I don't know if they provide the hardware to do this or recommend something to get this done. So I fired off another email asking if they provide the spacers or something. I hate finishing other companies ****, Don't they understand the meaning of a complete kit? ATI doesn't. 490 bucks is a lot to spend if you have to go out and buy some freakin little spacers that they can provide in that cost.
Oh yeah ASP said the wait was more like 5-6weeks for those who are interested, isn't the racing season coming to an end?
J
Na$ty, I feel safe that ASP knows the tooth count that I need to achieve 15psi with the questions asked in the order form. In the response that ASP sent the person asked what rpm I was shifting at and what I wanted to spin the s/c to. I guess they determine it this way. It was also stated that I need to space the s/c foward .280 to get everything to fit right. I don't know if they provide the hardware to do this or recommend something to get this done. So I fired off another email asking if they provide the spacers or something. I hate finishing other companies ****, Don't they understand the meaning of a complete kit? ATI doesn't. 490 bucks is a lot to spend if you have to go out and buy some freakin little spacers that they can provide in that cost.
Oh yeah ASP said the wait was more like 5-6weeks for those who are interested, isn't the racing season coming to an end?
J
TECH Senior Member
Joined: Nov 2001
Posts: 11,603
Likes: 0
From: Chi-Town, IL
So if I called and told them I want to see 15psi + with my current setup and pretty much max out the blower they can come up with a pulley combo, I'm sure I would go with something similar to yours, I just want to see what you actually see with it before I go jumping in..
I will do this COGS if I can't get rid of all my blower stuff...
I will do this COGS if I can't get rid of all my blower stuff...
Thats the impression that the person gave me in its email. When I talked to lee@ASP over there along time ago he told me which pulley size I needed to see 9psi with my PD, and he was right, I saw 9psi with his pulley. So I am pretty sure they know what they are doing if they know the boost target/shift rpm and blower speed that it will be turning.
In my email I told them maxing out the blower or getting close to it wasn't an issue with me. I want to turn 15psi. So send me the right set up.
**** if I get a 13psi with no nosedive I will be happy at this point. To see the numbers that came up on the dyno really got me going. The power it made at 44-5500rpm was pretty damn impressive to me HP/TQ were off to a real good start.
I hope you still have your stuff by the estimated time it will take them to get it to me...5-6 weeks
J
PS try and email them or give them a call and see what they say about the cogs and your set up. I still want to see the power you will make with your set up and to see you move down on the FI list. Don't throw in the towel just yet.
In my email I told them maxing out the blower or getting close to it wasn't an issue with me. I want to turn 15psi. So send me the right set up.
**** if I get a 13psi with no nosedive I will be happy at this point. To see the numbers that came up on the dyno really got me going. The power it made at 44-5500rpm was pretty damn impressive to me HP/TQ were off to a real good start.
I hope you still have your stuff by the estimated time it will take them to get it to me...5-6 weeks
J
PS try and email them or give them a call and see what they say about the cogs and your set up. I still want to see the power you will make with your set up and to see you move down on the FI list. Don't throw in the towel just yet.
Last edited by frcefed98; Oct 29, 2003 at 04:54 PM.
