|
|
Post by zugzug on Mar 20, 2010 12:12:24 GMT -5
Well still waiting for my wrench to arrive but the weekend is so nice I went down to Harbor Freight this morning to see if they had one of the 12v impact wrenches for 29.95. None of the employees new where they were and said that they were out but I went on my scavenger hunt anyway. This is what I found buried on a bottom shelf in the wrong section.  The best part is they had them on sale for 24.95. ;D During my search expedition I ran accross a table that had some unboxed items for sale. They had a sidewalk sale last week and some stuff got rained on and the cartons got damaged. This one is some sort of scale that lists for $25 and they had it marked 11.99.  The lil booklet said something about it can weigh in oz and grams so I decided to get it and use it for weighing my variator weights. I just ate a nice big lunch and now its time to try my new tools out! I let ya know how it goes later. -Zug |
|
|
|
Post by zugzug on Mar 20, 2010 15:19:54 GMT -5
On the 3rd hit the bolt spun off! yay! And the scale worked great. Heres a pic of the weights on the scale. Stock was 17.  and the new ones were 12g.  I already decided beforehand that if the stockers were 17 I was going to go half n half with the 12s and 17s. Acceleration increased somewhat and is at a good rpm for crusing around. |
|
|
|
Post by zugzug on Mar 20, 2010 23:35:27 GMT -5
Heres a shot of the variator with the mixed weights.  |
|
|
|
Post by imagesinthewind on Mar 26, 2010 21:13:20 GMT -5
Cool! Does it climb hills better?
I found my LaVie had 17s (if i remember correctly) and I went to 17/11s on it so when it hit hills it didn't lose so much speed. Worked pretty well, but now I have the Peg. Don't think I will be even looking at what's in her.
|
|
|
|
Post by zugzug on Mar 26, 2010 22:14:08 GMT -5
yeah, the stock 17g had it shifting up at a really low rpm. I don't have a tach but I do know it was way below the power curve. Running the mixed weights puts me a lot closer to where I want it but its still just a bit lower than where I want it to be. The mixed weights don't always shift smooth. Probably too much difference between the two( 12g-17g). I have 14g sliders on the way so it should shift nice and smooth just where I want it to.  I also bought a teflon coated variator to go with the sliders but it didn't arrive in the condition I had hoped  so I haven't decided what I'm gonna do yet. But yeah, It does accelerate better. I also replaced the fuel pump with a mikuni and removed part of the pair system and the tank vapor recovery. So now I have the new pump with its own vac line and the cutout valve on its own vac and everything is running great! ;D -Zug |
|
|
|
Post by zugzug on Mar 29, 2010 20:19:13 GMT -5
Heres a pic of the stock variator and the teflon coated variator. The performance vari shifts better than the stocker with the mixed weights. I didn't weigh them but I can tell the stocker is heavier than the new one. The deeper ramp cutouts one the performance vari should give me more top end but I haven't had a chance to get out and see where it tops out yet. (stock was 57 on the chino-meter) Maybe when it quits raining.  I actually get up to speed pretty quick but it still takes a long stretch to get to top speed.   -Zug |
|
|
|
Post by zugzug on Apr 3, 2010 10:03:50 GMT -5
I got the sliders in and decided to go ahead and change them. Heres what the teflon coated variator looks like after just 30 miles. IMHO the teflon coating is just sales BS. The variator is slightly lighter and has a larger circumference though.   I cleaned out the sticky remains of the rubbed off teflon coating and put in the 14g sliders. I had guests coming over so I could only take it for a quick 4 mile test ride. The sliders are smooth shifting and they put me right where I wanted the vari to shift. It operated smooth up to 50mph. I didn't have a long stretch on my short trip to verify any top end changes. I guess Ill find out this afternoon. -Zug |
|
|
|
Post by Don on Apr 15, 2010 6:40:46 GMT -5
i say the next time i get a 150cc scoot i will be investing in a tral tech speedo for her......it would be so nice to really know how fast you were going....
|
|
|
|
Post by qwertydude on Apr 17, 2010 9:17:32 GMT -5
A gps would be a more useful speed reading tool. No calibration needed and if you want it can give you directions too.
|
|
|
|
Post by speedracer12 on Apr 20, 2010 19:26:55 GMT -5
Zug, which variator did you purchase which was Teflon coated? I went out and purchased a NCY Teflon variator and changed my sliders tonight and after at least a 1000 miles the Teflon is still there.
