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
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.
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.
The no bottom end is very noticeable, I'm thinking of getting 55 rear sprocket, it currently has 49. Thoughts?
What size is your front sprocket? I'm guessing a 14T with that 49T rear. Stock big-wheel gearing is 15/55.
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.
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
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
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.
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..
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.