4 G T-Belt one-way bearing trashed.

Discussion in '4-Stroke Engines' started by lemont1, Dec 14, 2010.

  1. lemont1

    lemont1 Member

    I only got 50 miles on a new build and this bearing/sproket trashed on me. Does any one know where to get parts? Every where I have tried says they are out of stock. I read about a one piece sprocket (with out this one way bearing), where do I find this? Any one else have this trouble? I just want to ride my bike! Here are pic's of the sprocket.
     

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  2. MotoMagz

    MotoMagz Member

    Give this guy a try Ebay Item number: 400120290892 .He has all kinds of bearings.
     

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  3. ocscully

    ocscully Member

    I wasn't aware that the 4G Drives that used the one way bearing had made it to the US? Do all of the versions of this drive that fit the Tapered shaft motors use this bearing rather than the freewheeling output cog? bicycle-engines seems to have the 100t driven pulley without the bearing in stock. http://www.bicycle-engines.com/tooth-pully-p-334.html I wonder if you could substitute one of these? Seems to me that this breakdown should be covered under a warranty. Have you contacted bicycle-engines about getting a replacment pulley under warranty? It seems they would rob a part from a complete drice if need be for a warranty repair? Just some thoughts.

    ocscully
     

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  4. BiMoPed

    BiMoPed Banned

    Spooky Tooth is selling the 4G with the one way bearing

    I forgot to ask them if they had parts

    Why would bicycle-engines offer a warranty on a kit bought from a competitor?

     
  5. BiMoPed

    BiMoPed Banned

    If you bought it from Sppooky Tooth why isn't it covered by a warranty?
     
  6. ocscully

    ocscully Member

    I was under the impression that bicycle-engines was the sole US importer of Grubee Products, and also assumed that any other vendor who offered Grubee products were buying them thru bicycle-engines or drop shipping product thru bicycle-engines. I have never thought of Spooky Tooth as being a supplier of 4-stroke kits so the fact that they have recently started offering the newer 4G Drive as part of a kit escaped me. But no matter which vendor supplied the kit? the failed bearing should be covered under the warranty.

    ocscully
     
  7. BiMoPed

    BiMoPed Banned

    There are many Grubee wholesale distributors.

    Gasbike / kingsmotorbikes would be the biggest now with
    2 strokes and 4 strokes.
    Spookytooth was the sole importer of 2 stroke Skyhawks

    Several dealers used to import 2 stroke Starfires

     
    Last edited by a moderator: Dec 24, 2010
  8. lemont1

    lemont1 Member

    Thanks for all the input. I bought the kit from a small CA. company and don't know or really care where they got it, They did reply to my e-mail and said they will locate and replace the broken parts (no discussion about warenty so we will see). I am courious weather the sproket without the bearing (bike engines) will fit directly to the shaft. Is this an after market cause others have had the bearing fail? I apreaciate the help every one here provides and hope to see you on the road soon!
     
  9. ocscully

    ocscully Member

    The photo above of the 100t timing belt pulley is the one that came with the 2009 4G Drive units. It fits a 15mm keyed shaft and the key is 4mm.

    ocscully
     
  10. lemont1

    lemont1 Member

    :grin5:Just thought I would let you know what I ended up with. I tried a second one way bearing and it lasted about 20 miles (these are trash) the co. I got the kit from says they will have the new improved version available after Christmas. I found a 100 tooth pulley with no bearing (2009 version as ocscully mentioned) and it does fit but finding a belt was not easy. Played with some v-belts but getting tight enough not to slip to much puts to much stress on the set up to get the warm fuzzy feeling. It (100 tooth with T-belt)changed the gearing enough that with out changing the rear sproket I couldn't climb my favorite hill without a good running start. My final fix is in the picture attached. I AM NOT A WELDER! It aint pretty but it works fine. What is the reason for the one way bearing any way, other than selling replacments and ****ing me off. Thanx for all the help, I am on the road, done with this one and ready for the next project (a family trike build).
     

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  11. ibdennyak

    ibdennyak Guest

    heh heh, little grinder action and you'll look like a pro. Then again, who will se it. : )
     
  12. Stan4d

    Stan4d Banned

    This was posted in another area:

     
  13. birddog

    birddog Guest

    An improved version of the the one way bearing will be available soon as a free replacement from the dealer you purchased your kit from.

    When riding a 4G you will always need a one way bearing so that your chain can freewheel separate from the belt. If you didn't have it you would ruin your belt the first time you accelerated and then let off the gas. This is because your wheel mounted drive sprocket continues to spin and move the chain as long as the tire is spinning. If your wheel is spinning at one RPM and your belt at another, then something has to give. The only instance where it would not be necessary is if you had a heavy duty rear drive sprocket with a freewheel.

    Previous models contained the one way bearing in the 11 tooth drive sprocket of the transmission. I think the reason they moved it to the 80 tooth on the other side of the tranny had something to do with the tension/stress that it put on the belt when accelerating and decelerating. However, as you well know, they didn't make it heavy duty enough. The new one should solve the problem.

    Lemont1: If you don't have a one way bearing in your setup, I don't see your belt lasting more than one ride. Perhaps you have a one on the 11 tooth sprocket or on the rear wheel sprocket?

    Stan4D: I thought that Grubee post was deemed as Spam and removed?
     
    Last edited by a moderator: Dec 27, 2010
  14. Stan4d

    Stan4d Banned

    No, you are misinformed. I quoted it here to let others know as a courtesy. If there is a problem I can remove all references to it and leave the consumers hurting.

    For your information:
    45 Points: First post is vendor promotion; oblivious to rules. - Didn't even look at the rules. This results in a permenent ban.
    You might read here: http://www.motoredbikes.com/announcement.php?f=81&a=5
     
    Last edited: Dec 27, 2010
  15. MotoMagz

    MotoMagz Member

    parts for G4

    Sounds good.Will you be selling parts to switch the honda 4g set up to the new 10t non freewheel and the 80t pulley.I have sent many unanswered emails..
     
  16. birddog

    birddog Guest

    Guess I am still confused. If you banned the member for inappropriate content of the post in reference, then why would you repost it as useful information? I have read the forum rules announcement as well as the vendor rules and I see the point you are making--didn't follow the outlined procedure for a first post--just seems a little drastic. I certainly don't have a problem with it (I didn't ban anyone) as I think it is helpful relevant information to the members that have this model. If a free replacement on a defective part is not appropriate content for this forum, then I'm not sure what is.
     
  17. birddog

    birddog Guest

    I'll private message you a reply.
     
  18. Tom

    Tom Active Member

    He started a new topic in the "Introduce Yourself" forum to promote his company. We force members to first post an introduction for a reason.
     
  19. lemont1

    lemont1 Member

    I am new to these set ups but when you let off the throttle, the shoes contract in the clutch bell and dis-engages the motor from the drive. Will this not act as a free-wheel? I have 60 miles on the bike since I welded over the one way bearing with no problems other than the headlight falling off and me running over it at 35 mph (thought I was done) but that was my fault.
     
  20. lemont1

    lemont1 Member

    Oh. If the guy I bought the kit from reads this I would still like to get a "free" sample of this new one way bearing to try out Allthough I will need a new 80 tooth pully as I welded the last one! Ha!
     
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