Cutting Stencils and Tape really is boring... UPDATE

By: DJ_Critterus
March 25th, 2011
12:46 pm

Cutting Stencils and Tape really is boring... UPDATE

Like I said in the title, it really is boring and tedious. It's my least favorite part of the process. Sanding comes in a distant second to this.

So, I got a sticker meant to go over a car's tail lights. It's a flexible plastic that's not too flimsy.

53 Comments Read More

New Engine Finished

By: jaloos
February 18th, 2011
1:32 am

New Engine Finished

Picked up a new motor and decided to mod it up a bit before I dropped it into the bike. There was an issue with the air filter I had to deal with as well so figured I would do what I could to it.

279 Comments Read More

remember my mx500? now it has 6.5hp!

By: Bluethunder3320
January 14th, 2011
6:39 pm

remember my mx500? now it has 6.5hp!

i got a little bored of this bike, so $120 later, look what i have got! i spent half the day traveling to HF and the other half building.

opinions on how its coming along????? it is going fast.

281 Comments Read More

Post And Vids Of your Homemade Project.

By: swheels
December 13th, 2010
12:11 am

Post And Vids Of your Homemade Project.

Alright people that's right post'em up.They can be pics or vids of any of your homemade motorized machines.Big or small rc or not i'm talking scratch built......
This spark it when i saw Cam2's pic of his rc buggy he made in another thread.

So post up CAM2. I guess i'll show some rc stuff cuase i love rc stuff.LOL
Here's a pic of a scratch built 1/10 nitro drag car i did.I'll put up more detailed pics of it as i find them.I sold this car awhile back on ebay, i should have kept it.LOL
I also did this 1/10 nitro dune buggy It's fully detailed right down to gas'brake and clutch pedals plus a shifter and functional seatbelts.I also sold this one a wild back on ebay.

I built these waaaaayyyyy back in the daays.Oooo also the drag car had a .21 nitro engine with a 2speed tranny rearwheel drive.The rearend i used sorta looked like a ford 9'' rearend.The only thing these car was goodd for was lighting up the tires.LOL But it would take off like the fullsized street car pulling to one side when you got hard on the power.LOL

66 Comments Read More

The Rat - SpyGuy's Redneck-Style Cagllari/Daytona

By: SpyGuy
November 23rd, 2010
9:51 pm

The Rat - SpyGuy's Redneck-Style Cagllari/Daytona

"The Rat" (a work in progress)

Background: The Rat originally started off as a stock half-fairing 47cc Cagllari/Daytona. Purchased on craigslist.com for $80.00, previous owner had apparently used the bike as an offroad dirt bike. Front fairing was missing, seat and tank section was cracked in half behind tank and at end of seat - entire rear section missing. So begins the tale of "The Rat-Cag"......

I decided when I bought this bike that I was not going to restore it to original condition. Instead, the plan was to play with it, see what fun and goofy things I could modify on the bike, yet still have a perfectly functional bike to ride. Below is a list of the modifications currently on this bike, with more to come. *** NOTE: this is NOT meant to be a serious race bike - this bike was built "redneck-style" for fun.**

SPECIFICATIONS AND MODIFICATIONS:
Gas Tank
:
Hard-mounted to frame with brackets. Gas cap has been modified with a breather filter made from an in-tank gas filter. Gas tank was originally hard-mounted to frame using a hose clamp, which is visible in earlier pictures of the bike.
Seat:
Seat is glued down on piece of sheet metal, cut to fit shape of seat. Seat is supported by section of cut-down office keyboard track, and bolted to frame using the original holes.
Air cleaner:
Air cleaner is an Altoids Chocolate-Covered Cinnamon Mints box. The box has been drilled multiple times to allow air flow, and a piece of window screen wrapped in pantyhose protects the carburetor venturi. Oh, and the red gasket in the picture is from a toilet tank. (A second air cleaner, not on the bike, is made from an electric socket junction box.)
Gas filter:
A cut-down Volkswagon gasoline filter makes sure that the carburetor stays clean.
Muffler/exhaust:
An empty DuPont paint spraycan was modified for the exhaust by cutting off the bottom of the can. Tinsnips were used to enlarge the opening on the top of the can to fit over the front ring of the stock muffler, while the bottom of the can was cut to accept the stock muffler end cap. It is held on by the original spring and cotter pin.
Footpegs:
Footpegs are Mongoose BMX stunt pegs mounted on tapped original studs. This was a previous owner modification.
MISCELLANEOUS FEATURES:
Dremel wrench killswitch cover:
A spare wrench was bent and screwed down under the original-style killswitch, so I wouldn't accidentally bump it while riding.

150 Comments Read More

A2/FF Cag build with pics

By: D Mack
September 21st, 2010
9:52 pm

A2/FF Cag build with pics

Well to start off, when I first got the bike the first thing that I needed to modify or upgrade was the pull start. After about 30-40 times of yanking on it the cord just ripped right out. So, when I went to the hardware store to replace it I obviously wanted something of higher quality, along with better bolts.
http://i754.photobucket.com/albums/x...A2build027.jpg
http://i754.photobucket.com/albums/x...A2build028.jpg

Then next in line was that annoying rubber petcock piece that was causing all kind of problems. So I modified the petcock and fabricated an aluminum piece to replace the white nob.
http://i754.photobucket.com/albums/x...A2build018.jpg
And while I was doing that I replaced the fuel lines, filter, and installed my own shut off.
http://i754.photobucket.com/albums/x...A2build026.jpg
Ahh, much better now. With all of that done along with just about every bolt I could find to replace on the bike with a high quality bolt and LocTite on every thing I could get my hands on made a world of difference as far as reliability. Now on to the modding and tuning.

