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Post by ironmann44 on Jan 7, 2013 21:40:56 GMT -5
seen lots of posts about peoples top speed
just wondering at what rpm
been working on a 157qmj and just getting it running
still tuning right now according to the china tac and speedo
im doing 45 at a little over 7k rpm
thinking i need heavier rollers cause the thing takes off like a rocket
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Post by snugglebunny on Jan 7, 2013 21:43:20 GMT -5
i do about 45-47 at 5.5rpms
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Post by inuyasha on Jan 7, 2013 22:25:24 GMT -5
Hi
My 95 cc bbk 4 t redstreak scoot hits 54 mph at 8,500 rpms, thats right at the redline
My stock aprilia sr 50 r factory hits 51 mph at 8,000 rpms , redline is at 12,000 rpms though i havent pushed her to the limit as of yet
Take care and ride safely
Yours Hank
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Post by jakecalhoun56 on Jan 7, 2013 22:55:08 GMT -5
It depends on the roller weights, riders weight, etc. i've passed 150cc scooters on my little 83cc.
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Post by jonnyv on Jan 7, 2013 23:55:19 GMT -5
i max out top speed at 59mph gps right at 8000rpm scooter is stock 157qmj using 10 gram weights 1000 rpm torque spring uni filter and bolt on performance style muffler stock rebuilt carb with 115 jet with the needle set at the second land from the top of course orange coil and cdi. of course thats max top end flat road ect... i easily can maintain 55-56 without having to use wide open throttle it always seems like the last 1/4 throttle doesnt do much to increase speed but does make the engine work harder 11 or 12 gram have given me only negligible mph improvements while take off seems sluggish .
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Post by Deleted on Jan 8, 2013 0:13:54 GMT -5
I've had my chinometer well past 70 towards 80, I'd say 76-78mph but that thing can't be trusted and that's absolute top speed we're talking already cruising near 55 when starting down a steep long hill with a back wind leaning down into the handlebars in the direction of the earth's rotation. The tach is so deep in the red I don't even want to look but around 8.5 to 9 or so kilo rpm's. Among other performance items I've got Shinko SR007 tires which measure 110/90-12... Not sure whether those affect the chinometer versus the OEM Kendas it was designed with. On a good day I can get the tach to 10,000 on the stand. Oh, it has performance improvements. The three biggest performance improvers are the racing CDI, header pipe with glasspack, and leaning into the wind, at least in terms of bang for the buck. Yet I've had days when I can't seem to get much over 50-60mph Chino. That having been said I found a little app for my cellphone called Ulysse Speedometer. www.appszoom.com/android_applications/transportation/ulysse-speedometer_veng.htmlAccording to that, my Chinometer is off roughly by 5mph for every 20mph it indicates. So if the Chinometer says 60 I'm really only doing about 45? And near 80... Even at 75 Chino one could say true speed is likely more around 55..? That could well be but who knows, all whole buncha blowmeters if you ask me. Here's a picture of the engine bay... The Fat red wire at the bottom is a 10mm Spyro Pro racing ignition wire on a hot coil. The shiny pink thing is my oil catch can.  postimage.org/image/iu0buzajn/The intake manifold, although stock, has been hand polished: postimage.org/image/4ilf3thr7/For comparison here it is before polishing: postimage.org/image/e208trufv/ |
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Post by aaron420e on Jan 8, 2013 0:24:14 GMT -5
This is my 08 Keeway F-Act Racing Top speed of 68-70mph @ 11,300rpm Stage6 Sport Pro MKII Stage6 Pro Replica pipe Stage6 21mm Dellorto Black Edition Carb Stage6 R/T Viton Reed Block w/ carbon fiber reeds Naraku HS Racing Vario and Fixed half Naraku Racing Clutch Naraku Wing Cooler Bell +more Not in tune at time of making the vid. Just test run. Video is cell phone held in my hand so it is a little shaky. Also its in 720p My current top speed is around 60-64mph @ 11,100rpm MotoForce Sport 70cc Cast Iron Rest of mods same as above. R.I.P. MKII Needs a new piston  |
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Post by scootercapecod on Jan 8, 2013 9:11:51 GMT -5
I've hit 68MPH according to awesome HUD on my iPhone. the tach was showing 8.5K and mind you, this was going downhill, with a tail wind. Notes: I've modded the crap out of the stock airbox and exhaust, I also replaced the stock carb with a HOCA performance carb and a 110 main jet with the needle set in second position. Other than that I havent done much but my future plans are a 115mm variator, a 1500rpm clutch spring, and perhaps go with a different tranny setup. for gears
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Post by scootercapecod on Jan 8, 2013 9:21:29 GMT -5
This is my 08 Keeway F-Act Racing Top speed of 68-70mph @ 11,300rpm Stage6 Sport Pro MKII Stage6 Pro Replica pipe Stage6 21mm Dellorto Black Edition Carb Stage6 R/T Viton Reed Block w/ carbon fiber reeds Naraku HS Racing Vario and Fixed half Naraku Racing Clutch Naraku Wing Cooler Bell +more Not in tune at time of making the vid. Just test run. Video is cell phone held in my hand so it is a little shaky. Also its in 720p My current top speed is around 60-64mph @ 11,100rpm MotoForce Sport 70cc Cast Iron Rest of mods same as above. R.I.P. MKII Needs a new piston That is one bitchin vid!!! Great work! |
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Post by nate7504 on Jan 8, 2013 9:53:08 GMT -5
My 150 will top out at 56-57 on a flat road @7100 rpm, all stock exept for a free flowing muffler, before the muffler i could maintain about 52,my engine is a p157qmj.
