Phantom Bike...out with the Small Block in with the Big Block

Discussion in 'Motorized Cruiser Bicycles' started by culvercityclassic, Aug 18, 2017.

  1. culvercityclassic

    culvercityclassic Well-Known Member

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    IMG_4173.JPG

    I need to try what you say about the sprocket adapter, checked my stock and looks like I have the first version Pat made, looks a little weak and the 40 tooth is small, have another one from Jakes Bikes with a little more meat on It i may try...46 sprocket.

    I like the clamps you use and need to do the research to find them, you do have a monster motor in that frame with no issues I see.

    A short video after jetting the carb and adjusting fuel mixture, CVT disconnected so this bike does not act like a BULL while tuning...
     
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  2. indian22

    indian22 Active Member

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    Jeff the HD clamps are the go to clamp for Harley's 1" and 1/1/8" tube diameter, black or chromed. 1/2" hole is most common I've noticed, which I've made bushing for several times. I'm telling you they CLAMP. and I'm pretty familiar with the high dollar tube clamps used on roll cages and tube frames for off road racing. In the sizes available these are better. The size spreads the clamping surface area & really resists lateral forces while preventing tube damage from clamps compression, though not a problem with even thin wall DOM tube, could possibly damage a box store frame, but know you won't be using anything that is suspect. For those who don't have a good AC/DC Tig and want to build using an aluminum frame they are quite helpful in the limited sizes available.

    I'm intending to use them for my Simplex side car to bike frame connections 1" Dom steel so I can run solo or convert to side car in a relatively short time and not have the bike frame cluttered up with brackets when running solo.

    A two piece adapter may hold firm with Locktite though I haven't tried it with a high power and low ratio engine and drive train, my Simplex runs a 56 tooth rear (really low with the 5 speed gearing & rendering 1st. gear a seldom used selection) and the Harley runs a 44 tooth...& the same light drive reduction from engine secondary offset sprocket cluster, although the Harley has some significant additional power mods compared to the stock CG 125 in the Simplex build, which I'd estimate add add 3 or 4 hp to the output. I bang into second and third occasionally and the setup hasn't bent any spokes to date.

    I initially set up my adapter against the spokes. My thinking being that if the hub adaptor slips it won't have that extra inch or so (at the hub) to pick up momentum from the drive train & slam into the spokes.

    Love the vids, sounds like you've got it tuned in. Rick C.
     
    #22 indian22, Aug 30, 2017
    Last edited: Aug 30, 2017
  3. msrfan

    msrfan Active Member

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    Great job Jeff, Looks and sounds cool. Always love all your details and parts you make. If you want something of good quality and looks, you have to make it yourself.
     
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  4. culvercityclassic

    culvercityclassic Well-Known Member

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    Thanks msrfan...always admired your craftsmanship too..
     
  5. culvercityclassic

    culvercityclassic Well-Known Member

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    IMG_4182.JPG IMG_4185.JPG IMG_4187.JPG IMG_4186.JPG IMG_4188.PNG IMG_4183.JPG Out today on my first big ride on the bike with Venice Motor Bikes and Bob The Turkman...30 mile ride, first stop was breakfast in Santa Monica next to the airport (great food) then south along the beach...That Venice Motor Bike is fast..so was the pace of the ride... Great times with good solid people...

    BTW the bike ran great with no issues....
     
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  6. culvercityclassic

    culvercityclassic Well-Known Member

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    IMG_5244.JPG IMG_5254.JPG IMG_4232.JPG IMG_4216.JPG IMG_4220.JPG IMG_4211.JPG IMG_4227.JPG IMG_4217.JPG

    Hey Rick, think I have the sprocket issue resolved, did a couple things you mentioned, thanks for the help.

    I have been on a couple decent rides on the bike and noticed the engine and cvt plate had issues, the motor was moving around a little too much and the cvt plate was flexing bad during hard acceleration. Added a couple supports, one on the head and another on the cvt plate to the rear motor mount. Made a big difference and put it on a good test ride today. A couple pictures which include the Porsche event at the Flying Museum in Santa Monica I stumbled upon on my ride.
     
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  7. indian22

    indian22 Active Member

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    Great pics of your ride outing with Norm. I always loved visiting Venice though my last trip was in the early '80's. You guys rolled good & looked great getting it done. Thanks for the museum photos. I was a Porsche guy from jump with a new 1972... 2.4 litre 911 S my first & sold my last pair in 1991 with a half dozen or so in between. "There is no substitute" yet I moved on with really only one regret: I always wanted a silver 356 Carrera coupe & just never connected with the right deal. Bucket list car for the Old Guy still. Maybe yours too!

    Building something that really works well (for what it is intended) is huge. I'm so glad the problem issues mentioned are being gathered in. I've used the head bolts as an attachment point for frame support since my purchase of a Cushman Eagle in '59 or '60. It had a small bracket that secured the cylinder to frame that kept breaking & the big bore engine would shake like an out of balance washing machine! I finally made one that held up to the stresses. Some well balanced engines may not seem to need cylinder support. but I think it a good idea anyway. Sometimes the answer lies in using the head...good solution on your bike.

    Keep building it adds some extra zest to your life & is a joy to others. Rick C.
     
  8. Tony01

    Tony01 Member

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    Looking good. So what is your final drive ratio not including the cvt? And is that a 6, or 7" driven pulley?
     

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