all year round mb?fat tire?

Discussion in '4-Stroke Engines' started by Zackiriyah, May 26, 2015.

  1. Zackiriyah

    Zackiriyah Member

    How are motorized fat tire bikes?how is it on pavement?.do you have any suggested bikes .or better bikes that I could go with for all year round use

  2. bluegoatwoods

    bluegoatwoods Well-Known Member

    I have little doubt that a fat bike would be good for winter and other rough surface use. But I think those tires are expensive. Plus chain clearance can be a bit of an issue.

    What I do for winter is to buy some studded tires. Even that's slightly expensive. But it works.
  3. Zackiriyah

    Zackiriyah Member

    isn't the frame size rim and tire bigger than your average bicycle?
    Studded tires you say?I'm going traveling so depending on where I'll be headed hopefully winter time I'll be on the south side of US
  4. bluegoatwoods

    bluegoatwoods Well-Known Member

    "isn't the frame size rim and tire bigger than your average bicycle?"

    Yes, they are bigger. There's no doubt in my mind that those bigger, wider tires must help with ride quality. But I have also found that a motor assisted bicycle will wear tires faster. Especially the rear. Those fat tires are notably more expensive than standard bicycle tires. So I'm a bit reluctant on that.

    But I might be overdoing it there. Okay, tires are more expensive. But if they don't break the bank, then maybe it's worth it.

    Also those wider tires are more likely than standard wheels and tires to rub against the engine chain. I think that most, if not all, fat bike builds require the builder to come up with some sort of off-set mount that moves the engine a bit toward the left.

    Not that I mean to be discouraging. These are just a couple of issues that I've become aware of by listening to others. And they don't sound like they're enough to kill the idea. I might even give it a try myself one day. I've thought about it.
  5. butre

    butre Well-Known Member

    skip the fat tire bikes, they're too expensive to keep up with. just get some 3 inch wide kenda flames and put them on any rim you like.
    Timbone likes this.
  6. KCvale

    KCvale Motorized Bicycle Vendor

    I consider Fat Tire bikes anything with tires wider than the 2.25" Balloon tires on big beach cruisers.

    I find 3" tires with non-aggressive tread to be most comfortable to ride and manage and 4" off road tires like this to be just a bit too much for road use.


    Beside being a bit much for road tires you can's fit squat in that center cavity but a big battery, in the this case a 1KW 48V LI and 1.8KW electric motor.

    Regardless of power source you are going to want to resign yourself to using the bikes right side drive to power the back wheel and not a new sprocket on the left for direct drive.

    That being the case you want a bike with a geared rear hub and good brakes already on it.

    The Sun Crusher with 3" tires is good bike with dual V-brakes, 7-speed and a huge cavity big enough for even a big 4-stroke engine but this one is a legal 48cc with and expansion chamber and shift kit and a real joy to ride.


    The Micargi Slugo is a pretty decent 7-speed with dual disc brakes.
    It will take a 2-stroke and 4-stroke as well.


    My latest fat tire fancy is the Fito Molena.
    So much so there is a new Grube GT2A in-tank frame based on the Fitos wheels and brakes in the works.

    It will take a 2-stroke and 4-stroke as well.
    Imagine this with the top tube being a 1/2 gallon gas tank.



    That 4-stroke shifter is the first 10G KCK shifter.

    As mentioned above, flats are a concern so you always want to put a good tire liner between your inner tire and outer tube.

    As far as road handling 3" rocks, especially with those Fito 3" Flame tires and HD Kenda tubes that come inside.
    You can feel the meat on the road in turns and running them with about #25 of air they really take a lot of the road out.

    Those are the basics, good luck on your build as some parts can be pretty challenging, but then again that is fun part, especially if you have a bunch of spare parts laying around ;-}
  7. 2old2learn

    2old2learn Member

    I'm picturing it with the built in tank and side covers with built in ram air vents cooling the engine and then pushing the heat down and away. Kinda incognito!
  8. The_Aleman

    The_Aleman Active Member

    I've put several thousand snow miles on bicycle in Alaska, Iowa, and North Dakota, had to do it on the cheap because I was poor most the time.

