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  1. jcharny

    Motogadget Turn Signals - Moving Metal Tube

    I have two pairs of motogadget turn signals on my CB750F- the m-Blaze Ice up front and the m-Blaze Pin in the back. Both sets of turn signals come pre-wired with a digital power supply circuit housed in a metal tube. The tube is wired approximately halfway between the turn signal and the end...
  2. jcharny

    Two Failed Shorai Batteries While AGM Works Fine...

    I'm at a total loss (pun intended) with the battery situation on a 1981 CB750F build. All ignition and charging components on the bike are stock except for the regulator and rectifier (replaced with a Rick's Electrics combo unit) and the coils (replaced with Dyna 3ohm coils). The bike also has...
  3. jcharny

    Wiring Relays and Switches

    I have several relays on my 1981 CB750F that allow me to use small switches (~3A to 4A max) for accessories. As an example, I've drawn up some diagrams below for how a horn could be wired with a battery, fuse, switch, and relay. Three diagrams are presented, though I think most people will...
  4. jcharny

    Short Risers for 7/8" Handlebars

    Does anybody have a good source for short (i.e. <2" rise) risers for a 7/8" handlebar? I need to fit them in a custom triple with 12.8mm (0.5") ID bushings. Thanks, JMC
  5. jcharny

    VHT Caliper Paint

    I painted my calipers with VHT SP739 Satin Black Caliper Paint last night. The instructions were to apply 2 dry coats and 1 one wet coat within 1 hour, allowing 10 minutes between coats. The instructions also say, if additional coats are needed, wait 7 days before applying more paint. VHT...
  6. jcharny

    WTB - Honda CB750F DOHC Frame

    Anybody trying to get rid a of a 1979 - 1982 Honda CB750F frame? Thanks, JMC
  7. jcharny

    WTB - Vance & Hines Supersport Exhaust

    Looking for a Vance & Hines Supersport exhaust system for my 1981 CB750F. Currently have the stock 4-into-2 pipes. Thanks, JMC
  8. jcharny

    Look for someone to TIG weld in NYC

    I'm in the process of making a battery box out of 0.08" aluminum sheet for my 81 CB750 build. The box will be for a Shorai battery that will tuck up under my tank. Are there any TIG welders in the New York City area that would be willing to help out? Thanks, JMC
  9. jcharny

    CB750F DOHC - Gauge Mounting

    I'm looking for ideas on how to mount two 2.5" gauges (speedo & tach) purchased from Dime City to my modified '81 CB750 F triple tree. I don't have pictures of mine so I nabbed a couple pics from someone selling a stock one on ebay. I've ground off the four mounting points marked with red...
  10. jcharny

    CB750F DOHC - Seat Pan/Mounting

    So I've asked several members here about their experience making a brat-style seat pan for my '81 CB750F but wanted to bring it into one topic. The bike's subframe has an up-swept tail section that has been giving me quite a bit of trouble. There are two curves I need to match, highlighted with...
  11. jcharny

    1981 CB750F - Tail Hoop Geometry

    I'm trying to decide how long I want the seat to be on my '81 CB750F brat build and thought I'd turn to the group for help. The idea is to weld on a hoop and have a relatively flat seat, with the only curve being derived from the CB750 DOHC's original frame shape. I've looked at some of the...
  12. jcharny

    Charnado - 1981 CB750F - Brooklyn, NY

    What's up fellow two-wheelers. I'm starting my first build and am likely already in over my head- thought it would be a good time to introduce myself! I'm working out of a communal garage in Brooklyn with access to lifts, a whole suite of tools, a sandblaster, MIG and TIG welders- the...
  13. jcharny

    1981 CB750F DOHC - Solid Stamped Subframe?

    I'm just starting on a 81 CB750F brat build and had a quick question. I'm looking to weld on a seat hoop but have heard from a gentleman at dimecity that my year F model may have had a solid stamped subframe. This would prevent me from using slugs to join the frame to the hoop and would make...
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