yamaholic22
Active member
Honda has had prototype snowmobiles for several years now, they just have yet to put one into production. Snowtech has talked about them before.
yamaholic22 said:That is not necessarily true by any means that four strokes are the way of the future. That is YAMAHA's solution to all the new emissions regulations and it only made sense from a company at the forefront of performance four-stroke engine technology. However, bombardier/rotax/evinrude/can am has STRONG two-stroke technology and is using highly-developed electronics and sensors to make their two strokes meet emissions, and are doing it at much lighter weight and virtually no cost penalty over the four strokes. And this is still all without a form of e-tec on the sleds. NO LAW is EVER going to state that all vehicles of any sort must be four stroke or two stroke or rotary or diesel or any other engine type, they will simply have emission standards, possible fuel consumption minimums, CO2 emissions regulations, NOx emissions regulations, etc, and it will be the job of each individual manufacturer to decide what solution method will provide the best balance between profitability, dependablity and feasibility. That is how it is now, and with the more stringent emissions in the future that is still how it will be.
Octane said:It will never happen. Last year when the Cat Jag Z1R came out, Cat said that they tried every 4-stroke engine that Suzuki makes (including the Gixxer motor) and that none of them worked well in a snowmobile, so Cat designed their own 4-stroke and had Suzuki build it.
Other than Yamaha, the whole rest of the industry is going to try to sell us on twins because they are less expensive to manufacture.
jr_amsoil said:maybe the reason behond all the honda dealers ar dropping cat cause they have to make room for some honda sleds on the floor. had a dealer in town that just got rid of cat. i'll have to go and ask him if he knows much about them.
Honda doesnt have the same level of 4-stroke engine technology. Honda is using single overhead cam (what they call, "unicam"), 4 valve per cylinder engines whereas Yamaha is using dual overhead cam, 5 valve per cylinder engines. DOHC is a much more efficient, more reliable design because it uses fewer moving parts, so there is less rolling resistance (because there is less weight in the valvetrain that is moving) and you get more power. Also, with fewer moving parts in theory it is less likely that something will break.yammiman said:Honda is one of the only manufactures that has the same 4 stroke technology that Yamaha has and they both gained that knowledge from their motorcycle line
Octane said:Honda doesnt have the same level of 4-stroke engine technology. Honda is using single overhead cam (what they call, "unicam"), 4 valve per cylinder engines whereas Yamaha is using dual overhead cam, 5 valve per cylinder engines. DOHC is a much more efficient, more reliable design because it uses fewer moving parts, so there is less rolling resistance (because there is less weight in the valvetrain that is moving) and you get more power. Also, with fewer moving parts in theory it is less likely that something will break.
Also, 5 valves per cylinder breath better than do 4 valves per cylinder.
Also, Honda has had their fair share of issues with their 4-stroke dirtbike motors. Those engines are known for being, "valve eaters" and anyone who races a CRF or a TRX450R is well acquainted with adjusting valves, because Hondas require them frequently.
In comparison, Yamaha's YZF and YFZ 450s are known for being absolutely bulletproof.
Id love to see Honda buy out Polaris and Suzuki buy out Cat and for these 3 compainies to constantly try to one-up each other just like they do in the motorcycle and ATV market, but Im honestly not holding my breath.
Every year this rumor about Honda building sleds comes back up and every year it turns out to be nothing more than internet BS and pure speculation. I have a feeling that this is the case once again this year.
blue missile said:i dont buy it if yamaha can make a 1000 cc four work in a sled you really believe suzuki cant. i personally think suzuki would'nt share the technology kinda like when they partnered up with kawi but would'nt give up the sport bike or dirt bike ideas. which turned out to be very short lived.
Im not saying that Yamaha's 4-strokes never, ever fail, but its a pretty rare occurance and more often than not you can chalk it up to owner abuse.yamaholic22 said:Not to get off topic here, but this seems to just be becoming a yamaha spokesman forum. I have a YFZ 450, and believe me they are not bulletproof. Strong motors yes, and the best power to weight out there last I knew, but not bulletproof. Up until 2007 they had a HUGE oiling flaw from the factory where both connecting rod bearings did not get enough (or any) oil and the wrist pin would weld to the upper bearing or the rod would weld itself to the crank. A HUGE flaw that luckily I found a solution for before it ate my engine. Took them four years but they finally addressed it on the new ones. Every company has issues that get out the door sometimes, its frequency and how they address it that matters. Honda and Yamaha both build some pretty awesome machinery. Japanese R&D is a little different than in the states.
When I first read that comment by Arctic Cat I was kinda like, "what???". I mean, Suzuki has been downright dominant in superbike racing with the GSX-Rs and the Hayabusa is one of the fastest bikes there is. Suzuki knows how to build very powerful 4-stroke engines and I would say they could match Yamaha in terms of engine technology.yamaholic22 said:He's right. They looked at putting one of the bike engines in it as yamaha did but decided they could do just as well with bigger displacement, lower rpms which meant more torque and no gear reduction. Counter balancing shaft to control vibes.
Octane said:IMO they arent the end-all, be-all that a lot of people hype them up to be.
MSASRX said:No- I am talking about "power pulses" that allows the better traction on a dirt bike/quad on a four-cycle motor. you-know , it fires every-other revolution vs. a two-stroke that fires every revolution ???? Get my meaning??? Its a difference you can see on the race track with bikes-even with the novices. The four-strokes are hooking up (250's-450's) vs. the two-strokes which are spinning all the time and not hooking up as well.
Yes, Four-strokes have a WAY different "power band" also with much more low end/mid-rage grunt than most two-strokes, But the numbers (lb./ft.) of torque is not HUGE compaired to the two-stroke, just in a different area.
Look how long it took for Honda ,Kaw,suzuki to have a full line of 4-stroke MX bikes ?? Yamaha pioneered them, or took the chance anyway, now look-everybody has them and are better in many ways...
Price of sleds ?????? Holy $h!t - they are already very high !!!!!!
"you gotta pay to play" never so true now-a-days !!- eh?
-Matt