1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Project Alan's CB250 Nighthawk

Discussion in 'Your 250cc Projects' started by Alan f., Jul 18, 2018.

  1. Alan f.

    Alan f. US Spec CB250 Nighthawk 1993

    Messages:
    29
    Likes Received:
    12
    Trophy Points:
    13
    Joined:
    Jul 17, 2018
    Gender:
    Male
    Occupation:
    On-Site Computer Hardware blah
    Location:
    Boston, USA
    My Bike:
    CB250 Nighthawk
    Thank you for the kind words Gents, I've got a great deal of lost momentum to make up for on this one.
     
    • Like Like x 1
  2. Alan f.

    Alan f. US Spec CB250 Nighthawk 1993

    Messages:
    29
    Likes Received:
    12
    Trophy Points:
    13
    Joined:
    Jul 17, 2018
    Gender:
    Male
    Occupation:
    On-Site Computer Hardware blah
    Location:
    Boston, USA
    My Bike:
    CB250 Nighthawk
    I don't know if this is a cafe or a bobber or any of the trendy classes. I guess we'll take a vote when its done.
     
  3. TonyZXR

    TonyZXR Active Member Premium Member

    Messages:
    296
    Likes Received:
    159
    Trophy Points:
    148
    Joined:
    Apr 17, 2018
    Gender:
    Male
    Location:
    New South Wales
    My Bike:
    GPX250, ZXR250A, ZXR250C
    nice one! , this is gonna be sweet when it's finished
     
  4. Alan f.

    Alan f. US Spec CB250 Nighthawk 1993

    Messages:
    29
    Likes Received:
    12
    Trophy Points:
    13
    Joined:
    Jul 17, 2018
    Gender:
    Male
    Occupation:
    On-Site Computer Hardware blah
    Location:
    Boston, USA
    My Bike:
    CB250 Nighthawk
    I'm using the original swingarm, frame, tank and engine so people might recognize what kind of bike it was.
     
  5. Andych

    Andych Well-Known Member Premium Member

    Messages:
    2,186
    Likes Received:
    1,326
    Trophy Points:
    798
    Joined:
    Oct 6, 2016
    Gender:
    Male
    Location:
    Sydney
    My Bike:
    1987 Yamaha SRX250, Honda 1975 CB400F, Honda 1974 CB250 G5 ?
    I dont think it is really either a bobber or a Cafe, more just a Custom build. Whatever it is... it is looking pretty sweet so far :)
     
    • Agree Agree x 1
  6. Alan f.

    Alan f. US Spec CB250 Nighthawk 1993

    Messages:
    29
    Likes Received:
    12
    Trophy Points:
    13
    Joined:
    Jul 17, 2018
    Gender:
    Male
    Occupation:
    On-Site Computer Hardware blah
    Location:
    Boston, USA
    My Bike:
    CB250 Nighthawk
    Thanks Gents, I've been struggling with a few tail designs that'll work with that fender, case and a stock seat.
    Right now I'm in the middle of putting a bending brake together from bits I already have so I can bend up the tail section (also functioning as a rack for the case) from some 3mm alloy plate I had lying around. I'd experimented with different bending techniques, scoring with a cold chisel, drilling holes at different spacing along the bend line, soap and heat, and a few others but a small radius bend with a brake will be best. I'll post it in the handmade tools section when its done. Wish me luck.
     
    • Like Like x 2
    • Nice Work Nice Work x 1
  7. Alan f.

    Alan f. US Spec CB250 Nighthawk 1993

    Messages:
    29
    Likes Received:
    12
    Trophy Points:
    13
    Joined:
    Jul 17, 2018
    Gender:
    Male
    Occupation:
    On-Site Computer Hardware blah
    Location:
    Boston, USA
    My Bike:
    CB250 Nighthawk
    My little bending brake still has some more hours to go, I've been working at it here and there when possible but nothing to show off just yet.

    But I'd like to show off this bit, I've always thought a big tank on a small bike with a comfortable seat and some type of fairing would really be fun for long rides. My previous Honda CM400C was ok for the first two hours, then the seat and fuel capacity would show their limits.

    I spotted this Kawasaki ZG1000 or GTR1000 tank on eBay for a good price, clean inside and out, good factory paint and some little dents I can live with.
    After a little research I found a Corbin seat from a GPZ900 (top gun movie bike) will mate up to the tank acceptably and is much shorter than a ZG or GTR seat.

    I'm not sure if I'll use them on this project but what do you think? I conservatively estimate a range of 500-750 miles.

    L0nmZn.jpg

    1oaQbG.jpg

    czxIvV.jpg
     

    Attached Files:

    • Like Like x 1
  8. Murdo

    Murdo The Good Doctor Staff Member Premium Member Ride and Events Crew Contributing Member

    Messages:
    4,916
    Likes Received:
    3,906
    Trophy Points:
    998
    Joined:
    May 4, 2013
    Gender:
    Male
    Occupation:
    Retired
    Location:
    Tamworth, NSW
    My Bike:
    Maico 250, Royal Enfield 250, CF 250 V5 and 650TK, XL250, CBR250, ZZR250 plus a few others.
    That looks sweet, not a lot different to the original tank only bigger. Will you have to modify the steering stops so the forks can clear the bigger tank. Corbin have a good name here for comfy seats, and you can cut it down to suit the rear case.
     
  9. Alan f.

    Alan f. US Spec CB250 Nighthawk 1993

    Messages:
    29
    Likes Received:
    12
    Trophy Points:
    13
    Joined:
    Jul 17, 2018
    Gender:
    Male
    Occupation:
    On-Site Computer Hardware blah
    Location:
    Boston, USA
    My Bike:
    CB250 Nighthawk
    I haven't figured out the steering stops yet, but my first priority is to use the stock tank. Unfortunately I noticed a failed lining in the stock tank so I'll have to fish out a piece of it to determine what it'll dissolve in. Not a very encouraging find.
     
  10. Alan f.

    Alan f. US Spec CB250 Nighthawk 1993

    Messages:
    29
    Likes Received:
    12
    Trophy Points:
    13
    Joined:
    Jul 17, 2018
    Gender:
    Male
    Occupation:
    On-Site Computer Hardware blah
    Location:
    Boston, USA
    My Bike:
    CB250 Nighthawk
    Thank you Murdo!
     

Share This Page