    The best inexpensive snow tire I have found is the Comp III/K50 tread pattern or clone that was put on millions of cheap bicycles.

    I'm sure most of you have seen this tread pattern :D They seem to be getting hard to find in 24" tho, and sizes larger than 26x2.125 are very rare.

    I've even modified those tires with "screw studs" for mean ice areas.

    Attached Files:

  9. Zackiriyah

    Zackiriyah Member

    Thanks guys this is all good to know.I'm not really sure I'm gonna go with this build but I do need to upgrade my frame and pretty much everything
  10. bluegoatwoods

    bluegoatwoods Well-Known Member

    My goodness, those are some beautiful bikes that KCVale posted, aren't they?

    I'm a little reluctant to spend a bunch of money on a bike. But bikes like that make it tempting. Maybe one day.
  11. Zackiriyah

    Zackiriyah Member

    I agree.kc sure knows how to work his magic
  12. 2old2learn

    2old2learn Member

    KC's doing some very impressive work and at the same time providing many of us timely, accurate, and insightful information. We are fortunate to have resources like him in our group and we need to encourage people to support him. No such thing as a free lunch!

  13. KCvale

    KCvale Motorized Bicycle Vendor

    Ahh shucks guys, you make me blush...
    Thanks for the kudos :grin5:

    Phoenix just happens to a be good place to build and sell quality MB's is all.
    I just worked myself with different things to become an alternative quality build source in a town littered with $200 2-stroke unsafe trash bikes.

    When the purse strings are not the main factor for someone, it is all about what is best for them.

    After so many different builds, this is my favorite part now guys...
    Build each customer 'the bike' for them on a custom basis with what will actually work on the bike and fit them.

    Bike Fit is the #1 thing for me.
    I have had customers from a 100# 4'8 woman to a 350# 6'6 man.
    If they can't ride the bike comfortably and safely before it has power, it won't get better with power, quite the contrary actually.

    I just ask a couple of crucial questions on my e-mail contact form to get the ball rolling.


    Balloon tires are popular again here in America, but present a problem to motorize.
    Actually not a problem, just another opportunity for innovation.

    Right up my alley as it where ;-}
  14. butterbean

    butterbean Well-Known Member

    It sounds like what you are saying is that because someone chooses to spend their time contributing to our hobby, it's every enthusiasts job to support him (by buying his bikes/parts?). While I appreciate the work he does, it doesn't make it my responsibility to support his choice of how he spends his time, and he does just fine without me. I don't think anyone else can build whatever kind of bikes they pretty much want to and sell them for a living. Sure, there are other guys who build a few bikes here and there, but kc is the only one I've seen literally go to a bike shop, pick out whatever bike HE wants to build, build it how HE wants to, and sell it for what HE wants to. Nobody else in our hobby can do that consistently. And like I said, I respect what he does. But I also feel like we can either continue being cheerleaders, or we can take off our tutu's and get in the game. I don't mean get in the game as far as selling bikes, I just mean take an example and improve the quality of our own builds. I started out barely knowing anything about mechanics, it took me about 6 months to get my first kit bike on the road and keep it on the road. That was 6 years ago. Now I've worked my way up to full custom. I'm building a non-kit bike from the bare frame up, including building my own wheels. And this isn't a bike that will be sold, it's just for me. In fact this bike I'm building is my dream bike, American frame, hydraulic forks, custom wheels, 4 stroke engine. My point is that there are too few people building at a high level when it comes to personal builds, and I'm trying to be one of those people. Building a high quality bike is not rocket science or black magic. It just takes a little learning and patience to do it right. Yes, kc is a highly skilled and qualified builder. But we all could be if we tried harder.
  15. 2old2learn

    2old2learn Member

    Nothing wrong with walking your own path. For those who prefer to purchase rather than innovate and build, they should check out a builder like KC and see if he has something they'd like. If you came to me wanting a custom hotrod, I'd have you call Chip Foose.
  16. butterbean

    butterbean Well-Known Member

    Truly great bikes are built, not bought.
  17. KCvale

    KCvale Motorized Bicycle Vendor

    Especially building your own wheels...
    That is one thing I simply don't have the patience and skill to do right, don't really care to learn, and wouldn't like doing kind of like under sink plumbing these days.

