|
|
Post by Kami no Chiizu on Jul 28, 2008 19:49:37 GMT -5
I'm happy for you Smartbomb, but the point is you didn't spend 100 bucks and a half hour of work to get to 50 mph.
|
|
|
|
Post by smartbomb on Jul 28, 2008 19:56:52 GMT -5
Did I say I spent $100, no I just said its posible to go 50 mph without going inside the engine and spending a ton of money. Isnt this forum about sharing information that can help others?
|
|
|
|
Post by chanito on Jul 29, 2008 6:30:29 GMT -5
Did I say I spent $100, no I just said its posible to go 50 mph without going inside the engine and spending a ton of money. Isnt this forum about sharing information that can help others?  What Kamino is trying to say, and i agree with him 100% is that there is a lot of people that think that reaching 50 mph is easily accomplish with a set of tools and patience, the reality is that, is way harder than that, you are a exception to the rule, but still you had spend a lot of money on a special flywheel an aftermarket carburetor and exhaust and jet and stuff, i have done a lot of work on the engine, and even though i do not have your resume, i consider myself above average on mechanical skill, as i have earned my living as a race car mechanic and still work as a head tech on car dealership, and still do not get to that magical 50mph on flat ground  |
|
|
|
Post by smartbomb on Jul 29, 2008 10:16:49 GMT -5
Actualy you do have nearly the same resume, in fact you know me, I just bought a piston from you.
I think you are a carb and jetting away from an easy consistant 50-53 mph. I notice that guys who have the BBK with a rejetted stock carb can't seem to reach 50 but there are more than a few with stock engines, no cam but a PC20 that can hit 50.
My thinking is that the CV carb doesnt open fully, even with a cut spring and the engine doesent breath as well.
The PC20 isnt perfect either, the pilot circuit doesnt get good signal and it doesnt carburate cleanly from low speeds. Thats why I want to try a Mikuni. Try a bigger carb, I think your big bore will wake up!
I think the flywheel isnt nessesary, it helps low speed throttle response and accelleration but doesnt affect top end.
|
|
|
|
Post by Thunderstruck on Aug 1, 2008 15:48:46 GMT -5
I have to agree. The pc20 really made my big bore wake up. It was a noticible difference. With that said, I am contemplating going back to stock or finding something else. The PC 20 is a piece of sh!t.
|
|
evilkaneval
Ruckster
Hi my name is Justin and I'm a Ruckaholic
Posts: 155
|
Post by evilkaneval on Aug 1, 2008 17:04:55 GMT -5
I think the PC20 really helps. [glow=red,2,300] One of my theories is that the CV stock carb doesnt open all the way on most people, perhaps even with a cut spring. Cutting the spring reduces preload but increses the spring rate because it is effetivly incresing the load on it so the intial force needed to open the slide is less but the force needed to open it fully is increased.[/glow] Could you perhaps explain this more ^ Are you saying that even when throttle is fully pulled, it could be possible that the stock carb in not reaching its full potential? Assuming that the cable is properly adjusted and the cam-wheel on the side of the carb is hitting the little stop flange. |
|
|
|
Post by dcampstro on Aug 1, 2008 19:58:08 GMT -5
After reading all the posts and (previously) wanting to make my ruckus faster... I'm a big guy, a touch over 200lbs - what are some relatively cheap (I'm still on a student budget) mods to help make riding a little bit more comfortable and a touch faster? I have some mechanical knowledge but most of what has been said in previous posts flew right over my head. I expect to spend around $500 bucks on mods - any help would be great!
