Just got me a '03 CR85R

Discussion in '2-Stroke Machines' started by OK Rider, Aug 6, 2020.

  1. OK Rider

    OK Rider Active Member

    Yesterday I went and bought a 2003 Honda CR85R after discovering minimoto/miniGP. It came with Sun Rims supermoto wheels with new Q3+ tires so I'm super excited to say the least. First time owning a dirt bike and first time owning a 2 stroke so I've been researching how to properly maintain it all day, but it seems pretty straight forward so far, ordering some stuff this weekend like air filter cleaners, fuel/oil ratio funnel and some other stuff.. pretty stoked

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    Phl218 likes this.
  2. Phl218

    Phl218 Lemme ask my wife

    Noice
     
  3. beechkingd

    beechkingd Well-Known Member

    How do those things do as a minimotard? I know they don't have a powervalve so they weren't that popular as motocross bikes. The same as the KX65, but they seem to be very popular as mini's.
     
  4. Toadmeister00

    Toadmeister00 Well-Known Member

    I have had a couple of CR85s and a KTM 65 (non-powervalve '04) and they are good on kart tracks. Not much bottom end as you would expect, but they go pretty good if you keep the revs up.
     
  5. OK Rider

    OK Rider Active Member

    The no bottom end is very noticeable, I'm thinking of getting 55 rear sprocket, it currently has 49. Thoughts?
     
  6. Toadmeister00

    Toadmeister00 Well-Known Member

    What size is your front sprocket? I'm guessing a 14T with that 49T rear. Stock big-wheel gearing is 15/55.
     
  7. OK Rider

    OK Rider Active Member

    Front's 15T, mine's a big wheel
     
  8. Toadmeister00

    Toadmeister00 Well-Known Member

    15/49 is very tall gearing. I think I'd put a 14T front on and ride it. That will give you an idea of where you need to go from there. It has been a bunch of years since I had a CR, but I think I ran 15/52-54 on a 110cc supermini build depending on the track.
     
  9. OK Rider

    OK Rider Active Member

    Thanks, I guess I"ll get the 14/55 kit and play around
     
  10. Toadmeister00

    Toadmeister00 Well-Known Member

    14/55 will be way too short. I meant try 14/49, fronts being $10 vs. $50+ for rears.
     
  11. OK Rider

    OK Rider Active Member

    ah, I see your point, I was going to get the 14/55 so I can try mix and match, but you're right, I'll get the 14, I should be fine using the same chain that way
     
  12. Toadmeister00

    Toadmeister00 Well-Known Member

    Exactly, cheap enough and easy enough to swap out to test, and then make decisions from there.
     
  13. OK Rider

    OK Rider Active Member

    Sounds good, I'll go that route. Is motosport.com a good place to shop? this is my first dirt bike, first two stroke so I'm trying to figure out where has the best prices and is reliable
     
  14. Toadmeister00

    Toadmeister00 Well-Known Member

    Motosport, Rocky Mountain ATV or eBay.
     
  15. OK Rider

    OK Rider Active Member

    Thanks a lot!
     
  16. t500racer

    t500racer Looking for the Bad Teacher's thread...

    Rocky Mountain ATV>Motosport.

    Motosport used to be good, but they got bought out and have not been as good since. Most of their items seem to be backordered or delayed during this pandemic as well.

    Have been using RMATV with no problems or delays since.
     
  17. zx250r

    zx250r Well-Known Member

    Was this the one near Atlanta? If so let me know if you get rid of it ha
     
  18. OK Rider

    OK Rider Active Member

    Hahaha yeah that's it, I'll post on here if I decide to sell it
     
  19. OK Rider

    OK Rider Active Member

    What do you guys think for springs for this thing and oil weight for the front? RaceTech website recommends 0.46 front and 7.1 or 7.6 rear..
     
  20. Toadmeister00

    Toadmeister00 Well-Known Member

    What do you weigh? .46-.50 fork springs and 7.6+/- shock spring should be about right for a 180-200lb. rider.

    If the forks have been revalved for adult minimoto use, 5wt to 7wt oil is typically used. Sometimes you'll see someone just put in some stiffer springs and go to a 20wt (or heavier) oil. That's kind of a bandaid, trying to control the forks with the heavy oil instead of with correct valving.

    K-Tech has 40mm shorter supermoto fork spring and the required spacers, and a good selection of shock springs.

    www.gatorrimz.com has 70mm shorter .50 forks springs and 7.6 shock springs.
     

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