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Messages - DJRacing

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Tech Talk / Re: this may be of use to some one
« on: August 02, 2007, 08:33:25 AM »
An engineer made the steering stem for me, its a press fit into the bottom triples and he made it out of a solid piece and drilled the holes from the top and bottom and then wielded a cap on the top and put the treads on. I gave him the old one to copy from and all the seals etc to get as accurate as he could with the measurements. I could ask him  how much it was because I cant remember now and if you liked the price you could always send your bottom triple to him and you will get a nice new one back. I also gave him the bearing for the bottom triple and he pressed that on for me as will. Alot of VMXers use him over here but when he see us walking into his workshop he always starts laughing because of the wierd looking things we bring in for him to make.

General Discussion / Re: mx 250
« on: August 02, 2007, 08:08:22 AM »
The specs I have for the MX250A  had 31BHP @ 7500rpm and 3.03kgm torque @ 7000rpm. A vm30sc carb, timing is  2.3mm BTDC, gearing 51/14 and a dry weight of 101kg.

Tech Talk / Re: this may be of use to some one
« on: August 01, 2007, 09:03:32 PM »
YZ250H, dont use bars leak. It has a bad habit of clogging up the water flow passages. On my YZ125J I had a new steering stem made. (a bit of work involved) but it wasnt to expensive. The middle half-seal separates the returning hot water from the cooler water coming from the radiator. The o-rings have to be viton o-rings as these are heat proof. So at the end I rebuilt the whole thing but it still leaks. The leak is very very minimal because I have only had to top the radiator up just a couple of times over 3yrs. But as I say it still leaks because after a race there is always a couple of drops on the front guard but certainly nothing to worry about. There are 4 of the viton o-rings, 2 full oil seals and 1 half oil seal.
But please dont use bars leaks.

Yamaha / Re: YZ125 rods/pistons!?
« on: July 31, 2007, 11:01:22 AM »
The YZ125H rod fits (4v2) into the YZ125G. The 5X4 rod does the J-K-L. And if my memory is right the 3R2 rod is good for the A-C-X-D-E-F. The YZ125N uses 55Y rod. The piston for the G has slimmer rings (3R3) but A-F can use the (2K6) piston and rings. The H-J-K use (5X4) piston and ring (single ring) the L's piston has only one indent around the gudgeon pin and the N's piston doesnt have any indents around the gudgeon pin. The reason for this is that the fuel/air mix can escape around the indents so they didnt put them in those pistons.

Competition / Re: Masters of Motocross NZ
« on: July 27, 2007, 11:14:50 AM »
This is what ya will be racing for if ya make the trip over

Competition / Re: Masters of Motocross NZ
« on: July 27, 2007, 09:19:10 AM »
It was bloody funny riding the track like that and no one fell off but believe me the roost hurt like hell so yeah maybe it was chilly, or the 'chully' could have got hit with roost and then it would be chubby ;D

Competition / Re: Masters of Motocross NZ
« on: July 27, 2007, 01:04:58 AM »
hey dj you blokes sure leave the door open for a few sheep shagger gags ,looks a bit chully too.

Yeah I can understand that YZHilly. But it always makes me laugh though when our sheep are exported over there ;) ;D and is that 'chully' chilly or chubby??  ;D

Competition / Re: Masters of Motocross NZ
« on: July 26, 2007, 09:30:07 PM »
Nathan I know you will understand this, but nothing 'cramps TM's style'  ;D. We were talking the other day and he said he was looking forward to you and your better half coming over. Dont worry about the nudie bars, coz are you sure he didnt mean nudie biking???

We raced in the North V's South like this and won hands down.....woops... I mean hands on the bars..woops... I mean we just rode hard.... Oh bugger.... will ya know what I mean anyway ;D

Competition / Masters of Motocross NZ
« on: July 26, 2007, 08:51:44 PM »
We are still all go for the 26 August. Nathan are ya gonna take TM's offer up? Hmmmm, could be along way to get the cup back if ya win ;D

Introductions / DJRacing
« on: July 26, 2007, 08:46:25 PM »
Where to start.... Once upon a time a young lad picked up a magazine called "Motocross Action" and promised himself that when he was old enough and had the money he would do motocross. I was about 10yrs old then and the closest I could get to mx was on my 20" wheeled push bike setting up jumps and the like. But after a move to the country and, an after school job milking cows I got to learn how to ride a motorbike (XL100). I worked every school holidays and in the weekends milking those things and bought the bike I learnt on. I guess I pulled about 294,624 tits to get that first bike. I cant remember how many times I got shat on but I did have a farm to ride the bike on, life was bliss.
  The XL100 was sold and a TM125 was the next weapon, but I never got to MX it, and it to was moved for a XL175, but after a Ford F100 decided it liked my side of the road more than its own any thought of motocrossing was now in a crumpled heap.
 Cars became the vehicle of choice for the next 22yrs but that buzz of dirtbikes was always their. All I wanted was a dirtbike to play around on at the beach and in the forest so I was on the lookout for just such a stead. Asking a few friends if they could keep an eye out for a bike I stumbled onto this thing called VMX and, as if you guys dont already know 'the rest is history'.
  I bought a YZ125E and went racing. It just took till I was 40yrs old but who is counting..... just like the amount of bikes I have.
  So thats my story and even though in the early days I owned other brands back then, all I own now are Yamaha's. Call me one eyed, I dont care, but a YZ just does it for me.

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