Planet Minis

weekendwarrior · 10-28-2009, 07:50 PM

I recently had raced a little a 8 year old on his 2003 xr 70 which was completely stock and ended up getting beat on the top end on my modified z50. over the winter season i am taking my z apart to do some "tweeking" and hopefully come in the spring time i tell "whose your daddy

"

opponent:
8 year old boy
4'5 55-65 pounds ?
completely STOCK 2003 xr 70
stock sprockets and tires

myself
_ _ year old boy
5'11 135-140 pounds ?
1974 Honda z50 with zongshen 125/4 speed manual/22mm mikuni
11/37 gear 3.5x8

how do i take this little guy down LOL

i was planning to put snowhog tires on and to mess around with some sprocket ratios

any help would be great

jkg2003 · 10-28-2009, 08:14 PM

Im waiting to see the results of this thread, ive got a 72 ct that had 14/45 sprockets and now I just put in a lifan 125, so im wondering the same on sprockets

cdoublejj · 10-28-2009, 08:53 PM

get a bigger carb for your 125 also talk to terry about an akunar piston they will add serious compression. and maybe a cam would be nice but, only if you get the bigger carb will the cam be any good.

ducatilover · 10-28-2009, 09:10 PM

You might be geared low. Try a 15t counter sprocket. 11 is way small.

110streetlegal · 10-28-2009, 09:16 PM

Quote:

Originally Posted by ducatilover

You might be geared low. Try a 15t counter sprocket. 11 is way small.

x2 on that

RAZZO · 10-28-2009, 09:19 PM

11/37?! 16/34 right and lay his PB&J eatin ass to waste now! LOL! Your top end will be over 50mph. You got the ponies, use them.

mexicanyella · 10-28-2009, 11:05 PM

Even my stock 50 would run out of gear with 11/37, I bet.

Did you at least pull some 3rd-gear wheelies and shame the little twerp that way? I hope so. Have you no self-respect?

firepower354 · 10-29-2009, 08:05 AM

Post is not as interesting as the title would suggest.

weekendwarrior · 10-29-2009, 02:02 PM

Quote:

Originally Posted by mexicanyella

Even my stock 50 would run out of gear with 11/37, I bet.

Did you at least pull some 3rd-gear wheelies and shame the little twerp that way? I hope so. Have you no self-respect?

i just put the original gearing from the stock z50 motor just to get me around but then i realized how much torque it had i was amazed. but now i think im done with torque and wheelies and wanna focus on top end

weekendwarrior · 10-29-2009, 02:04 PM

Quote:

Originally Posted by firepower354

Post is not as interesting as the title would suggest.

sorry

weekendwarrior · 10-29-2009, 02:05 PM

Quote:

Originally Posted by RAZZO

11/37?! 16/34 right and lay his PB&J eatin ass to waste now! LOL! Your top end will be over 50mph. You got the ponies, use them.

is 16/34 good ?

weekendwarrior · 10-29-2009, 02:05 PM

Quote:

Originally Posted by cdoublejj

get a bigger carb for your 125 also talk to terry about an akunar piston they will add serious compression. and maybe a cam would be nice but, only if you get the bigger carb will the cam be any good.

what size carb do you suggest and who is terry ? :S

chasetheface123 · 10-29-2009, 02:34 PM

Throw in a firepower 192...

tmas · 10-29-2009, 02:47 PM

Quote:

Originally Posted by weekendwarrior

what size carb do you suggest and who is terry ? :S

26mm carb. Terry is Firepower in post #8. Vendor on PM.He will help you with the smackdown.
tmas

weekendwarrior · 10-29-2009, 02:58 PM

thanks alot, much help appreciated. is there any vendors from ontario ?

tmas · 10-29-2009, 03:14 PM

Quote:

Originally Posted by weekendwarrior

vendors from ontario ?

No, I think all vendors will ship to Canada.
tmas

conant19 · 10-29-2009, 03:17 PM

i had a couple friends that put those snow hawgs on and didnt like them said it robbed all the bottom end. my 2 cents

mexicanyella · 10-29-2009, 03:38 PM

Give some realistic thought to what most of your riding terrain is like before you choose sprocket sizes. Look at the gear ratio calculator here in the Tech sticky. Your motor could probably pull 16/34 just fine, but if you want to ride rougher terrain you may want a lower overall ratio in first than tall final drive gears like that will give you. If you ride on open terrain or the street, it won't matter much, maybe. I ride a lot on farm pasture with deep livestock footprints baked into it, plus I'm heavy, plus I only have about 2 hp, so a low first gear is pretty essential for me even at the expense of top speed. If I geared it up for more speed, even if I had the power to pull it easily, I'd find my bike less useful most of the time when I need to go slow around the farm.

grm · 10-29-2009, 04:08 PM

Minimob in Winnipeg, Manitoba, is only a Province over...and they've been very helpful sourcing all the stuff I want for my build...

