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Author Topic: Buddfab Streamliner  (Read 29244 times)
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Eric_Noyes
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« Reply #30 on: June 22, 2006, 07:21:38 PM »

I have the book ?The Leading Edge?.  We just prioritized the aero package and got the big stuff done first, the exact wheel positions were not incorporated into the male body plug.  Wheel fairings, wheel covers, smoother bodywork with smaller gaps and seams, flush head body screws, are all planned, and will add a little bit to the top speed.  The plan to modify the bodywork is the main reason we haven?t painted it yet (I?m sticking to this excuse as long as I can), and after making the body, neither John nor I wanted anything to do with fiberglass ever again.  But as time passed the itchiness slowly went away and we got up the courage to make the sidecar wheel fairing.  After the memory of that project sufficiently fades, and we run out of other things to do, we?ll get back to cleaning up the body details.
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PJQ
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« Reply #31 on: June 22, 2006, 08:08:28 PM »

G'day Buddfab team,

You guys have done an amazing job.

The web site is really informative and I like the smarts in the design: using the frame tubing to store air, and hide hoses & cables - fantastic stuff. Using expanding foam to shape the body moulds is a great idea. We're nearing the body skin stage and I was dreading the effort of making moulds. Expanding foam is much easier than old-skool ply and bog technique we were about to use.

And that speed from the running gear of a Hair Dryer. There's a couple of old Vespas rotting in the back yard, might dig them out and start Project #178.

Regs,
PJQ
Velocity Science Laboratories
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Regards,
PJQ
Velocity Science Laboratories
Eric_Noyes
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« Reply #32 on: July 24, 2006, 11:41:43 AM »

John posted my July El Mirage report (typos and all).  We entered the 50cc fuel sidecar streamliner class.  On Sunday morning we detuned the motor (protection against the heat) and installed higher gearing than last month, John made it to the other end at 98mph.  We went for big numbers on my run in the afternoon; I had a very good start but the engine give up the ghost at the half-mile point.  We expect to have a bunch of new hardware ready for the Bub event.  Hope to see you there.


In my May ?06 El Mirage report I described the problems we had with the parachute.  Jack Costella uses the same chute on his liner, to reduce the extreme shock loads on deployment he folds the attachment line into a series (a dozen or so) of short pleats and secures them with masking tape.  The bundles rip open progressively making the attachment line act like a very elastic shock cord, it works great with the tiny (60 inch) parachutes that we use.
   Eric

http://www.geocities.com/buddfab/latestnewsjuly06.html
http://www.geocities.com/buddfab/buddfab3
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dirtydave
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« Reply #33 on: September 18, 2006, 08:12:55 AM »

Hey Guys,
Love your mini liner, have takin quite a bit of interest in your project great work at the Bub speed trials, Is there much factory development in the 50cc engine, thought the 125cc motor would be given priority by the factory for motogp  racing..Anyway that takes nothing away from your acceivement, cheers and 140 mph may not be that far away :-k  smiley
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Rex Schimmer
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« Reply #34 on: September 18, 2006, 09:22:58 AM »

Eric,
First congradulations on the records and I will be pulling for you to go over 140 at the October meet!!
1. I was looking at your site and was interested in the plan view shape of your body. Is this shape based upon a NACA symetrical wing profile?
If so which one did you select?

2. I see in your engine section that you wrap the expansion chamber with insulation. Is this just to keep things cool or do you find an power increase?

Great bike and best of luck in October!!!

Rex
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Rex

Not much matters and the rest doesn't matter at all.
Eric_Noyes
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« Reply #35 on: September 18, 2006, 12:01:40 PM »

This has been a team effort with John.  He decided to build a small bore streamliner after building the nose for the Ack Attack, his enthusiasm was infectious and we started collaborating on the design.

I started with a NACA 0018 symmetrical airfoil and distorted it to match the length and width of our hardware package.

As the pipe gets hotter the power moves to a higher rpm; the wrap makes the power band more consistent.  Also we have minimal airflow through the engine compartment so the wrap helps keep the fuel, nitrous, motor and other components cooler.
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Eric_Noyes
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« Reply #36 on: September 26, 2006, 11:28:40 AM »

John now has a link to a short video shot by Mike Stanton on our home page.

http://www.geocities.com/buddfab/buddfab3

Mike was shooting still pictures of motorcycle streamliners at the zero mile of the 06 Bub Event for his English magazine   http://www.speedrecordclub.com  John handed him his tiny video camera (any suggestions on a device, that?s smaller than a tripod, that can stabilize a four inch long camera when using a lot of zoom would be appreciated).

