Poll

How do you like your non-stock?

Voxonda's (aka Rob Bosschieter) VOSS OSS CB750 Race Bike
14 (60.9%)
Rick4004's INSANE IN THE MEMBRANE Turbo EFI CB400F
9 (39.1%)

Total Members Voted: 23

Voting closed: February 28, 2023, 06:22:54 PM

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Author Topic: Vote for Bike of the Month March 2023  (Read 776 times)

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Offline SOHC4 Cafe Racer Fan

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Vote for Bike of the Month March 2023
« on: February 17, 2023, 06:22:54 PM »
Non-Stock, Custom, One-Off - these bikes are gloriously modified


Voxonda's (aka Rob Bosschieter) VOSS OSS CB750 Race Bike

1 by Donald Leonhardt, on Flickr

3 by Donald Leonhardt, on Flickr

2 by Donald Leonhardt, on Flickr

4 by Donald Leonhardt, on Flickr

12 by Donald Leonhardt, on Flickr

11 by Donald Leonhardt, on Flickr

10 by Donald Leonhardt, on Flickr

9 by Donald Leonhardt, on Flickr

8 by Donald Leonhardt, on Flickr

7 by Donald Leonhardt, on Flickr

6 by Donald Leonhardt, on Flickr

5 by Donald Leonhardt, on Flickr


Rick4004's INSANE IN THE MEMBRANE Turbo EFI CB400F
http://forums.sohc4.net/index.php/topic,190988.0.html

Engine
Honda CB400F 4 cylinder, air cooled
Capacity - 400cc - 51mm bore x 50mm stroke
Compression ratio 9.4:1
Redline 10,000 rpm
Stock power - 37HP @ 8,500 rpm, 24 lb-ft @ 7,500 rpm @ crankshaft
Calculated power @ 10 PSI boost - 65HP, 44 lb-ft torque @ crankshaft
Measured HP at wheel via G-Tech instrument - 54HP @ wheel
Intake - Turbo>Intercooler>Upper Plenum>2 x 38mm CBR600RR throttle bodies>Log Style Lower Plenum>Injector Bodies
Intercooler - Bell core with custom end tanks
Turbo - Chinese VZ-21 (IHI RHB31 clone)
Stainless exhaust collector - hand built. Akrapovic titanium muffler
ECU - Microsquirt v3
Custom 12-1 trigger wheel, CBR600RR VR sensor
CBR600RR lower injectors (4) in custom injector bodies
CBR600RR Throttle Position Sensor
CBR600RR Fuel Pump
GM Air Temp Sensor
GM Coolant Temp Sensor
GM 2 bar sensor for MAP
GM 1 bar sensor for atmospheric Baro
Bosch 4 tower Logic Coil - Wasted spark
14Point7 Spartan 2 Wideband O2 controller/Bosch LSU 4.9

Other Engine upgrades
APE upgraded cylinder studs
Heavy duty cam chain
Barnett clutch plates
CBR600RR charging system
Hand built oil pan to accommodate turbo oil draining
CNC oil filter plate to fit oil cooler/turbo feed lines and fit a spin-on filter
Earl's curved oil cooler
Dished sprocket and bearing support to fit wider rear wheel

Chassis
Wheels - Spun Aluminum Rims, CNC machined hubs and spokes. 120 x 17 front, 160 x 17 rear
Front Forks, front disk, front caliper, front axle - CBR954RR
Triple clamps and clip on bars - CNC
Frame - Hand built 1028 ERW mild steel, 6061-T6 plate
Subrame - CNC 6061-T6
Swingarm/shock - Aprillia Mille swingarm (narrowed), CBR600RR shock. Steel rocker Link (mimics CBR600RR ratio)
Rear disk - CBR600F1. Rear Caliper - Brembo. Rear Master cylinder - Honda CR250

Body
Fairing mount, headlights - Buell Firebolt - magnesium
Fairing - Carbon Fiber
Front Fender - Carbon Fiber from unknown Yamaha - Hand formed and CNC aluminum mounts
Gauges - Koso RX-2, Accell boost gauge
Shorai Lithium battery
Custom Wiring harness
Tank - Hand formed 3003 aluminum
Seats - Hand built

IMG_3621 by Donald Leonhardt, on Flickr

IMG_3625 by Donald Leonhardt, on Flickr

IMG_3631 by Donald Leonhardt, on Flickr

IMG_3619 by Donald Leonhardt, on Flickr
Logged
1975 CB550K1 "Blue" Stockish Restomod (http://forums.sohc4.net/index.php?topic=135005.0)
1975 CB550F1 frame/CB650 engine hybrid "The Hot Mess" (http://forums.sohc4.net/index.php/topic,150220.0.html)
2008 Triumph Thruxton (http://forums.sohc4.net/index.php/topic,190956.0.html)
2014 MV Agusta Brutale Dragster 800
2015 Yamaha FZ-09 (http://forums.sohc4.net/index.php/topic,186861.0.html)

"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them — but I want one anyway, and on some days I actually believe I need one.... Being shot out of a cannon will always be better than being squeezed out of a tube. That is why God made fast motorcycles, Bubba." Hunter S. Thompson, Song of the Sausage Creature, Cycle World, March 1995.  (http://www.latexnet.org/~csmith/sausage.html and https://magazine.cycleworld.com/article/1995/3/1/song-of-the-sausage-creature)

Sold/Emeritus
1973 CB750K2 "Bionic Mongrel" (http://forums.sohc4.net/index.php?topic=132734.0) - Sold
1977 CB750K7 "Nine Lives" Restomod (http://forums.sohc4.net/index.php?topic=50490.0) - Sold
2005 RVT1000RR RC51-SP2 "El Diablo" - Sold
2016+ Triumph Thruxton 1200 R (http://forums.sohc4.net/index.php/topic,170198.0.html) - Sold

Online newday777

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Re: Vote for Bike of the Month March 2023
« Reply #1 on: February 18, 2023, 05:51:35 AM »
Well normally I'm a 750 fan but after seeing the 400 which piqued my interest to read on it .........oh boy that looks fun.... 8)
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Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline Stev-o

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Re: Vote for Bike of the Month March 2023
« Reply #2 on: February 26, 2023, 03:01:28 PM »
WOW...two great non-stockers! Voted...
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'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........
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