Planet Minis

Blouder · 11-06-2009, 10:55 AM

Normally I dont buy junk. I usually do my research and check something over pretty good before I buy it. But I gotta say this guy got me. I was blinded by a couple of goodies and now I'm the proud new owner of a Extreme 125cc bike with a aftermarket swing arm and some pretty beefy looking forks. He did tell me there was an issue with second gear. And there is. Doesn't want to engage into second. But the rest of the bike looks like it was slapped together out of parts just lying around on someones nasty ass garage.

I need some carb help. What size carb should be on this bike. 125cc. It has a 22mm on it now, but it wasn't even bolted on tight and while cleaning it i found what looked to be someones left over salad from Burger King in the bowl and jets. What's the proper jetting for sea level?

Next question, is there a benefit to running 10" tires? Would the bike handle better for an adult with a 14" front and 12" rear?

Thank you for your time and help with my first Mini.

Bill

33comet · 11-06-2009, 11:18 AM

dont really know too much about carbs on those motors but yes it would handle alot better

weekendwarrior · 11-06-2009, 01:29 PM

post a few pictures

klxrider245 · 11-06-2009, 01:54 PM

ya man i would love to see it

monaghan · 11-06-2009, 02:12 PM

dont know much about the carb stuff.... but if you have a crf50 based bike the 12/10 is the proper wheel size... also alot more fun

MG577 · 11-06-2009, 02:25 PM

Yes the 12" in the front helps out alot with stablity

96Justin · 11-06-2009, 02:35 PM

nah keep er 10/10 the small wheels and squirllyness is what makes these mini's so fun

otherwise just buy a 250/450

MaXeD-OuT-PiT · 11-06-2009, 02:46 PM

I love how everbody want to see the bike... Well with a discription like that we all gotta see it. If it was me I would fix it, get it in good working conition then off it.

conant19 · 11-06-2009, 03:08 PM

i would run a 12/10 setup for a little better handling but still gets a loose makes it funner

nyray · 11-06-2009, 03:13 PM

I would put a 24 or 26mm carb on that piece.

96Justin · 11-06-2009, 03:33 PM

yeah I really wanna see a picture of it!!

PitRacerVince · 11-06-2009, 04:05 PM

Quote:

Originally Posted by 96justin

nah keep er 10/10 the small wheels and squirllyness is what makes these mini's so fun

otherwise just buy a 250/450

+1.

Blouder · 11-06-2009, 04:35 PM

I was wrong it has a 12" front 10" rear I have it in my truck I'll go take pic and post it. I had to buy some plastics on my lunch break. I just couldn't handle the way it looked with busted up ones. It has a Mikuni Carb on it too.

seth399 · 11-06-2009, 05:27 PM

Quote:

Originally Posted by Blouder

I was wrong it has a 12" front 10" rear I have it in my truck I'll go take pic and post it. I had to buy some plastics on my lunch break. I just couldn't handle the way it looked with busted up ones. It has a Mikuni Carb on it too.

I'm in the same boat, just got my first mini and find them annoying to work on compared to my 450/250. I got a thumpstar 125 though and it has 12/10 setup, the tires have really lopro knobs and its sketchy as hell in sand! fun though, I'm gonna pick up some real dirt tires with proper knobs

dirtbkr188 · 11-06-2009, 06:04 PM

If the carb that came on the bike looks like the one below, it is a 22mm Mikuni-clone carb that was standard fare for the Chinese bikes. The baseline setting at sea level was needle clip in the 3rd or 4th position from the top, a #100 or #105 main jet, a #17.5 pilot jet. The fuel screw should be 1-1/2 to 1-3/4 turns out from seated. Being that it is a fuel screw, you turn it OUT to richen the mixture, IN to lean it.