Sent from my DROID BIONIC using proboards
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Post by prodigit on Jan 8, 2013 20:07:30 GMT -5
48 @ 6k rpm.
With lighter rollers I probably would be able to go faster.
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Post by wutzthedeal on Jan 8, 2013 21:33:39 GMT -5
Hit 42 a couple of times at about 7.5k.
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Post by Deleted on Jan 8, 2013 21:47:45 GMT -5
What's a relatively inexpensive way (no don't say duct tape lol) to mount a camera to my helmet?
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Post by teddy554 on Jan 8, 2013 22:05:43 GMT -5
sticky Velcro, its like tape on one side and the other is velcro
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Post by skuttadawg on Jan 8, 2013 22:30:05 GMT -5
My helmet camera came with a strap and a fixed mount too
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Post by wutzthedeal on Jan 9, 2013 2:53:26 GMT -5
sticky Velcro, its like tape on one side and the other is velcro This works but I didn't like it for mine; the constant sound of velcro ripping/popping as the wind would lift it and it would fall back and stick (rinse and repeat) is annoying. This is one video I did with it mounted like that; now I wear mine inside the helmet next to my temple and just hope that if in an accident, it will be too weak to lodge into my brain and will turn partially vertical or break... flip-side is I'd have a built in camera in my brain... |
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Post by Deleted on Jan 9, 2013 10:15:27 GMT -5
Yeah I went and ordered up what's called a hook-and-loop clinch strap a foot long and an inch wide so I can strap it to the front bottom part, the piece right in front of my chin on a full face helmet, my camera is older so it won't fit inside but I still don't feel like losing it and I think the clinch strap will hold it...
Because this is one of those things, I just installed a 115mm racing variator yesterday, along with the hand polished manifold and did some tweaking too...
And took it out, after some initial belt squeal which I hope goes away... May have to pull the cover off the CVT again, I can't recall for sure if I tacked that Variator bolt on tight.
But I did ride 60+ miles with it like that and I hit a speed on the chinometer that...
It's seriously so fast I have to take video or you won't believe it.
It's amazing, that little extra face surface totally got rid of the red lining, now she rides mostly in the 6-7k range which is near the engine's power curve, no more 8500 crap unless I'm on a very long and steep down hill.
I will, however, also stick my cell phone with the Ulysses GPSometer ON in my pocket, it has a function that records top speed and to me is far more believable than the Chinometer.
For now here's a quick vid of it all put back together right before the ride:
(bit of smoke at first cuz I forgot the rear tire was still on the ground lol)
Even in that vid she's not hitting 10k rpm's at all, I know
it's not clearly visible but that's the 9000 line on the odo.
Once I get it all set up for video I'll take it out for a ride.
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Post by Blueboy5000 on Jan 10, 2013 7:12:44 GMT -5
62mph at 8,200 rpm on the flats. Mods are; open element PAPER filter (cone style) free flow exhaust, 115 main jet, unlimited CDI, 11g rollers, Gates 842 belt, RED clutch springs. It might do more, but I didn't want to push it harder (2011 Baccio/Roketa mc-150-t)
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Post by scootercapecod on Jan 10, 2013 13:35:01 GMT -5
Yeah I went and ordered up what's called a hook-and-loop clinch strap a foot long and an inch wide so I can strap it to the front bottom part, the piece right in front of my chin on a full face helmet, my camera is older so it won't fit inside but I still don't feel like losing it and I think the clinch strap will hold it... Because this is one of those things, I just installed a 115mm racing variator yesterday, along with the hand polished manifold and did some tweaking too... And took it out, after some initial belt squeal which I hope goes away... May have to pull the cover off the CVT again, I can't recall for sure if I tacked that Variator bolt on tight. But I did ride 60+ miles with it like that and I hit a speed on the chinometer that... It's seriously so fast I have to take video or you won't believe it. It's amazing, that little extra face surface totally got rid of the red lining, now she rides mostly in the 6-7k range which is near the engine's power curve, no more 8500 crap unless I'm on a very long and steep down hill. I will, however, also stick my cell phone with the Ulysses GPSometer ON in my pocket, it has a function that records top speed and to me is far more believable than the Chinometer. For now here's a quick vid of it all put back together right before the ride: (bit of smoke at first cuz I forgot the rear tire was still on the ground lol) Even in that vid she's not hitting 10k rpm's at all, I know it's not clearly visible but that's the 9000 line on the odo. Once I get it all set up for video I'll take it out for a ride. Great vid! That tells me your carb isn't adjusted right, you should hit 13.8K o that tach no problem. warm her up and see where she sits with the A/F screw |
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Post by yukon2tank on Jan 10, 2013 17:49:13 GMT -5
I can get 62 on a flat surface and 58 on a slight incline. not sure what rpm as my bike has no tach
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Post by Deleted on Jan 13, 2013 2:56:54 GMT -5
Great vid! That tells me your carb isn't adjusted right, you should hit 13.8K o that tach no problem. warm her up and see where she sits with the A/F screw I appreciate the input... Only screw I see is the low idle jet one... Doesn't do much good to adjust that for the top end. It's a stock (albeit 26mm) carburetor. |
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