I've been running Dr Pulley 12gram sliders and had a set of 11 gram on hand. So I decided to mix them and there is a difference in RPM's. I have never hit 8000 RPMS's but tonight I did. Not sure if I am now wasting a lot of gas with running higher RPM's if so I'll go back to the 12 gram sliders. Speed increased about 4 MPH.
|
|
|
|
Post by garyr on Apr 20, 2010 21:28:53 GMT -5
I have been able to get the Lance 150 Touring out for the last couple of days and with the new, 14 oz iirc, rollers I installed over the winter, it takes off so much nicer. My wife and I went to supper tonight and it was her first ride of the season on the scooter, and again I noticed how much more pep the engine had. I am really pleased with the new weights. I had been thinking seriously of trading for a bigger scoot, but, don't think I will now. (Hmm, let's see, +- $30 for new weights or $2000 for a new 250 cc?) javascript:add("%20:D")
Garyr
|
|
|
|
Post by zugzug on Apr 21, 2010 21:42:07 GMT -5
Zug, which variator did you purchase which was Teflon coated? I went out and purchased a NCY Teflon variator and changed my sliders tonight and after at least a 1000 miles the Teflon is still there. Same variator, the NCY. got it from enviromoto. They probably ran out of teflon and decided to use paint that day... ;D |
|
|
|
Post by crashalot on Jun 10, 2010 3:23:30 GMT -5
i'm 210 lbs and the most comfortable ride that pulls hard all the way and still gets nice top speed (58.5mph-garmin) without screaming the nuts off of it.. mix 11's and 14's.
sunl-150cc, pipe, unifilter, and rejet to .15. briggs and stratton vacuum lawn mower fuel pump ($17)
|
|
|
|
Post by turtle8 on Jul 30, 2010 14:51:13 GMT -5
Scooter: Znen 7c 150cc (same as Lance GS-R)
My weight: 190lb
Stock rollers: 17g (est.) (could be 16g - scale is not in grams, nor 100% accurate)
New rollers: 11g
I wanted to increase top end speed and I read that usually mean heavier rollers. Others in this discussion said that they've gone to lighter rollers without losing top end speed. What I've found is my 0-30mph times are slower with my usual throttle application. 40-50mph times are much improved. I hadn't had a chance to test top speed, but there seems to be a lot of speed left.
Before the new rollers I maxed out at 52mph on my calibrated bicycle speedometer. With the new rollers engine speed is a very constant 6,000rpm. With the old rollers are only hit 6,000 at top speed.
-Michael
|
|
|
|
Post by yowster on Aug 23, 2010 2:07:59 GMT -5
One thing I've noticed on the gy6 engine is that alot of the gearing is different from model to model. Not so much as for the variator and rollers. The biggest difference I've seen on the variator is the ramp plates. On znen manufactored models they are lower angle than most stock variators and they make it catch quicker, kinda like a malossi variator. They come with heavier weights around 16 gm. I tried their ramp plate on a racing variator with them 16gm weight and a race face plate on a 10" wheel version motofino and it hits hard on take off even with that weight. Stock is 14gm and this little scooter is not much bigger than a 50. It had more top end also but the mid range was a little slow getting up to speed until you got over 40 and then it would really go. The face plate just makes it smoother through out the entire range. I swithed it back to the original with just the racing variator and 14 gm rollers and it is quicker throughout the range but not as much top end. The biggest difference is the znen's ramp plate will make it hit hard no matter what weight roller you use. Most race variator's that I've seen on the gy6 are just like the stock one's but lighter. It's just like the 2 stokes I've worked on and I've tried a bunch of differnt one's but Mallossi is by far the better because of that lower ramp angle. Polina is good but they make it scream more. The flat face plate is ideal for everyday road riding because of it's smoothness. Racing purposes not a big difference. There is a whole line on different gearing for these gy6's but if you want the top end gear you'll have to go way down on roller weight and if you want to wheelie you'll have to play with it.Most manufactors do not tell you what the gearing is but a 10",12" ,13 and even the 16 wheel versions do not have the same gearing at all. One 12" version to another 12" version will not be the same because of the style of the scooter. Rider weight really doesn't have a great deal to do with it unless you are extremely heavy then you need a bigger bike. If it run's right it doesn't matter on the weight of the person compared to the roller weight if it is close. If you change the gearing of course you have to change the roller weight to dial it in but once it's dialed in it's going to run the same no matter how much you weigh.
