2 Stroke In FMX

Midwest_Transplant · 08-17-2007, 07:22 PM

So i was talking to one of my freinds from back home tonight and like always the cnvo turned to 2 vs 4 strokes. anyway he brought up the ? why in freestyle they use 2 strokes and yet in racing they use 4. i didnt really have an answer so i was wondering if anyone could help me out? any help would be great

wr250f95 · 08-17-2007, 07:44 PM

because 2 strokes are lighter and better for jumping. and 4s are heavier and have power all over.

Midwest_Transplant · 08-17-2007, 07:56 PM

wouldnt you want the power all over though?

wr250f95 · 08-17-2007, 08:47 PM

a 2 is still just as fast as a 4, but with out the weight, the power all over just makes it easier to rider fast.

tigmaster · 08-17-2007, 09:06 PM

the exact reason for 2 strokes is the rotational parts. all the rotating parts in a 4 stroke can easily through off landing. also the snap that 2 strokes provide is what they are looking for, but the excessive amount of tunning required to get that is important. watch when they are warming up, tunning their carbs.

JThompson · 08-18-2007, 01:51 AM

In freestyle you need the snappy power of the 2 stroke

wr250f95 · 08-18-2007, 09:56 AM

im sure the light weight has something to do with it.

Midwest_Transplant · 08-18-2007, 03:45 PM

thanks guys. so when you say snap of a 2 i assume your talking bout when the power band hits?

wr250f95 · 08-18-2007, 04:42 PM

ya, they dont really need the power all over, but what they do want is something thats light and has great throttle response.

tigmaster · 08-18-2007, 06:18 PM

k we really need to stop with this whole weight issue thing and i guess im gonna have to stop it. Weight Of A Gallon Of Gasoline
now according to that article a gallon of gas weighs right around 6lbs. well according to yamaha, the yz125 which i consider the lightest 2 stroke weighs 190lbs correct? by the way, yamaha managed to shave off an impressive 6lbs this past year. now an rmz250 weighs 203lbs. so lets do the math 203-190=13lbs now if most gas tanks are right around 2 gallons then 2*6=12. so effectively the weight that everyone claims is so much more is that of the difference of an empty tank and a full tank of gas. also yamaha has many advanced building techniques and other companies arent so lucky at their weights. suzuki rolls in at 192lbs and honda at 197lbs. so if your riding a honda with a full tank and your buddy has half a tank in his rmz250, your bikes weigh the same. crazy huh????? please please please, would everyone stop being like, "o those 4 strokes are soo much heavier". because i will just refer you to this article every time.

08-17-2007, 07:22 PM	#1 (permalink)
Midwest_Transplant C Rider Join Date: Feb 2007 Posts: 20 iTrader: (0)	2 Stroke In FMX So i was talking to one of my freinds from back home tonight and like always the cnvo turned to 2 vs 4 strokes. anyway he brought up the ? why in freestyle they use 2 strokes and yet in racing they use 4. i didnt really have an answer so i was wondering if anyone could help me out? any help would be great

08-17-2007, 07:44 PM	#2 (permalink)
wr250f95 Super Moderator Join Date: May 2007 Location: New Mexico Posts: 7,847 iTrader: (1)	because 2 strokes are lighter and better for jumping. and 4s are heavier and have power all over. __________________ "LIFE'S JOURNEY IS NOT TO ARRIVE AT THE GRAVE SAFELY IN A WELL PRESERVED BODY, BUT RATHER TO SKID IN SIDEWAYS, TOTALLY WORN OUT, SHOUTING'...HOLY S**T... WHAT A RIDE!" this, is why I ride.

08-17-2007, 08:47 PM	#4 (permalink)
wr250f95 Super Moderator Join Date: May 2007 Location: New Mexico Posts: 7,847 iTrader: (1)	a 2 is still just as fast as a 4, but with out the weight, the power all over just makes it easier to rider fast. __________________ "LIFE'S JOURNEY IS NOT TO ARRIVE AT THE GRAVE SAFELY IN A WELL PRESERVED BODY, BUT RATHER TO SKID IN SIDEWAYS, TOTALLY WORN OUT, SHOUTING'...HOLY S**T... WHAT A RIDE!" this, is why I ride.

