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mini 250r more progress

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Mart 300r
Roostin Away


Joined: 02 Jun 2008
Posts: 944

PostPosted: Tue Jul 29, 2008 11:25 pm Post subject: mini 250r more progress Reply with quote Back to top

few more photos of the laydown r engine in thumpster frame nearly done just tacked tha pipe together tonight ill tig it up tmoz all the swing arm is done just gotta fab some foot pegs paint and put odds and ends back on gettin there should go like a demon well i know it did in the 70 frame anyway lol




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gottahaveaus90
50cc nipper


Joined: 06 Dec 2006
Posts: 36
Location: Adelaide, South Australia

PostPosted: Wed Jul 30, 2008 8:16 pm Post subject: Reply with quote Back to top

THAT"S WILD! ! ! !
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1973 KO ATC70
 
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ashnery
Moderator


Joined: 03 Jul 2006
Posts: 927
Location: www.dn.eng.com.au

PostPosted: Wed Jul 30, 2008 8:20 pm Post subject: Reply with quote Back to top

last time i checked a 250 cylinder did not lean forward that far ??
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PC



Joined: 20 Dec 2006
Posts: 565
Location: Newcastle

PostPosted: Wed Jul 30, 2008 9:43 pm Post subject: Reply with quote Back to top

Mart my friend, you have way too much time on your hands buddy! LOL!
 
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Quad
The Day Starts With OZATV !


Joined: 22 Oct 2006
Posts: 2773
Location: UP FRONT

PostPosted: Wed Jul 30, 2008 9:51 pm Post subject: Reply with quote Back to top

why ash my lawnmower duz and it works ,last time i did the lawn it worked 7 years ago.
 
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Mart 300r
Roostin Away


Joined: 02 Jun 2008
Posts: 944

PostPosted: Thu Jul 31, 2008 12:26 am Post subject: Reply with quote Back to top

yeh ash they dont usually lie that far forward but with enough patience and head scration anythings possible lol ive heard youve had ur fair share of laying 200x's motors down.It really is an 84 250r engine the write up of it is at 3ww world.com

pc: not enough time really all i wanted to do tonight is sit in tha shed and build more of it (ive got the bug back lol)but promised tha boys id go watch tha fight tonight at tha rsl so im only just gettin home now i stayed back at work this arvo and finished welding tha pipe like i said all i have to do now is fab some foot pegs and put carb elecs and stuff back on this motor absolutely hammers ay i had it in tha 70 frame but yeh was just way to much it handled just like a 70 until about half throttle and it would just start gettin hectic lol now hopefully with a 250r front end good swing arm and abit of suspension i might be able to get a few more than 5 laps without arm pump trying to hold on to it lol theres actually a video of it on you tube its only just runing it in the back yard but it does prove it runs and was a in a 70 frame for those who still dont belive lol
 
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HondaGrant
4fiddy Racer


Joined: 18 Feb 2007
Posts: 266
Location: Newcastle NSW

PostPosted: Thu Jul 31, 2008 7:40 pm Post subject: Reply with quote Back to top

Thats Gold Smile Love Ya Work....... :wink.......
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BC250R



Joined: 23 Jan 2007
Posts: 375
Location: Stockton Dunes if i'm lucky

PostPosted: Fri Aug 01, 2008 1:40 pm Post subject: Reply with quote Back to top

Looks like that GMC chainsaw got a bit of a workout with all the choppin and changin goin on here!
Good work again Mart. In this frame it almost looks like you could cut up the motor again and stand it back up! Rolls eyes
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Technical info thread
http://www.ozatv.com/forum/viewtopic.php?t=4425
 
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stu Fifty Arrrrrrrrr
Big Bore, Stroked & Bling +


Joined: 22 Sep 2007
Posts: 393
Location: Newcastle NSW

PostPosted: Fri Aug 01, 2008 5:42 pm Post subject: Reply with quote Back to top

Cool trike Dibbs but my eye wondered on the third pic, recn that red n white quads better, lets see some closeups of that. he he.
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86 atc 250r.
86 trx 250r (project).
78 atc 70.
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71 parrot green 90 ballooooony.
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PC



Joined: 20 Dec 2006
Posts: 565
Location: Newcastle

PostPosted: Sun Aug 03, 2008 2:54 pm Post subject: Reply with quote Back to top

stu j wrote:
Cool trike Dibbs but my eye wondered on the third pic, recn that red n white quads better, lets see some closeups of that. he he.