|
|
|
|
Post by turtle8 on Aug 29, 2010 20:46:16 GMT -5
I think I've got my scooter dialed in just right now. I've got 13g rollers installed and I swapped the 835 20 belt for an 842 20 belt. 0-30 mph acceleration is good, 35 - 40 mph cruising is comfortable with a nice 5,000rpm and 40mph and up acceleration is very good. I hadn't had an opportunity to test top speed because I haven't been able to get out of town.
|
|
|
|
Post by dannicus on Oct 9, 2010 20:02:17 GMT -5
Picked up a set of 12g and 14g weights for my Znen Milan 150.
Stockers were 17g. Tried every combination and ended up settling for all 12s. It definately accelerates better than stock, but it could be better still. I'm only spinning around 2600 rpm cruising around town and going WOT from 30 only brings the revs up to about 3200 rpm. Pretty tame. Top end remained the same throughout, btw. I gotta find that sweet spot, but it's looking like if I tune it to accelerate WOT at above 5500 rpm, it'll probably cruise at around 5000 rpm. That might prove annoying. Anyways, I'm going to pick up some lighter rollers. Maybe 9 grammers this time.
<UPDATE>
I figured out that my tach was reading about half of actual RPMs, so 9g weights are gonna be pushin it. WOT from 30 with the 12s was actually closer to 6krpm.
Going by feel, I think I'm gonna stick with a mix of 12g and 14g. 12gs sat a little high in the revs when I was just cruising and 14gs were barely an improvement from the 17gs.
|
|
|
|
Post by dannicus on Oct 21, 2010 14:32:51 GMT -5
New update! I went ahead and dropped in 9 gram weights and it turns out that 9 is the magic number for this bike. It cruises at aroun 5800-6100 around town. It "downshifts" at WOT bringing the RPMs up to 7000-7200 which i found to be where the peak power is. Now it climbs hills like never before and if it loses any speed at all it still holds the engine right in the powerband. A hill that would pull me from 45mph down to 30mph, now only pulls me down to 40! ;D It only took me trying like 6 or 7 different combinations of weights.  |
|
|
|
Post by meta82 on Jan 3, 2011 22:08:06 GMT -5
Has anyone messed with roller weights in a 125cc scooter? I am thinking of trying sets of 10,11, and 12 gram weights in my 125cc scoot. Does this sound right?
|
|
|
|
Post by jliprie on Jan 8, 2011 18:55:02 GMT -5
I am in the middle of doing several mods and using a digital dyno with each step. Having some interesting findings. Since this post is about the variator here is some of my prelim data:
Stock 14gm variator
max accel .71g
max vel 54.07 @ 6900rpm
0-60' 2.81 sec
1/4mi 22.2 sec
0-10mph 0.65 sec
0-30mph 4.475sec
0-50mph 15.63
I am trying a dual ramp variator design. So far have not been able to beat the stock variator.
12/16gm wts
max vel 46.7mph at 6000rpm
8/11gm wts
max vel 49 mph @ 6200
8/9gm wts
max vel 50.8 @6900
0-60' 2.87sec
1/4mi 22.88sec
0-10mph 0.790sec
0-30 4.66 sec
0-50 19.65 sec
The dual ramp design simply could not beat my stock variator in both low end acceleration or top speed.
PS I have done the same with a performance clutch and soon I will have data on the carb jetting. My plan is to post all of this on youtube when done. -JL
|
|
|
|
Post by speed0meter on Mar 29, 2011 18:13:02 GMT -5
I have a ? about roller weights. are the ones for 150cc the same size? not weight. I see some that are 23x18 and 19x5.5 I dont want to waste $$. I have a stock variator & was thinking of doing what I read earlier in this post. instead of buying lighter weights just take some off on opposing ends. kinda stuck
thanks
|
|
|
|
Post by MrBraco on Mar 30, 2011 8:20:31 GMT -5
Same here speed0meter, i found my stock rollers are 18x14 13gr (150cc), The shop is selling 20x15, can i use those? i want to put heavier weight .. or stronger torque spring (say 2000), from what i understand, a stiffer spring will add more speed without loss in acceleration.
