BT-100 engine

Discussion in 'The Tavern' started by Greg58, May 8, 2019.

  1. Greg58

    Greg58 Well-Known Member

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    I just saw a YouTube video of a larger displacement engine call the BT-100, the bore is 50mm and has a 40mm stroke. It should be around 78cc so I guess we almost have a true 80cc class engine. Will be interesting to see one, hopefully someone here will do a test.
     
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  2. javy mcdees

    javy mcdees Active Member

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    advertised 40mm stroke but measures out 38or 38.5mm due to issues. 20190508_190953.jpg
     
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  3. zean

    zean Active Member

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    I've read here and/or heard that the more powerful BT-100 has issues with over heating due to the size of the piston and the cylinder-head design.
     
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  4. javy mcdees

    javy mcdees Active Member

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    use top shelf oil for mixing and 50:1 ratio. if the cylinders are plated then it is worthless to me cause those cylinders just do not last. cast iron is where it is at if you ride these engines daily. bike-am-commute.jpg.jpg
     
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  5. indian22

    indian22 Well-Known Member

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    Ditto the BT100 test Greg. Zeda has done quite a lot recently with the CG motor design. I'd be interested in how good the machine work is on the case inducted billet aluminum block/engine they're offering. I've not seen any specs to this point.

    Rick C.
     
  6. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

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    Zeda is just one of several dealers for the new made in USA billet cases.
     
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  7. ru14real

    ru14real Member

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    Whom are the other ones? So far the only one I have seen are the Zeda's.
     
  8. javy mcdees

    javy mcdees Active Member

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    facebook motorized bicycle pages will have other sources of billet cases. I still have about 5 day ban left from a 30 day vacation for very disturbing memes I posted. but not this one.
     

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  9. indian22

    indian22 Well-Known Member

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    Yep MBR I recall you posted a nice photo of a variety of U.S.A. billet blocks recently...so both 4 & 2 stroke cases/engines are available.

    Javy I have no idea of what might constitute objectionable material on any site or information source at this point.

    Rick C.
     
  10. Greg58

    Greg58 Well-Known Member

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    Javy what is the picture you posted of? From everything I can find the 100 won’t be available till after June 1, do you have a inside track to a supplier?
     
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  11. kelly dean

    kelly dean Active Member

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    what I've seen of that big bore it has a one piece jug/head. I like more room to really mess things up
     
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  12. tothebeach

    tothebeach New Member

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    Yes I know where you can get one . Its in BC Canada a place called Zoom Bicycles . There gonna stop selling engine kits altogether so now is the time to get one if you want one . 320.00 Can .
     
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  13. tothebeach

    tothebeach New Member

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    LOL I now have 3 of them . I do like these motors , they are strong , damm near leak free , vibration is minimal. So far has been reliable too , Ive had mine for 3 or 4 months and ride every day . Its been fine no problems at all !!!
     
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  14. javy mcdees

    javy mcdees Active Member

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    first I have heard good news about a 100 doing good.
     
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