SkyHawk Aluminum Bike Frame GT2-A

Discussion in 'Spare Parts, Tools & Product Developement' started by Snookpoon, Jan 15, 2012.

  1. Snookpoon

    Snookpoon New Member

    I'm starting my first build and I have a GRUBEE 2011 SkyHawk GT5 66cc/80cc Bike Motor Kit and a Skyhawk Frame. I searched here but have not seen any builds with this frame. Has anyone had any sucess with it? I was looking at the shift kit that Sick Bike Parts sells as well. It's rather expensive but may be worth it to not have to deal with rear wheel issues that some experience. Are there other alternative shift kits that work well?
     

  2. gothicguy64

    gothicguy64 Member

    hi an welcome ...


    do u mean this ???
    132.jpg



    brad :likelots:
     
  3. Snookpoon

    Snookpoon New Member

    Hi, Thanks!

    I'm looking forward to sharing ideas and experiences with everyone here. Yes, that looks like the engine. The frame is different. I attached a picture. It has a built in half gallon gas tank and welded motor mount. I plan on trying to set it up as a motorized beach cruiser like you have there but with 4" fat bike tires that float through the sand for the beach. I'm thinking about using a NuVinici Hub as well for bullet proof smooth gear shifting.
     

    Attached Files:

  4. chainmaker

    chainmaker Member

    Those are pretty cool frames. They are made with 110mm and 135mm spacing of the dropouts which one did you get? That may influence you in which type of gearing you run either a coaster hub or a multispeed. Also from what Ive seen the more common fork stem doesnt fit I believe it uses the 1 1/8, but you can get a spacer for it if you have made up your mind on a set of 1 inch. Let us know.
     
  5. Snookpoon

    Snookpoon New Member

    I have the frame with the 135mm dropout and the engine mount. Thanks, I didnt notice that the stem was bigger at 1 1/8. That will save me from ordering the wrong size. I guess I should measure everything before ordering anything and assuming it's a standard size. It came with some bearings, a few cone shaped rings, and a 1/4" machine screw that has two small metal umbrella things threaded through it. None of it seems to fit anywhere on the frame. There was not a parts list or any instructions included either. Where do you get the spacer for the 1" stem?
     
  6. chainmaker

    chainmaker Member

    Choppers US has them , If you are looking for a Springer type fork check out the Jerry Springer that Felt Bicycles makes. It fits the bike.
     
  7. abikerider

    abikerider Member

    The nut with the two umbrella shaped things is called a star nut. It is used when installing a threadless fork (think modern bike forks and stems). It is driven into the steering tube of the fork with a special tool called a nutsetter where it stays and is used to tension the headset (steering bearings). If you use a fork with a threaded steerer tube which is less common with 1-1/8" forks, then you won't need it. Here is a link explaining it more.
    http://sheldonbrown.com/headsets.html
    The bearings and cones for them are probably the headset bearings and are probably for a threadless fork.
     
    Last edited: Jan 18, 2012
  8. abikerider

    abikerider Member

    In the picture the frame looks like bare aluminum. Is it painted or at least clear coated?
    I am interested in this frame for future builds. Please keep us updated.
     
  9. chainmaker

    chainmaker Member

    I think they come bare aluminum, they are nice looking frames and for the price not too bad of a deal if you think of the cost of an inframe tank. Id like to see how they hold up to some use.
     
  10. Snookpoon

    Snookpoon New Member

    Thanks for the help. The frame is bare gold colored brushed aluminum. There is no clear coat. It's kind of rough feeling. I plan on painting it. I guess you could buff out the aluminum and clear coat it. I'll post some pictures when I have it completed and let everyone know how it performs over time. I would love to hear from someone who has the frame already and is using it.
     
  11. kaniyrret

    kaniyrret New Member

    I'm working on one now, it's at about 80% more to follow....
     
  12. MotoMagz

    MotoMagz Member

    Any updates..I might pick up one of these frames.Would like to know what you think so far and whats working and whats not.
     
  13. kaniyrret

    kaniyrret New Member

    So far things are going well. I like the frame, had it powder coated. Installed the Felt springer front end, had a wheel set built and am still waiting on a few misc parts before I can continue. it's going to make for a very cool project.
     
  14. DeathProof

    DeathProof Member

    this guy hasnt been back since january to update people on this bike frame so does anyone else have this frame? im buying one for my next build and curious on the reviews. good? bad?
     
  15. Barry

    Barry Member

    Hello All,
    My frame just came in last week and with the exception of a small dent in the tank looks great. (the gold color is Alodine which is used so the paint will stick better and has some anti-corrosion value). So far, everything that I've on hand or ordered is the wrong size. Everything is larger on the frame. I started to install the shift kit this weekend and a note to all: Do NOT try to follow the University of You Tube installation directions if you are using a 4 stroke. I'm taking pics along the way and will happily share my progress (and pit-falls)
    Barry
    brthornton@yahoo.com
     
  16. Barry

    Barry Member

    Gt2-a

    Just finished mine, check it out..
    Barry Blackjack4s.jpg Blackjack2s.jpg
     
  17. Barry

    Barry Member

    Blackjack2s.jpg Blackjack4s.jpg Hello Snookpoon,
    Here's my GT-2 frame with the Sick Bike shift kit installed on a 4 stroke HS 142. The shift kit worked great but, I had serious issues with the Grubee 4G gearbox and also problems with the 3 speed rear hub set up due to the fact that a 275 pound fat guy has no business riding it.
    I have progessive pics of the complete build if you're interested.
    Barry
     
  18. abikerider

    abikerider Member

    I'm curious, what kinds of problems with the 4G belt drive and 3 speed hub were you having?
     
  19. Barry

    Barry Member

    Dear Abikerider,
    I believe that all my woes boil down to basic physics and power to weight ratios. Most "normal" riders probably fit into the 175 weight range. I'm asking the same components to withstand the test of an additional 100 pounds. First, the clutch must do double duty, the shift kit robs at least some of the available housepower, more power is lost throught the chain between the shift kit and the main crank and to add insult to injury, I'm asking this power to be transmitted through a chinsy bicycle chain to the rear hub. (even though I'm using a heavy duty, nickle chain). Went through three instances of chain stretch then finally chain failure and the rear hub kept jumping between gears (especially 1st and 2nd) Due to all the power loss, 3rd gear bogged the engine down to the point that it quit.
    I'm back to the drawing board with probably a Q-Matic gearbox and a straight shot back to a 44 tooth.
    Barry
     
  20. MotorBicycleRacing

    MotorBicycleRacing Well-Known Member

    If you use a 44 tooth sprocket with a Q Matic you won't be able
    to get out of your own way let alone climb any kind of hill.

    56 tooth or larger is the right sprocket for a Q Matic.
     
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