| Author | Message | ||
     Rocketman |
ok so it did the wheelie - do you know that the GSXR is or isn't more aero in the wheelie position than the 'Busa? What do you think? Rocket | ||
| Steveshakeshaft |
OK, the laws of Aerodynamics go something like this- "The drag increases at the square of the speed. To overcome the drag the power increases at the cube of the speed". Put another way, this means that if you double the speed, the drag quadruples and the power required increases by a factor of 8. You can see quite clearly then that when we are talking high speeds and aerodynamics, that it is perfectly possible for a lower powered but very aerodynamic object to get to speeds that a higher powered but lesser aerodynamic object cannot acheive. I hope that's a useful contribution. | ||
| Scott_in_nh |
What do you think? I think you came to the right conclusion, but used a faulty argument to get there. | ||
| Moxnix |
Theoretical LSR motorcycles set theoretical records. Virtual racing is like virtual professional contact sports. The sensation of emotion is the reward and your body still works when you're over 50. "Glory is fleeting, but obscurity is forever." -Napoleon Bonaparte (1769-1821) | ||
| Court |
Well said. That is PRECISELY what spawned TEAM ELVES when the Moto Guzzi and BMW folks became a tad mouthy about the Buell. The experience, data and information I've alluded to above comes not from my academic books but from little pieces of paper with the time stamped to three significant digits and signed. What is cool about theory is when a very talented engineer, I know one in Colorado, can develop a series of algorithms dealing with aerodynamics, horsepower, altitude, wheel spin and whatever and refine the equation to the point where he can predict within 0.1 where a run will be with pretty amazing accuracy. There are always a group of "woulda coulda shoulda" until you get to the awards banquet. Landspeed Racing is the ultimate put up or shut up exercise. Snail has perfected it and reduced it to 3 steps. Something like, build bike, race bike, haul trophy home. Easy to take shots at until you see the trophies. | ||
| Rocketman |
The experience, data and information I've alluded to above comes not from my academic books but from little pieces of paper with the time stamped to three significant digits and signed. Which is all well and good when you speak of your favoured Buell, but such comment is woefully misleading if on the other hand you say [you were] under the impression, mostly hearsay, that stock Hayabusa bodywork is not that slippery. [You] have no data on it. Upholding the RR aerodynamics might well be honourable from your stand point, but doing so by using a timing slip is no proof that one design is superior over another when other deciding factors are possibly at work amongst other machines that were not as successful on the same course on the same day as the RR was. I didn't come here to bench race anything. Nor did I come here to put down the Buell design of some vintage. My attempt was to show how careless it would be for someone to rule out the use of for example a Hayabusa type design of bodywork or associated parts based on for example a few Hayabusa's of 200 or so HP having a poor showing at Bonneville the same day a very highly tuned fuel altered RR had a good day. Such too is not helped when one offers information based on hearsay on the one hand, and supposed facts on the other. Rocket | ||
| Moxnix |
Hemmingway said mountain climbing, motor racing and bullfighting were the only true sports; everything else is just a game. LSR takes care of the motor racing, this forum handles the bullfighting. As for mountains . . . | ||
| Isiahstites |
Update: I bought a set of clip-ons from Kent Riches that I think will work out pretty well. All of the parts for the motor arrived last week and almost all of the machine work on the case is done with the exception of the upgrade to the anti-rotation pins for the lifters that I will do next week some time. The motor is going to Bob Moreland in a few weeks to have the line-boring and balancing done.  [/IMG] I had doneStage 3 headwork which includes NRHS Hurricane valvetrain components: bronze manganese guides, high flow stainless valves, chrome silicone springs, and special radius titanium retainers. The valve sizes on my is a 1.940" intake and 1.615" exhaust valves. A 30 degree squish badn was cut along with dual plugging of the heads and .700 lift springs.    S&S Roller Rockers  Here are the pistons from that we ahd made from CP.   Jims Hydrosolid lifters  Jims 3 hole crank pin  S&S Super D and the 4' airhorn  New clutch and pressure plates  S&S intake  Hi-flow oil pump  Axtell cylinders  Adjustable push rods, new high strength, crank pins, push rod tubes and misc bearings.  Here are the new Redshifts Cams  The camchest was clearanced to fit the bigs cams  Cases have been bored to fit the oversized cylinders  | ||
| Isiahstites |
I had a few things happen in my favor this week and it looks like I will be attending the World of Speed event in Bonneville in August so it looks like I need to kick this build into high gear. I spent most of today at MDR turning down my rear wheel hub so I would have enough clearance inbetween the frame and the sprocket/chain. Intiallt the chain hit the frame, with Randy of MDR mentoring I turned the sprocket side down .300 and the disc side .200 and as you see in the pictures it looks like everything is going to be perfect. We used a dial indicator to make sure the wheel was centered on the radius cutter attachment of the mill.  Once centered the cutting can begin........this is the sprocket side after .300 later.  A picture of the wheel mounted on the radius cutter on the mill.  Here is the axle cut to length. The top axle is a stock Buell axle and the second one is the shortened one and the amount that was cut off below the second axle. Randy N. bored out the center of the nut and turned down part of the axle and slid the two together and tig welded the two together.  Here is my new clearance on the sprocket side.  Here is my clearance on the disc side.  I sent my cases to NRHS and they are balancing everything as well as assembling the bottom end. | ||
