Custom cog balancer is half way done.
Thread Starter
Melting Slicks
Joined: Mar 1999
Posts: 2,535
Likes: 2
From: Rochester NY
Custom cog balancer is half way done.
It look awsome, half way done, I probably will try to install it late Sat. I know I will be finishing up on machining the cog teeths on Sat in the morning. And buffing off all the sharp edges that it. Well so far so good. Almost 2 months of down time for this. Can't wait to get it running.
Bruce
Cog set up is coming by the end of this week
93LT1 Conv w/ZF6
Blown D1-SC/N2O
ARE built 383ci/Stage II heads
Bruce
Cog set up is coming by the end of this week
93LT1 Conv w/ZF6
Blown D1-SC/N2O
ARE built 383ci/Stage II heads
Thread Starter
Melting Slicks
Joined: Mar 1999
Posts: 2,535
Likes: 2
From: Rochester NY
Re: Custom cog balancer is half way done. (Bruce)
I finally installing the cog set up. But not quiet done yet. I am working on it all day today and still not done . What a pain in the butt$ it was doing the 8ribs/cog coversion. Its definately is not an easy task. Now I understand as to why there is no conversion kits available because to many mods invlove and will need total custom work to get it to work.
I have pis if you would like to post it foe me.
Bruce
I have pis if you would like to post it foe me.
Bruce
Pro
Joined: Nov 1999
Posts: 623
Likes: 0
From: Toronto, ON, Canada
Re: Custom cog balancer is half way done. (Bruce)
Posting pics as they were sent. Let me know if the images are too large and cause problems. I think the forum filter should automatically scale them down.
URLs for reference -->
http://temp.corvetteforum.net/c4/xtw...//Bruce/a1.jpg
http://temp.corvetteforum.net/c4/xtw...e/dcp_0349.jpg
http://temp.corvetteforum.net/c4/xtwinturbo//Bruce/dcp_0353.jpg
Thanks Bruce.
URLs for reference -->
http://temp.corvetteforum.net/c4/xtw...//Bruce/a1.jpg
http://temp.corvetteforum.net/c4/xtw...e/dcp_0349.jpg
http://temp.corvetteforum.net/c4/xtwinturbo//Bruce/dcp_0353.jpg
Thanks Bruce.
Thread Starter
Melting Slicks
Joined: Mar 1999
Posts: 2,535
Likes: 2
From: Rochester NY
Re: Custom cog balancer is half way done. (Vette9d1)
XTwin Turbo, Thanks for helping me posting it. The pics are look fine(not to large) I even have it lazer engraved "Custom made Balancer, Made in the USA" :)
Bruce
Bruce
Pro
Joined: Nov 1999
Posts: 623
Likes: 0
From: Toronto, ON, Canada
Re: Custom cog balancer is half way done. (Bruce)
No problems on the pics Bruce. Let me know if you want to host more.
As an aside, would you or the machine shop be interested in building another cog balancer for me? I can appreciate the effort needed to "hand" make these cog drives but if you think another set can be made let me know and we can talk via email.
Thanks
As an aside, would you or the machine shop be interested in building another cog balancer for me? I can appreciate the effort needed to "hand" make these cog drives but if you think another set can be made let me know and we can talk via email.