This was the last half day of the event; we waited all day the day before; and several hours that morning for the winds to die down.  Rick and I pushed John off; he is running fuel; on our first attempt at the long course the motor broke a ring at about four miles and trashed the top end.  John was using the first three miles of this run to break in the new top end; short shifting by two thousand rpm (not 4) and using part throttle.  It just starts to pull into the power band; he shifts into second; presses the handle bar switch and the air cylinders pull up the landing gear; he shifts into third, as the clip ends he is about to shift into 4th at about 85 mph.  John entered the measured mile (5 miles from the start) at 130 mph and exited at 135 mph.  We ended up with an AMA record of 133.895 mph (AMA  S-AF) two way average.
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Dean Los Angeles
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« Reply #37 on: September 26, 2006, 06:55:49 PM »

Another exhaust question. Why the muffler?
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It's bigger than life or death! It's RACING.
Reverend Hedgash
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« Reply #38 on: September 26, 2006, 07:24:03 PM »

To make it street legal of course!
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Dave H.
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« Reply #39 on: September 26, 2006, 08:39:51 PM »

Hi Eric,

Sounds like a good application for a monopod, the still photo guys
use them when they need a compromise between stability/mobility.

Cheers,

Dave
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Eric_Noyes
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« Reply #40 on: September 27, 2006, 11:09:58 AM »

We don?t use a muffler at an event just a straight stinger.  We sometimes perform a baseline dyno run without one, but then put one on.

 I like two strokes but I don?t think anyone other than possibly the profoundly deaf wearing earplugs and headphones; could tolerate for more than a few seconds; the high-pitched crackle that the straight pipe makes at maximum rpm (14,000 +).  A straight through silencer (don?t trust any pipe you can?t see through) has very little effect on the power curve but the deeper softer tone drastically decreases the blood pressure rise of anyone within an eighth mile radius.
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Eric_Noyes
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« Reply #41 on: October 25, 2006, 10:44:53 AM »

John put our October El Mirage report up on the web site.

The short version is: we left with only 25 points.

While we were preparing for the World Finals I took some photos of the new motorcycle landing gear; we will post them with a description soon.

http://www.geocities.com/buddfab/buddfab3
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Sumner
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« Reply #42 on: October 25, 2006, 11:29:12 AM »

Quote from: Eric_Noyes
John put our October El Mirage report up on the web site.

The short version is: we left with only 25 points.

While we were preparing for the World Finals I took some photos of the new motorcycle landing gear; we will post them with a description soon.

http://www.geocities.com/buddfab/buddfab3


Great story, sad ending cry .  There are so many details to this LSR and any one of them can jump up and get you.

Sounds like you might have the motor running on fuel better Cheesy .

I haven't forgotten you guys and hope to have some of your pictures reduced in size and up soon.  

Good luck at the Nov. meet,

Sum
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1212FBGS
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« Reply #43 on: October 25, 2006, 11:59:17 AM »

Hey Eric
El Mo gets very cold at night, a couple of years ago at the november meet my cooling system froze. we took all the hoses off and ran hot water on them to try to thaw them in the shower of the motor home. we thought the blocks would thaw themselve out but the water pumps broke from the water expantion. so we went home. I installed 3ea 1500 watt 110v heating eliments in the 30 gallon tank. we heat the water up to 180f and then turn on the electrin pumps to warm the blocks up. you could install a 12v evement in your system and run jumper cables from your chase truck. you could also put quick disconects on your hoses and jump the system from your chase truck radiator. always drain your system or use anti freeze in oct and nov meets. I also buy boxes of these single use anti static wipes that look like handi wipes from mc master carr. my guys use them on there face shields in our dust grinding booth, they work great. big learning experiance from little stuff.
yours in sport
Kent
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1212FBGS
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« Reply #44 on: October 28, 2006, 02:11:53 PM »

hey eric

El Mirage procedures award "recognition points", section VII A.2.d) "all entrants which fail to cross the finish line after push-off shall be awarded twenty-five (25) points". On the SCTA website, they awarded you "0" huh ya might want 2 drop them a email and get it corrected
kent
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