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Bakerraptor700 Blaster class
Joined: 01 Apr 2008 Posts: 109 Location: Newcastle  |
Posted: Thu Jun 18, 2009 7:30 pm Post subject: best engine for a 70 trike?? |
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| starting a new 70 soon but this time i want one that i not to scared to get a scratch on. i seen the 70s on the flat track just wondering what engine they running?? and where i can get 1. |
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stu Fifty Arrrrrrrrr Big Bore, Stroked & Bling +

Joined: 22 Sep 2007 Posts: 393 Location: Newcastle NSW  |
Posted: Thu Jun 18, 2009 7:47 pm Post subject: |
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125,140, thumpster engine direct bolt in no cutting. Im pretty sure the 160 are the same too. _________________ 86 atc 250r.
86 trx 250r (project).
78 atc 70.
laydown 200 atc 70.
71 parrot green 90 ballooooony.
81 atc 185s. |
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Bakerraptor700 Blaster class
Joined: 01 Apr 2008 Posts: 109 Location: Newcastle  |
Posted: Thu Jun 18, 2009 8:03 pm Post subject: |
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| sweet seeing this flat track racing got my thinking |
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Aussieduner Moderator

Joined: 05 Sep 2006 Posts: 1458 Location: New South Wales  |
Posted: Thu Jun 18, 2009 8:05 pm Post subject: Re: best engine for a 70 trike?? |
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| Bakerraptor700 wrote: | | starting a new 70 soon but this time i want one that i not to scared to get a scratch on. i seen the 70s on the flat track just wondering what engine they running?? and where i can get 1. |
I have a 125cc Thumpster in my K1 70, bolts straight in and its had a pull start conversion by Greenhuman, just with that size donk its crazy powerful.This flat track 70 stuff is going to be awesome, the more the merrier ! _________________ 1989 TRX 250R |
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HondaGrant 4fiddy Racer

Joined: 18 Feb 2007 Posts: 266 Location: Newcastle NSW  |
Posted: Thu Jun 18, 2009 8:39 pm Post subject: |
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The Chinese motors are probably the way to go these days if you want some cheap horse power just bolt'em in and off you go.
I've got one with a worked 90 motor in it,it's good when it's going but when its not its a pain in the arse.......... _________________ If a Quad is a Quad Bike,
Is a Trike a Trike Bike ????? .... |
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Bakerraptor700 Blaster class
Joined: 01 Apr 2008 Posts: 109 Location: Newcastle  |
Posted: Fri Jun 19, 2009 7:54 am Post subject: |
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| i got a 125 thumpster now an if flys thats the way i def goin with next 1. i still ant started my 92 big bore kit engine yet hopefully its not 2 disapointing cause it cost me enough. |
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ATC250RG 90cc 2 stroke / 110 4 stroke
Joined: 29 Dec 2008 Posts: 75 Location: Newcastle  |
Posted: Fri Jun 19, 2009 6:31 pm Post subject: |
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I have a GPX160cc motor in one of my Honda TRX70's, it fit in with minimal mods and goes very well.
I am going to fit one to a ATC70 as well, bring on the flat track!
[/i] |
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millsi Blaster class

Joined: 26 Jan 2008 Posts: 124
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Posted: Fri Jun 19, 2009 8:22 pm Post subject: |
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i think a 125 electric start would be ideal, nice and reliable and cheap, not too mention a fair bit of power. a cam and compression change for a bit more power if needed _________________ 70s FTW!
1974 Atc 70 custom
1982 Atc 70 for the mrs
1985 Atc 70 |
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greenhuman Roostin Away

Joined: 12 Feb 2006 Posts: 980
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Posted: Fri Jun 19, 2009 10:36 pm Post subject: |
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| I have a brand new 125cc electric start engine for $350 if anyone is interested. |
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millsi Blaster class

Joined: 26 Jan 2008 Posts: 124
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Posted: Sat Jun 20, 2009 2:04 am Post subject: |
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that sounds like a good deal, what brand and does it come with wiring? _________________ 70s FTW!
1974 Atc 70 custom
1982 Atc 70 for the mrs
1985 Atc 70 |
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greenhuman Roostin Away

Joined: 12 Feb 2006 Posts: 980
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Posted: Sat Jun 20, 2009 11:17 am Post subject: |
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| Its a Jianshe and its got a harness. |
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ashnery Moderator

Joined: 03 Jul 2006 Posts: 927 Location: www.dn.eng.com.au  |
Posted: Sat Jun 20, 2009 3:32 pm Post subject: |
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If you guys pull out your finger and get somthing going (be r-dh-ad or Kurri Kurri?,Are you going to run classes or will it be the 70 open classic ,no holes bared ? _________________ OH "profanity removed" I SAID "profanity removed".......OH "profanity removed" I SAID "profanity removed" |
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stu Fifty Arrrrrrrrr Big Bore, Stroked & Bling +

Joined: 22 Sep 2007 Posts: 393 Location: Newcastle NSW  |
Posted: Sat Jun 20, 2009 3:40 pm Post subject: |
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I recn have classes a stock 70 against a project may be a bit of a disadvantage, I recn it would be more exciting racing too if it was a more level playing field. Keep all the modded ones together, and vice versa.
Either way though I dont mind I recn its gonna be awesome fun. _________________ 86 atc 250r.
86 trx 250r (project).
78 atc 70.
laydown 200 atc 70.
71 parrot green 90 ballooooony.
81 atc 185s. |
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Quad The Day Starts With OZATV !
Joined: 22 Oct 2006 Posts: 2773 Location: UP FRONT  |
Posted: Sat Jun 20, 2009 3:46 pm Post subject: |
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| 4 trax 90 fitz right in. $400 complete. eletics etc. |
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Mart 300r Roostin Away

