Rdp

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About Rdp

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  1. Rdp added a post in a topic GY6 Hybrid Rebuild   

    Indeed he does, but alas, he doesn't ship internationally 😞
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  2. Rdp added a post in a topic GY6 Hybrid Rebuild   

    What you can see on the intake side is a pulley and belt drive. This provides the reduction to drive a propeller - as I said, the motor is used in an ultralight aircraft.
    I read your thread on pistons, very interesting. I was interested in going to a forged item, but couldn't find anyone selling a 62mm one on line that would ship internationally.
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  3. Rdp added a post in a topic GY6 Hybrid Rebuild   

    Here's a few pics. Sorry about the formatting, sent from my iPad. As you can see, the engine is a bit of a hybrid, using both custom and standard GY6 parts. It is used to power an ultralight glider. 
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  4. Rdp added a post in a topic GY6 Hybrid Rebuild   

  5. Rdp added a post in a topic GY6 Hybrid Rebuild   

    Ah yes, been a while since I checked in. The build went well and the motor had its first serious run last weekend. All good. As I said above, I was contemplating a full rebuild with new everything, but in the end just replaced the crank, cylinder and piston. I live in Australia and international shipping of multiple parts is incredibly expensive as it is calculated on each item individually and cannot be combined. Shipping on just the bits I replaced was more than $150!!!
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  6. Rdp added a post in a topic GY6 Hybrid Rebuild   

    Thanks for the advice. I went with a Taida 62mm kit with a cast piston and kept everything else as it was. The 62mm BBK was quite hard to find - there were loads of 61 and 63 around, but not many 62 versions. The build is currently underway. 
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  7. Rdp added a topic in Projects you're working on   

    GY6 Hybrid Rebuild
    Seeking some advice from the collective wisdom on the forum. I am rebuilding a microlight engine that is based on GY6 internals. It has some custom machined parts, but appears to be mostly standard GY6. The issue I have is that none of the parts have any identifying markings, so it's hard to know exactly what configuration has been used.Here are some measurements
    The crankcase has been machined to 65mm. The bore is 62mm and it appears to be a standard crank with a stroke of 58.5mm. This gives a displacement of 175cc.
    Stud spacing is 54mm (A block)
    Cylinder height (base gasket to head gasket) is 69.4mm
    Head height is 73.23mm
    Cam chain is 92 links
    Two valve head IN 26.5mm EX 23.2mm
    Camshaft unknown, but it has a slotted drive sprocket
    Carb bore is 24mm.
    I am thinking of using all Taida parts for the rebuild. Looking for reliability rather than more power.
    I have already ordered a 58.5 (standard) Taida crank from MM.
    Contemplating fitting a X13 - Taida GY6 Cylinder 62mm 174.5cc Big Bore Kit any advantage is going to the X14 forged piston?
    What length studs do I need?
    Is 92 links the right length cam chain for the Taida head?
    Anything else I should think about?
    Many thanks
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