Velocity stack and more...
Road Warrior
Joined: Jun 2005
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RE: Velocity stack and more...
Interesting take guys. I am all ears for sure. My question is this, if it robs performance..why would you put it on a custom bike? Or why would they be used on the drag strip? I honestly don't know so I am just playing devil's advocate here.. You don't know till you ask.
The one you showed has a very tiny air filter. That's where the problem lies. The surface area of the air filter is too small to properly feed your engine IF if filters well. So if it filters well, the surface area is too small, and it will signficantly cut performance. However, if it doesn't cut performance, then the filter does not filter well and then you are back to getting crap into the engine that cuts longevity.
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Road Warrior
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RE: Velocity stack and more...
Got it. Thanks 1200c, great explaination.. The other AC I like is the Forcewinder and the Big Sucker. My hold back with the Big Sucker is the problems with blow-by. I know there is a mod out there but I really like the vent method. So maybe the DragTron II, any experience with those? With that AC I can do the blow-by venting that I like. I know I hate the HAM CAN!!
Road Warrior
Joined: Jun 2005
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RE: Velocity stack and more...
Are you looking for the looks of a velocity stack or the performance gains of velocity stack? If you just care about the performance gains, then there are air filters that have a velocity stack in the backing plate. Since you don't like the ham can. The powerpacc is a great round air filter with a velocity stack in the backing plate. It is, however, more expensive than other air filters.
http://www.dohertymachine.com/produc...products_id=16
By putting an air filter inside a velocity stack you either have to sacrafice filtration or performance. By putting an air filter around a velocity stack you get to keep both filtration and performance.
http://www.dohertymachine.com/produc...products_id=16
By putting an air filter inside a velocity stack you either have to sacrafice filtration or performance. By putting an air filter around a velocity stack you get to keep both filtration and performance.
Road Captain
Joined: Mar 2006
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RE: Velocity stack and more...
ORIGINAL: 1200c
Are you looking for the looks of a velocity stack or the performance gains of velocity stack? If you just care about the performance gains, then there are air filters that have a velocity stack in the backing plate. Since you don't like the ham can. The powerpacc is a great round air filter with a velocity stack in the backing plate. It is, however, more expensive than other air filters.
http://www.dohertymachine.com/produc...products_id=16
By putting an air filter inside a velocity stack you either have to sacrafice filtration or performance. By putting an air filter around a velocity stack you get to keep both filtration and performance.
Are you looking for the looks of a velocity stack or the performance gains of velocity stack? If you just care about the performance gains, then there are air filters that have a velocity stack in the backing plate. Since you don't like the ham can. The powerpacc is a great round air filter with a velocity stack in the backing plate. It is, however, more expensive than other air filters.
http://www.dohertymachine.com/produc...products_id=16
By putting an air filter inside a velocity stack you either have to sacrafice filtration or performance. By putting an air filter around a velocity stack you get to keep both filtration and performance.
Road Captain
Joined: Mar 2006
Posts: 663
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RE: Velocity stack and more...
OH nevermind I should look befor asking... I see they have one that uses the S&S tear drop... Hum may need one of these. How do I know if I need to rejet if I buy it? Also how the hell do you know what jets to use? I am carb stupid. Not tring to thread jack but now you got me thinking..
Also would this filter add much if any performance over the SE cleaner?
Also would this filter add much if any performance over the SE cleaner?
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Road Warrior
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RE: Velocity stack and more...
There is a section on this board...at the top of the Sporty Forum on re-jetting. Thanks again 1200. I may go that route. 219.00 ain't bad for everything basically...
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Road Warrior
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Road Warrior
Joined: Jun 2005
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RE: Velocity stack and more...
I looked at the dragtron and it looks good. It seems to have a small stack in it's backing plate similar to the HurricaneFlow. The price is what sets it apart. For $85 the price is nice. It does appear to have a foam air filter instead of a K&N. There are differences in flow between foam and K&N. I have no experience with the dragtron, but it seems worth trying.
Here is some flow data that I saved from awhile back. I have no idea how accurate it is nor who posted it.
H-D stock 165.5
CCI/ Halebob 197.5
Dragtron 243.3
Force Motor (BLK) 262.2
w/ Filtercharger cover 250.8
Force Motor ( WHT) 284.6
w/ Filtercharger cover 281.6
CCI/ Siren 330.1
H-D Screamin' Eagle 421.8
Zipper's Performance 455.6
Arlen Ness Big Sucker 483.1
Rivera Smoothie 499.8
CCI/ Cyclesmiths 516.9
Here is some flow data that I saved from awhile back. I have no idea how accurate it is nor who posted it.
H-D stock 165.5
CCI/ Halebob 197.5
Dragtron 243.3
Force Motor (BLK) 262.2
w/ Filtercharger cover 250.8
Force Motor ( WHT) 284.6
w/ Filtercharger cover 281.6
CCI/ Siren 330.1
H-D Screamin' Eagle 421.8
Zipper's Performance 455.6
Arlen Ness Big Sucker 483.1
Rivera Smoothie 499.8
CCI/ Cyclesmiths 516.9
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Road Warrior
Joined: Jul 2006
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RE: Velocity stack and more...
I assume those are CFM #'s? Good stuff there!!
I got some info from the Velocity guy... kinda hit & miss...
I am not comfortable with this info. It was nice of him to actually get back to me. And he was not afraid to answer some #'s questions I had but.. I'm thinkin more performance now... I have the SE on there now and it's #'s look pretty good from that list. I think I will step it up a bit and check outthe Cyclesmiths or Rivera..
I appreciate your info and contrasting view on this. Nice to know we can still have a productive conversation on this board.
I got some info from the Velocity guy... kinda hit & miss...
Hi Andy,
This particular filter element is not measured in microns. It is measured in Pores Per Inch. Ours are a 60 PPI. This works on most stock to mildly modified bikes. It filters a lot more than the screens. It is a dry filter (no oil) that can be washed. For highly modified bikes we also offer a kit that uses a 30 PPI filter. It has the opening size similar to the screen but since it is a 1/4" thick foam there really isn't a straight shot through it like a screen so it does a better job than the screen of trapping dirt. At this time I am out of 30 PPI material. I've only sold one with this material and it was cut from a sample piece from our foam vendor.
Is this going on a CV or S&S carb? If an S&S we have the units now for the S&S E & G series carb so no adapter is required. We just have not finished the pictures to put them in either of our stores. But they are in stock and ready to ship as are the CV ones.
Hope this answered your question.
Thanks for the interest, Don
This particular filter element is not measured in microns. It is measured in Pores Per Inch. Ours are a 60 PPI. This works on most stock to mildly modified bikes. It filters a lot more than the screens. It is a dry filter (no oil) that can be washed. For highly modified bikes we also offer a kit that uses a 30 PPI filter. It has the opening size similar to the screen but since it is a 1/4" thick foam there really isn't a straight shot through it like a screen so it does a better job than the screen of trapping dirt. At this time I am out of 30 PPI material. I've only sold one with this material and it was cut from a sample piece from our foam vendor.
Is this going on a CV or S&S carb? If an S&S we have the units now for the S&S E & G series carb so no adapter is required. We just have not finished the pictures to put them in either of our stores. But they are in stock and ready to ship as are the CV ones.
Hope this answered your question.
Thanks for the interest, Don
I appreciate your info and contrasting view on this. Nice to know we can still have a productive conversation on this board.