The cheater MX85 argument. I might be changing my mind.

[mr bucketracer]

Yeah but not everyone is you. Or can send it to you. Some people just want a modern reliable 2 stroke engine they can easily get parts for, to bolt in which has reasonable power in comparison to a stock fxr.

How i have experienced it thus far, is that a stock FXR150 with a carb and a pipe/pipe mod. Is as fast as a stock RM85, however the RM85 is a ton harder to ride.
The 85 still has better peak power. But the power under the curve is greater on the FXR. It ends up very similar.

everything i did with a stock fxr playing with the pipe went slower .. i just think for the sake of 2-3 people taking up this . its breaking a rule that has been in place for 35years .. for little work you can make whats out there go good with little cost ! you stuffed up more barrels years ago when you had no idea what you where doing , now days people share all info to get it right or pritty good the first time

[kel]

Yeah 4 strokes are better. No one on this site could tune an 85 to make the same power.

Your final post was several pages back

Let the CRF's in as well I say.

[richban]

Your final post was several pages back

Let the CRF's in as well I say.

Can't help myself. Fun to whined up the cry babies.

[mr bucketracer]

Your final post was several pages back

Let the CRF's in as well I say.

that was me (-; can't bite my tongue

[Skunk]

Can't help myself. Fun to whined up the cry babies.

Fuck you - leave me alone...


If it ain't smokin' - it's broken.

[steamroller]

Well i'm certainly hoping to get around on it but I would be more than happy to send it down to BoB for someone to have a skid on. I want to try come down myself but I'll have to wait and see. (New job means I might be overseas for periods of time)

I'm planning on buying an ignitech soon for the supercharger project, I'm also curious to see how the 85 would react to some ignition and possibly better carb and intake setup. Unfortunatly I am the wrong person at trying to tune this thing to the limit (nor is it my interest with the 85) but it would be nice to see how well these things react to some good engine work.

Look at the bike that has one the last gp thats got work done to it and it wins hands down . I would say your bike would be along the same line as it.

[Bert]

Look at the bike that has won the last gp; thats got work done to it and it wins hands down . I would say your bike would be along the same line as it.

Not far off given they do use the bottom ends for MX engines (Europe).

But its not just the engine that won the GP. you have to give credit where credit is due... the rider & the package did a lot; the engine just had to stay together....

I'm tied of this now...
I'm going to get my TZR100 sorted and give it to Tyler....

[Sketchy_Racer]

Look at the bike that has one the last gp thats got work done to it and it wins hands down . I would say your bike would be along the same line as it.

Yeah I would say that has less to do with the motor and more to do with the pilot and also the chassis. To win you need the package and clearly they have it with the 80 in the RS chassis with a good rider.

Put him on one of the hot FXRs in a good chassis and he'd probably wax everyone on that as well.

[F5 Dave]

Look at the bike that has one the last gp thats got work done to it and it wins hands down . I would say your bike would be along the same line as it.

I've ridden Sketchys cheater bike & lets be clear. It ain't quick. I know what 18hp feels like. I know what 20hp feels like, I know what 22 HP feels like, 23, 24, 25, 26 & 27, all in pretty peaky packages. Sketchy's bike would have trouble drag racing my old 17-18hp H100. In fact I'd beat him. Or maybe when we put it on the dynojet we can do an all gears comparrison with an old run & find out. It was like 80kg. We can't do a real test as the engine is in Sketchys garage & the rest left to rot somewhere.

The amusing thing is Nathanial riding his dads bike won the GP with circa 24hp. He said it was considerably more peaky than his bike & he kinda preferred his. As if to prove a point he then used his bike to recently break the Auckland track record with not much more than 20hp but a better spread.

At least that is my understanding from talking to him & his dad.

I think we'd all prefer to hear that the bike(s?) is a monster 30hp weapon stuffed full of illegal race parts. but it isn't the case. We'll have to suck it up & hope he discovers gurls & slows down a notch or two.

[F5 Dave]

Yeah 4 strokes are better. No one on this site could tune an 85 to make the same power.

With the same spread, yeah I'd agree.

[F5 Dave]

who gives a .what they do i the US,i think they all race in the same class here,the 250s in the MX champs do.if you open the door for any MX motors look out.Dave do you have a stock pile of 85 motors, your looking to make a killing on.

Yes & they put 990s in the 500GP class & obsoleted the 500s pretty quickly.



Dave's Midnight Motors & MX85 emporium, step right up. If we don't have stock of what you want we can usually source it overnight

[Yow Ling]

Yeah 4 strokes are better. No one on this site could tune an 85 to make the same power.

Jan Thiel is a member on this site, he managed ok with the Aprilia RSA and RSW as well as a bunch of world titles on 50cc Jamathi's

[husaberg]

Jan Thiel is a member on this site, he managed ok with the Aprilia RSA and RSW as well as a bunch of world titles on 50cc Jamathi's

he won a few with Bultaco as well i think..............

[CM2005]

Let me know when this gets to MNZ so i can join a club and vote FOR it.

Some alzheimers patients repeatedly posting in this thread bandying about with the word "Competition".. Just cause it says it on the box, doesn't really mean much. If you're so sad about it, have Falicon build you a special commuter crank for your FXR and have a Ti rod and gudgeon pin made.

This is more retarded and has taken more deliberation than introducing Moto2 or CRT... Or dare i say it Post Classics

Any fule know that the "DERBI" engines, while legal, are super competitive, however i can't see a stock 85 MX bike being superfast. Do you guys understand the term "Under the curve"?? Compare NZV8 (not supercar/tourer the old ones) to Honda Cup or SS2000.. Big torque and cubes vs big rpm and peaky delivery, yet ballpark lap times

I'll repeat myself from earlier (seems to be the done thing on KB)
Standard engines
Standard Carb
Could use one of the Go Kart airboxes as a "restriction" - probably wont hinder it much
Pipe size as factory or Dia. as stated earlier
Standard Ignition

and see how it goes.

OR we could argue about it for another 5 years.

[Yow Ling]

So its ok to get a gear set cut at the local gear guy with whatever ratios you like, just costs a bit, but its not OK to have an engine built in a factory as a mxer with the same close ratios. Its ok to buy a close ratio gearbox from Akunar for your fxr because its a commuter engine, but not ok to buy a crf150 with similar gear ratios. Is the no competition parts rule just a bit past its best before date, its a bit like cannibis law its illegal but doesnt stop anyone

Has anyone bought the Akunar or similar gear sets? thats open enough to say so, it not illegal