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Mart 300r
Roostin Away
Joined: 02 Jun 2008
Posts: 944
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 Posted: Tue Aug 25, 2009 4:33 pm Post subject: My project trx 500r (NEW VIDEO) |
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Gday fellas just thought id show ya's some photos of my new project.Its a 96 cr500 powered trx 250r.All ive gotta do now is a few odds and ends like clutch cables carby etc all the boring stuff lol.All the hard work is done.
I know these 500's are known to vibrate in quad frames due to harmonic(speeling)vibrations not being able to escape,Ive rubber mounted the front and top engine mounts to try an stop some of it but if its to bad out with the engine and ill get the balance factor on the crank fixed up.hope you like cheers.
Last edited by Mart 300r on Fri Aug 20, 2010 6:26 am; edited 4 times in total |
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Mart 300r
Roostin Away
Joined: 02 Jun 2008
Posts: 944
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| Posted: Tue Aug 25, 2009 4:37 pm Post subject: |
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heres another pic of kick start setup because of the bike kickin backwards i used two gear box cogs out of a 250r engine and fab up some mounts and now it kicks forward works quite well.I know that it looks like its welded to the kick start shaft dont worry its not lol it has a spline behind it that fits the shaft. 
Last edited by Mart 300r on Tue Aug 25, 2009 5:40 pm; edited 1 time in total |
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4stroker
Joined: 15 Jan 2007
Posts: 1420
Location: North Queensland
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| Posted: Tue Aug 25, 2009 5:18 pm Post subject: |
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that is awesome mate good work! i like what you did with the kick start
i reckon its gonna vibrate a fair bit ( i used to have an '01 cr500) but i think as long as it doesnt crack welds and rattle bolts loose, it will be liveable...
also have you done any research on laeger trx500r chassis? they actually made them a fair while ago and apparently with the rubber mounting system they used, it wasnt too bad.
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Mart 300r
Roostin Away
Joined: 02 Jun 2008
Posts: 944
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| Posted: Tue Aug 25, 2009 5:35 pm Post subject: |
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Yeh i seen a few of the leagers frames to expensive to get and i also enjoy doin stuff myself.As for the vibrations alot of people dont know because they are in a bike the vibrations can travel and escape through the front forks and are not as noticible,Where as quad they just have no where to go and just continue around the frame.And because these motors were designed for a bike honda only brought the balance factor on the crank to 60% where as ive got the dimensions to bring it up to about 95%.So if they do get to bad ill just split the cases and get tha crank balanced.Also another positve is if i balance it,its gunna unlock alot of hidden hp just buy doin that (not that its gunna need it,well  lol)
cheers mate |
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cowchaser
The Day Starts With OZATV !
Joined: 14 Feb 2006
Posts: 1618
Location: Warrnambool
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| Posted: Tue Aug 25, 2009 6:53 pm Post subject: |
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Oohhhh I sooo wanted to do that for such along time!!!!!!! Trust me dude get the crank balanced! I have a pretty worked 500 and getting the crank balanced makes a huge difference
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Smitty |
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JONO
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Joined: 27 Sep 2007
Posts: 530
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| Posted: Tue Aug 25, 2009 7:37 pm Post subject: |
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| If it's still vibrating up through the bars a lot try some bar weights on the ends. Looks good though, bet it'll be awesome to ride |
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Big Jb TRX450
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Joined: 10 Jun 2006
Posts: 939
Location: victoria
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| Posted: Tue Aug 25, 2009 8:04 pm Post subject: |
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oooooooooo mate i look 4ward 2 seeing that thing finished...u gotta love the hybrids!!
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04 TRX 450r
with a bit of this & a bit of that |
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doorslammer
Roostin Away
Joined: 24 Jul 2007
Posts: 902
Location: Northern WA
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| Posted: Tue Aug 25, 2009 8:34 pm Post subject: |
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awsome
a big bore 2 stroke in a quad. should be good fun 
did the KX500's have the same vibration problem? or are they basically the same motor?
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01 Banshee
Never take life seriously. Nobody gets out alive anyway |
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4stroker
Joined: 15 Jan 2007
Posts: 1420
Location: North Queensland
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| Posted: Wed Aug 26, 2009 7:28 am Post subject: |
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ive never ridden a kx5 but im pretty sure they'd be the same, due to no counter balancer...
