Mini Dirt Bikes, Pit Bikes Forum
Home UserCP Members Register Calendar FAQ

Go Back   Miniriders.com.au : Aussie Mini Bike Forum > Mini Forums > Tech Talk


Tricks of the trade

Tech Talk


Reply
 
LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 24-06-2007, 01:50 AM
unit_mx's Avatar
Senior Member
 

Join Date: Oct 2006
Location: Newcastle & Telly point
Posts: 1,321
Send a message via MSN to unit_mx
Tricks of the trade

Lets face it most guys who own a china are either a tightass or have actually little money to spend on their dirt scooter.After handing all your cash over to mr wong their on ebay or some other semi Australian citizen with a 3month visa your left with next to nothing in terms of cash in ya wallet so to gain the most out of your new pride and joy for basically zilch i've slapped up a few ways that i have learn't to do some topshelf mods that require little dosh.

THE LEVER PERCH BUSHING
PURPOSE: levers and lever perch's are the most commonly broken part on all motorcycle this is due to there vunrability to hitting the groud when crashing due ,they snap because the perch fails to spin move on the bar however factory teams have used a secret way to prevent this brakage from happening by using a works connection etc rotating bushing (costs around $40) or by using teflon plumbers tape

HOW TO DO IT:
1) If you dont already have the common teflon plumbers tape go down to bunnings and buy some for around $2 ,it looks like this:
http://www.fibreglast.com/images/contentimages/528.jpg

2)take of your clutch and/or your brake master cylinder/lever perch and wrap the tape around 5 or more times where your perch goes making sure the tape sticks ,then rub the tape once done so that it becomes smooth and bonds together.

3)put your perch back on ,fit it correctly.Put some thread or nut lock (loctite ,permatex) on the 2 bolts and tighten them up some there isn't a whole lot of freeplay but enough so that you can move the perch up and down on the bar.And woolah you have just made your self a sweet lever bushing

FACTORY LOOK CUT AWAY IGNITION COVER
PURPOSE:Most guys go out and buy a cutaway ignition cover cause it looks trick ,you can remove the front sprocket without removing the casing and you can clean out all the mud build up and shit easily.However rather than buying a new cover simply just get the old one and give it some time with the angle grinder

1)Take the ignition cover off the bike after the bike is clean.
2)See on the inside of the sprocket cover where there is a peice of metal seperating the sprocket cover from the rotor cover you will be cutting off the sprocket side
3)Get a hacksaw and cut ruffely off the sprocket cover making sure you have left all the bolt holes untouched
4)now angle grind the cut smooth running close to the rotor cover wall ,dont cut off the bracing though we file around this later
5)file the bit where you angle grinded smooth ,use a round file to get that half cirle look on the cover
6)sandpaper it really smooth then get a scouring pad and polish it up so that it looks factory ,now you have a sweet cover for nothing


LOCKWIRE YOUR GRIPS
PURPOSE:It is 100% essential to have total control of your bike when riding it and the things you hold onto called grips have a tendancy to sliparound called grip throttle ,it pisses everyone off so to prevent this is actually very very simple

1)remove the grip of you bar and throttle tube
2)clean surface
3)if you have a gay throttle like mine it will have raised bumps on the tube ,file and sand these down so its flush with the rest of the tube ,clean again
4)clean inside of grip
5)get some ya Mums ,sisters ,Wife's hairspray or spray adhesive and spray the inside of the grip and on the bar and a tiny bit on the throttle tube .Doing this will act like a grip glue and will be real easy to slide onto the bar.Allow 10 mins to slightly dry
6)Tool time.Grab your vice grips and tighten so they lock when squeezed in
7)Grab some soft wire ,copper wire or stainless wire 0.5mm thick or 0.75mm thick and cut it in 16cm in lenght (do this 4 times)
8)get one strand of wire and wrap it around the grip about 2cm (some grips have groves for the wire) in from the end of the grip twice making sure that both ends of the wire are at the bottom of the grip.make sure that the wire runs parrelel next to each other and does not cross over
9)now get your vice grips and clamp the two bits of wire together and pull the wire downwards and twist anti-clockwise till the wire is tight and there is no slipping
10)if the wire is tight around the grip cut the end of the wire where you twisted it with pliers ,try and cut as close to the bottom of the twist as possible
11)now with your pliers push the remaning twisted bit of the wire into the grip so that it is out of harms way
12)repeat process on both ends of the 2 grips.No more throttle grip for you

