Honda GB500 thread

Discussion in 'Old's Cool' started by Spurlock, Aug 27, 2016.

  1. JCool

    JCool Long timer

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  2. Spurlock

    Spurlock Long timer

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    Well in a weak moment I decided to add a third 1989 Honda to my little collection, a CB-1. It was yet another Honda from that era that did not sell well at the time but are collectible and desirable now. The Hawk GT 650 V-twin is another. They were really coming up with some creative new designs back then.

    For those who don't know, the CB-1 is a water cooled 6 speed 400cc four, 4 valve per cyl. DOHC with gear driven cams and a 13,500 rpm redline. In many ways it is the mechanical opposite of the GB. Both bikes have distinctive personalities but are equally enjoyable in their own ways. As the saying goes variety is the spice of life and that really applies to riding great but different bikes on favorite roads.

    The surprising thing to me is how wide the usable power band is on the little four. Despite the high redline the CB-1 is perfectly happy to pull away from 25 mph in 6th gear with no hint of lugging.

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    -Bill
  3. Kiwigber

    Kiwigber Adventurer

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    Nice bike Bill-I have been looking to add to my stable and found a 1990 Honda NS1-pretty tidy 50cc two stroke water cooled screamer-I kinda like it but feel it may end up in my lounge alongside the 68 S90 Supersport.

    [​IMG]
    Mudclod, Spurlock and JCool like this.
  4. Spurlock

    Spurlock Long timer

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    Wow. Those are really sweet little bikes and that looks like a beautiful example. Congrats on the find.

    -Bill
  5. Spurlock

    Spurlock Long timer

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  6. Ricardito

    Ricardito Been here awhile

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    Seems like a fair price for a new unit. Only wish it were the speedometer which I still need to replace my erratic original unit.
  7. Spurlock

    Spurlock Long timer

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    A good speedometer shop can likely fix it. This place in San Diego CA did a great job on a friend's old CB400F tachometer. Took it apart, serviced the insides, cleaned up the face and fixed a dent in the housing and it works great now.

    -Bill
  8. Chankly Bore

    Chankly Bore Adventurer

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    While on the subject of bits and pieces, has anyone got a spare or damaged left-hand solo footrest support plate 50750-KN8-700. My little gasper has at some stage been down the road for a skate and I have the pillion type fitted. There is one on Buyee, Japan at the moment but I'm not allowed to bid for some unintelligible reason. Cheers, Charlie.
  9. vincega

    vincega mine gb 500

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    ragazzi buongiorno!
    sono nuovo su questo blog, scrivo dalla italia e spero abbiate un buon traduttore per capire la mia richiesta.
    ho appena acquistato un gb 500 in germania e, come mi e' gia successo con un precedente acquisto (honda vfr 400 nc30), ho
    trovato le parti in alluminio molto corrose, do dai viaggi invernali su asfalto doved e' stato usato il sale. >
    1) la parte termica, coprivalvole cilindro e testa uscivano dalla fabbrica verniciate in g In caso affermativo che tipo di vernice
    mi consigliate?
    2) i carter credo fossero solo lucidati e ricoperti da vedrnice trasparente, vero?
    3) trovo molta difficolta 'un carteggiare i carter consa mi consigliate di fare ?
    grazie a chi mi rispondera
    enzo
  10. Chankly Bore

    Chankly Bore Adventurer

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    Enzo, if you go back through the thread you'll find a lot of good information on these topics. I assume you are going to take the bike to pieces. If so, maybe wet bead blast the crankcases or use an aluminium cleaner to remove the oxidation and then polish and clear-coat the alternator and clutch covers and the front fork legs for a start.
  11. vincega

    vincega mine gb 500

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    Grazie chankly! Per quanto riguarda i tuoi poggiapiedi, ho trovato su eBay quelli della xbr che che hanno
    i medesimi attacchi e la pedana per il passeggero.
  12. AllenS

    AllenS Adventurer

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    I am moving forward with the GB project. I had new spokes made for both wheels in stainless. The rear rim on my bike is in great shape but the front rim has some cosmetic flaws in the form of small nicks and a deep scratch around the outside of the rim. Looks like someone used poor judgement and marginal tools to take a tire off.

    Since NOS Honda replacement rims are nowhere to be found I am looking for ideas on how to restore this rim. I have read some articles on removing the anodizing. My thought is that I might be able to remove the anodizing, smooth and dress the defects and have the rim re-anodized.

    Has anyone done anything as goofy as that and if so, how did it work? Any other ideas would be welcomed. I think that if i pulled the wheel apart I could clean up the bare rim pretty well and it might not be as rough looking but I was hoping that there is a way to make the rim look like a new factory rim.

    All for now,
    Allen
  13. JCool

    JCool Long timer

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    Powder coat them.
  14. AllenS

    AllenS Adventurer

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    Powder coating is certainly an option but my goal is to have the stock aluminum wheel look.
  15. solidol

    solidol Adventurer

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    Strip, polish, anodize clear?
  16. AllenS

    AllenS Adventurer

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    I have been reading about how to strip the anodizing. Uses pretty caustic chemicals but it is possible. There are a few specialty plating shops here in the Silicon Valley area so I plan to take the rim down and see if it can be stripped of the old anodizing layer so I can polish and re-anodize.

    I was hoping someone had done similar things and could give me tips.
    solidol likes this.
  17. JCool

    JCool Long timer

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    There are powder coat colors that look like regular or polished aluminum. PC is pretty durable too.
  18. AllenS

    AllenS Adventurer

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    I have my own powder coating setup and do a lot of powder coating. You are correct that there are some really cool and durable powder coating colors and actually different types of powder coat medium but I was hoping to keep the wheels looking like anodized aluminum. The rear wheel is almost perfect, just the front wheel needs work.

    A friend of mine told me that a local plating shop stripped an anodized aluminum heat shield with significant corrosion, polished it and re-anodized it an it looked like a NOS part. I will contact them in the next few days and see what they have to say. I will keep everyone posted.
  19. Chankly Bore

    Chankly Bore Adventurer

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    Found another site in Japan that was more reasonable. Looks like I've got the part coming. Cheers to everyone.
  20. AllenS

    AllenS Adventurer

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    I just noticed your post. I do have one. If you have not ordered yours yet I can take photos and send them your way.
    Allen