New DRZ rider

[Flash]

Steve just ordered his wheels and a four piston kit for the DRZ!!!
He is getting the suspension done next and an exhaust. Followed buy a cams big bore and some porting (buy some one I know well :) )

[Wobbly]

C'mon then .. where are the wheels coming from? Billet or OEM hubs? What colour combo? What sizes?

Which 4 piston kit is he going for? What did it cost? Is it one with an offset mount (like for a generic brembo p4) or is it a dedicated setup like a braking, made specifically for particular models?

What sort of disc? Std 320, wave, etc?

[Sibbo]

and the name of the shop addendant he spoke to, the colour of the package it came in,etc.

I think Neil has covers all the info you could want.

[Flash]

Ha Ha

Talon hubs, excell rims, braking brake. I'm guessing but I think that it will be a wave disc.(I know that he likes them)

[Wobbly]

Mmm, braking ... tasty ... do you know how much $$$?

I got a brembo master cylinder sitting in the shed waiting for a 4 spot caliper to mate with :D

Wheel/hub colours??

[Muzzard]

Well so why aint Steve telling us about it?.. Is he still in the closet, motard wise? :lol:

[Flash]

The hubs are gold and the rims are silver. I tied to get him to get nickel plated, I think they are the coolest. that's what I would get. :up:

Nuh Muzz Steve doesn't have internet access yet.he live's at home and his Mum wont let him have it!!!!!! :roll:
She thinks the internet is only for porn. I said that we use it for other stuff sometimes aswell. :lol:

[Wobbly]

There's more than porn out here? :shock:

[Flash]

What!

[Muzzard]

Tell him to move up here... Where the men are men and the wildlife is nervous! :lol: Real motard here mate, Not that poofy commuting stuff! :smash:

[Sibbo]

does he cook, clean, wash, iron and let me use his bike all the time?

[Flash]

Nuh mate he doesn't cook or clean but he may pay for someone to do it.


I was wrong with the rims he got morad rims and they are nickle plated. He is also dropping the bike off at krooz tune for the suspension to be done next week!!

[Wobbly]

Geezus ... i'd better get my act into gear to catch up then :D

First up - training wheels!! :lol:

[Flash]

Suspention is followed by some engine work!! Like they say if you want more inches stroke it! He also has a prototype ultra light weight muffler coming and exhaust. :shock: Maybe some work on your's wouldn't go astray hey Neil! :cry:
I know I'm going to be in trouble, I need to find some cash so I can put the whistle on :D

[Wobbly]

Stroke it? Really? :-k

There is a yoshi 450 long stroke kit ... which can be coupled with a big bore for 503cc ... but apparently they don't hold together too well at 60hp :shock:

[Sibbo]

60hp from a 503cc, this is almost the hp from a 300cc 2 stroke and it takes 503cc??? just make it into a 2 stroke and get 80hp!!!!

[Muzzard]

Ah, Must have been a different YZ250 that wasnt gettin' away on the straights at Wodonga :lol: Funny it was being hunted by a ... 250 4 STROKE! :butthead:

[Flash]

It's funy how every form of motor sport on the planet that can use either 2 or 4 stroke power always tends to increase the 4 stroke capacity to almost double so it's competitive. Fact not fiction!! :finga: :supz:

[Muzzard]

That may be the general rule Ash, look at speedway, how many 2 strokes?
Dirt track at pro level?
Drag racing motorcycles?
Hillclimbers?... And last time I looked both Sibbos YZ and my WRF both had 249cc cast to the barrels. :lol:
How hard can you ride it is more the question I would think...
There are a few bemused/confused/crying like babies sportbike riders around this area with a healthy respect for smallbore 4 strokes!
They also think 2 stroke owners should be arrested for wildlife cruelty. :shock:

[Wobbly]

Ignoring the fact of course that the effective amount of fuel/air mix being processed by a 500cc 4-stroke cycle for cycle is the same as a 250cc 2-stroke, thus warranting the difference in capacity. They both process 500cc of fuel/air mix in 4 cycles, its just that the 4 stroke takes all 4 cycles whereas the 2 stroke processes half as much every 2 cycles. So the capacities are effectively the same y'see :D

[Flash]

That's incorrect Neil a 990cc moto gp bike was using a lot more fuel than the 500's. That was the response when they first brought the 4 strokes in and they were interveiwing the riders and the engineers.

At the end of the day were talking power to capacity - to make power you use fuel!! But if you back off and cruise the smaller 2 stroke will use less fuel than a bigger four stroke.

[Wobbly]

That's incorrect Neil a 990cc moto gp bike was using a lot more fuel than the 500's.

Well, you sparked my interest there ash, so I did a quick bit of digging and turned up the original FIM announcement on the new tech regs when the motogp bikes were introduced:

The Grand Prix Manufacturers Association (GPMA) have proposed, yesterday 8th April 2000, that the FIM makes a proposition to the Grand Prix Comission with the following exceptions to the technical regulations for the 500cc class of the FIM Road Racing World Championship Grand Prix, that will be effective from 1st January 2002, and the FIM has accepted to do so.