Can you confirm?
And since my engine is loud enough already, I want to go towards more top speed.
|
|
|
|
Post by sinister357 on May 7, 2011 15:31:07 GMT -5
i just order these in 12g. hopefully they work out in my 150cc gy6 for my initial weight trial. i haven't opened her up so i have no idea what the stock wt is in my fiji. hopefully it's 14g so i'm only going down 2 grams for an increase of ~1k rpm at top end. does that sound about right? i will post results when installed... 12g rollers from scrappy  |
|
|
|
Post by sinister357 on May 11, 2011 11:43:56 GMT -5
today was raining so i took the time to take her apart to change the cvt variator weights. upon inpection, i realize my stock wts were already 12.8g - and i was only going down to 12g for my new wts. as expected, difference wasn't drastic but very noticable. more exceleration for 30 to 40 - maybe higher. normal cruising speed of 40 mph at 5K rpm is now at 5.5-5.6K rpm now...right at the tip of peak power curve... i'm satisified. glad i didn't go too low. probably lose too much fuel efficiency.
Scooter: Roketa 150cc Fiji
rider weight: 130lbs
stock variator wts: 12.8g (40mph @ 5K rpm)
new variator wts: 12g (40mph @ 5.6K rpm) didn't test above 40 mph.
|
|
|
|
Post by sinister357 on May 16, 2011 20:27:28 GMT -5
Scooter: Roketa 150cc Fiji
rider weight: 130lbs
stock variator wts: 12.8g (40mph @ 5K rpm)
new variator wts: 12g (40mph @ 5.6K rpm) top speed 55mph @ slightly under 7,000 rpm..
*updated*
top speed run... 55mph @ slightly under 7,000 rpm. what do you guys think? any adjustment needed? where should i be?
|
|
|
|
Post by pacman on Jun 5, 2011 18:17:45 GMT -5
150cc jonway [gator] me lb 250 it al stock and i top out at 63mph on flat grond nice enof for me me and my wife get on the scoot shes about 200 a little slow but i still get ther and it all stock
|
|
|
|
Post by sinister357 on Jun 6, 2011 10:20:08 GMT -5
150cc jonway [gator] me lb 250 it al stock and i top out at 63mph on flat grond nice enof for me me and my wife get on the scoot shes about 200 a little slow but i still get ther and it all stock it's not the top speed...it'd how long it takes to get there. ;)there's always room for improvement in tuning your rollers. |
|
|
|
Post by sarge707 on Jun 24, 2011 16:10:58 GMT -5
Great Forum! My gy6150 is on the way so I have a theoritical Question? 1-You have 16 rollers STOCK a-You replace with 6 14 Gr rollers. b-You replace with 3 15 Gr and 3 13 Gr rollers. What would really be the difference since the median is still 14 GR?  |
|
|
|
Post by takadi on Jun 28, 2011 1:46:52 GMT -5
hmmm I was wondering that question too. The impression I got from what I read is that it does make a difference
|
|
|
|
Post by vindicated777 on Jul 4, 2011 12:51:56 GMT -5
I've got a new Hoca teflon variator...mixed 3 12s and 3 13s..max speed 55 well that's the fastest i've gone still with throttle left...amazing right..i'm thinking what can i do to make a bit more top end..maybe...62-65 mph..drop to all 12s? Then from there i have 8gram and 9gram rollers...too light maybe? Don't want the engine screaming at me!!!
|
|
I also bought a teflon coated variator to go with the sliders but it didn't arrive in the condition I had hoped 
so I haven't decided what I'm gonna do yet. But yeah, It does accelerate better. I also replaced the fuel pump with a mikuni and removed part of the pair system and the tank vapor recovery. So now I have the new pump with its own vac line and the cutout valve on its own vac and everything is running great! ;D 
I actually get up to speed pretty quick but it still takes a long stretch to get to top speed. 
