Turbo Orca FXR..Ultimate FXR
Fuck CVO Worship
A stock CVO2...not ours...just a photo we found...same paint though.
FXRs and RB Racing
A number of years ago we picked up a CVO2
FXR and put on some old custom paint we had...You know keeping things
stock is illegal and we sure as hell don't worship this "CVO" business.
We put on a different seat and got rid of the shorter, stiff as hell, shocks and some chrome side covers we bought from Elvis. We kept the bike's motor stock and put on one of our 00-1010 B Style
exhausts and our RSR Closed Loop Fuel Injection.
Way before this we had a Shovelhead FXR
that Carl Pelletier of Competition Motorcycles had loaned us for
product development. We used it
for carburetor and exhaust testing for several years, like developing
the 41mm FCR carburetor
for Keihin Corporation. Then one day Carl called us up and asked if we
still had the FXR as he had a buyer for $10,000.00. We gave it back to
We also had a 1987 FXR that we used for turbocharger, exhaust and camshaft development but we eventually pushed it into the corner and then sold it.
Funny story. We let a Yamaha XS1100 owner
ride our 1987 Turbo FXR and he came back saying he was surprised at how
well it handled, even when it was dragging things, but that "It seemed
flatten out around 9000 RPM"...flying over the Vincent St. Thomas
in San Pedro. Ouch! ..It sounded a bit rough when he brought
it back..Pieces of piston rings were coming out the exhaust. The Branch
heads had bits of rings embedded in them.
We should have kept it but we needed the money. Enter the CVO2 pictured above.
Another FXR we got involved with. Read about it here. Harley Davidson and the Marlboro Man bike. FXR's or Die as Elvis says.
The ultimate FXR for some...not for us.
CVO2 Round Two
We got bored with the former CVO2 and its
gallon gas tank so we adapted an FLHX 5 gallon tank, painted the bike
and changed the wheels. We also converted it to chain drive and got
rid of the 21" front wheel that we never liked and adapted a 19" Dyna
front wheel. We got rid of the shorter rear CVO rear shocks and put
on 13.5" shocks for better ground clearance and a Dresser rear
Result: It handled better, we could drive further without looking for a gas station and we got 56 MPG. We ended up putting in a 24 cell Lithium Battery as it held at 13.3 VDc even after siting for a month, and had less of a voltage drops in cranking, which gave it much better and quicker starting. EFi simply hates voltage drops...Anything below 11VDc and the fuel pump output declines drastically. We still left the engine stock...no cams.
We added our instrumentation consisting of
our digital Orca Bonneville Tach, GPS Speedometer , Digital Gear
our Dual RSR Air Fuel Ratio Gauge. The 5 gallon tank gave us a 200 mile
range under closed loop efi. We left the tank and fenders with a
painter and he came up with the copper/bronze color.
Everyone drove the bike. It was sort of
quick, mainly because it was about 300 lbs lighter than a Dresser and
it had instantaneous throttle response with our 56mm RSR EFi. Then we
got locked into Bonneville, advanced Cosworth electronics and the
Bullett. There was no time to work on the FXR. Racing eats all your
Bored Again... due to the 8228 "Bonneville Bullett"
Well, we spent a lot of time and money
setting records at Bonneville and since the late 1980's and we have
Intercooled ORCA Turbo Motors and fuel injection technology...Over 400
HP on long course at Bonneville.
Once you ride the Bullett you don't want a stock 80" FXR anymore. The
Bullett occupied all of our time and money and any development on
the FXR ground to a halt. FXR, the Stepsister.
Men in Black....
When you spend more
than 40 years...
Holy Shit where did the time go!... working on and designing high
performance motorcycles and equipment, spending untold thousands of
hours, and more late nights and lost weekends than you can imagine, a
of people get dragged into the Vortex. A large cast of characters, both
good and bad, from many continents, have at one time or another hitched
a ride on the RB Racing Express...and then faded away. Once the party
starts they show up and once the party is over they head for the door.
Something about not living with the consequences, or just being
practical, whatever that is.
These days the Vortex tends to draw in
ones that can stay the course and whom you can reasonably expect to be
where they should be, do what they say they are going to do, and be
honorable enough to step up no matter what the consequences are. They
tend to be dressed in black for practical reasons.
The Bullett has
been a test bed for ORCA Engine technology and it's complexity is way,
things we have done before. It has forced us to confront engineering
issues and learn new disciplines. 1000 lbs, no higher than your waist,
45 degrees of rake and over 400 hp with a 560 HP Turbo.
Only designed for Bonneville, it is the ultimate pushrod motorcycle and is a handful to ride until it settles down around 100 mph. Geared for 300 mph @6500 rpm it is not something you putt around on...but once you've driven it, you want that kind of power and sophistication that you can hop on anytime...like a lightweight flickable FXR.
Why not take the Bullett's ORCA Engine and control technology and put it into an FXR...Screw the stock 80" CVO2.
Round Three...Come Up with a Plan
Since we've been around for awhile and have a long memory for things we are interested in, and since we had spent a lot of time at Camber Fairing in 1977 with Jerry Greer working on our 1977 Bol D'Or Monoshock racers, we knew Jerry had been involved with Don Vesco and his Rabid Transit fairings that were marketed for a few years to the BMW and Jap crowd. We tracked one down and adapted it to our FXR before we stripped it down.
Why? Simply because around 180 mph, and
faster, the wind gets a bit fierce and you need a frame
mounted fairing that is wide enough to get your shoulders
behind...The Rabid Transit fairing is a hand-laid, sturdy piece because
his craft. A very sophisticated aero design that gives good
protection...Way better than an FXRT fairing. Get down on the
tank and look over the fairing's edge.
