earthling
Lifetime Member
Acceleration matters, were you equal to 330, did you have to reel him in, etc.. I will say that .5 second is a lifetime at 660'.Question, how much is .5 seconds in sleds lengths to 660'? Say carrying speed is 105 on top...
If you just mean if two sleds are travelling at 105Mph and the time to cross some arbitrary point is .5 seconds in difference, the distance between them is about 7+ sled lengths, but that is not what is happening in 660'.
For fun I made this chart during the "Mach Z king of the lake" discussion and based on gear ratios, the SRX would walk the mach Z on top. Then calculated if each were at their theoretical max speed (based on gear ratio), what would the gap be over time.
MachZ | SRX | |||||
Time-Secs | Distance Ft | Distance Ft | Delta Ft | Sled Lengths | Bus Lengths | Oligarchs Yachts |
1 | 167.20 | 180.40 | 13.20 | 1.32 | 0.33 | |
3 | 501.60 | 541.20 | 39.60 | 3.96 | 0.99 | |
5 | 836.00 | 902.00 | 66.00 | 6.60 | 1.65 | |
7 | 1170.40 | 1262.80 | 92.40 | 9.24 | 2.31 | |
9 | 1504.80 | 1623.60 | 118.80 | 11.88 | 2.97 | |
10 | 1672.00 | 1804.00 | 132.00 | 13.20 | 3.30 | |
15 | 2508.00 | 2706.00 | 198.00 | 19.80 | 4.95 | |
20 | 3344.00 | 3608.00 | 264.00 | 26.40 | 6.60 | |
25 | 4180.00 | 4510.00 | 330.00 | 33.00 | 8.25 | 1.10 |
30 | 5016.00 | 5412.00 | 396.00 | 39.60 | 9.90 | 1.32 |
35 | 5852.00 | 6314.00 | 462.00 | 46.20 | 11.55 | 1.54 |
40 | 6688.00 | 7216.00 | 528.00 | 52.80 | 13.20 | 1.76 |
45 | 7524.00 | 8118.00 | 594.00 | 59.40 | 14.85 | 1.98 |
50 | 8360.00 | 9020.00 | 660.00 | 66.00 | 16.50 | 2.20 |
55 | 9196.00 | 9922.00 | 726.00 | 72.60 | 18.15 | 2.42 |
60 | 10032.00 | 10824.00 | 792.00 | 79.20 | 19.80 | 2.64 |
Trailleader
Expert
Do you think you can?So your telling me a 998 on elevated fuel can't beat a boost in 500'
Fast
TY 4 Stroke Guru
- Joined
- Sep 25, 2018
- Messages
- 982
- Age
- 57
- Location
- Ontario
- Country
- Canada
- Snowmobile
- 2019 srx,2006 apex gt,96 storm hot to go
Just saying if a winder is set up to run race fuel the boost would be in trouble, this isn't even a comparisonDo you think you can?
Trailleader
Expert
Ok…
Probably see next year now?!?
Weather is crap
Probably see next year now?!?
Weather is crap
Last edited:
REDLINE 1
Expert
Lots of down time for wrenching these days!Ok…
Probably see next year now?!?
Weather is crap
Doc Harley
TY 4 Stroke God
- Joined
- Oct 17, 2016
- Messages
- 3,593
- Age
- 56
- Location
- Here & there
- Country
- USA
- Snowmobile
- '17 Sidewinder LTX SE
Well ..if you were to come, are you bringing reeds with you?Ok…
Probably see next year now?!?
Weather is crap
I hear the q16 and high boost does wonders on them?
Do you have a guy who's gonna change them lakeside? Quite the mess, pulling the tank and $***.
Sure it's like the old days.....hahaha.
Lay back and enjoy the ride.....
Trailleader
Expert
YepLots of down time for wrenching these days!
Putting my 998 and 1100 together
Trailleader
Expert
I checked mine and they looked new. Haven’t been on the stutter though and other stuff!!!Well ..if you were to come, are you bringing reeds with you?
I hear the q16 and high boost does wonders on them?
Do you have a guy who's gonna change them lakeside? Quite the mess, pulling the tank and $***.
Sure it's like the old days.....hahaha.
Lay back and enjoy the ride.....
Actually it’s not terrible to change reeds
Maybe 1.5 hrs
Doc Harley
TY 4 Stroke God
- Joined
- Oct 17, 2016
- Messages
- 3,593
- Age
- 56
- Location
- Here & there
- Country
- USA
- Snowmobile
- '17 Sidewinder LTX SE
1.5hrs!?!?! For God sakes man, you must be a real pro. You know what they say,"Practice makes perfect!"I checked mine and they looked new. Haven’t been on the stutter though and other stuff!!!
