Register FAQ Community Calendar Today's Posts Search
Go Back   ScootDawg Forums > Performance :: Maintenance :: Technical > 125cc - 249cc
Reply
 
Thread Tools Search this Thread Display Modes
Old 01-31-2013, 02:19 AM   #1
scootin150   scootin150 is offline
 
scootin150's Avatar
 
Join Date: May 2012
Location: Anderson
Posts: 52
Ordered some Parts...Whats should be the Outcome?

05 United Motors 150cc-Stock
Well to start off im a big guy 250lbs to be exact and noticed my scoot was not getting into the rpms that great riding around town which was limiting my top speed. I Ordered a performance filter, HOCA 1500k Torque spring and 10g NCY rollers to replace the stock 13g. Should this minor cvt change help or hurt my topspeed and all around performance? I noticed on small hills my rpms would drop to 5k. Just looking for input from ones who have played with or have this setup. Bike has straight pipe (temporary) Race CDI and jetted btw. Thanks for any input



Login or Register to Remove Ads
  Reply With Quote
Old 01-31-2013, 02:24 AM   #2
scootin150   scootin150 is offline
 
scootin150's Avatar
 
Join Date: May 2012
Location: Anderson
Posts: 52
It has ran a best of 50-55mph gps at around 6500 rpms on flat ground. Im hoping this setup will get me to 60+ mph and better hill climbing speeds.
  Reply With Quote
Old 01-31-2013, 08:24 AM   #3
blueboy5000   blueboy5000 is offline
 
blueboy5000's Avatar
 
Join Date: Jul 2011
Location: Connecticut
Posts: 493
You WILL NOT have a higher top speed. You WILL have a better hill-climbing speed.

Your weight + your mods= top speed of 50 to 55 mph on the flats.

Also a straight pipe for the exhaust is potentially very damaging to your inner engine, specifically the valves.



Login or Register to Remove Ads
  Reply With Quote
Old 01-31-2013, 03:33 PM   #4
richardthescooter1   richardthescooter1 is offline
 
richardthescooter1's Avatar
 
Join Date: May 2011
Location: Nanty Glo, Pa.
Posts: 163
I'd be careful on what size torque spring, bigger the spring will take more rpms to enguage the clutch.
  Reply With Quote
Old 01-31-2013, 03:38 PM   #5
MEAN_MOTOFINO   MEAN_MOTOFINO is offline
 
MEAN_MOTOFINO's Avatar
 
Join Date: Jan 2013
Location: South Carolina
Posts: 233
so how does a straight pipe hurt the valves . I think an exhaust leak or a missing flange gasket has much more potential for damage. As me and Dr.scoot rode around all last summer with straight pipes and never had one issue . You just have to tune for it and it will be good!
__________________
05 Motofino 150cc



Login or Register to Remove Ads
  Reply With Quote
Old 01-31-2013, 05:00 PM   #6
scootin150   scootin150 is offline
 
scootin150's Avatar
 
Join Date: May 2012
Location: Anderson
Posts: 52
Im with u mean machine if straight piped hurts anything then why do racers use them on there scoots and how did we run all last summer with tuned carb with zero issues? Also im already runnin 50-55mph at 6000 rpms wide open which is low so why wouldnt lighter rollers that can get my rpms up to say 8000 max where the power is not get me to 60 mph?
  Reply With Quote
Old 01-31-2013, 05:20 PM   #7
MEAN_MOTOFINO   MEAN_MOTOFINO is offline
 
MEAN_MOTOFINO's Avatar
 
Join Date: Jan 2013
Location: South Carolina
Posts: 233
Yes you "ideally" want to rev about 7500-8000rpm...the sweet spot
__________________
05 Motofino 150cc
  Reply With Quote
Old 01-31-2013, 05:50 PM   #8
sharks06lly   sharks06lly is offline
 
Join Date: Sep 2012
Location: Tampa Florida
Posts: 5
straight pipes if to big or that dont have enough back pressure can mess up your valves. if you are running a very small diameter pipe and then it has a little bigger tip then i can see you being fine but i have seen stupid people mess up there cars and trucks with straight pipes and these chinese scooters are alot more finicky
  Reply With Quote
Old 01-31-2013, 09:06 PM   #9
scootin150   scootin150 is offline
 
scootin150's Avatar
 
Join Date: May 2012
Location: Anderson
Posts: 52
Sharks06lly do u even know what ur talking about i and mean machine have raced mustangs for years as well as build bikes such as my buddies cammed gixxer 750 we are pretty knowledgable on anything engine related. I have never ever seen a straight piped car or drag car running off header\headers warp or damage a valve in any way...yes maybe if u run right off the exhaust ports off the head! Moral of this story dont post if u dont know! How come 3/4 of the ruckus guys run straight pipes with no silencer with no issues??? Ok lets get off the straight pipe $HIT and get back to the cvt thoughts. Thanks DR.SCOOT
  Reply With Quote
Reply


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 01:55 PM.

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.