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Post by timberwolfmadcat on Sept 8, 2006 8:17:57 GMT -5
Another sweet write up! Good job man, if you want my pics just go to my thread and right click properties and copy the link  Thanks! I didnt worry too much about how the hoses go back on, b/c well its nearly impossible to attach them to the wrong spot.... |
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Post by timberwolfmadcat on Sept 20, 2006 11:57:25 GMT -5
someone should sticky this.........  |
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Post by Dandy Dan on Sept 20, 2006 12:51:49 GMT -5
Okay! I deleted the crap posts at the start and stickied it.
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Post by timberwolfmadcat on Sept 20, 2006 21:39:43 GMT -5
Okay! I deleted the crap posts at the start and stickied it. thankers |
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Post by Ron Rucks on Mar 3, 2007 18:42:37 GMT -5
this is a great read...................so my questions are ...........what is shimming the needle? Do ;you need many different needles sizes to get things running tight?
Do certain mods require certain needles.........................Increasing the jet? does that mean to remove the current needle and install a new one? or not fully screwing in the current needle. These questions may sound stupid...................but i have no clue about these things.but i am willing to learn..................................when you remove old jets .................the new jets get screwed in fairly tight or what?............................When people say its time consuming..................it's all the junk you need to get through to get to the needles right??
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Post by chanito on Mar 3, 2007 21:31:00 GMT -5
this is a great read...................so my questions are ...........what is shimming the needle? Shimming the needle is just putting a small flat washer (from here on known as the shim) so the needle rises and make the mixture richer Do ;you need many different needles sizes to get things running tight? I wish we had lots of needles to do some fine tunning, but we only have two options pre '06 and after '06. The later model seem to give a better mid range power (perform better at part throttle) Do certain mods require certain needles.........................Increasing the jet? does that mean to remove the current needle and install a new one? or not fully screwing in the current needle. Some mods like exhaust or intake, change the fuel requirement of the engine, so you need to provide more fuel, this is done by using a bigger jet (jets are just screws with a metered hole that allows gas thru, the bigger the hole, more fuel will go thru), you actually do not screw the needle, it uses a cam lock system (like the radiator cap on your car) and the last thing you want is for the needle to come loose, so increasing the jet, just mean to swap the current one for another with a bigger hole When people say its time consuming..................it's all the junk you need to get through to get to the needles right?? No, is time consuming, because it requires you to take the carb apart and test the jet, and keep swapping jet until you are satisfied with the performance of your Ruckus  which might involve swapping jets more than twice |
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Post by Ron Rucks on Mar 4, 2007 10:12:05 GMT -5
thanks chanito
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Post by timberwolfmadcat on Mar 4, 2007 16:07:19 GMT -5
More importantly : Where can i find shims?
You can find shims at a local hobby shop. Look for RC car parts, and i believe they are small axel washers/shims. Either that or Radioshack apparently in the US has them.
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Post by Dandy Dan on Mar 5, 2007 11:57:18 GMT -5
I'm a believer in that you don't need to shim the needle to dial in your carb...with the idle mix adjustment plus the wide range of slow and main jets available you can get it pretty darn close without doing this mod. Shimming the needle is a pain because you need to find the shims (or make them out of beer caps) and then the plastic needle holder always strips and really needs to be cut down to fit more shims in and even then you really are just taking a shot in the dark.
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Post by Dandy Dan on Mar 12, 2007 11:34:40 GMT -5
I just read this right up over again and wow it's good. You've got a picture showing absolutely everything. I wish I was learning all over again so I could print this off and enjoy using it.
