just a thought
Thread Starter
Instructor
Joined: Jan 2007
Posts: 131
Likes: 0
From: Silver Spring MD
just a thought
If belt slippage is such a problem, why not use a chain and gear (like the timing chain?) only drawbacks i can possibly see are maybe space and it would be too violent on the sc.
Drifting
Joined: Nov 2003
Posts: 1,637
Likes: 2
From: Honeoye Ny
It's TonyDee, he's running motorcycle chain on his F3 blower. The problem with motorcycle chain is if you size it large enough for the HP it has too low a angular V limit (how tight a turn it can make) to get the ratio's you want outta it.
Also with centifugal blowers : there is such a stepup in ratio's and soo much inertial built , that violent RPM swings wreak havoc on their transmissons and the device driving them.
Anything bigger then the smallest blower should have an overrrun cluch on it in my opinion.
Also with centifugal blowers : there is such a stepup in ratio's and soo much inertial built , that violent RPM swings wreak havoc on their transmissons and the device driving them.
Anything bigger then the smallest blower should have an overrrun cluch on it in my opinion.
Pro
Joined: Dec 2002
Posts: 704
Likes: 16
From: Dallas Texas
Thanks!
Back to your question, a cog or chain setup has limited applications and unless you are making four figure HP, I'd keep it simple. An 8, 10, or 12-rib serpentine drive should resolve any belt slip issues you might have. Here's a video (talking about the intercooler but you can still see the drive) of the 12-rib drive on my car:
http://www.youtube.com/watch?v=hJlGKHqk_IU
PS-does the bracket look familiar??
Last edited by Brand-X; Dec 30, 2007 at 01:41 AM.
Pro
Joined: Sep 2007
Posts: 545
Likes: 2
From: st albert alberta
[QUOTE=Brand-X;1563373019]If someone has MKN U SHIVER's telephone number, if you could send it to me, I'd appreciate it.
Thanks!
Back to your question, a cog or chain setup has limited applications and unless you are making four figure HP, I'd keep it simple. An 8, 10, or 12-rib serpentine drive should resolve any belt slip issues you might have. Here's a video (talking about the intercooler but you can still see the drive) of the 12-rib drive on my car:
http://www.youtube.com/watch?v=hJlGKHqk_IU
pm sent
Thanks!
Back to your question, a cog or chain setup has limited applications and unless you are making four figure HP, I'd keep it simple. An 8, 10, or 12-rib serpentine drive should resolve any belt slip issues you might have. Here's a video (talking about the intercooler but you can still see the drive) of the 12-rib drive on my car:
http://www.youtube.com/watch?v=hJlGKHqk_IU
pm sent
Drifting
Joined: Aug 2002
Posts: 1,475
Likes: 0
From: Speedo Indiana
Did someone say "chain drive"?
The key to making a chain drive work/live is keeping the chain speed per feet per minute down. This means that you use a pretty small diameter (24-26 tooth) crank sprocket and a 12-13 tooth blower sprocket. A good o-ring sealed 530 motorcycle chain can make this turn no problem, as a matter of fact some motorcycles use front sprockets this small. I use a hardened sprocket for the blower, and so far so good. The only real downside is if that baby lets go under full power you'd better have a good chain guard all of the way around it or you'r going to have a "instant" custom hood (or worse).
I have mine geared to max out the blower at 7000rpm, at that point the chain speed per minute is about identical to a motorcylce in 6 th gear at about 190mph... The chain guard can also act to catch the small amounts of oil that tend to fly off of the chain. I wouldn't use a chain unless space was an issue.
The key to making a chain drive work/live is keeping the chain speed per feet per minute down. This means that you use a pretty small diameter (24-26 tooth) crank sprocket and a 12-13 tooth blower sprocket. A good o-ring sealed 530 motorcycle chain can make this turn no problem, as a matter of fact some motorcycles use front sprockets this small. I use a hardened sprocket for the blower, and so far so good. The only real downside is if that baby lets go under full power you'd better have a good chain guard all of the way around it or you'r going to have a "instant" custom hood (or worse).
I have mine geared to max out the blower at 7000rpm, at that point the chain speed per minute is about identical to a motorcylce in 6 th gear at about 190mph... The chain guard can also act to catch the small amounts of oil that tend to fly off of the chain. I wouldn't use a chain unless space was an issue.
Pro
Joined: Sep 2007
Posts: 545
Likes: 2
From: st albert alberta
Did someone say "chain drive"?
The key to making a chain drive work/live is keeping the chain speed per feet per minute down. This means that you use a pretty small diameter (24-26 tooth) crank sprocket and a 12-13 tooth blower sprocket. A good o-ring sealed 530 motorcycle chain can make this turn no problem, as a matter of fact some motorcycles use front sprockets this small. I use a hardened sprocket for the blower, and so far so good. The only real downside is if that baby lets go under full power you'd better have a good chain guard all of the way around it or you'r going to have a "instant" custom hood (or worse).
I have mine geared to max out the blower at 7000rpm, at that point the chain speed per minute is about identical to a motorcylce in 6 th gear at about 190mph... The chain guard can also act to catch the small amounts of oil that tend to fly off of the chain. I wouldn't use a chain unless space was an issue.
The key to making a chain drive work/live is keeping the chain speed per feet per minute down. This means that you use a pretty small diameter (24-26 tooth) crank sprocket and a 12-13 tooth blower sprocket. A good o-ring sealed 530 motorcycle chain can make this turn no problem, as a matter of fact some motorcycles use front sprockets this small. I use a hardened sprocket for the blower, and so far so good. The only real downside is if that baby lets go under full power you'd better have a good chain guard all of the way around it or you'r going to have a "instant" custom hood (or worse).
I have mine geared to max out the blower at 7000rpm, at that point the chain speed per minute is about identical to a motorcylce in 6 th gear at about 190mph... The chain guard can also act to catch the small amounts of oil that tend to fly off of the chain. I wouldn't use a chain unless space was an issue.
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