| Author | Message | ||
     Aaron |
   (roughly 2-1/2 times the surface area of the original S2 element, in case you're wondering)  (Message edited by aaron on January 24, 2005) | ||
| Firemanjim  |
Try again,Aaron,definitely want to see it. (OOPS) (Message edited by firemanjim on January 24, 2005) | ||
| Bluzm2  |
How much Aaron, I need one. Mine's cracked... | ||
| Aaron |
I hear ya, Brad, that stock backplate is, ahem, a bit "crude". You can see the shape mine was in, too. Beyond that, the stock filter element is kinda small for making power. Just made this yesterday. Got a little more work to do before I start shipping them but it won't be too long. Kinda silly to even come out with performance parts for a ten year old bike that only a couple thousand were produced, I really only did this because I needed one, but hey, I'll toss'em out there if people want them. Tell me this ... would you be more interested in one that uses your original element (an SE unit, 1-5/8" thick), a 2" K&N element, or the 3" element I'm showing above? That'll affect the price, the filter element is the most expensive piece of the thing. | ||
| Bluzm2 |
Aaron, I'd probably go with the 2" K&N as I currently have no designs for major hop ups on the S2. The 2" would keep it looking pretty stock and yet breath a bit better. | ||
| Tom_k |
Aaron: I am interested in the prices of the 2" and the 3" unit. I was planning to make my own, but if yours aren't too bad it would save me some time. The 2" would probably be plenty for the mods I have planned. Thanks. | ||
| Aaomy  |
aaron same as tom k above me,, was thinking about doing it myself, for other reasons though. but was curious about the $ just wanted you to know that people are interested, price of 2" and 3" also, probably lean more twards the 2" | ||
| Josh_  |
... and will it fit the body of an RS? | ||
| Firemanjim |
Aaron,just need backing plate as I have both stock and 3" already--with a nice deep cover from an American Sportbike kit that Tat separated for me long ago. | ||
| S2pengy  |
Aaron Interested in the 2 inch also... Thanks | ||
| Jersey_thunder |
2" HERE ALSO T | ||
| Smoke |
2" for me, also. rim | ||
| Aaron |
Looks like I better get busy, maybe this market's a little bigger than I thought  The main thing is coming up with the correct standoff lengths for all 3 filter elements. I make them myself, and they're not that trivial to get right, especially that one that has to go right through the venturi ring. But once I have each size and application worked out, I can crank'em out. FYI here's a pic of filter elements I took for the Sportster guys:  Left to right: - 04-05 XL Screaming Eagle (just under an inch of filter element, paper) - 95-96 S2/91-03 XL Screaming Eagle (just over an inch of filter element, K&N) - HurricaneFlow 2" (1-1/2 inches of element, K&N) - HurricaneFlow 3" (2-1/2 inches of element, K&N) Josh, I dunno, I'd have to look at yours, but if it's like mine, the S2 version won't fit but I think the regular horizontal version would bolt right up. Mine has this extremely crude adapter that comes off the carb, down and back to the air cleaner, and the adapter actually does the clocking of the bolt pattern. The air cleaner itself (backplate/standoffs/element) appears to be a 4-speed version of an SE. These 4-speeds breathe off the cam cover and a hose leads from there into the backplate. The only caveat is that the hole in the RS's backplate for the carb opening isn't vertically on-center, it's shifted up half an inch. But it sure looks like I've got the bodywork clearance to move the thing up that much. I have this air cleaner in a regular 91-03 XL style, I'm offering it with a 2" element:  This is the first proto but it came out good, I'll be offering them shortly. The '04-05 XL version of course is shipping. Planning on an S1/M2/S3 version, too, gotta find a good source of covers though. | ||
| Court |
>>>2" for me, also. | ||
| S2pengy |
Aaron If you are using the 2 inch filter couldn't you reuse the standoffs??? | ||
| Aaron |