Blouder · 11-06-2009, 06:50 PM

Quote:

Originally Posted by dirtbkr188

If the carb that came on the bike looks like the one below, it is a 22mm Mikuni-clone carb that was standard fare for the Chinese bikes. The baseline setting at sea level was needle clip in the 3rd or 4th position from the top, a #100 or #105 main jet, a #17.5 pilot jet. The fuel screw should be 1-1/2 to 1-3/4 turns out from seated. Being that it is a fuel screw, you turn it OUT to richen the mixture, IN to lean it.

Thanks dirtbkr, thats the info I was looking for and thats the carb, mine says Mikuni on it. Do the knock offs? That bottom hole on the mounting face, is there vaccuum there? If my base gasket didn't cover would I have a leak?

dirtbkr188 · 11-06-2009, 08:53 PM

The Mikuni-clones say Mikuni up top by the carb cap, and Mikuni T/A something on the side, they are not real Mikuni carbs.
I don't know if there is vacuum at the hole you mentioned, are you missing the carb insulator that goes between the manifold and the carb flange? There should be a black plastic piece about a 1/4" thick that goes there. If you don't have the insulator, just make sure you put a thin light coating of grease on that o-ring to ensure a good seal when bolting up the manifold.

DGA · 11-06-2009, 11:48 PM

I have that carb on my SDG 107, it is made in japan so I think it is a Mikuni. I thought the idle screw was an air screw, at least it acts that way. The hole is an air port for the idle air, and the screw closes off or opens the air passage.

P.C. · 11-07-2009, 05:20 AM

i have that carb on a lifan 138cc,it came with a 95 main.i bumped it to a 97.any more than that and it bogs @ wfo.95 or 97 should work for the main jet.any bigger and you will be too rich.

Blouder · 11-09-2009, 10:56 AM

Ok here's a before and after pic.

After

11-06-2009, 10:55 AM	#1 (permalink)
Blouder PM Newbie Join Date: Nov 2009 Posts: 8	I bought a piece of junk Normally I dont buy junk. I usually do my research and check something over pretty good before I buy it. But I gotta say this guy got me. I was blinded by a couple of goodies and now I'm the proud new owner of a Extreme 125cc bike with a aftermarket swing arm and some pretty beefy looking forks. He did tell me there was an issue with second gear. And there is. Doesn't want to engage into second. But the rest of the bike looks like it was slapped together out of parts just lying around on someones nasty ass garage. I need some carb help. What size carb should be on this bike. 125cc. It has a 22mm on it now, but it wasn't even bolted on tight and while cleaning it i found what looked to be someones left over salad from Burger King in the bowl and jets. What's the proper jetting for sea level? Next question, is there a benefit to running 10" tires? Would the bike handle better for an adult with a 14" front and 12" rear? Thank you for your time and help with my first Mini. Bill

11-06-2009, 11:18 AM	#2 (permalink)
33comet PM Newbie Join Date: Jan 2008 Location: snellville, ga Posts: 55	Re: I bought a piece of junk dont really know too much about carbs on those motors but yes it would handle alot better

11-06-2009, 01:29 PM	#3 (permalink)
weekendwarrior PM Newbie Join Date: Jun 2009 Location: Welland Ontario Posts: 55 My Mood:	Re: I bought a piece of junk post a few pictures

11-06-2009, 01:54 PM	#4 (permalink)
klxrider245 3rd Gear Member Join Date: Nov 2004 Location: RIVERSIDE Posts: 1,014	Re: I bought a piece of junk ya man i would love to see it

11-06-2009, 02:12 PM	#5 (permalink)
monaghan 2nd Gear Member Join Date: Dec 2008 Location: Toronto, ON Posts: 958 My Mood:	Re: I bought a piece of junk dont know much about the carb stuff.... but if you have a crf50 based bike the 12/10 is the proper wheel size... also alot more fun

11-06-2009, 02:25 PM	#6 (permalink)
MG577 1st Gear Member Join Date: Mar 2009 Location: North county S.D. Posts: 244 My Mood:	Re: I bought a piece of junk Yes the 12" in the front helps out alot with stablity

11-06-2009, 02:35 PM	#7 (permalink)
96Justin 2nd Gear Member Join Date: Jan 2009 Location: Calgary, AB, Canada Posts: 770 My Mood:	Re: I bought a piece of junk nah keep er 10/10 the small wheels and squirllyness is what makes these mini's so fun otherwise just buy a 250/450

11-06-2009, 02:46 PM	#8 (permalink)
MaXeD-OuT-PiT 1st Gear Member Join Date: Jan 2009 Location: Bay Area, california Posts: 237 My Mood:	Re: I bought a piece of junk I love how everbody want to see the bike... Well with a discription like that we all gotta see it. If it was me I would fix it, get it in good working conition then off it.

11-06-2009, 03:08 PM	#9 (permalink)
conant19 1st Gear Member Join Date: Nov 2008 Location: Mtv Posts: 171 My Mood:	Re: I bought a piece of junk i would run a 12/10 setup for a little better handling but still gets a loose makes it funner

11-06-2009, 03:13 PM	#10 (permalink)
nyray PM Newbie Join Date: Oct 2009 Location: UPSTATE NY Posts: 6	Re: I bought a piece of junk I would put a 24 or 26mm carb on that piece.

11-06-2009, 03:33 PM	#11 (permalink)
96Justin 2nd Gear Member Join Date: Jan 2009 Location: Calgary, AB, Canada Posts: 770 My Mood:	Re: I bought a piece of junk yeah I really wanna see a picture of it!!

11-06-2009, 04:35 PM	#13 (permalink)
Blouder PM Newbie Join Date: Nov 2009 Posts: 8	Re: I bought a piece of junk I was wrong it has a 12" front 10" rear I have it in my truck I'll go take pic and post it. I had to buy some plastics on my lunch break. I just couldn't handle the way it looked with busted up ones. It has a Mikuni Carb on it too.

11-06-2009, 06:04 PM	#15 (permalink)
dirtbkr188 3rd Gear Member Join Date: May 2004 Location: New Jersey Posts: 2,970	Re: I bought a piece of junk If the carb that came on the bike looks like the one below, it is a 22mm Mikuni-clone carb that was standard fare for the Chinese bikes. The baseline setting at sea level was needle clip in the 3rd or 4th position from the top, a #100 or #105 main jet, a #17.5 pilot jet. The fuel screw should be 1-1/2 to 1-3/4 turns out from seated. Being that it is a fuel screw, you turn it OUT to richen the mixture, IN to lean it.

11-06-2009, 08:53 PM	#17 (permalink)
dirtbkr188 3rd Gear Member Join Date: May 2004 Location: New Jersey Posts: 2,970	Re: I bought a piece of junk The Mikuni-clones say Mikuni up top by the carb cap, and Mikuni T/A something on the side, they are not real Mikuni carbs. I don't know if there is vacuum at the hole you mentioned, are you missing the carb insulator that goes between the manifold and the carb flange? There should be a black plastic piece about a 1/4" thick that goes there. If you don't have the insulator, just make sure you put a thin light coating of grease on that o-ring to ensure a good seal when bolting up the manifold.

11-06-2009, 11:48 PM	#18 (permalink)
DGA 1st Gear Member Join Date: Dec 2008 Location: Indianapolis, IN Posts: 179 My Mood:	Re: I bought a piece of junk I have that carb on my SDG 107, it is made in japan so I think it is a Mikuni. I thought the idle screw was an air screw, at least it acts that way. The hole is an air port for the idle air, and the screw closes off or opens the air passage.

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11-07-2009, 05:20 AM	#19 (permalink)
P.C. PM Newbie Join Date: Apr 2008 Posts: 9	Re: I bought a piece of junk i have that carb on a lifan 138cc,it came with a 95 main.i bumped it to a 97.any more than that and it bogs @ wfo.95 or 97 should work for the main jet.any bigger and you will be too rich.

11-09-2009, 10:56 AM	#20 (permalink)
Blouder PM Newbie Join Date: Nov 2009 Posts: 8	Re: I bought a piece of junk Ok here's a before and after pic. After