DT125R ARCHIVE

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Post Info TOPIC: 200cc ,zeeltronic, 3xp, v-force, dep, tm34ss, yz induction hose mod


Guru

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RE: THE holy grail, 3XP00 cylinder prodject
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You doing all the calcs yourself or usin a computer ?..

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Guru

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well my dad knows how to work out comp ratio without computers and some else knows about advancing/delay ignition timing



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Guru

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BTDC and all that ? Lol nice

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Guru

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I love all that ,degrees of rotation per spark timing,port timing ,I live for this kinda thing,have you worked out the squish size with Perspex and all that or just near on with the volume etc????.....you should get away with elongating the stator bolt holes so you can advance the timing etc keep up th great work dude

-- Edited by GADGET on Friday 20th of July 2012 06:03:35 PM

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DTR Senior Member

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Awesome project you got there mate!! Cant wait to see the results ;)

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Yamaha DT 125 RE -06



Guru

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yes bottom dead center, angle of the crank at the top and bottom of ports etc



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Guru

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might pippet to measure the volume of the combustion chamber,

will  be work out when crank is in cases



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Guru

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Cool man loving this ,keeeeep it coming fella

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Guru

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they are done. will take pic on thursday and start the transfers



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Guru

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yay, got so much done by hand, would have got furher but one of the crank bearings was the wrong one, had the crank in ( one one bearing) and barrel LOOKS good

 

26072012487.jpg26072012490.jpg26072012494.jpg26072012495.jpg

26072012488.jpg26072012491.jpg



-- Edited by the only way is YAMAHA DTR on Thursday 26th of July 2012 10:32:21 PM

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Guru

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looking good fella,good work! biggrin ball ache doin them by hand though..... soon be up and running!



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money killed everything....



Guru

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thanks mate, the hardest part was the bit where the barrel legs sit, took ages



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Guru

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RE: MY 200cc conversion, getting there, lots of porn pics
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bit of bearing confusion, the blaster crank came with 1 koyo bearing the same as the original dt one and another one with a smaller O/D, but the crank seals are identical to the dt,

i have contacted a bearing company and there database shows the wr200 and dt125r bearings are 17mm wide, but the one that came with the crank is 16mm like the original,

so i gave them the part number and they said the 17mm will be correct for both bikes, has anyone else had this happen?

not sure if the extra 1mm will even be a problem so im giving it a try, the koyo bearings only £6 ish



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DTR Trusted Engine Builder

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no there wrong am sure the bearings need to be 16mm wide or the cases wont meet and the crank will be solid

been here done that plenty times lol

there specials and ull need them, not the 17mm 1s, the 1st part number is same 6205 is it...then its got a number/letter after it wich denotes the 16mm wide spec



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DTR Trusted Engine Builder

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unless u have the cases  machined 1mm deeper ijn the bearing housing



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NEV


Guru

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This is what I have written down for the bearings
6305R1 (16mm) Bearing Koyo Special Yamaha DT125R r/h Main I.D 25mm O.D 62mm x W 16mm £23.98


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DTR Trusted Engine Builder

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yeah thats it 6305 R1 biggrin



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Guru

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i gave tht number to the bearing suppliers and told me its 17mm!! dicks lol



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Guru

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ooh that could have been nasty bleh nice near miss lol



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money killed everything....



DTR Senior Member

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I had the same confusion when getting my bearings... Definately 6305R1 and 16mm.. The standard 6305 is 17mm which is definately a no no!!!!

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Blue DT Project Thread - OLD

Black DT Project Thread - NEW!!!



Guru

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i asked that when i ordered it the bloody bull****ters



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Guru

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name and shame em bud. sounds like they dont know their stuff....



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money killed everything....



Guru

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any soon i wont be needing my dep exhaust, who wants dibs lol



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I would be intrested that nikon pipe i got was **** how much are you looking for

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RE: MY 200cc conversion, lots of porn pics and VIDEOS !!!
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01082012505.jpg

01082012503.jpg

01082012502.jpg



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Guru

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[video=https://s1083.photobucket.com/albums/j388/louisgar/?action=view¤t=01082012038.mp4]

https://s1083.photobucket.com/albums/j388/louisgar/?action=view&current=01082012038.mp4

https://s1083.photobucket.com/albums/j388/louisgar/?action=view&current=01082012037.mp4

[video=https://s1083.photobucket.com/albums/j388/louisgar/?action=view¤t=01082012037.mp4]



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NEV


Guru

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Coming together nicely that is TOWIYDTR, one thing though, have you also got to do anything with the counter balance weight?

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Guru

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thanks, and no it will be fine standard ,smile



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Guru

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Siiiiiick,well done dude ,can't wait to see it all back together ,bet it's been a labour of love tho

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Guru

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got to strip it again to clean it, and fit crank bearing, i put all the gearbox together and fitted all other bits and pieces



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