POLISH INTAKE MANIFOLD
PURPOSE:Australian Dirt Bike magazine said that this is a very effective mod for very little money or nothing at all .The purpose is to remove the rough castings left inside the intake mainfold by polishing to give a noticable change in throttle response without using a drell etc
1)Remove carby and bolts from the base of the intake manifold at the head of the engine
2)Put a clean rag over your engine head to stop shit gettin into your engine
3)measure the diameter of the engine head inlet and the manifold inlet part of the carby ,write it down as the we will port this out to match the two inlets
4)grab some 20grit sandpaper and get ya index finger in there and sand hard ,puting in a protected vice is the best way.
4)this will take along time to smooth out the castings and to match either end of the inlets but its worth it ,so be patient
5)Now once you have polished it with the sandpaper it should be almost silky smooth ,so now you get the scouring pad and make it silky smooth
6)Scrub clean with a mild detergent
7)get a cut up optical lens cleaning rag or similar add some metal polish to it and polish till its smoother than a babys bum
8)put all the carby and shit back on now and feel good that you have done something productive with ya life


*Under no circumstances am I reliable for any mishap that you or your bike may have caused during the process or after you have used these modifying techniques.Stop being a cat in other words.

THROTTLE FILTER
Aim: Prevents throttle stick when the grip is pushed against the throttle body and causes the throttle tube not to flick back. Also prevents gritt and dirt build up inside throttle body
1)Remove grip covering throttle tube , clean up throttle tube
2)Grab a sheet of course foam or foam where the poars are quite fine and place your grip flange (flaired out end of the grip -the big bit!) and trace around the flange with a permanent marker , Then cut out with scissors the foam disc you marked up
3) find the centre of the foam disc and put a dot on it with the permo. Grab your grip and measure the internal diameter of the inside of the grip where it slides on to the bar
4) Mark on your foam disc a line the length of the internal diameter but reduce the diameter by about 2-3mm, try and centre the line on the dot that marked the centre of the foam disc radius. Continue drawing a few more lines on the disc that are the length of the original line drawn on it so eventually you get a set of lines that can be joined to make a circle
5) fold this disc in half and cut the inner circle out
6) now slide that disc onto the throttle tube and leave a gap of about 2mm from the throttle body , then slide the grip back on - Your grip will now be prevented from sliding up the throttle tube and rubbing on the throttle body!

RAISE YOUR TANK 20MM AND REDUCE VIABRATION
Aim: Its a pain in the ass having to remove the tank to pull the carby slide cap off when you want to play with your needle clip position and your knee's viabrate like a lonley housewife due to your engine not being rubber mounted. Kill 2 birds with one stone by using rubber stoppers availible from bunnings that prevent these problems from occuring (cost: $3)
1) Remove plastics, seat and tank. Grab your cream/black/ white (what ever colour float your boat) rubber stoppers used to prevent your lounge /tables rubbing on your floor and drill a hole around 5mm wide in the centre of the bushing (or what ever size the threads are on your tank mount bolts!)
2) Check to see if your tank bolts can thread through the bushing hole. Then your in the money
3) Get 2 bolts that are 50% longer than your old bolts to accomidate the rise
4) grab some araldite or superglue and glue a washer onto the bottom of the bushing
5) place the bushing underneath your tank , bolts the tank back on and its all done
-You will notice fuel will run to your carb quicker due to the increase in elevation of the tank and you can run a more direct fuel line route and can pull your carb cap off!