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hustleratv.com.au
The Day Starts With OZATV !
Joined: 26 Jan 2007
Posts: 1022
Location: Adelaide
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| Posted: Wed Aug 26, 2009 9:39 am Post subject: hi |
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nice job, just one question is that a trike air box system?
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bullet
The Day Starts With OZATV !
Joined: 09 Sep 2006
Posts: 1518
Location: Middleton SA
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| Posted: Wed Aug 26, 2009 10:52 am Post subject: |
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I reckon you'll only love it more if you get the engine reballanced as best you can first.
Because it's in a quad, maybe look for a slightly heavier flywheel too.
although, like you said power should not be a problem 
wicked project, remember to stitch your glove finger tips to the thumbs too 
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Bullet #Y12. MrsB #Y18. |
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Ozpilot
Blaster class
Joined: 02 May 2007
Posts: 101
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| Posted: Wed Aug 26, 2009 10:58 am Post subject: |
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There's nothing quite like the power of a 500! (quote from a very wise TC that has always reminded me of the smile my 500 quad always put on my face).
I have never heard of any 500 (single 2 stroke) that doesn't vibrate - that's what balance shafts are all about - there is a reason they put balance shafts on 250 2 strokes. Rubber mounts seem to get rid of enough vibration. I used rubber mounts at the front and top of the engine and in the handle bar clamp mounts. Things like the radiators should also be rubber mounted well - its likely there will still be a fair amount of vibration runiing around the place at different revs.
You'll have great fun once you get it finished!!! |
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Mart 300r
Roostin Away
Joined: 02 Jun 2008
Posts: 944
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| Posted: Wed Aug 26, 2009 4:07 pm Post subject: Re: hi |
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| hustleratvracing wrote: | | nice job, just one question is that a trike air box system? |
Yeh mate trike airbox that was what was on it when i bought the 250. |
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Mart 300r
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Joined: 02 Jun 2008
Posts: 944
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| Posted: Wed Aug 26, 2009 4:11 pm Post subject: |
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| 4stroker wrote: | | ive never ridden a kx5 but im pretty sure they'd be the same, due to no counter balancer... |
Yeh some people ive talked to about the kx's said they are just the same vibration wise.They are ment to have a smoother power delivery due to having a power valve.Although i just couldnt bring my self around not putting a honda engine in a honda frame dunno why lol. |
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ashnery
Moderator
Joined: 03 Jul 2006
Posts: 927
Location: www.dn.eng.com.au
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| Posted: Fri Aug 28, 2009 5:49 pm Post subject: |
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Nice work marty good to see I love the big bangers.
It wont be too bad on the vibes ,But they are getting more than 50hp out of the 450s now.you can get 80 hp out of a cr 500 and will hold togther quit nicely.
You wont be sorry you have done it ,nice craftmenship.
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HondaGrant
4fiddy Racer
Joined: 18 Feb 2007
Posts: 266
Location: Newcastle NSW
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| Posted: Fri Aug 28, 2009 7:54 pm Post subject: |
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Top stuff Mart,
I like that front engine mount set-up you've designed and welded (nice welds),that should soak up a bit of the vibration.
If that doesn't work you could always whack another 500cc out the front of the engine and that could act as a counter balance and you could double your horse power at the same time .
Could be a little bit of stuffin around involved but  .
Keep up the good work..........
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If a Quad is a Quad Bike,
Is a Trike a Trike Bike ????? .... |
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Mart 300r
Roostin Away
Joined: 02 Jun 2008
Posts: 944
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| Posted: Sun Aug 30, 2009 8:57 am Post subject: |
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Thanks fellas i had the big girl running.Vibrates a fair bit so i just pulled the motor and am currently splitting the cases to get the crank balanced.I thought i should probably just get it all done properly now instead of building it and then having to do it later on.While of got it apart im getting all the specs of the barrel port heights,sizes,legths etc and put them into the pipe program my mate has then fabricate a pipe for it.
