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  1. #1
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    Default 18" outer rim and tire set ups for Scrambler/Tracker builds

    Any of you guys play around with these setups? My current tracker project is sorely missing an 18" rear and I want to make sure I do the right thing. I know I can get some Excel from Buchanan's....but is that the best choice? Any info would be great!


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    I have not messed with that rim. I was going to go the 17" rear route. lot of options and it gives a nice look. but I got an rear 18" mag AMF rim. I like the mag as opposed to spoke as it is less maintenance. but I like the look of your bike. I am headed the same direction. What bars are those? are they the burly or biltwell? I mean a set of the excel are gonna be about $800 after all said and done.

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    Burly bars.

    Have you seen Rusty Butcher (Justin's) bike?

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    info for your choice....
    Since you have the hub already Id go with a 17" as you will have a lot more tire options. Id also do aluminum to save weight, and that's what most dirt bikes use anyway
    I don't have a spoke hub and couldn't find anyone to make me a 17" wheel for south of 650 bucks. So i went DNA 18" billet hub steel rim

    Interesting side note. I run a 100/90 19 front and a 130/80 18 rear. Completely by luck that ends up making both wheels 26.1" So it should give the bike a rather balanced look

    (that link for RCYA...at 295 with the spokes, that's not saving much bread vs what i had a built wheel shipped to my door for)
    Last edited by teamcurtis; 05-08-2015 at 9:27 AM.

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    Default tires

    I took A LOT of time looking up tire sizes and choices. There are so many cool adv tires in 18 and 17" wheels that only have matching front of 21" (if you care that your rubber is matched)
    I wanted to stay at the stock width at the rear as a adventure bike and wide rears dont make sense to me.

    If you go 17" this tire looks tits
    http://www.motorcycle-superstore.com...port-rear-tire
    has the look, but a nice thick center block that wouldn't rattle your teeth out till you get to the dirt or snow.

    I should have mine mounted so you can see the overall look and stance by middle of next week (rubber arrives on Tuesday)

  7. #7

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    yeah i have seen Rusty's bike, nice. only thing I would change is how high I sit up on the bike, he looks like he sat a little low in the saddle to be comfy on long back roads and what not. I will also be putting in some pre load adjusters and progressive springs. maybe try to cut weight by getting a lithium battery and some other stuff. yeah I got a 17" alum rim but it is 4.5" a lil too wide to look good on the sporty. yeah, like team Curtis is saying 17" laced are kinda pricy. that is why I went with the amf mag 18".

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    I was thinking of maybe going the mag route....but its all about $.

    If any of you would like to sell your old hub...let me know....I think I would like to do this to a completely different hub, so I could go back and forth (if I hated it)

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    I am currently building a scrambler. Im in the same dilemma as you. I finally decided on a 19 inch rear tire and 21 inch front. I think this bike will mostly see dirt time.
    Im just going to build the wheels myself. Saves a ton of money that way. Ill use Harley hub rear, yamaha hub up front.
    The hoops and spokes themselves are not THAT expensive to buy, and building them yourself saves a ton.
    I love the look of that 18 inch rear mag, but mags are NO good in the desert.

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    I like where you are going! Right now Im on a hunt for the hub!

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    my wheel was 400 to the door.
    with spokes at around 150, a rim around 150-200 and then a used hub i was already knocking on 400

    why not re-lace the hub you have now?

    $125 hub
    http://www.kcint2.com/product/90-183...2000-2004.html

    just saw this 18" spoke for $313!
    http://www.kcint2.com/product/90-183...2000-2004.html

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    Quote Originally Posted by teamcurtis View Post
    my wheel was 400 to the door.
    with spokes at around 150, a rim around 150-200 and then a used hub i was already knocking on 400

    why not re-lace the hub you have now?

    $125 hub
    http://www.kcint2.com/product/90-183...2000-2004.html

    just saw this 18" spoke for $313!
    http://www.kcint2.com/product/90-183...2000-2004.html

    I possibly will, but my 16s got brand new rubber and Id like to swap em....thanks for the links! I wish it was a bit narrower. I want to run a 120 0r 130 at the max.

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    you can run a 130 on a 3.5" depending on the tire. most of the DS tires i was looking at has a 3.5 rim within spec for a 130 width

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    Quote Originally Posted by teamcurtis View Post
    you can run a 130 on a 3.5" depending on the tire. most of the DS tires i was looking at has a 3.5 rim within spec for a 130 width
    Im trying to run this guy: 120/80-18....Its a really good tire for the urban jungle I live in....but they dont make a 130 for it. I think 140 will hit my belt.

    http://www.revzilla.com/product/pire...ort-rear-tires

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    yeah that tire defn calls for a 3.0 rim
    http://www.pirelli.com/mediaObject/p...DB2013_low.pdf
    page 206

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    I got a hub! Im on my way.

    Quick question. Load Rating for tires. Now, not all the weight goes directly on the rear tire....now if I read the load ratings on tires.....how in the hell does a guy figure what is hitting the rear tire?

    the tires I am looking are between 582 and 783....Im kinda fat....so? do I need to be worried?

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    you should be fine.

    the bike stock weight 518 dry, so 558 with fluids? You weight 220? (kinda fat, but how tall?)
    Even if 75% of the weight was on the rear tire (which its not) that's only 575#
    778# if you just ride wheelies
    Just don't bring home any girls that weigh over 205# and you should be golden

    (what your asking i think is if its per tire or per vehicle. Its per tire)

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    Quote Originally Posted by teamcurtis View Post
    you should be fine.

    the bike stock weight 518 dry, so 558 with fluids? You weight 220? (kinda fat, but how tall?)
    Even if 75% of the weight was on the rear tire (which its not) that's only 575#
    778# if you just ride wheelies
    Just don't bring home any girls that weigh over 205# and you should be golden

    (what your asking i think is if its per tire or per vehicle. Its per tire)
    HAHA!!
    Well.....250 is how I role @ 6 foot 3....No passengers on this build/bike!
    So even at the lightest rating 5XXlbs...im good?

    How do you figure that out anyway!?

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    fluids weight about 40 lb (source, my brain)
    bike is rated at 518
    I use this resource for lil details
    http://www.totalmotorcycle.com/photo...sterCustom.htm

    I did all this research before for my truck, so i knew the principals from what i could trailer, tongue weight etc.
    (i double checked online and used tirerack live chat as well)
    From there its just math, which sadly is what i do for a living

    The range is because of air pressure and speed. You're safely in the middle of that range. Just don't run them at 15 psi @125 mph.
    How much you can carry on any give tire is depended on tire construction, and the speed you are traveling, and the air pressure you use.

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    Quote Originally Posted by teamcurtis View Post
    fluids weight about 40 lb (source, my brain)
    bike is rated at 518
    I use this resource for lil details
    http://www.totalmotorcycle.com/photo...sterCustom.htm

    I did all this research before for my truck, so i knew the principals from what i could trailer, tongue weight etc.
    (i double checked online and used tirerack live chat as well)
    From there its just math, which sadly is what i do for a living

    The range is because of air pressure and speed. You're safely in the middle of that range. Just don't run them at 15 psi @125 mph.
    How much you can carry on any give tire is depended on tire construction, and the speed you are traveling, and the air pressure you use.
    THANK YOU VERY MUCH FOR THE USEFUL INFO! I feel confident in my choice now:

    Pirelli Rear MT90 Scorpion AT 120/80S-18 Tire - 2045800 paired up with RSWM418 SUN WM4.5 (2.75) x 18" ALUMINUM RIM

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