MFP Pursuit - missed the deadline

Discussion in 'BUILD OFF 14 - CLASS 1 - BUILD JOURNALS' started by HuffnPuff, May 8, 2019.

  1. HuffnPuff

    HuffnPuff

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    I’ll throw this in for Class One. While I’ve got a lot ahead of me in class 2, this should be a fairly quick build and one that doesn’t create much noise - so late nights and early mornings and other times when the house should be quiet can be build time.

    Here is the donor frame. Same cheap cruiser style frame as I used in last years build off.
    http://www.ratrodbikes.com/forum/index.php?threads/model-78.107115/
    977A9E7D-1DED-4711-8CEA-EAE4AF7AC2B4.jpeg
    Some other donor parts lurking in the pile.
    FA3C915C-5ED9-441C-AB0C-7155ABE063BE.jpeg
    Some inspiration. I’d like to build it in the cafe racer style and add my own paint scheme to be revealed in good time.
    BBD59E7D-55BA-4A16-8FF3-F6EADF0F708A.jpeg
    As with my other builds for Rat Rod bikes this will be a budget build using scrounged and cheap parts. I’ve spent $10 on some tyres and hope that will be about it except paint.
     
    Last edited: May 8, 2019
  2. LukeTheJoker

    LukeTheJoker Moderator

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    Nice, looking forward to seeing it happen!
     
  3. SpikeFC

    SpikeFC

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    Please tell me that you took the name from this baby...
    [​IMG]
     
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  4. HuffnPuff

    HuffnPuff

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    There may be some inspiration in that - but not exactly.
     
  5. sdframe

    sdframe

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    I love cheap builds; they're a true test of a ratter's resourcefulness and ingenuity.
     
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  6. HuffnPuff

    HuffnPuff

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    Phase one. Strip and mock. Hmmm. Strip two bicycle frames down, then use parts to mock up and assess stance. 7B85DA67-431D-4C3A-AE24-E403385414CC.jpeg
    Looks ok. Proceed to phase 2. Think I’ll need to try some other bars. I’m also considering a rear hub motor for a little extra ‘pursuit’ motion. Just not sure the battery will fit in the frame without mods ie class 2, but I’ll be working in my class 2 later this week so might have to save the e part of this build until the build off is completed.

    I had the idea for this build during last years build off but didn’t get around to starting it. Now I have a finish date I’ll try harder to get distracted from finishing it.
     
  7. toro1978

    toro1978

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    If you plan on using a "bottle" battery I have one and could measure it for you so you know if it fits?
     
  8. HuffnPuff

    HuffnPuff

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    Thanks. I have a battery etc. picked up an incomplete conversion with bike for $250 last week. Spent a few ‘off build off’ hours removing the e-gear and putting the bike back together. Sold the bike this morning for $190 so I have a hub motor, battery and controls for $60. Just needs a charger. I haven’t test fitted the battery, but it just looks too big to work with the canti bars.
     
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  9. HuffnPuff

    HuffnPuff

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    Not a lot of actual progress, but I’ve decided on using the e-bike kit. That also means working out some brakes for the forks and using a disc brake on the back. Little internetting today and it seems feasible. Off to the community bike centre tomorrow to scrounge some parts.
     
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  10. LukeTheJoker

    LukeTheJoker Moderator

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    Looking forward to seeing what you come up with!
     
  11. HuffnPuff

    HuffnPuff

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    059E0051-048D-4AA6-AFC6-2334EE093209.jpeg More mocking, but not significant progress. I’ve trimmed down the guards to what I think will work. Might shorten the back a little more. Also changed the bars over and found some forks - that have short steerers unfortunately. And the battery won’t fit in the frame. Does cutting the canti bars off mean I’m into class 2 territory or should I be finding another solution for pursuit power?
     
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  12. GuitarlCarl

    GuitarlCarl

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    A few ebikes conversions I've seen have the battery on a rack in the back. It's an opportunity to build an enclosure with some graphics or styling to match your theme. A second glance leads me to think that you might be able to hang it under the frame, positioned like a moto radiator would be. Is it an assembly of smaller batteries? If it is you might be able to build a custom box for them that fits in the space you want it to. Interested to see the fork build.

    Carl.

    Sent from the edge of an alternate universe...
     
    Last edited: May 20, 2019
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  13. HuffnPuff

    HuffnPuff

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    Thanks Carl. I wasn’t keen on adding a rack, it’s all about style!

    I found a solution to the battery problem. Frame swap (hopefully that isn’t infringing upon the rules). Other than disassembling and then mock-up I haven’t touched the first frame. I almost tripped over the solution on the floor in my garage, then discovered it doesn’t have any canti bars.
    75BE0574-1F2B-4F52-B184-05782CEFA59B.jpeg
     
  14. RustyGold

    RustyGold

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    Traditionally there has been one frame swap allowed...I don't see it in the current rules. I assume it is still the law of the land :grin:.

    Jason
     
  15. OddJob

    OddJob

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    Yep, one frame swap per build-off is the way I understand it. The cutting of the cantis would have been a frame modification, which I believe would have landed you in Class 2.

    Carl's 'frame radiator' comment made me think of this, a current option in the e-bike world of production bikes.

    Scrambler-S-bike-product-1_41bd3041-f0b2-438b-b606-e017ac63c30f_2000x.jpg
    Scrambler S, now that's a cool cucumber; with extra juice!
     
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  16. HuffnPuff

    HuffnPuff

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    A little more progress. One unexpected advantage of the frame swap is that the headtube is shorter so the fork steerer is long enough.

    Managed to rough cut some plate to shape for the springer bits then tried it on for size. So far so good.

    E9137581-8668-4E82-94A2-E65BCFF739CB.jpeg 7C4FEFAC-F40B-4C8D-9B2A-3A60B0504009.jpeg
     
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  17. OddJob

    OddJob

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    Lot of curves going on there! RaT oN~!
     
  18. HuffnPuff

    HuffnPuff

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    I’ve been a bit slack so progress is slow
    A102CDC6-7898-4206-80AB-15332E43253D.jpeg 402F5341-717C-4975-8003-F7A2D36E8179.jpeg
    Was trying to work out how to fix the shock to the second fork. The diameter of ge shaft was pretty close to 1”, then I noticed the base of the steerer tube was fatter. Lopped off the steerer, bored out the remaining tube a bit trimmed down the shock mounting eye and it fitted in neatly. Bit of a light weld, then some filler and it should look almost like it’a meant to be there.
     
  19. OddJob

    OddJob

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    Cool fork mod!
     
  20. HuffnPuff

    HuffnPuff

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    Thanks. I’m just making it up as I go along. Preferring to buy tools and scrounge parts. Managed to pick up the big drill bit (15/16”) today as runout stock which was good, probably on runout because it’s imperial! I’m sure it’ll come in handy later as well somewhere.
     
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