Bonneville SpeedWeek 2016/World of Speed...Cosworth Electronics Testing

Mike and the Bullett

2016 and the Bullett heads for SpeedWeek: Mike Geokan and his creation 24 years after conception. Now it's 2016 and, one day after a serious operation, 100 pain pills in the trash, Mike's checking the Bullett, which is headed for Bonneville to test the revamped engine with new Cosworth Electronics, fly-by-wire throttle, 8800 parameters, and electronic phase anti-phase boost control...Headed for the real Dyno, the Great White Dyno, for testing. Mike stays home to spit nails at the wall.

Cosworth Pectel SQ6M Injector Flow Calibration

Here we do an actual flow test of the Injector Dynamics ID2000 fuel injectors on the Cosworth Pectel SQ6M Simulator at 3 Bar and 6700 RPM to verify we have exactly 500HP worth of fuel. We do. We have no intention of melting the motor down. The ID2000's are perfectly matched. We'll dial in a rich fuel curve to start with, then lean it back after our first run. The loads at Bonneville are motor killers.

Why Complexity?

Cosworth Pectel SQ6M Engine Management Controller. Cosworth engineers were probably thinking of quad-cam V12's with 48 valves and dual Fly-By-Wire throttles when they designed this puppy, and not a pushrod V-Twin with two valve cylinder heads. It's perfectly at home however, and can control anything, including wheelies...Not that we are doing wheelies with the Bullett on the Bonneville Salt Flats.

Why? It's just the way things go these days at Bonneville. If you do not have traction control on the thin salt  that is maybe 1/2" thick and is loose, wet, bumpy etc. you are asking for disaster.

Many of the high horsepower motorcycles have crashed when the have overspun the rear wheel. If you don't like the thought of getting tangled up flipping down the salt with a 1000 lb object then traction control...the same control strategy as the Speed Demon and Ralph Hudson and others use, then traction control is a mandatory.

The other issue is electronic closed loop boost control by gear, by rpm, and speed so you can maintain control during the, what is essentially a drag race, trip down the salt. No more twisting a dial a boost pneumatic controller.

Between the wiring, the electronics, the sensors, the programmng and calibration figure on $20,000.00. For the Motec crowd hire experts like Shane Tecklenburg at $1,200.00 per days plus software calibration packages and all the hardware.

We just do it ourselves. The days of Rajay turbos and draw through carburetion are long long gone.

Two Bills

Last second change of plans. Brother Speed's "Two Bills" Bill volunteers to tow the Bullett Race Trailer with his Ford Diesel and head to most harsh, hot, eye-fying environment...the blindingly bright Bonneville Salt Flats, in spite of a serious eye infection in both eyes. Eyes swollen and beet red. Hey, whatever it takes. Ex Hard Hat Navy diver and a life of working in extreme big deal.

"Two Bills" Bill right. Mike Geokan center in his usual cheerful manner. Halt Hennig left. Walt hauls the Rhino on the tilting trailer we use to retrieve the Bullett after each run at the Salt Flats.

Ride to the Salt

Bryan and Nick Stock ride their chopped Dressers from Boise to Wendover with stops at Wendell, Jackpot, and Wells before the final push to Wendover and the Bonneville Salt Falts. Was it hot? Well, not in the air conditioned trucks, but on the Harleys it was searingly hot. Who rides out to race a bike at Bonneville . No one except Bryan, Nick, Mark and Brother Speed. Rolling Thunder.

Pits Bonneville Salt Flats

Before you can move in and set up your pit you have to go though the complete registration process with the SCTA-BNI which includes a vehicle technical inspection i.e. if you aren't legal then you don't set up a pit. Bring all sorts of money and medical forms. Actually it's the cheapest motorsport on a fee basis you will ever find.

Maintenance after spark plugs, battery charging, cleaning salt off the intercooler, reprogramming the Pectel SQ6M engine controller and making safety checks before you put the bike back in the line.

The salt and track conditions were really bad with ruts in the soft salt...akin to high speed slaloming on snow with the occasional rut that took Bryan on an unplanned journey from the right side of the track to the left side of the track at 190 MPH. Hey, we came here to test the systems and the track wasn't going to be a 250 mph hard surface with good traction. The car guys came up and said you must have to have the biggest balls on the planet to go 190 to 200 MPH  on two wheels on this track given the conditions. Many car guys went home after one run. Even the offical that dragged the track damaged his car on the rough course.