    'Dream Builds' for me have almost always been worth the money to me.
    My problem is the dream keeps changing ;-}

    Forums like this make everyone a better builder, they have sure helped me, I return the favor when I can.

    A competent shop helper is how I manage.
    Some things simply need 2 people to do right the first time in short order anyway, but even then we don't build and release a bike in one day.

    I always laugh at the MB kit promos of '2 hours and simple hand tools and your are done!'.
    We typically spend that much time just on the handlebars, brakes and cable matching.

    Pull cables are a mystery to many, and like with me spoking a wheel, don't want to know how or do it.

    Understandable, but to me handlebar layout and cable/wire management are the 2 easiest ways to bring home both a comfortable and safe rider experience, and either make or break a bikes visual appeal.

    The only pull cable you can't easily cut to fit is the throttle cable, it has nubs on each end.
    *yes there are ways to make your own nubs and custom cables but usually not needed for a nice clean look.

    I run the throttle cable best I can for a minimal protrusion in the front, then length match everything else to it.
    You really need a good cable cutter to make this easy, I paid like $45 for mine and after hundreds of cuts it still does the job.

    It's hard to explain in words how to size a cable and I don't have pics, but what you are sizing is the outer housing.
    This is what allows a pull cable to maintain a solid connection between cable ends.

    I put the handlebar lever on, run the cable where and how I want it to go, then mark where the excess cable is at the brake/shifter/etc.
    Then pull the sheath away from the lever a good 5" with the inner cable still attached and cut your marked end off, inner cable and sheath together.

    You may need to nip the end, or maybe use a stick pin for a clean round end of the sheath, but then just push the inner cable back in where it belongs, put and end cap on and you have a perfectly sized cable.

    The inner cable needs to protrude past the end of the cable sheath to attach!
    If you cut both cables in place you won't have anything to connect, that is why you slide the sheath down from the lever, to leave you the extra out the end.

    That is just one thing to up your game.
    Ignition wiring is another.
    Handle those two things right and it don't look like a bike with kit slammed on it, it looks and functions like it was to be there.

    Like ButterBean said, it's not rocket science, it is just taking the time to detail for the big picture as you go.
    Time consuming yes, worth it?
    Well, all I can say is it's worth it to me to do the best I can every time.
  18. butterbean

    butterbean Well-Known Member

    I bought a mini cable knarp from treatland, so I can use any throttle cable I want. I wanted orange cable sheathing to match my gas tank (tank is plastic and even if I could paint it a different color, I wouldn't, not because I'm a huge fan of orange but because it's transparent and I can see the fuel level inside the tank). So I got this mini cable knarp and 10ft of sheathing from pork chop bmx. The orange of the cable sheath isn't an exact match to the tank, but it's close enough I'm not that worried about it. Anyway, with the mini cable knarp, I can cut the large nub off just about any cable and use it as a throttle cable.
  19. butre

    butre Well-Known Member

    I don't bother with cable cutters, I just use a rotary cutter, usually my angle grinder. then I use a drill bit to clean out any plastic that melted on the inside. I also dip the ends of my cables in melted HDPE, the stuff is very slick and makes it very easy to get them through the cables, plus it does a pretty good job at keeping them from fraying.
  20. fattirejack

    fattirejack Member

    IMG_20150403_142956.jpg I have been riding my fat tire Beast since early spring. Around 1500 miles on it now, rear tire is ready for replacement. KC is right about the sunchaser being a better chose of frames, I heavily modified my Mongoose Beast frame. It sure is a joy to ride, which makes it well worth it to me.... ENJOY