The first thing I did performance oriented was add BW triple stage reeds. Which was a good investment. Made throttle response much more crisp and made the top end power much smoother.

Next was to give the bike more air and fuel to get more power. So I installed a HP filter, did some carb porting, and rejetted up to .68mm from the stock .64mm. Which gave me very good gains in the whole rpm range, but most noticeable from low to mid rpm range.
Here are before and after pics of carb porting.
http://i754.photobucket.com/albums/x...tedcarb001.jpg
http://i754.photobucket.com/albums/x...tedcarb006.jpg
Hp filter with .68 jet installed
http://i754.photobucket.com/albums/x...rfilter003.jpg

Most recently I have added a 3rd bearing support gearbox with 7tooth pinion and High tension clutch springs to improve launch speed.
Here are some pics of the gearbox installation.
Bike with stock gearbox.
http://i754.photobucket.com/albums/x...A2build004.jpg
New gear box and comparison of the two.
http://i754.photobucket.com/albums/x...A2build001.jpg
http://i754.photobucket.com/albums/x...A2build005.jpg
New High tension clutch springs.
http://i754.photobucket.com/albums/x...A2build002.jpg
Process of putting new springs on. First pic is clutch with old springs. Then clutch after removal of old springs. Then new springs installed.
http://i754.photobucket.com/albums/x...A2build006.jpg
http://i754.photobucket.com/albums/x...A2build007.jpg
http://i754.photobucket.com/albums/x...A2build009.jpg

After installation of the clutch springs. I then installed my new gearbox.
http://i754.photobucket.com/albums/x...A2build015.jpg
http://i754.photobucket.com/albums/x...A2build016.jpg
http://i754.photobucket.com/albums/x...A2build020.jpg

After installing the springs and getting a chance to ride the bike. I noticed a big difference on how the bike launches. It builds quite a few more rpm's {i'm guessing at least a few thousand} before the clutch engages. Allowing much better take off.
Another thing I also did recently was remove the muffler packing on my exhaust. I don't care how loud my bike is, I think the louder the better. But my point of mentioning this is because after I removed it I had to increase my idle speed to get a stable idle. Like the exhaust packing restricts air flow. I have never heard anyone else say they have done the same thing, so that's something to think about.
http://i754.photobucket.com/albums/x...A2build011.jpg
http://i754.photobucket.com/albums/x...A2build012.jpg
Much more mod's to come. So I will keep posting.

37 Comments Read More

My cateye, comments welcome

By: mk2mike
July 6th, 2010
10:34 pm

My cateye, comments welcome

Basically a cateye w/ a Harbor Freight 2.5hp (REALLLY WISH I DID THE 6.5HP)

The hardest part was finding an easy way to do a sprocket set up. I went through a couple set ups but ended up doing a single #35 chain w/ 60t rear sprocket and 11t up front.

If anyone needs some help feel free to PM me if you have a project as well or post up here





Top speed is rather disappointing, according to my iphones speedo it says 39.4 mph (which is rather accurate)

But by far way more reliable then the stocker 2 stroke. And by far not as loud.

54 Comments Read More

Water cooled 50cc polini pocket quad build

By: benefield
June 9th, 2010
7:36 pm

Water cooled 50cc polini pocket quad build

this is just a mock up far from done . i have rode it a few times and it is dificult to ride with that much power . at any speed it pulls the wheels up because you sit up straight up un like a normal bike that has you leaning forward .these pics are about a month old . it will have different plastic that has a better looking shape .its all un painted and just put together enough to see how the frame will hold up . i have about 1300$ in it at the moment. enjoy and any ideas you may have please let them fly.

50cc polini
standard crank
3 shoe kevlar shoes
19mm dell
grc 50cc pipe
digatron tach dt-30
dwt wheels vega rain tires
ducati coil
bzm rad
bzm pump
custom + 6'' axle
custom spindles
6/68 bzm gears

108 Comments Read More

196cc cateye

By: FL_MINI
April 13th, 2010
4:46 pm

196cc cateye

I am starting to build a cateye with a honda gx200 motor with a 160 head, arc rod and no gov and it is 8" over on the swingarm

69 Comments Read More

Repairing and Strengthening a X15 Swing Arm

By: hglenn55
February 2nd, 2010
3:55 pm

Repairing and Strengthening a X15 Swing Arm

The don't call me Nutty P for nothing. I find myself stepping off a cliff more often than not when it comes to Mid Bikes. I'll try anything just to see if I can do it and if I can't my attempt let's me know my limits and what to tell the next fool :p

I got this swing arm from the Mid Bike National Champion (Monster). If you don't bin you win ain't that right! Anyway when we were in Dublin Georgia I noticed something about his swing arm didn't look right. Looking at it closer I noticed the sucker was badly twisted. When I say bad I mean "BAD"!

When he took the swing arm off later he also noticed it was cracked. Word got around and Swheel put the idea in my head to see about getting the swinger and experimenting on it. See there's a method to Swheel's madness he knows I can't resist a challenge and having one keeps me on my toes and moving. See Swheels I'm not as think as you dumb I am :D

I'll just post the photo's and if you have questions go ahead and ask. Oh and to let you know ahead of time. You don't have enough money in your pocket to get me to do this for you (Meaning all of you). Well you might but you might as well buy a new bike or motor for what I would ask to do this again. And until I get a Tig welder I'm not even thinking about trying.

42 Comments Read More