Yeh grant i was thinkin of layin one of theses motors down for a 70.Nah just jokin lol, Heres a few pics of it in the quad nearly finished (until i pulled it back apart cant help myself lol)buy the way that gay seat cover is goin.Has any one got a cover for a trx 250r they want to get rid of ? and im in need of a set of skat trac haulers and front dune runner tyres.cheers
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JONO
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Joined: 27 Sep 2007
Posts: 530
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| Posted: Sun Aug 30, 2009 6:15 pm Post subject: |
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| Loving the finished product, must be a blast to ride |
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doorslammer
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Joined: 24 Jul 2007
Posts: 902
Location: Northern WA
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| Posted: Sun Aug 30, 2009 9:26 pm Post subject: |
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nicely done, looks like it was supposed to be in there. Gunna do a bit of porting to it while its getting balanced?
you know you want to...
are you using a 250r pipe on it?
got any video if it running?
how was the quadzilla for vibrations do you know?
well that's my list of question done 
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01 Banshee
Never take life seriously. Nobody gets out alive anyway |
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SIKSHEE
Blaster class
Joined: 18 Feb 2009
Posts: 102
Location: PERTH, WA
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| Posted: Mon Aug 31, 2009 10:27 am Post subject: |
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hey dude let us know what size haulers your after ive got a few sets
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Mart 300r
Roostin Away
Joined: 02 Jun 2008
Posts: 944
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| Posted: Mon Aug 31, 2009 5:25 pm Post subject: |
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| doorslammer wrote: | nicely done, looks like it was supposed to be in there. Gunna do a bit of porting to it while its getting balanced?
you know you want to...
are you using a 250r pipe on it?
got any video if it running?
how was the quadzilla for vibrations do you know?
well that's my list of question done |
Im gunna just clean up the ports and bit of a polish nothing to serious people go overboard with ports in my opinion and end up running worse unless they are speced (spelling)up properly with right pipe, carb, squish on the head, fuels so many different things lol.
As for the pipe nah was going to use the 250 pipe but id have to change the stinger id as its to narrow and long would get real hot an prob rob it of alot of power.it would work but im going to fab my own up after i get all the specs out of the barrel and put them into a pipe building program on my uncles computer.He use's it on his 2 stroke road bike that he races hes managed to get 28 hp out of an 80cc cr80 replica engine crazy ay.
No video of it yet mate but will when i get it back.
Not sure on the quadzillas all i know is when bought my raptor 700 i remember two fellas commin to the stocko drags an they were near mint and they left me for dead lol not to put the raptors down cause i loved mine an due to wantin to buy a house ive only just sold it but they are a good quad |
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4stroker
Joined: 15 Jan 2007
Posts: 1420
Location: North Queensland
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| Posted: Mon Aug 31, 2009 8:03 pm Post subject: |
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quadzilla motors are c/b so they shouldnt be too bad..
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PeteW
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Location: Doreen, Vic
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| Posted: Tue Sep 01, 2009 2:36 pm Post subject: |
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quadzilla motors are the only 500 single 2T offroad motors that were counter balanced and so not as bad with the vibration...
I want to put 500 engine in mine but smitty wont let me steal the one out of his CR......just ended up with a 310 kit instead. Although there are 500 kits available to go onto the 250 motors....
Good call on the custom pipe Mart, there is just no way a 250 pipe will deal with what a 500 puts out and its not like there isn't enough room to make whatever sized exp chamber you need.
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cowchaser
The Day Starts With OZATV !
Joined: 14 Feb 2006
Posts: 1618
Location: Warrnambool
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| Posted: Tue Sep 01, 2009 3:38 pm Post subject: |
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Keep your greedy little mits off my CR500 Pete!!!
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Smitty |
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Mart 300r
Roostin Away
Joined: 02 Jun 2008
Posts: 944
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| Posted: Fri Nov 06, 2009 4:26 pm Post subject: |
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Well i finally took the big girl for a ride and the report is not good.the vibrations these big things put out is unbeliveable.i got the crank balance factor moved so the vibrations would be right at the later stages of the rpm (bad move)thinking ill be short shifftin it everywhere.They are so bad you can barely hold the handle bars at full throttle lol dont get me wrong these things absolutely fly lol.I reccomend if anyone wants to try this be very aware and when you get the crank balanced get the vibrations moved to the lower part of the rpms.
Now for the good news and enough of bagging out my ride lol. Im currently half way through fabricating/machining a couter balancer setup for it, I cant let to many details go because if all goes well these will be getting sold in kit forms to the good ol usa.
Last edited by Mart 300r on Fri Jan 15, 2010 7:58 pm; edited 1 time in total |
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