Brother Speed's Mark and Shane button up the Bullett for another run. The canopy must be removed for spark plug access. Bryan can sit in the air conditioned cab of Walt Hennig's diesel truck to avoid roasting in his leathers.

Mark secures the "Alligator" pad that Bryan rests on at speed. Beneath it are 3/8" thick aluminum plates. The whole Bullett weighs 1000 lbs.


Casey cleans Bryan's face shield. Better in the pits than on the start line.

Red Bull at Bonneville

Way more than 30 years ago we used to say when racing... "The only women you are going to see will be tacked to the wall with the staples removed"...Bonneville is the new exception to this rule.

Tailgate Party...hold the Salt.

Crew food while we are waiting in the line.You wait a long time at the beginning of SpeedWeek and, as the days go by, and people leave or blow up, the lines get shorter. This day it was a long wait.

Mark and Walt...Sometimes there is a spin on the course, a blown motor and debris on the track, or even the wind comes up too strong and everything is put on hold. Time to look at interesting iron.

When you get six to eight vehicles from running, we unload the bike and keep advancing it in the line. If you aren't ready when you are supposed to be it's back to the end of the line. Notice the exhaust burn on the fairing.


You are the show at this point. The whole Bonneville world stops for you to do your thing...Isn't that a bit strange in todays world?..i.e. People politely waiting for you to have your moment without intruding.

George: Lawyer..Vintage Bike Club President, Racer, Bullett Starter

George, in the white uniform, absolutely loved the Bullet and we asked if he would like to be our engine starter. That involved actuating the solenoid when all electrical systems were armed and it was time to race. Bryan would give the nod and George would start the Bullet. Like all racers he did his job perfectly. Try that at Indianapolis or F1. Class act.

I was going 190 MPH and the bike went sideways!

Course on hold and Bryan discussing Bonneville adventures with a Red Hat 200 MPH Club Member.

Off the Salt Adjustments

We took the Bullett back to our $3,500.00 worth of motel rooms in Wendover to get beer and make adjustments to the Cosworth Pectel SQ6M Fly-By-Wire system after our second run, during which the throttle went into failure mode which was programmed for a 14 degree fixed opening, a fast idle.

If you make assumptions you may turn out to be on the ass end of things. We assumed two Bosch 60mm FBW Throttle bodies would be the same. They weren't. In that the Pectel SQ6M FBW system has 167 programmable functions there are all sorts of safeguards built in. Small variances in the dual potentiometers caused the throttle to close.

Simple fix if you know how.

For Tomorrow We Die

Eat Drink and be merry for.....Party Time. Ask the crew if they donate money each month to Hillary Clinton's campaign...massive hissing...Fools. Politics and racing are different. FOX News and Russian social media trolls take their toll on this country.

Back on the track...Fly-By-Wire reprogrammed..194 MPH

At 5600 RPM the rear wheel was going 260 MPH and the bike was 194MPH on the GPS Speedometer. Bryan was all over the track in and out of the throttle, throwing roostertails of salt. We were running the Pectel SQ6M programmed boost control which targets specific boost values by speed, gear, and throttle opening. Here the bike hit or programmed 2.3 Bar or about 19 PSI of boost.

We made two runs where Bryan hit over 190 MPH but the course was rutted and there wasn't much in the way of traction with Bryan plowing through soft salt and bouncing through the ruts at these high speeds. The ruts would take him all over the track. We learned a lot and have ample power, in this case, about 380 HP @19 psi and 5600 RPM.

Nothing was hurt and we wait to see if the next events will offer a better track.

Back in Boise...Clean Up

Back In Boise at the Brother Speed clubhouse. Hoses and pressure washers with various openings like the turbo masked off. Shane and Bryan washing the Bullett.

Shane...working his ass off at Bonneville and also back at the Brother Speed clubhouse. The Salt eats everything. It's slowly been eating the trailer but we're still good to go.

Bryan blow drying the Bullett with it resting on the Mike Geokan designed winches that elevate the bike and keep the tires off the ground.

Ready to roll at the next event with the Pectel SQ6M Seven Position Traction Control fully implemented.


Red Vehicle Pass for Pits. Red Arm Band for Crew. Only one yellow arm band. Button for Crew. And a stack of credit card receipts.