Stay tuned for the mikuni VM on-the-fly fuel mixture screw!!




IF ANYONE ELSE WOULD LIKE TO ADD THEIR FREE MODS PLEASE DO SO!!!
__________________
CRF50F ( Limmy)
KTM250EXC
WR250F

WWW.MXINK.COM.AU

PRO TAPERS XR50 SE HIGH RISE BARS FOR SALE ( Black) - Like new = $50 (including bar pad). PM me for details!!!

Last edited by unit_mx : 19-04-2008 at 08:54 AM. Reason: Thought i was over my word limit
Reply With Quote
Sponsored Links | Remove This Box
  #2 (permalink)  
Old 24-06-2007, 03:54 AM
Divy's Avatar
Senior Member
 

Join Date: Oct 2006
Posts: 1,295
Send a message via MSN to Divy
mod 1 (THE LEVER PERCH BUSHING) is a good mod to do ive done it in the past and with a few falls i only snapped the clutch lever once

mod 2 (FACTORY LOOK CUT AWAY IGNITION COVER) ive done it to my pitty its very easy to do if you have used a grinder before it looks good an like unitmx said it makes it easy to clean mud off from around the front sprocket an makes changing front sprockets very easy

mod 3 (LOCKWIRE YOUR GRIPS) i do it to all my bikes i reckonmend it

mod 4 (POLISH INTAKE MANIFOLD) i havnt done it to my pitty but i wanted to do it i just forgot lol so thanks unit for reminding me i might do it tomorrow or the day after

all 4 mods that unit mx posted are really good mods to do and are also very cheap to do

top post unit mx
Reply With Quote
  #3 (permalink)  
Old 24-06-2007, 04:15 AM
50s BRotherhood #1's Avatar
Moderator
 

Join Date: Nov 2006
Location: Newcastle
Posts: 2,090
Send a message via MSN to 50s BRotherhood #1
couldnt agree more yop thread... unit's (lou) cut away ignition cover turned out sweet...top tips
__________________
http://www.miniriders.com.au/forum/m...os-coming.htmlNEWCASTLE RIDE:


-DOOK 124cc ducar powered chinga bike built by me.
-2006 ktm exc 250, The Oil Burners Arn't Dead Yet
-1976 honda z50j
-early 70s honda z50 (minitrail)
-49cc 2 stroke pocket rocket sausage sanga
*building a mini, check it out:
http://www.miniriders.com.au/forum/m...ook-salad.html
Reply With Quote
  #4 (permalink)  
Old 24-06-2007, 04:27 AM
jacko's Avatar
Senior Member
 

Join Date: Jan 2007
Location: sunbury victoria
Posts: 233
yep gud work
__________________
06 motovert 110 sold


pushies
stolen bmx
Reply With Quote
  #5 (permalink)  
Old 24-06-2007, 05:22 AM
kwikaz's Avatar
Senior Member
 

Join Date: Jan 2007
Location: melbourne
Posts: 227
inlet port

yer top post unit one question though, how do i port the hole in the head with out gettn metal dust in there??
Reply With Quote
  #6 (permalink)  
Old 24-06-2007, 05:40 AM
Member
 

Join Date: Feb 2007
Posts: 75
Well done unit mx. Some top tips for anybody that wants some inexpensive and easy to perform "mods"
Reply With Quote
  #7 (permalink)  
Old 24-06-2007, 06:14 AM
cass38a's Avatar
Senior Member
 

Join Date: Dec 2006
Location: central west NSW
Posts: 1,342
Quote:
Originally Posted by kwikaz View Post
yer top post unit one question though, how do i port the hole in the head with out gettn metal dust in there??

