Just 2 weeks ago I picked myself up a Baja DB 30 roller off Kijiji for $100.
I've had my box stock 2011 Honda GX200 since new and it's just been sitting so what better way to put it to use then in a Baja Dirt Bug swap. I just had to build one of these because it seems like almost every mini biker on here has one in some flavor plus they have some great features that you just cannot ignore.
Much thanks to 2SlickNick for sharing his 49cc pocket dirt bike front suspension swap. All in total you can have front suspension on a Baja dirt bug for around $60.
You can see in the pics that I was able to utilize 1.000" ID bicycle seat post clamps as a alternative to welding the fork tubes to each other. This has way more than enough static holding friction to keep these fork tubes in place. These clamps can be had at almost any bike shop.
I also discovered that a lot of the funky handling traits that these bikes are known for can be traced to the front wheel hub offset. I don't think many people have noticed but the stock front wheel hub is not centered in the fork legs, just look at the uneven spacer lengths!! Anyone that builds and understands motorcycle steering geometry knows this is a big "no effin way". I simply corrected this by finding a 6x3.25inch centered hub 1 3/8 OD bearing tubeless steel wheel and then replaced the 12mm front axle with a 1/2"x9" bolt and then used 1 3/8"x1/2" flange type wheel bearings.
Took her for her maiden spin yesterday and wow, that front wheel is a huge help!
With a 12t clutch and 70t rear sprocket we have a 5.8:1 reduction going on and it pulls very nice! I made my first OldMiniBikes warehouse purchase the other day, a stage 1 jet, header, air filter, springs,flywheel key upgrade kit. Should be here any day now!
I've had my box stock 2011 Honda GX200 since new and it's just been sitting so what better way to put it to use then in a Baja Dirt Bug swap. I just had to build one of these because it seems like almost every mini biker on here has one in some flavor plus they have some great features that you just cannot ignore.
Much thanks to 2SlickNick for sharing his 49cc pocket dirt bike front suspension swap. All in total you can have front suspension on a Baja dirt bug for around $60.
You can see in the pics that I was able to utilize 1.000" ID bicycle seat post clamps as a alternative to welding the fork tubes to each other. This has way more than enough static holding friction to keep these fork tubes in place. These clamps can be had at almost any bike shop.
I also discovered that a lot of the funky handling traits that these bikes are known for can be traced to the front wheel hub offset. I don't think many people have noticed but the stock front wheel hub is not centered in the fork legs, just look at the uneven spacer lengths!! Anyone that builds and understands motorcycle steering geometry knows this is a big "no effin way". I simply corrected this by finding a 6x3.25inch centered hub 1 3/8 OD bearing tubeless steel wheel and then replaced the 12mm front axle with a 1/2"x9" bolt and then used 1 3/8"x1/2" flange type wheel bearings.
Took her for her maiden spin yesterday and wow, that front wheel is a huge help!
With a 12t clutch and 70t rear sprocket we have a 5.8:1 reduction going on and it pulls very nice! I made my first OldMiniBikes warehouse purchase the other day, a stage 1 jet, header, air filter, springs,flywheel key upgrade kit. Should be here any day now!