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Thread: A Strange GB500 Deal: continued

  1. #1
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    A Strange GB500 Deal: continued

    Progress has been slow.
    On this particular GB500 the aluminum castings do not have the quality that I find in my SR500s. Here are some photos of my efforts on polishing the brake backing plate & in spite of many hours spent it is only @ 220 grit.

    I also was able to get the left headlamp ear up to 220 grit & here they are together.

    All of you that have done polishing of aluminum know that one tends to get creative figuring out how to reach a deep down crevice. The particular polishing wheel was made from 3M stripping pads attached to a long 1/4" carriage bolt. I used the cap from an aerosol can for a template.

    This is my first attempt with the new system. I hope to learn how to label the photos & position them in the proper place in the narrative.
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  2. #2
    Senior Member gcrank1's Avatar
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    Well done, as always, Henry......what a dismal condition to start with! Did that bit have any factory protective clear on it?
    Have you considered silver/'chrome' powdercoat? Or, at least, after all your polishing work how about clear powdercoat?
    '81 Yamaha SR500 Caff Racer
    '09 Suzuki TU250X 'The Silent Red Fellow'
    '98 Honda Shadow 750 ACE Deluxe
    In all things maintain your uprightness lest the road reach up and smite thee

  3. #3
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    Blake,
    Honda was smart on this bike (maybe on others also). Rather than finish the aluminum parts to a shine, they finish it down to a certain point & then powder coat. I wanted this part polished for some contrast.

    That Florida salt air must be super corrosive to work it's way through the powder coating. However, I think I'll use ACF-50 first to see how it survives (the Georgia air is friendlier).

  4. #4
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    Wheel hubs & bearing removal

    I needed a break from the brake backing plate polishing (polishing is a character building experience, but I had about all that I could stand for a while).

    I recently acquired a bearing removal tool & thought I'd spend a few minutes and snatch those puppies out to get the hubs ready for powder I coating. The few minutes didn't produce any results. My youngest son came over to help (he's over 250 lbs.) and he couldn't do any better. I did have enough forethought to do this before removing the spokes so I'd have something to hold. The removal tool kit has a 3 lb. slide hammer & I was wishing for a 5 lb..
    Even though it would be proof of a weak character (not enough polishing experience?) I sneaked it off to the local Honda shop. They had those bearing out in about 10 minutes with a factory Honda tool..................at NO CHARGE!

    With the bearings out the spokes were removed. Close inspection of the rims revealed several minor nicks in the rear rim & 4 major nicks in the front rim: all on the same side.

    I messaged my partner in crime to tell him the part numbers on the bearings & seals needed & also included photos of the front rim damage. I suggested we replace the front rim. By phone later we agreed to replace both rims to make this a first class build...........we're in it too deep to start compromising.

    I'm sending him the hubs to have powder coated (he has a certain platinum color in mind) & he'll install new bearings & seals so we can send them to Buchanons.

    Here is 1 photo of the hubs & 4 photos of front rim damage.
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  5. #5
    A lot of the marks would mostly polish out if you had them professionally done...as might some of the detail on the rim markings too of course.

    Some of them look like tyre lever marks.

    Not sure these Honda style DIDs are so easy to come by aftermarket...could be wrong of course. Similar rims to the CB250RS etc.

    Honda might have some new ones sitting around for sale at a cheaper price?

    SR
    ...'Any unnecessary items on the bike, that it doesn't really need, shouldn't be there!'. (Café racers creed). SR..

  6. #6
    Like the photos Henry.Something l need to get better at is metal polishing.Seems you have it down pretty good. Keep posting the instructional stuff.I find it very interesting.

  7. #7
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    Lightbulb DID rim damage

    Quote Originally Posted by stewross View Post
    A lot of the marks would mostly polish out if you had them professionally done...as might some of the detail on the rim markings too of course.

    Some of them look like tyre lever marks.

    Not sure these Honda style DIDs are so easy to come by aftermarket...could be wrong of course. Similar rims to the CB250RS etc.

    Honda might have some new ones sitting around for sale at a cheaper price?

    SR
    Stew, the images probably don't show the depth of some gouges. I didn't photo all: two of them are at least 1/8" deep (maybe deeper). A professional polisher will have the same option as me. The edges of the deep gouges can be rounded
    & made less prominent. Otherwise, bringing the high spots down to the lows would ruin the edge. You are correct that they can be improved, but I don't think it would satisfy me or Bobby (the co-owner).

    The suggestion on searching for a Honda (40 hole) rim through Honda is excellent (I don't know if any current models are shouldered). I'll visit the local Honda dealer tomorrow & do some checking. Thanks for the tip.
    Henry

  8. #8
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    Quote Originally Posted by Svenster View Post
    Like the photos Henry.Something l need to get better at is metal polishing.Seems you have it down pretty good. Keep posting the instructional stuff.I find it very interesting.
    Thanks for the encouragement.
    Henry

  9. #9

    Wheel rims...

    Interesting that the bike has 40 spoke rims...didn't think Honda did that anymore. Last Hondas I knew had that many spokes were bikes like the CB450, 500 four and CB750...all a while back now. Mostly bikes have 36 spokes now.

    Good luck with Honda...you never know you might get lucky.

    Takasago and DID still make nice period rims...40 hole and all.

    SR
    ...'Any unnecessary items on the bike, that it doesn't really need, shouldn't be there!'. (Café racers creed). SR..

  10. #10
    Senior Member MadMax's Avatar
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    Both rims are listed as NLA from Honda, stock prices are 350 Euro front & 430 Euro rear (whatever that is in real money), good luck with the search

    Max

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