Clear the standards of the original and get a satisfying ride
The CBX750F was released by Honda in 1984 as the successor to the CB750F. It was a cutting-edge motorcycle with a rear mono suspension and hydraulic valve clearance adjustment mechanism on the engine to match its appearance with two square headlights. This is a bike that the owner modified based on that CBX750F.
"I also had a CB-F and parts. I found this CBX with a bike that would start but wouldn't shift gears, so I bought it for about $351.41. When I opened the engine, I found that the shifter was broken. Well, it was a part worth a $35.14, so I started modifying it to fit a certain part."
The swingarm of the CBR1100XX and the front fork of the Ducati Multistrada are "certain parts," and one would normally think that they could be modified and reused.
"The CBX pivot is narrow and the pivot shaft is thin. We decided to machine the swingarm. But to enlarge the pivot, we needed a large milling machine. We had a friend machine it so that it would fit, and we also made a mount for the upper side of the shock.
It was a continuous struggle from there (laughs), and although it did fit, the shock movement and link ratio didn't match. In the end, we replaced the three rear shocks, made more link plates, and continued running. We also got advice from Team CB's Ichimoto-san (who passed away in 2013), and asked a friend to do the welding and lathe processing just like the milling we did earlier, and we moved forward. It was fine when we were running, but when we stopped, the suspension didn't sink and we couldn't put our feet on the ground, and when we started running, the suspension just went in (it wasn't working), and we kept trying to figure out the specifications."
The front stem shaft of the Multistrada stem was thick, so we made the bearings larger to overcome this. This had the effect of making the front as solid as reinforcing the frame. As a result, I got a modern 17-inch suspension that is quite capable of running on a circuit.
However, because the CBX has a long tail as standard, after I had worked hard to complete the suspension, I cut the seat rails and seat and shortened it to balance the look. This bike has a unique character that was common among '80s models, and looking at it now, it also has a unique character, but I was able to overcome that and complete it. This should be fun.
Detailed Description
The exterior is basically the same as the CBX750F, but the headlight has been changed from two square lights to a round one on one side. The left and right master cylinders use Nissin radials.
The gauges are an Autogauge engine tachometer in the center of the one-off carbon panel, a Daytona speedometer on the right, an oil temperature gauge and a voltage gauge on the left, and a USB socket.
In order to balance the overall look of the vehicle, the seat and seat rails were each cut about 7cm in the middle and then reconnected.
The motorcycle is painted orange, the same as the owner's other CB-F, and takes advantage of the original CBX750F lines.
The newly developed air-cooled DOHC 4-valve 747cc inline 4-cylinder engine was standard. When the bike was opened to check the gear malfunction that the owner had heard about when the bike was purchased, the cam chain tensioner was for an RC42, so there were signs that the bike had been opened at the time of purchase. The malfunction was resolved by replacing the shifter, and the bike has been going well ever since. There were no dedicated carburetors, even among aftermarket parts, so the owner was given an FCR φ35mm that Ichimoto from CB's had ordered for a CB750 (RC42) and used that.
The front forks are inverted for the Ducati Multistrada, and the frame side has been converted with the stem by increasing the bearing diameter of the head pipe. The brakes are also made from CBR1100XX discs. The axle diameter has been increased to φ25mm, and the stem bearing diameter has also been increased, which has had a similar effect on frame reinforcement.
The swingarm is a modified CBR1100XX, and the wheels are 16/18 inch to CBR1100XX 3.50-17/5.The size has been changed to 50-17.
The rear suspension link was completed after numerous fabrications and test runs, with advice from CB's Ichimoto-san also being taken into account.
Main Customization Details
| Carburetor/Intake | KEIHIN FCRφ35mm |
|---|---|
| Brake Area *Master Cylinder Included Front |
NISSIN Radial Brake Master Cylinder, Standard Lever, Vertical Type Φ19 BREMBO Axial 4P Caliper |
| Brake Area *Master Cylinder Included Rear |
NISSIN Rear Master Standard Type ARASHI Rear Disc |
| Suspension Rear Shock |
OHLINS Mono Shock |
| Drive System *Sprocket and Cover Included |
D.I.D 530VX3 Drive Chain |
| Handlebar Area *Includes Handlebar and Mirrors |
NISSIN Radial Clutch Master Cylinder VELONA Electronic Speedometer Φ48 200km/h AUTO GAUGE Tachometer AUTO GAUGE Oil Temperature Gauge AUTO GAUGE Voltmeter |
| Oil Cooler | ACTIVE Oil Cooler Kit Round 9 inch 13-stages |
| Electrical System | AS UOTANI SP2 Full Power Kit |
Team CB's CBX750F (HONDA CBX750F)
Interview Cooperation: Ichimoto Honda (Team CB's) TEL 0288-22-0594 252 Yoshizawa, Nikko City, Tochigi Prefecture, 321-1273
February 14, 2024
See HONDA Moto Index Page
See HONDA CBX750 Parts & Accessories Page
Original Source [ Heritage & Legends ]