Shove a rag in there and vacume it out before you try to pull it out.
__________________
MSO X7r
150cc twister buggy
Reply With Quote
  #8 (permalink)  
Old 25-06-2007, 02:59 AM
kwikaz's Avatar
Senior Member
 

Join Date: Jan 2007
Location: melbourne
Posts: 227
ragga jagg

yer i was thinking of that but i was hoping there was a more sure fire way of doing it , or should i say more technical way.. but i appriciate the reply all the same. yer a valuble asset to this forum cassa
Reply With Quote
  #9 (permalink)  
Old 25-06-2007, 05:26 AM
unit_mx's Avatar
Senior Member
 

Join Date: Oct 2006
Location: Newcastle & Telly point
Posts: 1,321
Send a message via MSN to unit_mx
cheers boys ,got any more that ya know of? .lol tim i spent all that time and effort cutin my igntion cover to smash it the first ride .sweet
__________________
CRF50F ( Limmy)
KTM250EXC
WR250F

WWW.MXINK.COM.AU

PRO TAPERS XR50 SE HIGH RISE BARS FOR SALE ( Black) - Like new = $50 (including bar pad). PM me for details!!!
Reply With Quote
  #10 (permalink)  
Old 25-06-2007, 05:50 AM
kwikaz's Avatar
Senior Member
 

Join Date: Jan 2007
Location: melbourne
Posts: 227
invention

HEY guess what guys ive got a reall good1 for you all im very happy i actually got somthn to give back for once, i ask how to keep metal dust out of my inlet port on my head while i was match porting to the size i wanted, cassa suggested to put a rag in and then vacume out excess dust when finished as this a pritty good i dea i wanted somthn a little more fullproof, so i sat there and come up with this wait for it......you know the coke caps from 1.25 litre coke bottles well if you look under the cap there is this blue disk wich seals the lid when tight so what i did was pick the blue disk out and measured it and guess what its the freaking perfect size fits snug az a bug, so i put three just for good mesure and know when im finished honing out the inlet port i will vacume the excess dust out and i will be able to see if there is anymetal in there wich there wont be cause theres nothing too catch on as the edges are at a 45% angle on the walls ITS BEAUTIFULL TRY IT OUT YOU WILL SEE WHAT I MEAN.. hope this is of some use to all you fellow members ... tell me what you think of my monkey?? there is a before and after but the before is when it looked nice and after it has a new lifan 140cc and im spraying the tank..
Attached Images
File Type: jpg 100_0608.jpg (66.5 KB, 191 views)
File Type: jpg 100_0581.jpg (41.8 KB, 238 views)
File Type: jpg 100_0603.jpg (41.6 KB, 119 views)

Last edited by foolsp33d : 06-07-2007 at 12:26 PM. Reason: WAY to many !?????
Reply With Quote
Reply



Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
me and my bros doin doughnuts and other tricks on 125 cc and 140cc samtheman Videos 11 12-08-2007 07:54 PM
trade. i know i have posted this b4 but.. mad man Mini Chat 21 09-10-2006 03:31 AM
trade jwe97015 Mini Classifieds 3 19-09-2006 04:07 AM
want to trade unifilter for another air filter r1_rider Mini Chat 9 11-05-2006 04:51 AM

» Site Navigation
» MiniRiders Links
Subscribe to MiniRiders
Join Our Facebook
» Our Sponsors

Advertise Here

» Current Poll
How Often Are You On MiniRiders...???
every night/day for 1 hour or less - 6.45%
4 Votes
every night/day for 1 hour or more - 40.32%
25 Votes
most days for 10 mins or less - 8.06%
5 Votes
id say around every second day/night - 19.35%
12 Votes
once a week or less - 8.06%
5 Votes
TOO MUCH,more then 2 hour's a day - 14.52%
9 Votes
once a month - 3.23%
2 Votes
VERY VERY VERY RARELY - 0%
0 Votes
Total Votes: 62
You may not vote on this poll.
» Online Users: 70
0 members and 70 guests
No Members online
Most users ever online was 263, 27-06-2007 at 03:04 AM.

Powered by vBadvanced CMPS v2.2.0

All times are GMT +11. The time now is 06:17 AM.
Powered by vBulletin Version 3.6.0
Copyright ©2000 - 2008, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.1.0