|
|
evilkaneval
Ruckster
Hi my name is Justin and I'm a Ruckaholic
Posts: 155
|
Post by evilkaneval on Aug 1, 2008 23:23:33 GMT -5
:)Start with a polini variator. It is the best gift you can give to your ruck without spending so much that you make it a spoiled little brat.  Also get a few diffrerent sets of roller wieghts (e.g. 5.5g 6.5g 7.0g) Trough way to much trial and error I found out just how important it is to run the right size wieghts for your wieght/terrian/riding style). Deffinately best bang for buck and no hassle if you go to the how to section.  |
|
|
|
Post by smartbomb on Aug 1, 2008 23:32:39 GMT -5
I think the PC20 really helps. [glow=red,2,300] One of my theories is that the CV stock carb doesnt open all the way on most people, perhaps even with a cut spring. Cutting the spring reduces preload but increses the spring rate because it is effetivly incresing the load on it so the intial force needed to open the slide is less but the force needed to open it fully is increased.[/glow] Could you perhaps explain this more ^ Are you saying that even when throttle is fully pulled, it could be possible that the stock carb in not reaching its full potential? Assuming that the cable is properly adjusted and the cam-wheel on the side of the carb is hitting the little stop flange. The stock carb is a Constant Velocity carb that relies on port timed vacume signal from the engine to change the position of the top of the venturi dependent on load and rpm. Its sort of like having a variable size carb. This venturi works in conjuction and independently with the throttle plate which is controled by the throttle cable. These sorts of carb usualy work well from low rpm and are smooth. One of the things is that at WOT and high RPM there isnt that much signal and the venturi might not open all the way. I think thats why going to a cone filter without an extension tube hurts performance on this engine. Uusaly Ruckus guys cut the variable venturi spring to help the venturi open more quickly. Although this reduces the preload on the venturi which makes it open faster for snappier responce, shortening a spring also increases its spring rate which may keep the venturi from opening all the way. A PC20 has a throttle slide that is controled by the throttle cable. When its 100% open, its all the way open. Its also one of the reasons why a PC20 bog when you snap open the throttle real fast and the stock carb doesnt. You win some and lose some. For power and speed the PC20 really seems to work well. For low speed driveabilty the Stock carb rules. |
|
|
|
Post by smartbomb on Aug 1, 2008 23:37:50 GMT -5
:)Start with a polini variator. It is the best gift you can give to your ruck without spending so much that you make it a spoiled little brat. Also get a few diffrerent sets of roller wieghts (e.g. 5.5g 6.5g 7.0g) Trough way to much trial and error I found out just how important it is to run the right size wieghts for your wieght/terrian/riding style). Deffinately best bang for buck and no hassle if you go to the how to section. Then add a PC20, CDI and a good pipe. Pay attention to jetting and variator roller weights. Proceed to kick "edit profanity". |
|
evilkaneval
Ruckster
Hi my name is Justin and I'm a Ruckaholic
Posts: 155
|
Post by evilkaneval on Aug 2, 2008 0:06:19 GMT -5
I've been interested in popping in an H.O. Cam, but not fully aware of the downsides/ benifiets. And do I need to install any other parts(aside from hi-flo intake), or is it a stand alone mod.?
Chanito? Smartbomb?
|
|
|
|
Post by smartbomb on Aug 2, 2008 10:43:23 GMT -5
You get a rougher idle and more valvetrain noise. Supposedly the cam isnt really helpful until you put a bbk on your bike.
|
|
evilkaneval
Ruckster
Hi my name is Justin and I'm a Ruckaholic
Posts: 155
|
Post by evilkaneval on Aug 2, 2008 15:57:33 GMT -5
Okay that's what I figured. Well, i'm not interested in it anymore as I have no intention of ever doing the BBK.
|
|
|
|
Post by dcampstro on Aug 7, 2008 1:43:01 GMT -5
Thanks evil, and smartbomb, I really appreciate the input! ;D
looking foward to motoring soon!
|
|
|
|
Post by smartbomb on Aug 12, 2008 15:08:23 GMT -5
The moon and the stars lined up perfectly today. My bolt on Ruck was motoring along at 52 mph for quite a way on a flat. Must mean that it was a high air denstiy day to complement my very slightly too rich jetting. No wind either.
Let me qualify that hills and headwinds drop the top speed considerably. Variations in baro pressure change things a few mph as well. Some days my bike can't get past 48 mph on the same streach of road.
|
|
|
|
Post by ruckamuck on Aug 12, 2008 16:53:47 GMT -5
;D Hey guys, just wanted you to know today I hit 50, or so I think, the gauge was at the temp light! I live in illinois and was on a nice flat stretch. my ride is an 09 with 81 miles on it.. I took it easy for the break in period, did the chanito stock muffler mod and installed the bs airfilter... wind was calm and it was about 80 degrees outside with moderate to high humidity... I have never reached this speed before alway topping out at 40 on the gauge. today it just seemed to wake up and scoot today ! does anyone know what could contribute to this?? It hit this speed in less than a mile and a half...
|
|
|
|
Post by smartbomb on Aug 13, 2008 16:14:09 GMT -5
I found that this engine is really senstive to weather. On a bad day I struggle to hit 48 mph and on a good day I can hit 52.
It seems amazing that you can hit that sort of speed on a completly stock motor. Perhaps 09's might have some stuff we don't know about yet. Maybe you caught a tail wind?
|
|
|
|
Post by steve on Aug 13, 2008 18:06:28 GMT -5
hey man so i was wondering im a 260 lbs guy i was riding a freinds rukusthe other day nad obviously it wasn't going as fast as it would with a litter person riding it.
So i was curious if you had an ideas on performance parts that would even out the playing feild for consider im looking to buy one
|
|
|
|
Post by smartbomb on Aug 14, 2008 0:27:14 GMT -5
I think the Ruckus is safely rated to 220 lbs according to the owners manual so perhaps you have to consider something else or you might break it.
|
|
|
|
Post by Thunderstruck on Aug 19, 2008 10:11:15 GMT -5
|
|
