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Author Topic: Team Go Dog, Go! Modified Partial Streamliners  (Read 1029693 times)

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Offline wobblywalrus

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Re: Team Go Dog, Go! Modified Partial Streamliners
« Reply #1380 on: September 24, 2013, 08:11:55 PM »
Patrick, that should be "hour" instead of "mile."

Joe and Dennis, you are right.  The engine was broken in by 600 miles of street running and the silly thing was so fast that I could not blow out the carbon.  Almost all of the flickering was on the first run.  I think it pre ignition by glowing carbon while I cleaned out the combustion chamber.  The light barely flickered on the second run.

Dennis, the NA route will get very expensive with limited returns.  Plans are to install a turbo in a few years.  Some backwoods racers told me in 1975 to make sure there is plenty of metal around the valve seats to carry heat away and to keep the compression ratio is moderate.

What happens if I show up at Lake G with a big toothy grin and exactly the same setup as in 2013?  Not much.  Maybe 1 to 2 mph better.   

Offline wobblywalrus

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Re: Team Go Dog, Go! Modified Partial Streamliners
« Reply #1381 on: September 26, 2013, 01:08:06 AM »
Hi Mike, thanks for the compliment.  You do not want me to work on your motor.  This math stuff is what I need to master to get up to the next level.  Most of the data is printed on the time slips and all sorts of calculators are available on line.  This makes me think I am not the first guy to do this.

My new Triumph is "Clyde."  Rosie named it.  The other one is Bonnie, so she thought it would fit.  It seemed appropriate to me to considering the dent those two bikes make in my bank account.  I did not tell Rose that.  Some thoughts are best kept to oneself.

Drag coefficient reduction is the only thing I can count on from year-to-year.  There are a bunch of changes planned for this winter.  This curve realistically estimates the improvement I can get.  Note how the curve is steep at first when I made the easy improvements.  It flattens out now 'cause it is harder to do them.  The easy things have been done.  I figure I cannot get it below 0.3 so I draw the curve in a shape that will flatten out at that level.  A 0.41 drag coefficient is a reasonable estimate after this year's work is done.

The lower drag coefficient is plugged into the equation for expected speed at Lake G.  The new speed is estimated to be 145.2 mph.  I need to do more than this to get past 150.  The horsepower was increased while the drag coefficient was kept at 0.455.  It took about 8 hp to get the speed up to 145+ mph.  The drop in drag coefficient is worth 8 hp.  That is the beauty of streamlining.  It is cheap horsepower. 

Offline tauruck

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Re: Team Go Dog, Go! Modified Partial Streamliners
« Reply #1382 on: September 26, 2013, 08:00:01 AM »
It does become expensive to get those last ponies you need. It's a tough one and then you have to hope the weather doesn't interfere.

Offline fredvance

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Re: Team Go Dog, Go! Modified Partial Streamliners
« Reply #1383 on: September 26, 2013, 09:22:41 AM »
Aerodynamics is the cheapest horsepower you will ever get!! A few years ago I was with some friends in the wind tunnel, with a few minor changes they picked up the equivalent of 20-25 HP. There could not buy 20hp in the motor, it was maxed out.
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Offline wobblywalrus

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Re: Team Go Dog, Go! Modified Partial Streamliners
« Reply #1384 on: September 26, 2013, 11:49:16 PM »
Fred, my big retirement gift to myself will be to haul the bike back east to A2 and put it in the tunnel.

Right now I try to scrunch down on to the tank and the ends of my feets stick out.  Moving them to some further back footrests will keep them tucked in and I can get tighter on to the tank.  The windshield can be lowered an inch and a half without exposing my shoulders.  This reduces the frontal area and increases speed a mph.  Bigger benefits will be in lowering the Cd.

The British Customs mufflers I have now are too restrictive for a 1000cc engine according to Triumph Performance.  They are selling me a used pair of Predator Sport "mufflers."  These things will be loud.  They say I will get another 5 hp on top.  This will give me another 4 mph.

The cams I will have ground will give me another 5 hp, according to TP.  This calculates out to 153 MPH.  I was using an 18 hp rolling resistance loss for 140 mph.  The rolling loss for 150 mph is 22 hp.  It is much more and it slows me down to 150 mph.

Offline Peter Jack

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Re: Team Go Dog, Go! Modified Partial Streamliners
« Reply #1385 on: September 26, 2013, 11:55:24 PM »
You may want to check out the new tunnel in SLC Bo. The money you save in travel distance may get you there sooner.  :-D :-D :-D

Pete

Offline wobblywalrus

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Re: Team Go Dog, Go! Modified Partial Streamliners
« Reply #1386 on: September 26, 2013, 11:59:54 PM »
Pete, any info so I can find out more will be great.