Well F@#k me!
It's good to see you two blokes talking again. You Guys were best buds!

How's the wrist Mart? I heard you broke it yesterday.
 
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Mart 300r
Roostin Away


Joined: 02 Jun 2008
Posts: 944

PostPosted: Sun Aug 03, 2008 8:03 pm Post subject: Reply with quote Back to top

PC wrote:
stu j wrote:
Cool trike Dibbs but my eye wondered on the third pic, recn that red n white quads better, lets see some closeups of that. he he.

Well F@#k me!
It's good to see you two blokes talking again. You Guys were best buds!

How's the wrist Mart? I heard you broke it yesterday.


Yeh good to c mate ay.

Bloody hell howed ya find out about that lol news really does get around.i came up short on a jump over jewels and went front first straight into the landin ramp bent tha hangers right down to tha plastics well didnt bend them they slid in the clamps so yeh hit pretty hard.broke tha wrist gotta have an operation on it this week to move the bone back in place(moved forward 4mm lol)and get pins an plate put in there ohwell these things happen so wont be untill spring im back into it
 
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PC



Joined: 20 Dec 2006
Posts: 565
Location: Newcastle

PostPosted: Sun Aug 03, 2008 9:06 pm Post subject: Reply with quote Back to top

I saw one of your mates at the Brewery last night and he told me! Ouch!

If you were in the same state as he was last night you would of felt no pain .
 
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4stroker



Joined: 15 Jan 2007
Posts: 1420
Location: North Queensland

PostPosted: Wed Aug 13, 2008 10:23 am Post subject: Reply with quote Back to top

hey man can you post the link to the write up on 3ww.com?

thanks, mark
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Mart 300r
Roostin Away


Joined: 02 Jun 2008
Posts: 944

PostPosted: Sat Aug 16, 2008 8:31 am Post subject: Reply with quote Back to top

4stroker wrote:
hey man can you post the link to the write up on 3ww.com?

thanks, mark



http://www.3wheelerworldforums.com/showthread.php?t=59190


There ya go mate.
 
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4stroker



Joined: 15 Jan 2007
Posts: 1420
Location: North Queensland

PostPosted: Wed Aug 20, 2008 11:08 am Post subject: Reply with quote Back to top

haha just finished reading it, you sure copped alot of flak about your toes!

that is an insane project man, good work.

maybe next you could try the same thing with an old air cooled cr500 motor?!
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Mart 300r
Roostin Away


Joined: 02 Jun 2008
Posts: 944

PostPosted: Fri Aug 22, 2008 7:35 pm Post subject: Reply with quote Back to top

lol thanks mate.yeh i have one massive big toe all my mates get into me about lol.yeh ive got another laydown engine in the works at moment.and a few leads on some yz 490 engines but yeh see wat happens im keen on doin a real big 2stroker soon so should be fun
 
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4stroker



Joined: 15 Jan 2007
Posts: 1420
Location: North Queensland

PostPosted: Mon Aug 25, 2008 6:34 am Post subject: Reply with quote Back to top

cool.

be careful with the yz490 motors they notoriously hard to jet and get set up right.

they say that they have inherent design flaws in the porting specs and the combustion chamber design. to stop it from detonating you have to jet it so rich it runs like a pig, if you lean it out to get it running strong itll detonate and over heat and seize up and all kinds of wondourous things!

you look like a man of action though so you could probably get in and fix those issues with that motor, eg with some careful porting and a machined head.

the yz465 motors are said to be alot better. apparenlty back in the day blokes used to swap their 490 top ends for the older 465 top end and be much happier. i think they are harder to find though.

mark
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