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Post by chanito on Mar 13, 2007 21:34:35 GMT -5
I'm a believer in that you don't need to shim the needle to dial in your carb...with the idle mix adjustment plus the wide range of slow and main jets available you can get it pretty darn close without doing this mod. Shimming the needle is a pain because you need to find the shims (or make them out of beer caps) and then the plastic needle holder always strips and really needs to be cut down to fit more shims in and even then you really are just taking a shot in the dark. I disagree, the slow jet only takes care of idle and up to about1/4 of the throttle opening, the main jet for the last 1/8 of the throttle, most of the carburation operation is take care by the needle, that is adjusted 3 way 1.- Is shimming, which is how high the needle is on the discharge jet 2.-Is the spring, as it control the speed of the rise of the needle, and more important the closing onsudden throttle release 3.-The vacuum feed hole on the bottom of the diagphram, which control the behavior of the needle at part throttle I am still afraid to play with these as a diagphram is expensive so mesing one up can be costly, so far cutting the spring seems like the easiest of the three, and cutting 3 coils is too much, i have to get a new one and cut only 2 and try again  |
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Post by Dandy Dan on Mar 14, 2007 10:14:00 GMT -5
Cutting the spring is a whole lot easier than shimming the needle so if I do get into this sort of mods then I'd start with that.
Our carb needle just controls how much of the main jet is plugged, so at say 1/2 throttle, if you needed more gas you could raise the needle (via shimming) to plug less of it or you could use a larger main jet which would let more gas leak around the needle or you could use a larger slow jet since the slow jet is always open. I realize that the needle adjustment is probably the right way to do it but I know I've been able to dial in my mid-range but just messing with the main jet so it seems possible.
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Post by chupacabra on Jun 2, 2007 17:29:28 GMT -5
Thank you sooo much for making this how-to. I had completely given up on considering an exhaust or intake because I knew I would have to jet the carb but now I think I'm gonna go for it!! Thanks a lot Timber!!
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Post by chupacabra on Jun 2, 2007 18:56:25 GMT -5
Are the jet sizes that you reported for the 06 ruck? Does it make a difference?
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Post by timberwolfmadcat on Jun 2, 2007 19:12:19 GMT -5
Are the jet sizes that you reported for the 06 ruck? Does it make a difference? '05 and '06 are the same sizes with the exception being the needle jet |
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Post by Workstead on Jul 21, 2007 19:19:44 GMT -5
Timberwolfmadcat, You are the man! Because of your write-up I was able to clean the carb on my 2006 Ruckus. Your pictures of how to get to the bottom of the carb gave me the courage to attempt the fix. It turns out that inlet to the carb was plugged with junk and very little gas was getting to the bowl. Now it's working properly. Thanks you very much for your excellent technical writing skills and a year after you wrote it, it's still good information. Dandy Dan gave me the link to this posting. Thanks, Dan. Clem Lets get started shall we So, you did it this time...... you modified your ruckus so far now it runs like crap whenever you give it gas...... .... regretful....... no probably not, as most ruck owners you love the sound over the performance. My advice, if you have done the exhaust, and you want to get it absolutely dialed in, do the intake as well. The $20 for the airfilter will more than equal its cost for performance.... since you'll be wasting at least 5-6 hours of your life getting it jetted right if this is your first go. ... |
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Post by Dandy Dan on Jul 24, 2007 9:03:19 GMT -5
Nice to see that you got the problem solved Congrats! |
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Post by black07offroadruck on Nov 23, 2007 2:32:48 GMT -5
thanks guys im new im 15 i wanted to get around reno so i bought one its great exept i was trail riding and hit a huge rock crushed the exhaust so i got to get a new one i wanted to anyway i got a buddy who works at rms he told me i had to rejet it this helps alot
p.s. does any one have a dr.d (dubach racing) pipe for theirs thats wat i got
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Post by Dandy Dan on Dec 6, 2007 12:42:18 GMT -5
Yeah a few people have Dr. D exhausts...I've seen em around. With your new pipe rejetting will likely help a bit but it's tough to say what to do without seeing your bike. I would do a few plug chops to check how it's running and act accordingly. I would guess you'll only have to change the main jet up or down one size....ie. go from a 75 to either a 72 or 78.
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Post by varroa on Jan 4, 2008 3:29:12 GMT -5
where do you all people get odd numbered jets? as in, 72, 78, 82, 88? all the kits that bowls and bss carry only have numbers that end with 0 or 5? |
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