What is this thing on my wheels?

Discussion in 'General Questions' started by moun10biker, Oct 20, 2009.

  1. moun10biker

    moun10biker Member

    I have this thing on my tires. I have no Idea what is its, and if it is needed.
    It says "Falcon" on it. Do i need this, As I think it may affect the sprocket.
    The bike is made by Pacific, but I don't know the model name.

    Attached Files:

  2. fetor56

    fetor56 Guest

    It's your coaster brake arm...without it u would have no rear brake.
  3. moun10biker

    moun10biker Member

    I cant attach my sprocket on the rear wheel because of it. What do it do?
  4. scottyo

    scottyo Member

    I bent mine a bit to make it fit then I had to dremel the opening on the drive sprocket because the brake arm was touching the sprocket. Word of advice: assemble the back wheel and sprocket to see if you will need to dremel the hole larger. if there is still contact between the arm and the sprocket then dis-assemble and dremel to increase the hole's diameter.
  5. Al.Fisherman

    Al.Fisherman Active Member

    You will find out that after you remove the coaster brake arm to install the gear, the rear gear will not fit over the dust cover to the rear bearings. You have a couple of options. The first I don't like and there are some here that use this option and that is to do away with the bearing dust cover. The second option and the one that I did was to make the gear fit over the dust cover. This is not hard to do if you have access to a drill press. Some use a file, as a third option...good luck. I have a video as to how I did mine at home, took about 15 minutes including set up.


    Although I don't have eye protection on doing the video, I did in fact when I was doing the mod. I did the video after I had already made the mod.

    One more thing and that is I added a second brake clamp over that arm as insurance...you won't like what happens should that flimsily clamp fail. A worm gear hose clamp works well.

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    Last edited: Oct 21, 2009
  6. motorpsycho

    motorpsycho Active Member

    dude, if you don't know what that is...then how are you going to put a motor AND the rear sprocket on your bike, and keep it tuned and running right?
    you will need to remove the arm, put the sprocket on and then re-install the arm. you will need to either remove the bearing dust cover OR have the center of the sproket machined out big enough to go over the dust cover. The sprocket bolts might hit the arm, so you may need to slightly bend the arm, OR get the sprocket bolt holes counter sunk and use flat button head stle bolts instead of the ones that come with the kit.
    I hate to sound so harsh, but putting a motorized bike together, getting it running, and KEEPING it running good is not for someone who does not have mechanical knowledge. Not knowing what a coaster brake arm is scares me.
  7. HoughMade

    HoughMade Guest

    Fourth option- just trim the very edge off of the dust cover on a grinder or with a Dremel.

    Thanks to member Charlie for the pics:

    Attached Files:

    Last edited by a moderator: Oct 22, 2009
  8. AussieJester

    AussieJester Member

    4th and safest option put on a different hub and get a decent brake, you shouldnt be using ONLY a coaster brake on a motored bike in the first place IMO... if you don't have a decent front brake i strongly suggest you get one.

  9. moun10biker

    moun10biker Member

    That's why i'm here! There's a first time for every thing, and I am learning alot about mechanics, and how engines work. Thanks for your concern.

    I got the dust cap grinded enough so i can fit it on. Thanks for the pictures. They helped me a bit. I had to make the center hole of my sprocket larger from 3.5cm to 4 cm to fit it closer to the spokes. I also made the uncut rubber bushing thinner. I am going to get some front disk brakes, or get some high quality linear-pulls. I am adding a rear side pull caliper to add to the braking. Thanks a ton for all the help.
  10. Porkchop

