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Post by oldchopperguy on Sept 30, 2013 22:05:26 GMT -5
I fully understand the clutch n' gears riders not going for this. I would have felt that way myself a couple of years back... But now that I've ridden a scooter for five seasons, I'm used to it, and actually like it. Not necessarily MORE than a geared bike, but just different. As for the CVT tranny not holding up well with bigger engines, that also makes sense to my "brain" but Ford uses it in some of their performance CARS... And I did ride a Honda like this (750 I believe) last year and it was as fast as any 750 cycle from my misspent youth... 0 to 60 in about 5 seconds and I shut down at 115 mph out of respect for the dealer's demo... Hmmm... And Aprilla makes a big one like this too. And SNOW-MACHINES run High-speed, incredibly difficult duties in horrid weather in life-or-death missions with total reliability using similar trannies with monster 2-stroke motors. There must be something here we're missing...DEFINITELY NOT A SCOOTER THOUGH... That's the point. For an old-timer tired of shifting, or a new scooter-jockey who never did shift gears, this might be a slick alternative route to "motorcycledom"... LOL! I'm not sure about this particular model, but Kymco and other makers list these 250's as having the same performance as the 250 maxi-scooters; 75 mph+ top end and 65 mph+ cruise. That would still leave them a little "anemic" for the mph+ freeways around here, but, still 65 mph should be at least "doable" if you REALLY watch your rear and grit your teeth. (I tried driving my car 35 miles to Fort Worth without exceeding 65 last month) as a test. It was POSSIBLE, but pretty nerve-wracking with traffic blowing by me in the left lanes AND on the right shoulder, accompanied by the horn-blowing, one-finger salutes and the occasional flying beer bottle. 65 could get dicey on a 2-wheel vehicle that can be easily run over without consequences to the car/truck driver. At any rate, I do believe these automatic motorcycles are here to stay. I think they will soon grow some in displacement to allow the necessary 80 mph cruise though. Leo
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Post by scootnwinn on Sept 30, 2013 22:18:19 GMT -5
250's run quite reliably with CVT's. Going back as far as the Honda Helix and as recent as the Aprilia's current Hondas, Vespa etc. The Burgman I had was a 400 cc and when I changed the belt for the first time at 15,000 miles it took a very good eye to see that it had worn. Nissan too runs CVT's reliably in there cars, with excellent fuel economy. Once again we see that theory doesn't always match reality.
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Post by shalomdawg on Sept 30, 2013 22:42:20 GMT -5
howdy, i can't tell from the pic's but one advantage might be less tupperware to remove for certain servicing. but if they could make one with a shaft drive instead of belt-----so far the belt seems to be a major weakness of these twist and go scooters.
i have to admit, they look better to this old time trained eye.
lotsa miles and smiles to ya
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Sophomore Rider
Currently Offline
Posts: 191
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Joined: Apr 21, 2013 10:39:10 GMT -5
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Post by tarkus on Sept 30, 2013 23:22:51 GMT -5
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Post by prodigit on Oct 1, 2013 17:01:52 GMT -5
A lot of the big brands, actually use a chain in their CVT's, not a belt. I don't know about Suzuki Burgmans, but for instance Nissan uses one in their CVT engines on the Versa (and that's a 1,6-1,8 Liter engine). Personally, I'm not too fond of it... I doubt that the Chinese will make a reliable CVT transmission that can last longer than every 5k miles per belt. On my BMS-260 I only gotten 2,2k miles out of my belt, before it became too thin, and needed replacement. I noticed the CVT used to max out at 45, with 4,5k RPM, and by around 2k miles of riding , that 45 was more like 5k RPM.
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Post by urbanmadness on Oct 1, 2013 20:12:45 GMT -5
I don't agree... the Chinese gy6 150cc seem to be really solid with a CVT as long as you put a good belt in them. My buddies beverly 500 (great scoot BTW) is good for 105mph and has a belt driven CVT. My other buddies 500cc April is the same... CVT and very solid. both awesome, but heavy bikes.. Great milage and great Maintenance Interval. And UBer simple to work on. The CVT's have been around for ages and again pretty solid, I think.
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Post by prodigit on Oct 2, 2013 10:22:48 GMT -5
Depends on what you call great mileage! A chain driven bike has an avg between 25k and 50k miles before the chain is totally worn out (when properly taken care for). When leaving the bike rusting in the elements, and not lubricating the chain you might still get double the life of a chain compared to a CVT belt. Belt driven geared bikes usually last 100k miles.
And gas mileage on a CVT is always ~10% lower than chain driven with the same final gear ratio.
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