Thanks
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Pro
Joined: Dec 2002
Posts: 704
Likes: 16
From: Dallas Texas
Re: Custom cog balancer is half way done. (XTwinTurbo)
Hey Bruce,
If you decide to make some of these units for sale, count me in. Also, if you're looking to sell you old "stock" crank pulley, I'd be interested in that also. On a personal note, (follow up to our emails) Dr. gave me a clean bill of health to return to work and after 7 weeks of being on sick leave at home, I think it is the healthiest thing I can do as my wife was starting to show sign of wanting to club me to death or worse. Recently, she rented the "Burning Bed" w/Farre Faucet (sp?) and I caught her taking notes. lol
CT
If you decide to make some of these units for sale, count me in. Also, if you're looking to sell you old "stock" crank pulley, I'd be interested in that also. On a personal note, (follow up to our emails) Dr. gave me a clean bill of health to return to work and after 7 weeks of being on sick leave at home, I think it is the healthiest thing I can do as my wife was starting to show sign of wanting to club me to death or worse. Recently, she rented the "Burning Bed" w/Farre Faucet (sp?) and I caught her taking notes. lol
CT
Thread Starter
Melting Slicks
Joined: Mar 1999
Posts: 2,535
Likes: 2
From: Rochester NY
Re: Custom cog balancer is half way done. (Brand-X)
Chris,
I am glad you are feeling better. You gotta get your beast running some time. As far as making the cog balancer for you guys, I don't know yet because I don't how well the unit is going to work out. I have to test it out in my car first. The balancer is machine by CNC that is the easy part. But to cut the cog teeths is a pain, and a mess, coolant etc. because the cog teeth is done on the Manual milling machine with and CNC indexer, It take 3 cut to complete, 1st cut .050 2nd cut is .050 3rd- final cut is .015, each cut is 75 teeths total x 3 that is a lot of teeths to cut. But if I have to make it again I probably can. I have everything document, programing, toolings teeth indexing.. Its will need 3 pieces total
1) Cog Balancer
2) Blower cog pulley
3) New small tensional pulley---- Because ATI Idler pulley is to big it won't clear the water pump housing and optic sparks.
Bruce
I am glad you are feeling better. You gotta get your beast running some time. As far as making the cog balancer for you guys, I don't know yet because I don't how well the unit is going to work out. I have to test it out in my car first. The balancer is machine by CNC that is the easy part. But to cut the cog teeths is a pain, and a mess, coolant etc. because the cog teeth is done on the Manual milling machine with and CNC indexer, It take 3 cut to complete, 1st cut .050 2nd cut is .050 3rd- final cut is .015, each cut is 75 teeths total x 3 that is a lot of teeths to cut. But if I have to make it again I probably can. I have everything document, programing, toolings teeth indexing.. Its will need 3 pieces total
1) Cog Balancer
2) Blower cog pulley
3) New small tensional pulley---- Because ATI Idler pulley is to big it won't clear the water pump housing and optic sparks.
Bruce
Pro
Joined: Dec 2002
Posts: 704
Likes: 16
From: Dallas Texas
Re: Custom cog balancer is half way done. (Bruce)
Bruce,
I've been looking at my 8-rib setup and there is about 3/16" between the pulley and the Optispark. I have convenced myself that I could get a 10-rib to fit if I shimmed the accessories brancket and crank hub out approx. 1/4"...I'll wait to see if the 8-rib holds the boost I want to run. I thik if you develop a blower bracket, tensioner, and cog drive for the ATI based units, you could probably sell a dozen of them on this board alone. I plan on working on the car this weekend...lots of wiring to do. I bought a custom wiring harness from Fasttrack performance that merges my Accel gen VII+ unit into the stock wiring harness. However, the instruction book is bigger than the kansas city yellow pages...yikes! The good news is, I won't have two wiring harnesses under the hood and it will look nearly stock clean. Still on the fense about the intercooler. I've nearly committed to the Spearco air-to-water unit located in the same spot as the ATI intercooler with a remote heat exchanger located in the spare tire tub (to be modded) with an electric fan. As you kow, I was seeing a 7 psi drop across the ati unti (12 psi thru intercooler, 19 psi bypassing it)
CT
[Modified by Brand-X, 2:23 PM 8/21/2003]
I've been looking at my 8-rib setup and there is about 3/16" between the pulley and the Optispark. I have convenced myself that I could get a 10-rib to fit if I shimmed the accessories brancket and crank hub out approx. 1/4"...I'll wait to see if the 8-rib holds the boost I want to run. I thik if you develop a blower bracket, tensioner, and cog drive for the ATI based units, you could probably sell a dozen of them on this board alone. I plan on working on the car this weekend...lots of wiring to do. I bought a custom wiring harness from Fasttrack performance that merges my Accel gen VII+ unit into the stock wiring harness. However, the instruction book is bigger than the kansas city yellow pages...yikes! The good news is, I won't have two wiring harnesses under the hood and it will look nearly stock clean. Still on the fense about the intercooler. I've nearly committed to the Spearco air-to-water unit located in the same spot as the ATI intercooler with a remote heat exchanger located in the spare tire tub (to be modded) with an electric fan. As you kow, I was seeing a 7 psi drop across the ati unti (12 psi thru intercooler, 19 psi bypassing it)
CT
[Modified by Brand-X, 2:23 PM 8/21/2003]
Le Mans Master
Joined: Apr 2000
Posts: 7,562
Likes: 9
From: B'Ville NY
Cruise-In III Veteran
St. Jude Donor '05
Re: Custom cog balancer is half way done. (Bruce)
Bruce, excelent job on milling out the teeth. How did you determine the number of teeth/ diametral pitch & pressure angle of the teeth. What kind of tool did you use to cut the teeth? It looks like you have a very nice CNC mill :yesnod: !