| Isiahstites |
I have been working on the rear brake bracket................here is a picture of the stock one which is way to wide to use in my chassis.  And the begining of the new one  Chucked up and ready for drilling  Holes drilled and one screw hole tapped  Welded this threaded coupler to the bracket after I tightened it down and the screw passed throught the bracket and the coupler to insure the threads were in time with each other. ( I think that's what you call it)  Here is the completed bracket  The other side  With the caliper mounted.......I may not use this bracket as I ran into a problem with the clearances for the rotor because this is a floating caliper. I need to spend a little more time on it to correct the problem, however icould easily make another bracket in a short amount of time and use a two piston caliper and that would solve my problem. I am going to look at other options later for the rear brake. I really need a break from working on the brake!  Oil tank is installed along with the battery box.   | ||
| Isiahstites |
Been a busy weekend! I got my spare motor put in so I could line up the rear sprocket and figure out the offset needed for my trans sprocket. All of my sprockets are on order and being made at PBI. Had my heads flowed and was pleasantly suprised to find out that the motor has the potenial to make about 133 hp if I can tune it and build a good exhaust system. Got lots of parts ordered and on the way. I have about 30 days left and it is going to be close. I hope I can make it............ Got the footpegs and shifter completed.  Grinded, shaped, drilled and sandblasted peg mounts.  Mounts welded on.  Shifter rod was made of aluminum stock. I drilled and tapped the ends for the heim joints.  Motor mount is almost complete to include a mounting location for the two Dyna coils. The coil portion still has alot of work as I need to trim the piece down once the thread bungs are welded to the plate.  Another view of the motor/coil mount.  Got my new grips put on and the clip-ons in what I believe are there permanent location.  | ||
| Isiahstites |
The cases will be back from NRHS tomorrow afternoon with the bottom end assembled and fresh off of the balancing table. I hope to start final motor assembly very soon. Finished up the coil mounts this evening and took the bike off of the lift so I could check steering clearances for the steering dampener and stops. I will start on both of the items tomorrow.   The bike off of the lift measures 36 inches to the top of the triple tree.  | ||
| Isiahstites |
My motor came in today from being balanced with the bottom end put together.  Here is the steering dampener I bought it is off of an 06' Suzuki GSXR and some angle iron to make the bracket to hold it to the frame.  Here are a few shots of the finished bracket.   Here is the bracket welded to the down tube.  And a few shots of the dampener mounted to the bike.   | ||
| Blake |
Nice welding. Nice steering damper too.  | ||
| Isiahstites |
Stopped by Mr Riches shop Thursday and picked up my front fender. I found the gas take in a motorcycle salvage yard. The tank is off of a 1975 Yamaha DT 100 and with a little work it should fit perfect. I am going to cut off the rear mount and re-attach it to fit the backbone of the bike as well as change out the petcock for a Pingel Race petcock.  Picked up this Thunderheader this morning for a $100, I have been watching these on ebay and they have been going for over $350 used. I ordered a collector, megaphone, a bunch of u-bends and tubing yesterday to build an exhaust, but the Thunderheader will get me running incase I run out of time.  I finished the brake bracket with the exception of the brake stop which will hold the bracket in a fixed location. The stop will be welded to the bottom of the frame rail and connect to the bracket and will be adjustable to match the axle blocks.  Lots of parts have been coming in there just isn't enough time in the day!! There are two things I am running short on.............TIME AND MONEY!!! I have 24 days left until we leave for Bonneville so the pressure is on and it is going to be tight on time to finish the bike. If I don't finish it by August 7th my first race will be Sept 16th at El Mirage. Scott | ||
| Bluzm2 |
Very nice work Scott. Exciting isn't it! You ain't seen nothing until you get there! Brad | ||
| Isiahstites |
Finished up the brake and stop this evening..........I think I need a new rotor this one isn't exactly straight. I didn't realize it until I spun the wheel.  I also got all of my exhaust components today, a 5' section of tube, 4 4" radius bends, 4 3" radius bends, two into one collector and cone. I'm not sure when I will do the exhaust and I think the 3" bends are a bit on the small side, but I won't know until I start building.  Scott | ||
| Isiahstites |