The last thing is to look at increasing the tire pressures.  I try 40 and 42 psi pressures.  Using 42 psi gets me up to 150 mph.  Enough for the 150 club.

A couple of weeks ago I was a guy with no plan.  Now I have one that might actually work thanks to a laptop, Bradley's books, help from TP, pencils, paper, and hi-skool math.      

Offline Peter Jack

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Re: Team Go Dog, Go! Modified Partial Streamliners
« Reply #1387 on: September 27, 2013, 08:36:47 AM »
Sorry, it's actually in Ogden. Looks like the same fan layout as A-1.

http://www.darkotech.com/

Pete

Offline wobblywalrus

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Re: Team Go Dog, Go! Modified Partial Streamliners
« Reply #1388 on: September 27, 2013, 09:32:08 PM »
That trip to Utah sure would save a lot of gas!  Are there people there to help a guy figure out what works?  I hear that is a good point about A-2.

There are recent reference to a class structure in LSR on a recent thread.  Something about "lower classes."  Surely that does not apply to any bike folks.  We's all hi-class and we have our own racing oriented publication now.  There are all sorts of go-fast goodies listed in here, frames, engines, etc.

Powell's Books and Barnes and Nobles has it here in Oregon. 

Offline Peter Jack

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Re: Team Go Dog, Go! Modified Partial Streamliners
« Reply #1389 on: September 27, 2013, 10:19:53 PM »
Sorry, it's actually in Ogden. Looks like the same fan layout as A-1.

http://www.darkotech.com/

Pete

Sorry, I meant A-2. Old age sneaks up on me every once in a while.  :-D :-D :-D

Pete

Offline wobblywalrus

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Re: Team Go Dog, Go! Modified Partial Streamliners
« Reply #1390 on: September 28, 2013, 08:46:20 PM »
Any recommendations on a bike shipper to Adelaide for a crated Triumph?  This heap is priceless to me so I am willing to pay more for quality work.     

Offline Koncretekid

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Re: Team Go Dog, Go! Modified Partial Streamliners
« Reply #1391 on: September 28, 2013, 10:14:35 PM »

A couple of weeks ago I was a guy with no plan.  Now I have one that might actually work thanks to a laptop, Bradley's books, help from TP, pencils, paper, and hi-skool math.       

You forgot the requirement for another bucket of money!
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Offline wobblywalrus

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Re: Team Go Dog, Go! Modified Partial Streamliners
« Reply #1392 on: September 29, 2013, 01:40:55 AM »
Hi Tom.  More air in the tires is free and the streamlining work is almost free.  The mufflers will be some used ones off a wrecked bike and they will not cost much.  I have the oil and a filter in my stash.  The only things I need to buy that might cost a lot are the cams, a head gasket, and some dyno time.

Rose is talking about swimming across the Columbia River on Labor Day.  She is going to cross one of the wider areas so the current is not swift.  It is 1.1 miles from one side to the other near Hood River where she will be.  She made room reservations today so I know she is serious.  She practices almost every day and it takes a zillion laps in the pool to make a mile.  That is where I will be on Labor day instead of at 2014 BUB.  My job is to be the peanut gallery and cheering section.           

Offline JimL

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Re: Team Go Dog, Go! Modified Partial Streamliners
« Reply #1393 on: September 29, 2013, 02:31:07 AM »
Bo, that sounds spooky for a non-swimmer like me...especially after the bad deal in the Willamette last week.  Let me know if'n you want to borrow one of my Hobie Mirage kayaks to escort her across.  They are real stable, and the pedal drive leaves your hands free to assist, or take pics and videos. 

We use them in big and rough waters with no problems, and they can handle much more wind than conventional kayaks or canoes.  They also tow whatever real well (I've rescued two powerboats, one sailboat, and several conventional kayaks in offshore conditions).  I've set up all three with Turbo Fins that I modified to have much lower pitch than the production setup.  It lets you keep going for hours, easily, with better forward drive.

Daddy always said, "It takes a lazy man to invent a better way!" 8-)

Regards, JimL

Offline tauruck

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Re: Team Go Dog, Go! Modified Partial Streamliners
« Reply #1394 on: September 29, 2013, 08:27:02 AM »
Go Rose. A mile across a river is no joke. Wish you all a safe trip.