No, the stock filter is 1-5/8" tall, and the one that goes through the venturi ring is different anyway, and I like round standoffs anyway, air flows around them better. I'm really surprised the interest is in the 2" element, I figured everyone would want the 3" like me I'll work on it, give me a week or two to get it all sorted out and whip up a few. (Message edited by aaron on January 25, 2005) | ||
| Court |
Aaron: My thinking....I'd like to "show a little leg" and have "some" exposed element. I *think* (subject to your correction) that the 2" would be "enough" given my mild plans. do I need 3"? I'm willing to adopt a "more is better" stance if you think it better....  | ||
| Henrik  |
2" vs. 3": Question is, how much air would be necessary at what levels of performance upgrades? Or, at what performance levels would a 2" filter be holding back the motor? Example: an S2 motor with XB heads, angle squish and pistons to match - nothing exotic as far as headwork. 1250 kit Axtell Nicasil cylinders. Compression ratio and cams chosen for torque and street-ability - not for high HP. Exhaust: either '98 model stock or race headers with good flowing muffler - possibly Supertrapp IDS. Edit: forgot to include a Mikuni carb in the list. 2" or 3"? Henrik (Message edited by henrik on January 25, 2005) | ||
| Bluzm2 |
Good questions Henrik. Aaron, will the stock S2 Cf cover fit? Mine's in pretty good shape for an original. Having a bit of exposed filter "leg" like Court mentioned would also be very acceptable. Brad | ||
| Aaron |
Tell you what, rather than give you what I *think* is the answer to those questions, why don't I just make some measurements. I have all the element sizes (stock, 2", 3" and a dyno and a mild street motored S2, so what the hey. Brad, no worries mate, the last picture in my first post is my original CF cover bolted on over the 3" element. I took that angle just to show how it leaves a little bit of the filter exposed, ala the race kit filter. | ||
| Henrik |
Ohh dyno numbers ... that would be most cool, but hazardous to my check book  Henrik | ||
| Phillyblast  |
Hey Henrik, You just described my S2 in about another month (best Homer Simpson voice - oooooh, dyyynnooo) | ||
| Henrik |
Hi Philly - Great minds ... and all that yeah, I saw your shopping list in other threads ... Let us know how your S2 engine upgrade works out. Dyno tuning etc. Henrik | ||
| Smoke |
good plan, aaron tim | ||
| Aaron |
Just figured out that the 3" won't let the fairing lowers go on. It crowds the tank cover quite a bit, doesn't leave enough gap there. Maybe not even enough to run without the fairing lowers. I'm sure there would be some contact, but I don't know if it'd be bad enough to cause an issue or not. In any event, I'm reasonably sure I can make everything clear ok with the 2" element, so it'll be a viable product. My stock back plate was warped really badly and the stock air cleaner wasn't sealing well against it. Y'all should check yours. | ||
| Bluzm2 |
Aaron, That's what mine is doing. I used some cheesy weather strip stuff until I come up with something better. But,,, I looks like you already did! | ||
| Buellerthanyou  |
Aaron, I've been running a 3" K&N on my S2 with a Sporty chrome cover (didn't want to cut the "drip catcher" off of the CF original). No clearance problems or contact with the tank cover, though I haven't tried to run it with the fairing lowers. Sadly, I don't have the correct stand-offs (looked everywhere but no one seems to carry anything like 'em) and have just been using loooooong countersunk allen heads, similar to the originals, but longer (one fell out the other day!  ). Yikes! Would be very interested in the long stand-offs like in your third picture. Also, do you have a source for carbon fiber covers? Prefer the color/weave similar to the later Buell Race Oval covers, not the green/gold of the original S2. | ||
| Court |
DittoDanish: Ohh dyno numbers ... that would be most cool, but hazardous to my check book | ||
| Henrik |
McMaster-Carr may have something that would work; do a search for "stand off" Henrik | ||
| Djkaplan  |
McMaster-Carr..., heh,heh. I've had my nose buried in their catalog all morning working up an order for a special project. Aaron - I'd be interested in the upcoming version of the Nallin filter for the M2. I like my Forcewinder, but its vulnerability worries me. How does the 3" version work in the rain? |