    Porkchop Member

    You go for it pal ! We've all been 14 at one point in our lives. I don't understand what you're talking about as far as linear pull brakes, if that's the same thing as cantilever brakes, your bike will need to have mounting lugs for them. Chances are great that if the bike you're working with has a rear coaster brake, it will not have lugs to attach a cantilever brake. If you don't understand, let me know and I'll try to explain and/or post photos. Do your self a big favor and do you homework. If you start with a bike that's not a good candidate to start with, you'll end up getting discouraged and spend a lot of wasted time and more MONEY than it's worth. Better to spend a few dollars on a good bike to start with. Don't be afraid to ask for help here on the forum. Hope this helps.
    Last edited: Oct 25, 2009
  11. mattysids

    mattysids Member

    i went the lazy man's way
    i just put the sprocket under the dust cover
    works great!
    the dust cover also works as an alignment tool when needed
  12. motorpsycho

    motorpsycho Active Member

    let me just say that I would like to appologise for sounding like suck a jerk.
    It's just that I am so used to being around people who can build/fix/make ANYTHING, and sometimes it's hard for me to comprehend how someone doesn't understand something as simple as a bicycle.
    But, I do realize that there is a learning curve, and some people may not have ever messed with a bicycle.....let alone a 2 stroke motor.
    I guess that mechanics and fabrication are second nature to me, so when someone asks a simple question (simple to me) sometimes i think " what the.....?" and sometimes, i post my honest opinion, which could sometimes be a bad thing.
  13. GearNut

    GearNut Active Member

    It takes a a real man to step up to the plate and admit faults.
    You've done well.
    I have a similar problem, and I work a parts counter! Sometimes you gotta bite your toung and help teach the noobs rather than gasp and go OMG!
    It is all about the learning curve. We all started somewhere, not knowing a darned thing about what we were doing.
    This forum is awesome for teaching and learning!
  14. moun10biker

    moun10biker Member

    Thanks. It no problem at all. I got the tire all ready to go, and I am almost ready to fire it up, except for attaching the chain. I got to make it shorter, but there are other posts about that.
    I think linear pull brakes are just the same a v-brakes. No problem at all motorpsycho. lol
    I'm staying on top of things in school, and about the type of bike, I got a brand new beach cruiser after hours of searching off of craigslist. I got myself an auto detailing venture thats bringing in bank. Lots of work to get these goods.

    One more question, when talking about gauge in spokes whats that mean. I have an idea, but i'm not positive.
  15. AussieJester

    AussieJester Member

    Power too you lil man at 14 your attitude is better than alot of grown men i know, rather than sitting back vegging in front of the pc or exbox hours on end like alot of kids do your out there earning coin to buy your own gear rather than relying on mummy and daddy to fork out for it more teenages (and adults for that matter) could learn from you! kudos too you, your definitely in the right place, everyone has to start somewhere and your obviously dedicated and willing too learn to improve yourself and your abilities, your going to go along way in life mate, best of luck with the bike and your business venture.


    p.s OH gauge of spoke refers to the spokes thickness ie. the diameter of the spoke heres whats confusing too the smaller the number the larger the diameter, 10 guage spoke for example would be larger than a 12 gauge spoke. Same goes for measuring wire and metal tube sizes.
    Last edited: Oct 26, 2009
  16. Porkchop

    Porkchop Member

    Gauge refers to the thickness or diameter of a given material. The smaller the gauge number, the thicker or larger diameter the material is. For instance, a 12 gage spoke will be larger in diameter than 20 gage spoke. You can find conversion charts on the internet that will convert gauge measurements to inches and milimeters if you need. Hpe this is simple enough for you and that it helps.
    Last edited: Oct 26, 2009
  17. moun10biker

    moun10biker Member

    Makes perfect sense. I guess lower the gauge the better, for support. Is 12ga the standard size?
  18. Bowing to you, young sir. I remember at your age I was building a scooter using a discarded Maytag washing machine engine. Back in the day, rural areas that didn't have electricity yet could use big appliances powered by gasoline. The Maytag engines didn't have much power, but those babies were built like a tank and I bet they will run forever. I learned the same as you are learning. I wish you luck with your build and many hours of riding pleasure. 14 and 12 gauge spokes seem to be the norm.
  19. motorpsycho

    motorpsycho Active Member

    to shorten the chain you have to grind off 2 of the rivits on a link and pry the link off. then you just attatch your master link to bring the chin back together.
    you will want to grind the peice off so that you have a female link at each end of the chain so that the master link will go back on.
  20. Porkchop

    Porkchop Member

    Another alternative to adjusting chain length is to go to Walmart and buy a chain breaker for about $5.00. The breaker also comes with 2 different sizes of master links as well. One for single speed bikes and one for multi speed bikes.