Joined: 02 Jun 2008 Posts: 944
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Posted: Sat Jun 20, 2009 4:01 pm Post subject: |
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Yeh would have to have classes.As there are some big bore 70's around.
Back to original question best engine would have to be over 200cc's lol.
Theres no better feelin than tryin to keep the front end down on a big powered 70.
[/img] |
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stu Fifty Arrrrrrrrr Big Bore, Stroked & Bling +

Joined: 22 Sep 2007 Posts: 393 Location: Newcastle NSW  |
Posted: Sat Jun 20, 2009 4:27 pm Post subject: |
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There is a few around now, got me thinking who has a big cc 70,
Johnny Mc Project
Andy W project
me (Stu) poject
you(mart) INBREAD Project
Anymore?????
Then theres the thumpster/alternate motor 90cc ^ conversions,
Aussie D 125 pullstarter
Bakerraptor 92 kit
Honda grant 90 conversion
Steven W HONDA 138 BIGBORE+ 3 Others
Anymore?????
Then theres stock 70?????
Millsi allsorts of 70's  _________________ 86 atc 250r.
86 trx 250r (project).
78 atc 70.
laydown 200 atc 70.
71 parrot green 90 ballooooony.
81 atc 185s.
Last edited by stu Fifty Arrrrrrrrr on Sun Jun 21, 2009 12:03 pm; edited 2 times in total |
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ForeverThreeWheels The Day Starts With OZATV !

Joined: 18 Nov 2008 Posts: 1742 Location: Maitland  |
Posted: Sat Jun 20, 2009 6:46 pm Post subject: |
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This is shaping up nicely guys. Even though i dont have a "pit trike" (cant really call them a 70 anymore) i'll still be there to watch and film. This stuff will be gold in the DVD!  _________________
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stu Fifty Arrrrrrrrr Big Bore, Stroked & Bling +

Joined: 22 Sep 2007 Posts: 393 Location: Newcastle NSW  |
Posted: Sun Jun 21, 2009 12:06 am Post subject: |
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mate no one gets left out you can have a go on marts if you want
na seriousley im sure you'll score a run this is gunna be fun.  _________________ 86 atc 250r.
86 trx 250r (project).
78 atc 70.
laydown 200 atc 70.
71 parrot green 90 ballooooony.
81 atc 185s. |
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millsi Blaster class

Joined: 26 Jan 2008 Posts: 124
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Posted: Sun Jun 21, 2009 12:29 am Post subject: |
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| greenhuman wrote: | | Its a Jianshe and its got a harness. |
centrifugal or manual clutch and what gear configuration?
sorry for all the ?s _________________ 70s FTW!
1974 Atc 70 custom
1982 Atc 70 for the mrs
1985 Atc 70 |
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millsi Blaster class

Joined: 26 Jan 2008 Posts: 124
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Posted: Sun Jun 21, 2009 12:30 am Post subject: |
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ive got a baby 88 kit but its not a racer. my stocko 85 70 goes ok though. _________________ 70s FTW!
1974 Atc 70 custom
1982 Atc 70 for the mrs
1985 Atc 70 |
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ForeverThreeWheels The Day Starts With OZATV !

Joined: 18 Nov 2008 Posts: 1742 Location: Maitland  |
Posted: Sun Jun 21, 2009 12:41 am Post subject: |
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| stu j wrote: | mate no one gets left out you can have a go
na seriousley im sure you'll score a run this is gunna be fun.  |
Thanx Stu... I cant wait! It matches my helmet too! Its meant to be!!!
 _________________
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Vortech 50cc nipper
Joined: 24 Jun 2009 Posts: 12 Location: South Australia  |
Posted: Wed Jun 24, 2009 7:39 pm Post subject: |
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I'm picking up a pair of ATC 70's tomorrow, looking to mount a bigger/faster engine in one of them.
Has anyone considered something like a CR80 engine, obviously would take a bit of messing around to fit, any one considered?
or What is the biggest lifan ( or other such side mount pit bike) engine that you can fit? |
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stu Fifty Arrrrrrrrr Big Bore, Stroked & Bling +

Joined: 22 Sep 2007 Posts: 393 Location: Newcastle NSW  |
Posted: Thu Jun 25, 2009 4:59 pm Post subject: |
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Hi mate, think the biggest thumpster, pitpro etc is the 160cc and apparently there pretty quick in the bike. As far as anything else you've got greenhumans (JMC) laydown motors as pictured above in my project
thats out to around 230cc, or theres Mart300r whos layed down an aircooled 250r trike motor and shoved it in, im pretty sure you could put anything in one (within reason) if you had the time, dollars and the equipment. I think Greenhuman has a fully suspended project for sale, that is if you want to keep your 70s standard and have a fast 70, anyway goodluck with it whatever you do, post some pics up of your new rides.
Cheers Stu. _________________ 86 atc 250r.
86 trx 250r (project).
78 atc 70.
laydown 200 atc 70.
71 parrot green 90 ballooooony.
81 atc 185s. |
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Quad The Day Starts With OZATV !
Joined: 22 Oct 2006 Posts: 2773 Location: UP FRONT  |
Posted: Thu Jun 25, 2009 5:52 pm Post subject: |
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| Yes the yfz 450 motor ,70 trike will be good . |
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greenhuman Roostin Away

Joined: 12 Feb 2006 Posts: 980
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Posted: Thu Jun 25, 2009 5:53 pm Post subject: |
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| millsi wrote: | | greenhuman wrote: | | Its a Jianshe and its got a harness. |
centrifugal or manual clutch and what gear configuration?
sorry for all the ?s |
Manual clutch. I think its 1 down 3 up. Its brand new so I haven't used the gears. |
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