08-17-2007, 09:06 PM	#5 (permalink)
tigmaster Administrator Join Date: Aug 2006 Location: Missouri, United States Posts: 7,530 iTrader: (1)	the exact reason for 2 strokes is the rotational parts. all the rotating parts in a 4 stroke can easily through off landing. also the snap that 2 strokes provide is what they are looking for, but the excessive amount of tunning required to get that is important. watch when they are warming up, tunning their carbs. __________________ --'03 CRF450r-- --FMF Pipe, Pro-Tech Revavle-- --Vortex Basket With Tusk Disks And HP Springs-- --Pro Taper Triple Clamps And Bars-- --Devol Full SP With Moose HGs-- --Renthal 13/50 With R1 Chain-- --Now It Is The End, Probably...-- --'06 CBR F4I-- --Bone Stock-- Check Our Latest How-To Here

08-18-2007, 01:51 AM	#6 (permalink)
JThompson Administrator Join Date: Aug 2006 Location: Bellingham WA Posts: 4,925 iTrader: (6)	In freestyle you need the snappy power of the 2 stroke __________________ Tired of ads? Become a member for an almost ad free site! Also we give away monthly prizes just for posting! Register today! Looking for places to ride! Want to review a riding area? Check them out! PRE-ORDER MOTOTIPS Stickers now. Help keep mototips running! Get your order in today! Buy NOW! Special Discounts for members only! Check out our new discount forum for retailers offering to help you save money! Mototips Discounts

08-17-2007, 07:56 PM	#3 (permalink)
Midwest_Transplant C Rider Join Date: Feb 2007 Posts: 20 iTrader: (0)	wouldnt you want the power all over though?

08-18-2007, 09:56 AM	#7 (permalink)
wr250f95 Super Moderator Join Date: May 2007 Location: New Mexico Posts: 7,847 iTrader: (1)	im sure the light weight has something to do with it. __________________ "LIFE'S JOURNEY IS NOT TO ARRIVE AT THE GRAVE SAFELY IN A WELL PRESERVED BODY, BUT RATHER TO SKID IN SIDEWAYS, TOTALLY WORN OUT, SHOUTING'...HOLY S**T... WHAT A RIDE!" this, is why I ride.

08-18-2007, 03:45 PM	#8 (permalink)
Midwest_Transplant C Rider Join Date: Feb 2007 Posts: 20 iTrader: (0)	thanks guys. so when you say snap of a 2 i assume your talking bout when the power band hits?

08-18-2007, 04:42 PM	#9 (permalink)
wr250f95 Super Moderator Join Date: May 2007 Location: New Mexico Posts: 7,847 iTrader: (1)	ya, they dont really need the power all over, but what they do want is something thats light and has great throttle response. __________________ "LIFE'S JOURNEY IS NOT TO ARRIVE AT THE GRAVE SAFELY IN A WELL PRESERVED BODY, BUT RATHER TO SKID IN SIDEWAYS, TOTALLY WORN OUT, SHOUTING'...HOLY S**T... WHAT A RIDE!" this, is why I ride.

08-18-2007, 06:18 PM	#10 (permalink)
tigmaster Administrator Join Date: Aug 2006 Location: Missouri, United States Posts: 7,530 iTrader: (1)	k we really need to stop with this whole weight issue thing and i guess im gonna have to stop it. Weight Of A Gallon Of Gasoline now according to that article a gallon of gas weighs right around 6lbs. well according to yamaha, the yz125 which i consider the lightest 2 stroke weighs 190lbs correct? by the way, yamaha managed to shave off an impressive 6lbs this past year. now an rmz250 weighs 203lbs. so lets do the math 203-190=13lbs now if most gas tanks are right around 2 gallons then 26=12. so effectively the weight that everyone claims is so much more is that of the difference of an empty tank and a full tank of gas. also yamaha has many advanced building techniques and other companies arent so lucky at their weights. suzuki rolls in at 192lbs and honda at 197lbs. so if your riding a honda with a full tank and your buddy has half a tank in his rmz250, your bikes weigh the same. crazy huh????? please please please, would everyone stop being like, "o those 4 strokes are soo much heavier". because i will just refer you to this article every time. __________________ --'03 CRF450r-- --FMF Pipe, Pro-Tech Revavle-- --Vortex Basket With Tusk Disks And HP Springs-- --Pro Taper Triple Clamps And Bars-- --Devol Full SP With Moose HGs-- --Renthal 13/50 With R1 Chain-- --Now It Is The End, Probably...-- --'06 CBR F4I-- --Bone Stock-- Check Our Latest How-To Here*

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