Actually it’s not terrible to change reeds
Maybe 1.5 hrs
Simplespeed
TY 4 Stroke Junkie
- Joined
- Jan 8, 2022
- Messages
- 501
- Age
- 65
- Location
- 1191 Sauk Lane , Saginaw, Mi. 48638
- Country
- USA
- Snowmobile
- 2006 Apex , 2017 Sidewinder LTX -LE
Looking at the Polaris Boost it looks like they packed stuff pretty tight… compared to the Catalyst Iam thinking 858 with a turbo is going to be the king of 2 smokes …. Yup going to be more smack talk real soon ….
Trailleader
Expert
It could be but there is a lot of room under the hood on the Polaris alsoLooking at the Polaris Boost it looks like they packed stuff pretty tight… compared to the Catalyst Iam thinking 858 with a turbo is going to be the king of 2 smokes …. Yup going to be more smack talk real soon ….
I like cats so I’d get one but we have a couple years on these and they run well.
The Polaris motor is not what the cat of the past was. Who knows what the 858 will be though? 600 made same hp as 20 years ago so really kind of a turd
Looks like 2 smokes are what’s coming though which I know none of you want to hear.
I hope a 4 stroke turbo stays in the game
On a side note I’d take an 850 doo in my matrix
Last edited:
Simplespeed
TY 4 Stroke Junkie
- Joined
- Jan 8, 2022
- Messages
- 501
- Age
- 65
- Location
- 1191 Sauk Lane , Saginaw, Mi. 48638
- Country
- USA
- Snowmobile
- 2006 Apex , 2017 Sidewinder LTX -LE
Four strokes are my choice and are best for the environment… They also have the title of The best durability and or longevity… We get all this at the cost of more weight… Ski-Doo has done a good job cleaning up the 2 smoke about as good as can be done… I like the improvement Cat has made in developing the 858 and its looks like most new features all point to a Turbo in the near future… For sure aftermarket but don’t be surprised if the factory comes along sooner than later… It will be a lightweight rocket with exceptional handling and then there will be three 850 turbos all trying to be the best…. Its going to be interesting thats for sure….
Doc Harley
TY 4 Stroke God
- Joined
- Oct 17, 2016
- Messages
- 3,593
- Age
- 56
- Location
- Here & there
- Country
- USA
- Snowmobile
- '17 Sidewinder LTX SE
We're being herded back to a 2 stroke at a time the world is going green. SMH?!?!
Anyone care to explain, not that'll believe you. It would be fun to read..... haha
Anyone care to explain, not that'll believe you. It would be fun to read..... haha
DooZ
TY 4 Stroke Junkie
Well the company that pioneered the 4 stroke is deciding to pack it in. The other companies are all about the bottom line, and the bottom line is 2 smokers are considerably cheaper to make. So Doo will be the only major 4 stroke player going forward, will they continue to up their 4 stroke game, or sit back because they know they don't have any competition? The next couple of years should be interesting, because with the advancements in the SxS market, it should translate into the sled market(hopefully). My $.02We're being herded back to a 2 stroke at a time the world is going green. SMH?!?!
Anyone care to explain, not that'll believe you. It would be fun to read..... haha
earthling
Lifetime Member
Why is simple. 2-strokes engines allow manufacturers to deliver a product that has a level of performance sufficient to drive consumption (purchasing by the public) at far higher profit margins than they can manage with 4-stroke designs. IOW there is a ton of incentive to keep tweaking the 2-stroke. Also, from an engine design perspective, 2-strokes are far cheaper as an investment so its a cheaper cycle from design to production with 2-strokes.We're being herded back to a 2 stroke at a time the world is going green. SMH?!?!
Anyone care to explain, not that'll believe you. It would be fun to read..... haha
The reason we don't like 2-strokes is that current 2-stroke technology must burn oil in the combustion cycle. The reason we like 2-strokes is that they have twice the volumetric efficiency of 4-strokes, meaning that for a given cylinder displacement they can put out twice the power (at theoretical limits) or more realistically, they can create more power for the same displacement.
A (potential) future; Modern 2-stroke engines are going to move away from port based intake/exhaust flow and move to better intake/exhaust management like valves in 4-strokes but the valves themselves come in all kinds of interesting designs. This requires external pressurization (supercharger) but eliminates the need to burn oil. Basically creating 4-stroke like timing control while leveraging 2-stroke efficiency. In the meantime, 2-stroke engines are cheaper to make, and cheaper to repair so for as long as the manufacturers can get away with whatever they need to do to pass EPA regulations they can inch their way into a more efficient 2-stroke future
Similar threads
- Replies
- 255
- Views
- 37K
-
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.