Thread Starter
Melting Slicks
Joined: Mar 1999
Posts: 2,535
Likes: 2
From: Rochester NY
Re: Custom cog balancer is half way done. (SmokedTires)
Chris, I don't think you will be able to run a 10 ribs. really not much room left. If you put a spacer in there then your acessories drive will need a spacer as well because your balancer 1st 6 ribs has moved. You already experienced 19psi with out belt slipage, I really think your 8 ribs is fine.
Smokedtires
I had the guy in the tool room at work grind me a 4 flute carbid end mill with 25 degree included angle. The tooling specs is based on the spec of the cog belt I measured.
I got the cad/drawing from Forum menber TJWong original designed balancer and made one for his car. The drawing shown 7.218 Pitch diameter and 72teeth. it did not tell me the outside diameter. So I measured the teeth depth of the belt and do some maths and came up 7.3275 that give me 75 teeths at .120 deep. It matched up the belt perfectly.
Bruce
[Modified by Bruce, 11:32 PM 8/22/2003]
Smokedtires
I had the guy in the tool room at work grind me a 4 flute carbid end mill with 25 degree included angle. The tooling specs is based on the spec of the cog belt I measured.
I got the cad/drawing from Forum menber TJWong original designed balancer and made one for his car. The drawing shown 7.218 Pitch diameter and 72teeth. it did not tell me the outside diameter. So I measured the teeth depth of the belt and do some maths and came up 7.3275 that give me 75 teeths at .120 deep. It matched up the belt perfectly.
Bruce
[Modified by Bruce, 11:32 PM 8/22/2003]
Le Mans Master
Joined: Apr 2000
Posts: 7,562
Likes: 9
From: B'Ville NY
Cruise-In III Veteran
St. Jude Donor '05
Re: Custom cog balancer is half way done. (Bruce)
Very :cool: , if you have a machinst handbook, there are also all the gear formulas required for engineering a gear. Kudos on your ingenuity, it looks great :cheers:
Hey I just noticed that we're practically neighbors, I live just NW of Syracuse :seeya
[Modified by SmokedTires, 10:04 AM 8/24/2003]
Hey I just noticed that we're practically neighbors, I live just NW of Syracuse :seeya
[Modified by SmokedTires, 10:04 AM 8/24/2003]
Pro
Joined: Dec 2002
Posts: 704
Likes: 16
From: Dallas Texas
Re: Custom cog balancer is half way done. (Bruce)
They're Moroso weld-ups. Had to go that route to allow clearance for my Jesel's, big springs, ad high lift.
Here's a shot of the 8-rib crank pulley...:
[Modified by Brand-X, 10:49 PM 8/31/2003]
Here's a shot of the 8-rib crank pulley...:
[Modified by Brand-X, 10:49 PM 8/31/2003]