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Post by 49ccsofdestruction on Apr 6, 2012 7:43:16 GMT -5
hello fellow scoots! i've been reading posts here for a while and have noticed that most performance upgrades require further mods or adjustments to make them work properly. things like changing variator weights requirs also changing a spring ,or an air box mod means you rip apart the carb and start fooling with jets. what performance mods can i do or what parts can i buy(simple bolt on) to my scoot that wont cause problems elsewhere. tuned pipe, larger dia. rear wheel, stuff like that. oh i have a tng ls49. top speed is 42 mph with my 200 pound fat ass on it. thanx :scoot2:
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Post by jmkjr72 on Apr 6, 2012 8:45:08 GMT -5
there is no such thing as a bolt on part on a scooter
anything that changes the power band will cause a need to retune the trans
even a small change in the rear wheel size is like putting large oversized tires on a truck you need to adjust the gearing (this can be done thru rollers in cvt scoot and not an actual gear change unlike a truck)
the only true plug and play mod is a bigger scooter
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Post by 90GTVert on Apr 6, 2012 8:59:09 GMT -5
changing variator weights requirs also changing a spring That actually doesn't require a contra spring change if you get the right weights. The main deal with swapping roller weights or sliders is that you should actually spend the time to experiment with different weights to get the best result if you want the best performance. That's how it works with a lot of parts of tuning. The tuned pipe you mention would require tuning. For best results they often require jetting changes, a clutch spring swap, and sometimes a roller weight or contra spring swap. Any time you work on the engine, expect to affect the jetting. You won't with every single mod, but the major stuff. If you change the RPM where the engine makes the most power (tuned pipe, cylinder porting) expect to need CVT tuning to get the most from it. Any big gains tend to require tuning. The larger rear wheel or tire will go one of two ways. Either you won't get a lot of change from it, or if you go big enough you'll have to mod the cases to fit and your takeoff will change so much that you'll want to retune the CVT or swap out the final drive gears. Here are some things I could suggest that often don't require changes elsewhere : Adjusting squish/compression. Sometimes compression is a bit low from the factory. This can often be remedied by checking squish clearance and removing the head gasket if it still allows for enough clearance. As long as your scoot is in tune now, this probably won't require jetting or CVT adjustments. If your compression is really low and you raise it considerably, then you might make a good bit more power and end up having to fiddle. More info below : Clutch springs are another mod that you can often do without having to change other things. If you feel like you're initial take off is slow, if it's bogging and not getting into the power very quickly, you can try swapping in stiffer clutch springs. It still requires tuning though, not just swapping. There are three common spring stiffnesses that most people use and they're rated as 1,000RPM, 1,500RPM, and 2,000RPM. The higher the number, the stiffer the spring, the later the clutch engages. Some might swap in a 2,000RPM spring set and get excellent results, some may like 1,500. Depends on the scoot and a bit on rider preference. Most of the time I like 2,000RPM springs for 2 strokes, but not always. Variator weights as well, as mentioned briefly earlier. Again, pretty much anything you mess with in the CVT requires a little time experimenting to get just right, but if you get the weights just right you shouldn't need to swap anything else around for them to work well. Going lighter increases you acceleration and cruise RPM, going heavier decreases RPM. Obviously the weights don't change your engine's max RPM or powerband, but rather the idea is to adjust so the CVT keeps in your engine's powerband as long as possible. On the same note, a performance variator is a good upgrade that doesn't require changes elsewhere in most cases. You'll have to swap around roller weights to see what works, and sometimes you may want to use a spacer on the drive boss to get the best results on the low end, but you don't need to mess with areas other than the variator usually. Here's a review of a performance variator on my Project 90... 49ccscoot.proboards.com/index.cgi?action=display&board=yamajog&thread=1712&page=2#28729 |
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Post by aeroxbud on Apr 6, 2012 19:33:42 GMT -5
My mate ran an over size tyre on his vespa 250gts in a quest for more speed and it really used to go through rollers
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Post by reveeen on Apr 6, 2012 21:07:28 GMT -5
I'm *thinking* maybe a pair of chrome mirrors, or maybe some stickers, both mods should be reasonable trouble free and won't mess with other stuff requiring adjustment.
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Aaron420e
Scoot Enthusiast
2008 Keeway F-ACT Racing
Posts: 430
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Post by Aaron420e on Apr 6, 2012 21:38:35 GMT -5
I'm *thinking* maybe a pair of chrome mirrors, or maybe some stickers, both mods should be reasonable trouble free and won't mess with other stuff requiring adjustment. :lol2: :clap: :bestpost: |
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Post by 49ccsofdestruction on Apr 6, 2012 21:42:12 GMT -5
ok so i guess my quest for the perverbial "free lunch" may be in vain. but i appreciate the info and will review all suggestions. as for reveen's answer where can i find the mirrors and stickers! lol
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Deleted
Deleted Member
Posts: 0
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Post by Deleted on Apr 6, 2012 23:04:45 GMT -5
the most hassle free thing you can do is a windshield. it will give you +2 or maybe +3 mph.
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Post by 49ccsofdestruction on Apr 7, 2012 8:44:59 GMT -5
1FASTQMB
thats a good one! thanx. never thought about aero mods.
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Post by moore716 on Apr 7, 2012 9:19:42 GMT -5
one thing I can def say is if you are looking for more speed do not upgrade to a more accurate speedometer set up. I did and lost about 8 mph.
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Post by 49ccsofdestruction on Apr 7, 2012 19:17:04 GMT -5
moore716
yuuuuuuup! been there and done just that....lost about 5 mph puttin the bike speedo on it.
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Post by dirtymoosetaint on Apr 7, 2012 19:59:09 GMT -5
What about light kits? I just ordered soem blue neon light to hopefully install underneath the front wheel well and rear wheel area. we'll see what happens...lol
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Post by jmkjr72 on Apr 7, 2012 20:41:36 GMT -5
these things dont even make engouh juice to run a small ele fule pump for an efi sytem with out charging system upgrades
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Post by reveeen on Apr 8, 2012 3:14:25 GMT -5
The *trick* is: you can add stuff...... just don't hook any of it up (I *think* I will duct tape that big bore kit to the rear fender...... should be worth 5 mph with a tail wind, my last mod was a cigarette lighter taped to the headlight....... don't ask what I did with a dildo)
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