low pressure area inside APS body

[Koncretekid]

You've obviously been holding out on us!  Now it's time to share.  Tell us a little more about your build; maybe put it in build diaries.  I'm guessing smallish motor as you're only expecting 120 mph and you've got a very aerodynamic design from what I can see.
Tom

[Stainless1]

And unless you take advantage of the enclosed tail allowed in APS you may be leaving some speed on the table   
Nice looking scooter

[sofadriver]

Thanks guys.
Now that Im hung up waiting on the motors I'll probably start a build diary.
Thats my A class tail just being fitted. The APS tail is already done. Gotta put it on a diet, though.

[Sumner]

...Were you connected with the Purple Sage store in Las Vegas?

No, wasn't aware of it.  I built the trading post in about '93 and needed a name and had just read Zane Grey's Riders of the Purple Sage and the story was in this area so stole the name from that.

As the others have said keep posting pictures and details,

Sum

[Seldom Seen Slim]

You mention an APS tail and make it sound like it's different from the plain "A" tail.  As I interpreted it (a handful of years ago) the tail section could be the same in the partial streamlined and naked classes.  It's after the rider so most anything goes.  Has it changed from that?

[sofadriver]

You mention an APS tail and make it sound like it's different from the plain "A" tail.  As I interpreted it (a handful of years ago) the tail section could be the same in the partial streamlined and naked classes.  It's after the rider so most anything goes.  Has it changed from that?

Yep
APS can end 10" behind the tire - A only 3"
A tail cant be below the rim - APS just 4" off the ground and no taller than 36.
If my unconventional home designed APS tail doesnt work I can always use the A tail.

[Koncretekid]

Sofa,
I cannot see your tail section.  However, to answer Jon's question, the following tail is now legal in both BUBs and SCTA.  In fact, mine is only 8" beyond the back of the tire; 10" is allowed.
Tom

[Seldom Seen Slim]

Well, I'll be go to hell.  I guess I should have read the new rules as carefully as I did the old set.

[salt27]

Well, I'll be go to hell.  I guess I should have read the new rules as carefully as I did the old set.

I think what Jon meant to say was, I'll be go to Hillman or Hupmobile or Honda or something like that.   

[sofadriver]

 Koncretekid ..........HOLEY MOLEY, Dude!! That's awesome!

If I can get these pics to post I'll start a build diary. I'll be looking for lots of constructive critiques.

[donpearsall]

Hey you copy cats!

[sofadriver]

Hey you copy cats!

Yeah, really! I didn't know there were so many yellow bikes out there.

You're in Tacoma?
I sure would like to chat face to face with someone with some experience at this.

[1212FBGS]

Sofa
closing up the front of the fairing can be a good or a bad thing.... really depends on the weight on the front tire and speeds.... CFD will say good but looking at the rake of your fairing it would probably be unstable over 176ish.... the style line at the front of the fairing behind the forks is way way way way way way way way way way way way bad..... way way way way way way way way way way way way too sharp and will create separation drag as the air tumbles down the side of the bike... soften this to a 4" minimum radius.... leading edges round, trailing edges sharp always....

[Stan Back]

He doesn't post much -- but knows of which he speaks (which I don't).

[sofadriver]

Sofa
closing up the front of the fairing can be a good or a bad thing.... really depends on the weight on the front tire and speeds.... CFD will say good but looking at the rake of your fairing it would probably be unstable over 176ish.... the style line at the front of the fairing behind the forks is way way way way way way way way way way way way bad..... way way way way way way way way way way way way too sharp and will create separation drag as the air tumbles down the side of the bike... soften this to a 4" minimum radius.... leading edges round, trailing edges sharp always....

Thanks. This is the kind of input I need. Youre talking about the cheek area only,  right? Following the fork angle is OK?