longtime coming
Member
- Mar 18, 2006
- 265
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Some people parrot what they read in the magazines or online, and others know things from actual experience.
Some know things from research or experiments that comes from being around bikes or in the industry for many years, not just a couple.
oldguy said:His cornering was much faster on the 125 but he had a major disadvantage when running down straights or on hilly tracks.
BINGO!mkelly04 said:I think the 2-strokes just sound faster, and of course when you dump the clutch and blow up a berm it looks fast........ But that just means you are losing traction :)
steve.emma said:i agree, some people on here are just repeating any old rubbish that they have read or heard..... doesn't mean that they are wrong though. Especially when the thread is about a subject that has only been a fairly recent occurence.
As for experience in the industry, you're right cant be beat. However some things can be understood without years of first hand knowledge and if that helps form an opinion then we are all the better for it.
For example ive never met Micheal Jackson but i wouldnt let him babysit my kids.
I've never ridden a KX250, but I'd never let Michael Jackson babysit my kids either.steve.emma said:For example ive never met Micheal Jackson but i wouldnt let him babysit my kids.
2-Strokes 4-ever said:The single best thing we can do to keep the 2stroke alive is.........buy them.
Actually, (based on what I read :think: ) RC made the switch to the RMZ when he saw his times through the whoops were much better than on the RM.ebeck said:Charmichael won in 05 on a 2 stroke didn't he?
The reason for thumprs... EPA and tree huggers. Plus dealers and manufacturers like all the new parts and service revenue.
2strokerfun said:Based on what I've seen from that red-headed kid on the Pro Circuit Kawasaki 250f do last year, I might be convinced a modern high-zoot 4 stroke could even be competitive with the same displacement.
steve.emma said:why is the displacement for the 2stroke taken as the swept volume? i.e. 125cc or 250cc etc..
i mean a 2stroke engine can only compress what air fuel mixture is trapped after the exhaust port is closed, therefore not as many cc's as the swept volume.
HhhhMmmmmmhhhhhhmmmmmmm :rotfl: 2 strokes are not dead yet. The technology is out there, take a look at kart engines, rotary valve induction has many possabliltyswileyE said:Because a four stroke fires every other stroke vs. every stroke it has to do something else twice to be "equal" .
1. It has to be twice as many cc's. (rules have allowed this)
or
2. It has to have twice the compression (because of it's wasted stroke cooling effect 4 stroke can run higher compression on the same fuel)
or
3. it has to rpm twice as high (most race 4 strokes do rpm higher than comparable two stroke)
The modern 4 strokes are able to utilize all 3 "equalizers" to their advantage, though class rules were set purely on displacement. There- in lies the advantage. Another small advantage came when unleaded race fuel was mandated , something that hurt the 2 strokes worse than the 4's.
steve.emma said:why is the displacement for the 2stroke taken as the swept volume? i mean a 2stroke engine can only compress what air fuel mixture is trapped after the exhaust port is closed, therefore not as many cc's as the swept volume.
SpDyKen said:So, my questions are relating to costs. For a privateer;
- How many of these $10K 250F engines would one need to contest an entire season? What would one need to budget to properly maintain these racing engines for a season?
- Just how much $ would one need to build & maintain a 450F to the same standards?
- What would a reasonable budget be to buy and maintain a race-prepped 125/144cc two stroke engine, for an entire season of Nationals? How much $ for a 250T?
I think that dad had more money then brains. His kid needs track time and practice more then the engine mods. I see kids running $3000 suspensions and who knows how much $$$ engine mods to run mid pack. The dads love to brag how much they spent modding the bike but when asked how often the kid rides they get a bit shy.DieselTech said:I personally know a local kid that got motor work done by PC, and his dad spent $4k - so it wasn't a Pro level motor. This kid races in the Novice class locally, and placed 22nd for the season in his class. He had some top-10 finishes, his best was 3rd. I also know a few of the other kids in his class, and they don't have a $4k PC motor in their bike, yet they are doing as well as, or better than he is. So, is he doing as well as he is because he got the motor work done, or was it a waste of money (as far as increasing his lap times and therefore allowing him to do better)? My guess - waste of money. I really think it's 90% rider. Watch any Pro level MX/SX event - the bikes have got to be darn near equal in terms of power, handling, etc., yet the top riders are lapping the others! I'd be willing to bet that RC, RV, CR, JS, etc. could still win races on a stock bike.
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