BAJA DIRT BUG

[Rat Rod]

 

[CCR]

Looking slick there pal !!!

Now you need to rig up a remote fuel tank with one of these ....

 

[Rat Rod]

Yeah...it would probably fit in that space behind the neck tube.

I ordered one of the Pro Mod Jackshaft kits last night for this thing to help haul my rear around. Right now it's underpowered, but if I throw a 6.5 on there, it would be scary fast and my kids and wife wouldn't be able to take it for a spin.

From everything I've read, the jackshaft really makes a big difference.

http://www.shop.hotrodminibike.com/Jackshaft-Systems_c3.htm

 

[CCR]

My brother had a custom sprocket made for his cheap china motored 20" stingray, think he paid $30. What's the advantage of the jackshaft vs swapping the sprocket out?

 

[Rat Rod]

My brother had a custom sprocket made for his cheap china motored 20" stingray, think he paid $30. What's the advantage of the jackshaft vs swapping the sprocket out?

Here's what the guy making them says...

I have heard you can find a larger rear sprocket blank and drill the bolt pattern to fit, But if you get the sprocket too large, it will dig into the ground when turning left and has clearance problems.

It just depends on how much you want to gear it down. We have found that a 8.86 to 1 ratio works great with the little 2.5hp eng and with that can offer some suprising performance with the stock engine.

Our Bolt on Jackshaft Kit will allow the engine to actualy rev out to a RPM where it can produce it's rated horsepower and also drasticaly improve clutch life. At 225lbs I can do 27mph on flat ground and climb hills the little bike would never of dreamed of with the stock gearing.

 

[outskirtscustoms]

I want one of these... No problem with torque.

Yes that is an old Cushman scooter thrown in a blender with a Sportster and a cup of awesome!

 

[CCR]

I wonder how much you could play with the "gearing" just by playing with the tire size

 

[Rat Rod]

I wonder how much you could play with the "gearing" just by playing with the tire size

Probably not enough. These tires I put on here were supposedly the biggest that would fit without getting in the way of stuff.

The guys that make the jackshaft claim that they offer low cost gears that you can swap out to play with the gearing if you want to.

Right now the poor little stock engine is underpowered with me on it and vibrates so bad your teeth just about fall out...chug chug chug chug!

Here's a side by side test they set up...

 

[Rat Rod]

Going to do the Predator 6.5hp engine swap....have my buddy do some pinstriping and then call it done.

 

[kram]

Mini bikes are fun. I have a couple of them. If you put the 6.5 hp motor on it don't let a kid drive it, lol. I picked this one up a while ago for $50 with a brand new clone 6.5 motor. The guy could never figure out the throttle, within 15 minutes of messing with it I had it running awesome. It's old and I've been slowly fixing all the damage that was done to it. It'll go about 45 mph, but it's the scariest 45 you'll ever do. Short wheelbase, tiny tires, and no suspension make for an interesting ride. It has enough power that if you throttle it from standing still it'll go over backwards. I let one of my sister in laws ride it and she flipped it over. All that being said it is about the most fun I've had for $50, just be careful who you let ride it.

The picture is kind of old. I cut off the old handlebars because they had been welded like a hundred times. I'm in the process of building a new fork for it. If you do put on the 6.5 hp motor I'd suggest a clutch brake too because that little drum in the back just isn't enough.

 

[Rat Rod]

Yeah...having second thoughts about the 6.5 clones lately.

 

[kram]

Don't get me wrong the clone is a ton of fun. I have one for both the wife and me and they are so fun. It's just a lot of power if a kid is going to drive it.

 

[whitefiretiger]

I'd add a wheelie bar with the 6.5 lol

 

[Dr. Tankenstein]

Honestly, it don't look broke to me. I'd get the striping done and ride it until I NEEDED a new motor, cuz I wore this one out!

 

[CCR]

Jon suggested screwing the throttle stop down if the kids are going to get on it after the swap

 

[Rat Rod]

This found its way into my garage this week. Traded that Sears muscle bike for it.

I'm keeping the 5.5hp OHV engine and Uncle Stretch may be getting the rest of it.

 

[whitefiretiger]

Digging the chopper look of the new toy.

 

[outskirtscustoms]

That would be killer stretched. HINT HINT!!!

Maybe dual engines like that other guy here that made the "Double Whammy" mini bike dragster.

Or if you wanna get really crazy...

 

[Rat Rod]

Swapped out the 97cc for a 196cc OHV from the Baja Warrior this week. Bike is much more fun to ride now.

 

[LukeTheJoker]

Sounds awesome, looking forward to a riding video!

Luke.