Poster Seen at Wendover Post Office

Nick Arias III (Arias Pistons) was an official on the starting line. He said we seemed to be having a lot of fun even getting ready to run. We did. Brian has the yellow arm band and that got him the best seat in the house at 194 MPH. It's all Rock N Roll.

Big Dogs, Factory Dogs...Big Money Nonetheless

Poteet and Main Speed Demon. New car after crashing the first one. 420MPH. Tufts on tail were photgraphed at 400 MPH...The aero worked. Kenny D and Shane T.

Probably the only car that can possibly hit a wheel driven 500 MPH. Four Wheel Drive  4,000 HP Turbine. The late Don Vesco went 458 MPH...Sorting it out this time.

You take the smallest bike...add the biggest, bravest, Japanese rider you can and hold the throtte open with over 300 HP. Jon Amo worked with these guys from the Kawasaki Factory donating lead bars and lead shot as ballast trying to find traction.

Tiny 3 cylinder motor. Honda Factory effort. The rising sun near where the Enola Gay trained. Time Time Time...Honda is a racing company.

2016 USFRA World of Speed 10-13 September

Headed for USFRA tech inspection.

USFRA Photographer stopped by while were waiting in line to tell us how much he loved the Bullett. Hand made craftmanship in the Bonneville tradition of Sir Malcolm Campbell and others. We also had a couple from Geneva Switzerland stop by...Heard the wife speaking French so we asked in French if they were French..."Non, nous sommes Geneve"...Heuresement nous parlons Francais. Small world. Genevois a Bonneville.

As you near the start..Here we are about 8 vehicles from our turn..We unload the Bullett. The trailer tilts and Nick Stock sits on the Bullett while Matt Torres guides him down the bike ramp.

Sunglasses and sun block. Bullett headed for the Long Course which is timed between the 4 and 4 1/4 mile. By the 5 mile marker you were supposed to be shutting down and there was only a drag as far as the 6 mile. The salt was thin, but hard, and there were some muddy spots where the salt had broken through. Bryan and Nick Stock drove down the course to take a look at it.

Monte, the USFRA starter, asked all competitors to drive their passenger vehicles and trucks down the course before the actual meet started. The idea was to let people decide if they were going to run at all and, most likely, what plan of attack they would have on the course.

Nearing showtime. Umbrella to keep the sun off the Bullett's seat.

Time to roll. Nick Stock sinches up the D-rings on his dad's helmet. Blue arm bands are for crew members. Shane and Matt keep Bryan and the Bullett in the shade, and Mark secures Bryan's leathers. Mark starts the bike when were are given the go.

On hold at the start as the three mile timing light malfunctions. There was a long wait in the hot sun in black leathers and a helmet. Way, way, long.

Crew members like Mark, Shane, Bill, Matt, Wino, Casey, Nick, Diana and of course Bryan, the Bullett's driver...all leave things on the plate to go to Bonneville...bills, obligations, relationships, shutting down businesses, skipping medical appointments and so on. Alternate reality in a strange land. Brother Speed.

Bryan was about medium rare in the long wait, so we had him remove his helmet, and a cold towel to his neck to cool him down.

161 MPH, Third Gear, Salt Good, Watching the GPS and Tach, accelerating..Then

Bryan was accelerating in third gear at 161 mph, settling in to attack the 4 to the 4 1/4 timing lights, and he heard a loud noise and felt a loss of power so he vectored off the course slowing to 80 mph with the engine still running. He stopped and the engine was idling at our programmed 1300 rpm and a USFRA Course Official pulled up and saw oil coming out of our rear breather vent and told Bryan to cut the motor.

Back in the pits Bryan started to pull things apart to see what was what. We pulled the spark plugs and they were OK. We then checked compression in front and rear cylinders and it was 175 psi in both.  Next we checked our four top end breather lines and they were dry. We then checked the dry sump oil bag and it was nearly empty. Bryan started dissecting the oil pump as there was no scavenging and our jackshaft driven vacuum pump pumped the oil out of the lower end.

Bryan removes the S&S Billet Oil Pump after finding some unknown debris in the bottom of the camcase.

Oil pump removed with damage to the gears and shaft. One scavenge gear cracked when it injested something. Brass valves and fittings are part of the jackshaft vacuum pump setup. Visible are the watercooled cylinders. Stainless steel merge collector to the turbo with ceramic coating. Jim's Fat5 transmission.

