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Old 12-07-2006, 09:46 PM   #16
northern ON rider
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Quote:
Originally Posted by kdude
That was one heck of a cool scooter... was it a moded SR50 ? It didn't look like anything i've seen... Hp

before they started revamping their site, you could read (if you can read french) that the scoot in that video was built on a yamaha zuma. tail section from ducati 916, custom for the rest. these guys are scooter crazy...they would rather spend 5000$ modding a 50cc scoot to do 80-90mph than buy a bike that does it stock. It can be done, and with a cvt intact, but modified.

If you're looking for a great place for parts to speed up your scoot...the other place I found that is great is www.50cc.nl . huuuuge selection of stuff you can't get here. plus as a friend told me about them...they do this stuff everyday so they are more likely to be able to help you do what those here say can't be done.

here's the list of catagories for the zuma on their site: it's called a bw's there and here in canada.
Make: yamaha
Model: bw's

Select Part:
Tuning Parts:
crankshaft
carburettor
cdi unit
clutch
clutch spring kit
cylinder kit
cylinderhead
drive belt
exhaust
ignition
intake manifold
power box
power filter
reedvalve
reedvalve reeds
rpm limitters
shockabsorbers
special parts
torque driver
transmision set
variator
variator plate kit
variator weight kit

Other Parts:
accessories
body parts
gearset

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Old 12-08-2006, 01:28 PM   #17
kdude
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thanks bush monkey i'll check it out... Hp
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Old 05-09-2007, 12:13 AM   #18
yachtdog
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I just got my 2006 ditech sr 50 back from the shop.New:70cc polini big bore,leo vince carbon pipe,clutch,shock de restrected/re mapped ect.I only top out at 58 mph.Great low end and up hill power,but no 60-65 mph.What else can I do?Is there another re map?Or somethig we missed?
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Old 05-09-2007, 02:11 AM   #19
kdude
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Quote:
Originally Posted by yachtdog
I just got my 2006 ditech sr 50 back from the shop.New:70cc polini big bore,leo vince carbon pipe,clutch,shock de restrected/re mapped ect.I only top out at 58 mph.Great low end and up hill power,but no 60-65 mph.What else can I do?Is there another re map?Or somethig we missed?
I think that you should work with the roller weights. Does the 50 pull hard out of the blocks or it there some hesitation ?
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Old 05-09-2007, 05:57 AM   #20
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Quote:
Originally Posted by yachtdog
I just got my 2006 ditech sr 50 back from the shop.New:70cc polini big bore,leo vince carbon pipe,clutch,shock de restrected/re mapped ect.I only top out at 58 mph.Great low end and up hill power,but no 60-65 mph.What else can I do?Is there another re map?Or somethig we missed?
might need some fiddling with the weights. It might not hook up as quickly off the start but you could get that top end.

OTOH, topping out at 58 with great low end and climbing power sure sounds good!
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Old 05-09-2007, 06:55 AM   #21
Nd2Roam
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Could always try new gearing...

http://www.apriliaforum.com/forums/s...ead.php?t=8903

BTW, how did the 70cc kit effect your MPG's?
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Old 05-10-2007, 08:00 AM   #22
extrashot
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[quote=yachtdog]I just got my 2006 ditech sr 50 back from the shop.New:70cc polini big bore,leo vince carbon pipe,clutch,shock de restrected/re mapped ect.I only top out at 58 mph.Great low end and up hill power,but no 60-65 mph.What else can I do?Is there another re map?Or somethig we missed?[/quote

so much more.... how much time/$$ do you have? the mods are just beginning for you
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Old 05-16-2007, 09:06 PM   #23
yachtdog
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Thanks all of you for the tips...I think some more tinkering next month...but for now it does "smoke off the line" no sputtering and very quick.Perhaps I should be happy.Also still great on gas....
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Old 06-10-2007, 04:28 AM   #24
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my sr 50

Hi I have a aprilia sr 50 year 1997, it has only done 1080 km, I was wondering if anyone knows what modal this year is and what engine type it has in it, also I would like to know how much a leo vince type- zx chrome exhaust would increase my top speed, I think it has a normal exhaust on it currently but it is derestricted and I have had 55 mph out of it.

thanks
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Old 07-19-2007, 01:48 PM   #25
moneypit
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In response to how fast it can go, the Ditech in stock form is limited by things, gearing and rpm. If the rev limit was raised you would go faster with the engine beating itself to death, I'm fairly certain a stock crank is not up to a steady diet of that. The stock gearing is another limiting factor, even if you have a 70cc kit with stock gearing you might get to the top speed faster, and may pick up a mile an hour or two, but given the max revs they run at and the gearing your lmiited.

I have an 02 Ditech, with 70 cc Malossi, white contra spring, carbon fiber reeds, Leo Vince ZX, 10/41 gears, 6.5 gram rollers, kevlar belt and stock variator. I can get an indicated 70 mph down hill in a tuck, but the speedo is so far off its probably more like 64 or maybe 65.

Anyway I'm new to this board, its wonderful to be here, its certainly a thrill...
Ciao
Fran
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Old 07-20-2007, 11:47 AM   #26
brockster
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Quote:
Originally Posted by yachtdog
I just got my 2006 ditech sr 50 back from the shop.New:70cc polini big bore,leo vince carbon pipe,clutch,shock de restrected/re mapped ect.I only top out at 58 mph.Great low end and up hill power,but no 60-65 mph.What else can I do?Is there another re map?Or somethig we missed?
There's always Weight Watchers.

Those Aprilias are really nice looking bikes. One guy in our club, Gem City Rollers, has one.

Seriously, scooters speedometers and scooter owners most are mostly always optimistic when reporting the top speed. When checked with a GPS unit, my Elite 150's speedometer was reading consistently 2mph faster than it was going. And the Vespa speedo is ALL OVER the place. Sometimes high, sometimes low.

Worse than a Ford Escort fuel gauge.
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Old 03-10-2008, 06:43 PM   #27
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SR50 Seat Height

Hey all,

My wife expressed interest in the SR50 and I'd like to get it for her, but we went to go check it out and the seat is a little too high for her. She's about 5' 3" and had to stand on her toes just to reach the ground. I didn't think that would be too good because she's never ridden anything before Anyone know if its possible to lower the seat in any way?

Mark
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Old 03-11-2008, 05:35 AM   #28
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not SR50 specific, but....

My Super9 is tall as well. I'm 5'4" with a 30" inseam and I'm on tiptoes. The light weight of the scoot makes it easy to manage, though, as well as getting used to having just one foot down, flatfooted. She can also scoot (no pun intended) forward off the seat to get both down if she's in a situation where she wants to have both feet flat on the ground.
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Old 03-11-2008, 09:04 AM   #29
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Scootin'

Thanks Photog,

I'll share that with her but IMO, as a totally new rider, she'd be better off with something that she could flat foot. I also suggested "scooting" off the seat to flat-foot it, but it didn't seem to be too easy for her to do that when she tried it. I'd be concerned that coming to a traffic light stop in the city, that she'd not be able to get her feet down properly. Appreciate the reply!

Mark
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Old 03-11-2008, 02:29 PM   #30
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I hear ya'. I'm an MSF instructor and a lot of folks really appreciate starting off with a bike they can flat-foot...it does a lot for confidence. I had a Vento ZipR3i 50cc scoot that was shorter and IIRC I could pretty much flat-foot it or at least get the balls of my feet down solidly. Hope you get the info you're looking for--that SR50 really looks like a neat bike and a good long-term purchase.
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