Author Topic: Frame preparation / stripping what's best?  (Read 491 times)

Offline McCabe-Thiele (Ted)

  • Grogu
  • *
  • Posts: 6240
    • View Profile
Frame preparation / stripping what's best?
« on: February 16, 2021, 03:01:58 PM »
I'm just part way through stripping the rear forks on my 400 four - it's a pretty tedious process. I've already sent an enquiry to a local firm about the cost of shot blasting the frame. Got me thinking is that too harsh would bead blasting be better?

Honda CB500 K1 (new pit dug out ready)
Honda CB400 four super sport (first money pit)
Link to my full restoration http://www.sohc.co.uk/index.php/topic,23291.0.html

Offline MrDavo

  • SOHC Master
  • Posts: 1369
  • He who dies with the most toys wins
    • View Profile
Re: Frame preparation / stripping what's best?
« Reply #1 on: February 16, 2021, 07:06:05 PM »
I didn't get it done myself, but when I bought my Z1 project the seller told me that the frame had been 'shot blasted' before professionally painting with gloss black. I was a bit alarmed at the thought of such a coarse media being used to blast a frame, but the finish is perfect, showing every tiny detail but no imperfections. It's also much more original looking than a thick powder coat.

Where it had been masked before paint, such as the threaded studs that the rear shocks mount on, there is very little metal 'missing' but a uniform matt grey finish. You can just about see that in the photo. Sadly I have no more information about who did the job, what it cost or what was used, but the end result was excellent.



 I'm more of a wire brush and rattle can man myself, that's what my CL450 got. Cheap but factory looking, although original Honda frame paint always struck me as not that great, I've never noticed any primer under what appears to be one coat of gloss black.


1969 Honda CL450 'Scrambler'
1974 Kawasaki Z1A
2005 Harley XL1200R Sportster
1985 Porsche 911 3.2 Carrera Sport
1978 VW Bay Window camper van

Offline hairygit

  • SOHC Jedi
  • Posts: 2708
    • View Profile
Re: Frame preparation / stripping what's best?
« Reply #2 on: February 16, 2021, 07:16:36 PM »
Proper shot blasting is the best thing for a frame/swing arm. Bead blasting is more suited to softer metals like alloys etc.

Sent from my POT-LX1 using Tapatalk

If it's got tits or wheels, it's hassle, if it's got both, RUN!!!

Offline philward

  • SOHC Jedi
  • Posts: 2798
    • View Profile
Re: Frame preparation / stripping what's best?
« Reply #3 on: February 16, 2021, 07:53:01 PM »
I'm like Dave, rotary wire brush (wear goggles - them bloody wires go everywhere), etch primer and rattle cans. The amount of bad weather my bikes see, the paint will last 10 times the amount of time I have left on this planet. I do like doing as much of a resto as possible myself too.
Current Bikes:-
Honda CB750K2 (1975)
Honda CB500K2 (12/1972)
Honda CR750 Replica (1972)
Honda CB350K0 (1969)
Kawasaki ZZR1100D3 (1995)
Kawasaki ZZR250 (1990) Project (Going on eBay ASAP)

Offline SumpMagnet

  • SOHC Pro
  • Posts: 685
    • View Profile
Re: Frame preparation / stripping what's best?
« Reply #4 on: February 16, 2021, 08:04:57 PM »
I went with paint stripper, wire brush, and much elbow grease! Top coat paint of choice is Hammerite smooth black
CB750F2 - in pieces
CB900F Hornet - the daily transport

Offline Charlie J

  • SOHC Member
  • Posts: 104
    • View Profile
Re: Frame preparation / stripping what's best?
« Reply #5 on: February 16, 2021, 08:59:14 PM »
+1 on the diy method.
Paint stripper and wire brush followed by rattle can red oxide primer, PJ 1 satin black paint and a couple of coats of satin clear coat. I wasn’t aiming for a factory type finish and like the satin look. Obviously it won’t be as hard wearing as powder coating but not too worried as bike won’t see much rain/salt etc.

[ Guests cannot view attachments ]

[ Guests cannot view attachments ]

Offline Laverda Dave

  • SOHC Jedi
  • Posts: 2561
  • Health is wealth
    • View Profile
Re: Frame preparation / stripping what's best?
« Reply #6 on: February 16, 2021, 09:09:26 PM »
I took the Z400j frame, swing arm, upper and lower yokes, headlight bowl, battery box, main and side stands plus 32 various brackets to Microblast in Windsor for shot blasting and powder coat. Some parts were gloss black and some satin black. I put old bolts into threads to protect them and bungs into the steering head and swing arm pivot with through rods and nuts. Cost was £280 for everything, job done. They have coated three frames for me in the he past and never had any runs etc, class act.
1976 Honda 400/4
1977 Rickman Honda CR750
1999 Honda VFR 800FX
1955 750 Dresda Triton
1978 Moto Morini 350 Sport
1978 Honda CB400/4 'Rat' bike
1982 Laverda 120 Jota

 

SimplePortal 2.3.5 © 2008-2012, SimplePortal