Cheers,
Greg

Quote:

Originally Posted by weekendwarrior

thanks alot, much help appreciated. is there any vendors from ontario ?

weekendwarrior · 10-29-2009, 07:04 PM

Quote:

Originally Posted by grm

Minimob in Winnipeg, Manitoba, is only a Province over...and they've been very helpful sourcing all the stuff I want for my build...

Cheers,
Greg

yeah i checked them out and they are i think they are going with

10-28-2009, 07:50 PM	#1 (permalink)
weekendwarrior PM Newbie Join Date: Jun 2009 Location: Welland Ontario Posts: 55 My Mood:	beat by a school boy I recently had raced a little a 8 year old on his 2003 xr 70 which was completely stock and ended up getting beat on the top end on my modified z50. over the winter season i am taking my z apart to do some "tweeking" and hopefully come in the spring time i tell "whose your daddy " opponent: 8 year old boy 4'5 55-65 pounds ? completely STOCK 2003 xr 70 stock sprockets and tires myself _ _ year old boy 5'11 135-140 pounds ? 1974 Honda z50 with zongshen 125/4 speed manual/22mm mikuni 11/37 gear 3.5x8 how do i take this little guy down LOL i was planning to put snowhog tires on and to mess around with some sprocket ratios any help would be great

10-28-2009, 08:14 PM	#2 (permalink)
jkg2003 PM Newbie Join Date: Oct 2009 Posts: 47 My Mood:	Re: beat by a school boy Im waiting to see the results of this thread, ive got a 72 ct that had 14/45 sprockets and now I just put in a lifan 125, so im wondering the same on sprockets

10-28-2009, 08:53 PM	#3 (permalink)
cdoublejj 3rd Gear Member Join Date: Oct 2008 Location: St.Joe MO Posts: 1,367 My Mood:	Re: beat by a school boy get a bigger carb for your 125 also talk to terry about an akunar piston they will add serious compression. and maybe a cam would be nice but, only if you get the bigger carb will the cam be any good.

10-28-2009, 09:10 PM	#4 (permalink)
ducatilover 2nd Gear Member Join Date: May 2008 Location: Peoria, AZ Posts: 621 My Mood:	Re: beat by a school boy You might be geared low. Try a 15t counter sprocket. 11 is way small.

10-28-2009, 09:19 PM	#6 (permalink)
RAZZO Old School Z50s Join Date: Jun 2005 Location: NEW JERSEY PINELANDS Posts: 1,968 My Mood:	Re: beat by a school boy 11/37?! 16/34 right and lay his PB&J eatin ass to waste now! LOL! Your top end will be over 50mph. You got the ponies, use them.

10-28-2009, 11:05 PM	#7 (permalink)
mexicanyella El rey de los puntos Join Date: Aug 2008 Location: Troy, MO Posts: 972	Re: beat by a school boy Even my stock 50 would run out of gear with 11/37, I bet. Did you at least pull some 3rd-gear wheelies and shame the little twerp that way? I hope so. Have you no self-respect?

10-29-2009, 08:05 AM	#8 (permalink)
firepower354 Advertiser Join Date: Oct 2006 Location: Flint MI Posts: 10,987 My Mood:	Re: beat by an asian school girl Post is not as interesting as the title would suggest. __________________ If it has my name on it I did it;) FirepowerMinis.com Custom FPM parts and engines. Parts and service for all makes. Honda Trail Bikes parts and accessories. Pitster/Piranha/Thumpstar bikes, parts, engines and accessories.

10-29-2009, 02:34 PM	#13 (permalink)
chasetheface123 Chuck Norris for president! Join Date: Nov 2007 Location: Boyne City Michigan Posts: 4,811 My Mood:	Re: beat by a school boy Throw in a firepower 192...

10-29-2009, 02:58 PM	#15 (permalink)
weekendwarrior PM Newbie Join Date: Jun 2009 Location: Welland Ontario Posts: 55 My Mood:	Re: beat by a school boy thanks alot, much help appreciated. is there any vendors from ontario ?

10-29-2009, 03:17 PM	#17 (permalink)
conant19 1st Gear Member Join Date: Nov 2008 Location: Mtv Posts: 171 My Mood:	Re: beat by a school boy i had a couple friends that put those snow hawgs on and didnt like them said it robbed all the bottom end. my 2 cents

10-29-2009, 03:38 PM	#18 (permalink)
mexicanyella El rey de los puntos Join Date: Aug 2008 Location: Troy, MO Posts: 972	Re: beat by a school boy Give some realistic thought to what most of your riding terrain is like before you choose sprocket sizes. Look at the gear ratio calculator here in the Tech sticky. Your motor could probably pull 16/34 just fine, but if you want to ride rougher terrain you may want a lower overall ratio in first than tall final drive gears like that will give you. If you ride on open terrain or the street, it won't matter much, maybe. I ride a lot on farm pasture with deep livestock footprints baked into it, plus I'm heavy, plus I only have about 2 hp, so a low first gear is pretty essential for me even at the expense of top speed. If I geared it up for more speed, even if I had the power to pull it easily, I'd find my bike less useful most of the time when I need to go slow around the farm.

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