Guilty Party

This circlip on a seal from the second bearing on the Pinion Shaft facing the cam case came off and took out the oil pump, shearing the key in the drive gears. The lower end filled with oil and slowed the motor and our vacuum pump, driven by the jackshaft, pumped the lower end out the back. Stupid fkking bearing that was put in won't be going back in. No way to fix this. Motor has to come apart and a more logical bearing be installed. Shame because we had a workable race surface due to all the work by Monty and the volunteers of the USFRA.

 This is the Bullett's jackshaft-driven vacuum pump which is connected to the upper and lower ends of the 139" motor. It kept pumping when the the S&S Oil Pump drive keyway was sheared. Hard anodized to keep the salt from eating it. No debris got to it.

Nothing to fix so we headed for the Hotel rooms for beer, Vodka shots, controlled substances, and a Buffet Dinner. Planning for 2017 begins. It was a good time nonetheless. Great people and friendship. Another adventure and no one went to jail in Elko this time. Bryan came home safe which is the most important thing of all. People have died there recently.

Errata...147mph bicycle

Errata...Old School

Artifacts Circa 2016

Lucky Buck, 1 Free Drink, Vehicle pit pass, personal pit badge, crew wristband, pile of credit card receipts....stuff for the archaeologists to figure out the religious or ritual significance of in the future. What motivated these people to travel to this desolate location and give offerings to some strange deity? What secret rituals did they perform and where did they come from to begin with? No bones were uncovered. Where were their dead buried?...All questions which are unanswered. They seem to have come from many directions. How did they communicate to arrive at the same time each year? Were sacrifices performed ?....They left straight blue lines leading to a floating mountain.

Post 2016 Bonneville: Time for New Tires

One set of these Goodyear LSR 300 MPH tires was used for the construction of the Bullett. They became weathered during the long build process and were cut in half for close inspection of the thickess of the rubber at the request of Nate Jones Cowboy Tire. Shaving excess rubber was done by Nate Jones to balance and prep the new tires and to round the front tire for better handling. This second set was used for the initial running, gaining licenses for the Long Course, and setting a 200 MPH Record that stood for 5 years. After spinning the rear tire at over 260 MPH, bouncing through some deep ruts at 194 MPH, and plus the effects of weathering, we decided to put on new rubber for safety reasons. You are looking at $1650.00 worth of new rubber. Our third set. Does get expensive.

The Bullett is about the only long course (>175 MPH) motorcycle that actually has legal tires in the eyes if the SCTA-BNI Bonneville Inspectors. There have been crashes at Bonneville due to tire failures, and numerous instances of tires chunking with Z-Rated tires running well over 200 MPH. Motorcycles have crashed and people have died in other Speed Events...Perhaps with tire failure as one of the factors.

Mike Geokan, some 24 years ago, made the decision to design his Bullett around tires that would be safe. He had no guidance and he was on his own. He was proved to be correct. 45 degrees of rake, a stiff chassis, a long wheelbase, and safe tires to bring the rider home alive.

Bullett Pistons

When you stick a 560 Hp turbo on the 139 CID Bullett Orca Motor the pistons, piston pins, and rings get subjected to a lot of heat and pressure. A lot of people ask what we run and here are the specifications: CP Pistons 4.367" for a 4.375" Bore; Top Groove 0.064"; 2nd Groove 0.064"; Third Groove 0.149". Flat Top with relief for the 2.200" Inlets and 1.800" exhaust valves; 0.927" heavy wall pins with 0.073" wire locks.

We cut the skirts for clearance and ceramic coat the piston tops and graphite coat the skirts. Ring gaps are 0.026" for the Top Ring and 0.028" for the Second Ring; Std 3 piece oil ring. No cylinder head gaskets or base gaskets with Silver-plated Inconel 600 psi Nitrogen seal rings on the cylinder heads. We have even run PEEK Buttons on the skirts. Drop $2,500.00 on the pistons...and more on the machining and coating. We have had zero issues running high zinc content Brad-Penn Oil.

The 139" Orca motor has been used as a test bed to experiment with new technologies...electronics, closed loop boost control, traction control, bearing designs, piston sealing, vacuum pumps, ceramic coatings, high temperature valves, cylinder head porting, camshaft design and more.. Somethings have worked and somethings have failed. It is definitely not short on power as Bryan Stock can attest...His first words after a 214 mph run...."I want one of those in my Dresser!".