We fabbed up these mounts and had them powder coated. They bolt to the steering head and frame.
We welded up a set of stainless handlebars prepared for our 60mm Bosch Fly By Wire Throttle Body. No available bars will fit... they have to be made. Your hands are out of the air stream and the bars go full lock staying inside the fairing.
Bye bye to our previous FLHX 5 gallon tank...She was too wide for the Rabid Transit fairing. We only have 1/2"clearance side to side with the smaller tank. We'll get the lost 1.5 gallons back another way.
Cosworth CDU Dash
Our handlebars are not stuck up in the air
like the "Ape Hanger" style bars
everyone else has come up with when they try to make fairings for FXRs.
The bar arrangement pictured above comes from Big Bear Choppers. You
remember them from their previous Chopper ventures. They were going to
put Harley out of business. They folded shop...now they are making FXR
We are go fast racers, not cruisers,
and we don't need to show the world our armpits.
Strip Her... Show No Mercy
Take her down to ground zero. With ORCA
Turbo Power and Cosworth Pectel SQ6M
Electronics all the stock stuff has to go. Pull out the 80" EVO and
it to the Men In Black, replacing a worn out RevTech motor.
Since it's all apart take the heads down to Branch O'Keefe so the Men in Black get a good breathing EVO.
Off to Dr John's Motorcycle Frame Straightening
Next : Take the bare frame down to Doctor John's to have it checked for straightness...If you put 300 hp to the road the chassis better be straight. It wasn't.
FXR Frame Blueprint
It all starts from known dimensions...FXR frame blueprint above. You have to have a frame table that has fixtures that will locate the centerline off of the neck and the swingarm pivot block locations. Rubber-mounted Harleys have special alignment procedures as the engine transmisson and swingarm do their own things.
Back from Doctor John's...$500.00 worth of
tweaking to get it perfect. He's the go to guy for chassis alignment
repairs. We used to make racing frames and
we build 200 mph bikes.
There was no way we were going to wind out the FXR with 25 lbs of boost
without having the
chassis checked. The frames are not necessarily straight when they come
Bye Bye Stock Arm
The stock FXR swingarm is way too weak for
300 HP. We do chain drive conversions for
Dressers and FXRs so it wasn't a stretch cut up a 2008 FLT swingarm and
put in higher shock eye
mounts so we can use the shorter Dresser Shocks as they are way more
13.5" FXR shocks. We raised the shock mounts up a bit more for
FXRs have different pivot to axle lengths
as well as shock locations compared to Dressers.
FXR's had crappy rear brakes and
the original caliper mount would not work anyway with the new, fatter,
25mm rear axle, so
we put on a 2014 FLT rear caliper to go with the new Dyna 17" rear mag
which has the 25mm wheel bearings.
Time to Cut her up.
We checked around for the best
battery..i.e. the highest cranking capacity for our 126
Road Toad and 139 Cubic
Inch Bullett motors and found that Absorbent Glass Mat (AGM) was our
option, and that the only battery more powerful than the OEM Harley
Batteries (DEKA) that we had been using was this Yuasa Battery with 500
We tested a Lithium Iron Phosphate battery in a smaller 80 Inch Evo motor and it worked very well for a year, always starting the efi instantly and maintaining a 13.2VDC charge...When we tried the same 24 cell battery on the Bullett it cranked very quickly but gave up quickly.
In talking to the battery engineers at what we consider to be the best Lithium Battery manufacturer, earthX , they told us the following:
"Based on your engine size (139CID), which as a V-twin engine requires much more cranking amps than a V-8 truck, we do have a battery that has 1,000 cranking amps which should keep the voltage from dropping and affecting your EFI. The model number is ETX48E and weighs only 7.7 pounds. . The bad news is this battery costs $699 . Lithium batteries are very different than a lead acid battery in that if you pull too much cranking amps from the battery in order to start the bike, you will damage the cells. They are not as robust as an AGM battery and for your type of application, it is very hard on any battery but I would think an AGM would fare better. This probably isn’t what you wanted to hear but lithium batteries are fantastic in the right application but your bike's demands are at the upper edge of use."
Rare to find honesty these days. AGM it is.
Make a fake battery with the new Yuasa GYZ32HL dimensions and cut up some stainless 16 gauge 304 stainless steel sheet. The frame brace has to be cut out and moved back and that means the fender has to be modified also. Fabricate a new battery hold-down and isolate the "battery" on all sides with rubber. A circular stop is added for the bump stop under the oem seat pan.
Bosch Motorsport Ignition Coils
Stay Tuned..It's going to get complicated.
With over 8800 programming categories in the Cosworth Pectel SQ6M and a 360HP turbocharger, like we use on our 126 SAB2 Road Toad, we choose to use the Superflow CycleDyn for our development. Safer than running from the cops...not that we used to. Freeway cameras, helicopters, people on cell phones...you get the idea. With the Bonneville Bullett you can't do road testing...It's the Dyno and the Salt Flats.
FXR can be ridden to perfect things in the real world and the Superflow
CycleDyn is about as close to the real world loads and speeds (200mph)
as you are going to get without leaving the shop...Like Tom Bookhamer's
120CID Harley Bonneville bike being tuned by Shane Tecklenburg on our
CycleDyn. Shane is the top Zen Master Motec Guru. Tom drove out to RB
the way from Florida, to get his M130 Motec tweaked. 8" stainess
exhaust extraction with an 1100CFM fan. No carbon monoxide in the shop.
We'll do initial testing on the FXR on the
Superflow CycleDyn...A long way to yet go before we get to that point.