I've seen some people have 2 types of pipes single and twin. Im just wondering whats the differences/pros cons.
What pipe is better for Deep Powder/Mountains? Single or Twin?
- Thread starter Work2Ride
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twin pipes offer gains in power in the high rpm range while suffering lower rpm power, tuning is slightly harder with twins and each cylinder must be tuned individually, single pipes are in my opinion better especially on skidoos, they offer low end power and are much easier to tune for altitude and temp...for deep powder i would suggest a single pipe because of the constant change in the throttle you cant always be where the power is on twins
O
Ollie
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For daily riding a single is simpler and more forgiving. It "can" give you some improvements across the entire power band. Some sleds an after market pipe doesn't really do much.
Twins are more for full throttle applications like highmarking, racing and stuff like that. They are more finicky and can be a pain depending on the application and what sled you put it on. Some sleds respond better to twins than singles (artic cat's M7 being one).
Twins are more for full throttle applications like highmarking, racing and stuff like that. They are more finicky and can be a pain depending on the application and what sled you put it on. Some sleds respond better to twins than singles (artic cat's M7 being one).
single is better for deep powder.
single has about half the surface area of twins, so it heats underhood air a lot less.
a single is less picky on jetting, which means when the engine DOES start sucking hot air, engine runs closer to optimal.
when the exhaust outlet gets plugged with snow, the single will run better then teh twins.
single has about half the surface area of twins, so it heats underhood air a lot less.
a single is less picky on jetting, which means when the engine DOES start sucking hot air, engine runs closer to optimal.
when the exhaust outlet gets plugged with snow, the single will run better then teh twins.
Yup!
Singles do work better, just for grunt and range alone..
I do however miss my crankshop twins on my ol' ZX... they grumbled saweet!!
Singles do work better, just for grunt and range alone..
I do however miss my crankshop twins on my ol' ZX... they grumbled saweet!!
Bikemaker and I had this out on the snow one day back in about 2002.
I had PSI twins and Shane Hart's porting.
He had an SLP single and Struthers porting.
I had a 151 Camo and he a Polaris 151.
We BOTH had 01 RMK 800s.
He told me flat out that he'd beat me out of the hole with his single pipe and I MIGHT catch him across Copper Lake at 8k feet elevation. I had no idea if he was right or wrong. We'd been reading threads on SW for a few years about how a single beats twins out of the hole. I figured I'd get beat out of the hole. I really did.
I said sweet...let's see.
We lined up...dead start. We used the ole 3 hop start. Go on 3. I hole-shotted him easily everytime with NO question. He thought I jumped the first time. We did it about 3 times. I got him every time. He was ASTOUNDED. He agreed the starts were fair after that.
I was about 45 pounds lighter than him. OK. In the name of science I had another idea.
We switched sleds. In the name of science, I gave it a full honest effort every time we both pinned the throttle again and again on each other's sleds. He beat me on my sled. Every time. He was 45 pounds heavier than me.
Flyweight was there to verify. No guff.
When someone says twins won't out-perform a single on the bottom end and mid range...I now snicker at them.
i've had numerous chances to test the twin vs single concept....the twins(with equally good clutching and setup will most always beat the single in a drag race, check out the grass drag boys).....but you will work harder to find the right setup for twins, the single is going to better across a wider range of conditions, but when the twins are rockin', the single won't match them
X
XC700116
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Tune triple/triples anywhere well and you'll love tuning twins.
saying twins are for top end and singles are for bottom is not true. Each pipe is tuned with a specific shape in and powerband goal in mind. You can have a single tuned for top end too. Most singles require a little more rpm than the stock pipe as well, which tells you how they are getting power - more rpm! so, as backa$$wards as it sounds, most singles actually see their gains up top. Twins on the other hand can have the ability to add power at all rpms. Jaws for example usually don't require any rpm changes (generally speaking). Its just a straight up HP increase at the same rpm.
NOW - you asked which is better. OPINIONS. Twins are harder to tune and are more finicky to temp changes, which means finicky in the DEEP (usually). Singles are always more consistant, but don't offer much in the way power these days over the stock system, besides loosing weight and picking up maybe 10hp max.
SO - big power = twins
light weight, consistant, small increase = single
NOW - you asked which is better. OPINIONS. Twins are harder to tune and are more finicky to temp changes, which means finicky in the DEEP (usually). Singles are always more consistant, but don't offer much in the way power these days over the stock system, besides loosing weight and picking up maybe 10hp max.
SO - big power = twins
light weight, consistant, small increase = single
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