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Author Topic: CB750 Dual Front Disc Speedometer Drive Mod  (Read 336 times)

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Offline spiritof67

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CB750 Dual Front Disc Speedometer Drive Mod
« on: March 12, 2024, 02:37:15 PM »
Looking for info on either a modified replacement speedo drive part or one of those nice billet ones.
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Offline bryanj

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Re: CB750 Dual Front Disc Speedometer Drive Mod
« Reply #1 on: March 13, 2024, 01:15:29 AM »
Depends on which centre hub you have, does it have 2 machined flats or not
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Offline MauiK3

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Re: CB750 Dual Front Disc Speedometer Drive Mod
« Reply #2 on: March 13, 2024, 07:46:54 AM »
Yamiya has the setup
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Offline Bankerdanny

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Re: CB750 Dual Front Disc Speedometer Drive Mod
« Reply #3 on: March 13, 2024, 12:58:07 PM »
No reason to spend any money.

Take the existing drive and with a cutoff wheel remove the lip on the side that faces the wheel and install. The pressure from the forks will hold in place just fine. Here are pictures from my swap with my Lester front wheel. Ignore the pockets I added to my rotor as they are 100% unnecessary. Both my front rotors have been set up so that the bolt head and nut of the bolts that hold the rotor to the hub are countersunk for clearance. If yours are stock you may need to find a thin nut or grind yours down slightly to make extra room.
« Last Edit: March 13, 2024, 01:00:01 PM by Bankerdanny »
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Offline Tracksnblades1

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Re: CB750 Dual Front Disc Speedometer Drive Mod
« Reply #4 on: March 13, 2024, 04:32:53 PM »
Quote from: Bankerdanny on March 13, 2024, 12:58:07 PM
No reason to spend any money.

Take the existing drive and with a cutoff wheel remove the lip on the side that faces the wheel and install. The pressure from the forks will hold in place just fine. Here are pictures from my swap with my Lester front wheel. Ignore the pockets I added to my rotor as they are 100% unnecessary. Both my front rotors have been set up so that the bolt head and nut of the bolts that hold the rotor to the hub are countersunk for clearance. If yours are stock you may need to find a thin nut or grind yours down slightly to make extra room.

Danny,

Who did your discs… .   the one pictured looks to have a  Blanchard ground finish…?
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Offline willbird

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Re: CB750 Dual Front Disc Speedometer Drive Mod
« Reply #5 on: March 14, 2024, 10:40:27 AM »
Quote from: Tracksnblades1 on March 13, 2024, 04:32:53 PM
Quote from: Bankerdanny on March 13, 2024, 12:58:07 PM
No reason to spend any money.

Take the existing drive and with a cutoff wheel remove the lip on the side that faces the wheel and install. The pressure from the forks will hold in place just fine. Here are pictures from my swap with my Lester front wheel. Ignore the pockets I added to my rotor as they are 100% unnecessary. Both my front rotors have been set up so that the bolt head and nut of the bolts that hold the rotor to the hub are countersunk for clearance. If yours are stock you may need to find a thin nut or grind yours down slightly to make extra room.

Danny,

Who did your discs… .   the one pictured looks to have a  Blanchard ground finish…?

And bolts instead of rivets ?
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