• Welcome to RCTalk! 🚀

    Join the #1 RC community where hobbyists connect, share, and get expert advice on RC cars, trucks, boats, drones, and more!

    • ✓ Friendly & passionate RC enthusiasts
    • ✓ RC tips & troubleshooting
    • ✓ Buy, sell & trade RC gear
    • ✓ Share builds & upgrades

dirtbike

This site may earn a commission from merchant affiliate
links, including eBay, Amazon, and others.
F

flandersander

Hardcore RCTalk User
Messages
1,408
Reaction score
0
Points
0
Location
Canada
RC Driving Style
  1. Bashing
Hey guys. My little guy has a yz 80. He loves it. The only issue we have with it is that the power band hits really hard. I mean, it wheelies when it hits and the tire is always spinning. Is there any way to adjust it? Thanks
Keagan
 
I don't know if you can adjust it but my little cousin has the same dirtbike and when the powerband kicks in, it takes off!
 
as far as i know that there is know way to adjust it the only adjust i can think of is how much throttle he gives it i used to have a 1991 i think yz 80 when i was about 12 or 13 and man was that thing fast as hell just like you say wheelie right now it was great
 
Soften up the suspension, that will tame the wheelies.....some.
 
tell him to lean more towards the bars when he feels the powerband coming up. after a while he will get use to it and be able to hammer the throttle with no problem.. he will have a blast on it
 
very fun bikes but about the unsmoothest power band, all of the main 4 80's are/were that way, scary little bastards for full grown guys lol, dump you on your ass before you know whats happening lol.
 
Actually, adding a flywheel weight will tame it down a LOT. Enduro riders use them to smooth out the power in the woods. It makes a HUUUGE difference.
 
If you want the powerband to hit less, and ALWAYS hit less, you would have to get it ported. Not really worth it, because then you will want the powerband later on down the road, and then have to get it ported again.
 
From Steahly Flywheel web site (http://www.steahlyoffroad.com/about_steahlyweights.shtml). Read the bolded section:

When we started making flywheel weights in 1987 very few riders understood the benefits of adding flywheel weights. Since then the popularity of adding flywheel weights has increased dramatically. More and more riders discover that they can go faster for longer with the smooth power delivery, better traction, and reduced stalling that Steahly Flywheel Weights provide. Adding a flywheel weight will increase the rotating mass, or inertia, of the motor. The result is an engine that is a little slower to rev, has more controllable power delivery and less hard hitting power, a more usable low to mid-range, and is less likely to stall at slow speeds or with the rear brake. What you will feel is better traction when it is slippery or hard pack, a torquier and broader powerband, the top end
power on many bikes will be improved with less tendency to lose RPM's when climbing or hitting obstacles. The
easier to control power will help you conserve your strength and energy, plus many bikes start easier with the
added weight. Most Steahly Flywheel Weights screw over top of the stock ignition flywheel using our exclusive
patented mounting system. Most can be installed in less than a half hour without removing the stock flywheel
from the engine. Our weights are also easily removed so you can change the power delivery back to stock for
different riding conditions. Steahly Flywheel Weights are machined from solid steel billet on computer operated lathes for the ultimate in balance, trueness and strength. Our weights are designed to fit each specific model of motorcycle for a close fit and best possible performance. For most models we offer several different weights so you can choose the amount of weight to suit your riding style and conditions. Generally for a fast, aggressive rider or for faster terrain a light to medium flywheel weight would be the best choice. For a slower more casual rider or for riding slower technical terrain a heavier weight is ideal. Call us and we will be happy to discuss your situation and make suggestions. We also carry a wide range of other off road accessories, many of which are special or hard to fin
Click to expand...
 
Last edited:
WOW. Thanks alot all of you. Sorry for the delayed response. i'll look into that, thanks motogod. Oh, I have another question. He wants it loud (kids). hahaha, is there an exhaust that is loud by nature? OR, better yet, is there a way to modify the stock exhaust? It has to be temporary (reversable) though because we all do a bunch of trail riding, and a loud exhaust isn't allowed. Any ideas? Or maybe a silencer that increases power? He just wants different exhaust so I assume he's open to suggestions.
 
Last edited:
Look into fmf, i have an fmf pipe on my dirtbike and i really love it!
 
Pull off the exhaust and take some of the packing out of it and it will get a bit louder. You may lose some power by doing that, but sounds like you're trying to tame it a bit anyway. Good thing about that is for $9 you can just re-pack the silencer when your done ;-) If it's the stock silencer, you may have to drill out the rivets on it, and if so...just replace them with some self tapping metal screws and you should be good to go.
 
That seems like a ton of work. There's no baffle that can be removed or anything easy? see, his dad isn't very good with stuff like this, so i'll be doing the work lol.
 
Actually, removing packing is dead simple. Remove the single bolt that holds the silencer on and slip it off. Unscrew (or drill out the rivets) and remove the end cap (usually 4 screws or 4 rivets), pull the end cap off to expose the baffle with packing wrapped around it. Remove some packing (make sure you leave some in there!) and then re-assemble using the screws you removed, or some self-tapping metal screws, or if you have a rivet gun use that for the best fit.

Should take you no more than 30 minutes ;-)

Here is a write up on how to do it with better details: http://www.dirtrider.com/adventures/protips/141_0309_repack/index.html
 
i would say do the flywheel weight but take it off when he gets more used to the bike or bigger
 
Those flywheel weights are pretty steep in price. Thanks motogod. He asked me to ask you what the loudest pipe you can get for it is (damn kids). Thanks
Keagan
 
Last edited:
+1 on motogods suggestion. the pipe has fiberglass in it. naturally removing some will allow more sound to travel through and if your laws are slack enough you could get away with leaving it that way
 
So they did a transmition oil change today. The service manual reccomends using 10w-30 motor oil. All the local store had was 10w-30 diesel engine motor oil. Does it matter? It seems to run alright. What do you think?
 
I always use motorcycle oil in a 2 stroke tranny. Remember, the clutch is a wet clutch and the oil you use for the tranny is used for the clutch as well. You CAN use regular car motor oil, but make sure you change it after every ride or 2. It gets BEAT up by that clutch. If you buy the motorcycle tranny oil it will last a lot longer on a weekend warrior bike.

As far as loud pipes, it's a 2 stroke. They are all loud ;-) Just remove some packing from the stock silencer and he will get a more raspy tone out of it. Those damn 80s are loud enough already! lol
 

RC Builds

Back
Top