[QUOTE=jamming;43330]Scott, real nice. Keep the faith brother. Your making good progress.[/QUOTE] Thank you Jamming! Well I have managed to shed off what was almost a burn out on my part from putting to much time into the bike. I have paced myself and feel like I get more done by just stopping when need be and come back at it fresh another time. I had to cut off the axle block adjuster and step it out to match the width off the brake bracket.  Here is the offset ready to welded in place.  Finished  Got all of the final wheel spacers cut and installed as well as the axle adjustment spacers.  Drilled a hole in the gusset for the steering stops  Here is the solid rod that will be used for the stops.  Getting rid of the sharp edges.  In place and ready for welding.  Finished  Now onto the tank mounts, here is what is on the tank.  Here are the brackets that will hold the rubber grommets in place.  Starting on the rear mount.  Finished rear mount.  Side view of tank mounted in it's final resting place.  I will get back to work tomorrow and hopefully start on the tail section which may be modeled after a sportbike tail............I will just have to wait and see until I get out there as I have ideas I am just not sure if and how they will work. Scott | ||
| Isiahstites |
Started to build the tail section today............I spent the better part of the morning into lunch time just starring at the bike and holding up different pieces of tubing at different angles until I found something that was functional yet not completely ugly. Finally this afternoon I figured it out and went to building.  Notching the tubes with my cheap Harbor Freight tubing notcher.  Here is the first support with a 0 degree notch on one end and a 45 degree on the other.  Check to see if it fits.  The hard part is making two identical pieces.  Ready to be tacked.  Tacked and adding a cross support.   I will finish the welding when I tear everything down. I am pretty pleased with how the tail came out with the exception of how long it took.    | ||
| Isiahstites |
I have just about finished up the tail section with the exception of permanently attaching the seat pan and the number plates. I have had a few days to look at the tail section and I think it is starting to grown on me..........   Here is the stock petcock that came on the tank  I enlarged the whole for the new bung to welded in place to fit the new petcock  New bung in place ready to be welded along with the two screw holes for the old petcock. Here is a similar Guzzler Valve from Pingel that I borrowed from Kent until my comes in next week.  I started to try and make the Thunderheader fit and after some thinking I decided I was gonna go ahead and attempt my first set of pipes due to the fact that I spent so much money on the heads. I measured the I.D. of the TH and it was 1.594 and my piping is 1.76 so the bike should breathe a lot better the exhaust I build.   | ||
| Isiahstites |
Finished the exhaust today..........    | ||
| Firemanjim |
Isiah, are you using a 520 or 530 chain? I have a stack of 520 sprockets I am not using now as I went to 530 with the bigger turbo. | ||
| Isiahstites |
Jim I am running 520 chain. thanks, Scott | ||
| Isiahstites |
Finished making the front fender brackets as well as trimming, mounting and painting the fender. The brackets were made out of steel strips I cut out of a scrap sheet I had lying around. I welded some round tube to the strips to offset the bracket out passed the fork leg and then bent it back in so it would go around the leg to the mounting location on the fender.   Here is a pic of the finished fender mounted on the bike.  | ||
| Rasta_dog |
Beautiful job! I love the exhaust you made. I was at Mid Ohio this weekend, and had a vision of making a "Thunder Header" type exhaust for a Sportster project with a kinda 60's-70's racing style dual mega phone stacked exhaust pipes. | ||
| Isiahstites |
I finished up the chain guard last week.  The bike has been tore down and final welding complete.  Gas tank is back from welding as well as the exhaust.  I have some minor work to finish on the exhaust. I need to finish the flanges as well as remake the rear mount and weld on the spring tabs to hold everything together for the slip-fit portion.  MDR turned down my 530 front spocket to a 520 sprocket.  Frame, front end and a lot of other parts have been painted and are ready for assembly.  Seat pan has been painted and riveted to the chassis.  This is where I stopped last night around midnight, I still have a lot of work to do and I will be hard at it again today. Scott | ||
| Isiahstites |
I got all of the places that take a gasket prepped and cleaned as well as got the motor painted.  Squaring the piston ring so end gap can be checked.  Piston ring gap.....  This evening after I finished with end gapping I tried to put my pistons on the connecting rods and was not very successful. Turns out my pistons are only .002 wider than the end of my rods. After seeking advice from several experienced friends I decided it would be best to have the pistons clearanced professionally. I believe this is the item that is going to keep me from finishing the bike prior to Speed Week due to the fact that I still had some minor fabrication to do to the bike that needed the motor to be in place. Scott | ||
| Firemanjim |
Isiah, I have a pile of 520 rear sprockets if you are interested as I swapped to 530 for the new turbo engine.Have about 8-10 different all the way down to a 36 IIRC.Make you a screaming deal. | ||
| Unibear12r |
Lots of good looking work. Good Luck! | ||
| Isiahstites |
Despite the problem I ran into last night with the piston I kept chipping away at it today. I put the new motor in and set the barrels and heads on so I could check clearance for the petcock to the motor mount and so I could finish the exhaust flanges. I did find the petcock is going to hit the front rocker box so a simple spacer in between the back bone and the tank will solve that problem.   Front fender installed  I got the brake mount and stop painted and installed. I had to re-space the brake caliper as I took approx another .020 off of the brake side hub of the wheel and turned down the rotor to make everything straight and true. Also pre-drilled all of the holes for the number plates and will pick-up some 1/4 20 button heads screws tomorrow.  Got lots of parts painted and ready to be installed.  |