The said exceptions are the following:

* For two-stroke engines only, the fuel tank capacity will be limited to 32 liters maximum.
* Four-stroke prototype motorcycles will be experimentally allowed in the FIM Road Racing World Championship Grand Prix, with the following characteristics:
1. Engine displacement: maximum 990cc, regardless of the number of cylinders (minimum 3 cylinders).
2. Minimum weight:
o three-cylinders: 135 kg.
o three-cylinders (oval pistons): 145 kg.
o four- and five-cylinders: 145 kg.
o four or more cylinders (oval pistons): 155 kg.
o six or more cylinders: 155 kg.
3. Fuel tank capacity:
o maximum 24 litres for years 2002 and 2003.
o maximum 22 litres from year 2004.
4. Noise limit:
o pre-race limit: 115 dB/A.
o post-race limit: 120 dB/A.
5. All the rest as per current regulations.

So, in fact the reverse of what you're saying - the 4 strokes were limited to 8 litres of fuel less than the 2 strokes in order to limit the power they were making, most likely due to safety concerns. The less weight and easier on the tyres point comes from the minimum weight stipulated by the FIM for the 500 gp bikes was 130kg instead of 4 & 5 cylinder 4 strokes at 145kg.

:D

[Flash]

Mmmm I spoke to the old man and he remembers the same thing I said about the fuel. Don't think he still has it on video for proof.

So let me get the gist of this.... If I understand what your saying then a diesel would be the best of everything! Once again The most reliable engines on the planet (cargo boats and oil tankers) are 2 stroke diesels (apart from turbines)not to mention most efficiant to lug the weight.
Mmmm so do you think there is something in that!
I'm now going to try to find a book on combustion engineering to find out the answers once and for all. I believe the a four stroke is less efficient if for no other reason than it has a lot more weight to turn. (Valves spring chains) Not to mention that the bottom end on a four stroke is usually required to be heavier. It's a bit like the super charger versus a Turbo!

[Wobbly]

Although of course it has the advantages of a less impure fuel/air charge to combust as well as a higher effective compression ratio after port closure ;)

I don't disagree that 2-strokes can be tuned for great reliability of course, but its always a compromise because of the fixed port timing. Now come up with a 2 stroke design with variable port timing (similar to what power valves do on exhaust ports, but also extended to the main transfers as well) as well as variable expansion chamber dynamic (similar to the crude exhaust valves used in 4-strokes) to change the pulse resonance, couple that with direct injection and then you'd be talking :D

[Wobbly]

Of course you know that I do like 2-strokes, its just that I enjoy a good argument even more :lol:

[Muzzard]

Come on Ash, You and I both know a good two stroke is only useful in the bush to choke greenies on blockades, and to stun wildlife for easier studying/eating... :lol:
Next time I come down I will bring you a new 'power band' I got from the green grocer the other day. It was on some potatoes but I knew you would want it, its a wide one... :roll:

[Flash]

Who wants a wide power band, it's to easy to ride

Marketing being what it is Neil I doubt the manufacturers would put the money into developing the 2 stroke enough to have the variable ports, but I believe (according to my old engine builder) it has been done in the early 80's. It was going to be a Turbo F1 engine but it was outlawed before it was allowed to be used in a car..
As you know I like 4t's aswell and I don't mind a good argument either. :D

[Flash]

OK back on the topic at hand.
The DRZ has now had the wheels and brakes fitted and the correct gearing (thanks Neil) and the new suspension. Steve took it for it's first test ride on Saturday night.
The text message I got at about 9pm was - Shit to a blanket.. F@#king Hell!
Then on Sunday... Slicks are no problem in the wet!!! (albeit I don't know whether he is comparing it to the knobbies or not!! :shrug:)
The thing is fairly stiff now too, still soft enough to go off road with no worries :up:
The pro tapers that he just put on are now to low with the back not sagging the same, so I'm trying to convince him that he needs a motocross bike to put under them!! :D
I think he'll have to look at a set of very high riser bars to get it right, You'd hate it Muzz you obviously like a high bar (after seeing your bike)and the DRZ is so low compared to the wr/yz in the bar height department..
I believe it's the exhaust/bore/stroke/cams/porting next

I will post photo's soon!!

[Muzzard]

Look at a tall T2 Tag bar or equivalent, add the bar adapters/risers and roll the bars forward into the negative, over the forward point of the stauntion centre line...
This will help with forward weighting of the bike with 'natural ergonomics' allowing for the changes to suspension and wheels package...
Tends to make you more 'technical' in your riding subconsciously, as you are forced to keep to arms and elbows up...

[Flash]

Yeah, he tends to have that farmer Joe elbows down kind of riding round the paddock looking for sheep style. :shock: