What Did You Do to Your RX3 Today? - Page 35

Jay In Milpitas · 03-04-2017, 03:40 PM

Quote:

Originally Posted by 2LZ

Replaced the restrictive block on the end of the baffle with stainless screen. This should help breathing and still pass the Rangers coat hanger test for a spark arrestor.

Without actually running the numbers I venture to guess that the holes in total give more than 300% area than the i.d. of the pipe, so not really restricted even with the plug.

ben2go · 03-05-2017, 12:01 PM

Quote:

Originally Posted by 2LZ

Replaced the restrictive block on the end of the baffle with stainless screen. This should help breathing and still pass the Rangers coat hanger test for a spark arrestor.

That's good for an extra 5hp/5mph.

2LZ · 03-05-2017, 12:40 PM

Quote:

Originally Posted by ben2go

That's good for an extra 5hp/5mph.

You dropped a zero!

ben2go · 03-05-2017, 12:41 PM

Quote:

Originally Posted by 2LZ

You dropped a zero!

2LZ · 03-05-2017, 12:48 PM

Quote:

Originally Posted by dpl096

Im anxious to see how you like the results.

I was actually able to get it out yesterday for about an hour. As Jay and ben2go state, if there's any difference, it's incremental. The bike did run good though and the biggest thing I notice with the different muffler is the power doesn't fall on its face under 5k rpms as badly as it did stock.

My goal is to open the breathing as much as possible more than anything. The true test will be to compare my RX3 with the new muffler and adjusted baffle against Mrs 2LZ bone stock RX3.
If I can only get it to warm up a bit and quit snowing. I think being locked indoors for weeks and weeks on end has fueled my need to tinker on projects like this, just to keep what little sanity I have left.

pyoungbl · 03-05-2017, 03:04 PM

2LZ, you mention opening up the intake tract...notice that Gerry at CSC opened up the intake ports on the head for their race bike. I can see where such a mod would help at high rpm, not sure it's all that important at lower revs. I wonder if CSC ran the bike on a dyno to get firm before and after numbers.

Peter Y.

ben2go · 03-05-2017, 06:58 PM

Quote:

Originally Posted by pyoungbl

2LZ, you mention opening up the intake tract...notice that Gerry at CSC opened up the intake ports on the head for their race bike. I can see where such a mod would help at high rpm, not sure it's all that important at lower revs. I wonder if CSC ran the bike on a dyno to get firm before and after numbers.

Peter Y.

You're correct. Free flowing ports will help with top end provided that the carb and airbox can flow enough air/fuel. How much power would it give the RX3, maybe a couple HP but not enough to notice without addition work.

Jay In Milpitas · 03-05-2017, 07:57 PM

More pulling power (grunt) at low rpm will require a cam grind suited for that, likely at a sacrifice of high rpm power.

A modest gain in low rpm output can be gained by advancing the stock cam a few degrees, if you're willing to do the modifications.

As Peter and Ben said, flow improvements either upstream or downstream don't impact lower speeds.

2LZ · 03-06-2017, 10:49 AM

These things are lame at lower R's anyway, oddly so really.

General breathing improvements will help across all rpm's....though as you state, really opening up the breathing like Gerry did to the race bike will improve higher R's. I all but ruined the low end grunt on my Husqvarna when I ported the crap out of it. It made it a rocket "on the pipe" when out on the track, but I ruined what little trail riding ability it had. Now that I'm older, I wish I wouldn't have gone so radical with it.

The biggest problem we have with "our version" of these bikes is that it doesn't really matter what we do, we're basically stuck with the injection mapping and predetermined timing curve. The sensors can adjust only so far. It would be neat to get a carb version and then start to play.

My attempt to help breathing isn't to make it a fire breather, it's just to help make what we have a little more efficient. It's all just in "good fun" really. I can't help but tinker. It's how I'm programmed. The upside is if it makes little to no difference, I'll just toss a stock pipe back on it and call it a day.

fjmartin · 03-06-2017, 02:05 PM

Heck, even if it doesn't improve anything, I'm sure it's lighter and lighter is always better!

Ron B · 03-10-2017, 06:51 PM

started getting it ready for its first camping trip. Bike has started acting up... hit a bump and it would die and dash would go blank. Finally traced it to the ignition switch. while it was running you could barley tap the key with your finger and the bike die and dash would go blank. turn the key off and back on start right up tap the key and it would die and go blank again. Called CSC and their shipping a new switch out today under warranty! got to love their exceptional quality service!

fjmartin · 03-10-2017, 09:35 PM

Did you try to spray and WD-40 in there to see if some dirt was causing an issue?

BlackBike · 03-10-2017, 11:54 PM

Ron, thanks for sharing that info!

dpl096 · 03-11-2017, 10:27 AM

Ron....
Thanx for another great CSC testimonial.

Ron B · 03-11-2017, 11:14 AM

Quote:

Originally Posted by fjmartin

Did you try to spray and WD-40 in there to see if some dirt was causing an issue?

yep, just a bad switch. Said they had 1 or 2 do that before. only thing is ill have a seperate key for the ignition now but thats no problem.

03-06-2017, 10:49 AM	#519
2LZ Join Date: Mar 2010 Location: Volcano, Ca Posts: 7,063	These things are lame at lower R's anyway, oddly so really. General breathing improvements will help across all rpm's....though as you state, really opening up the breathing like Gerry did to the race bike will improve higher R's. I all but ruined the low end grunt on my Husqvarna when I ported the crap out of it. It made it a rocket "on the pipe" when out on the track, but I ruined what little trail riding ability it had. Now that I'm older, I wish I wouldn't have gone so radical with it. The biggest problem we have with "our version" of these bikes is that it doesn't really matter what we do, we're basically stuck with the injection mapping and predetermined timing curve. The sensors can adjust only so far. It would be neat to get a carb version and then start to play. My attempt to help breathing isn't to make it a fire breather, it's just to help make what we have a little more efficient. It's all just in "good fun" really. I can't help but tinker. It's how I'm programmed. The upside is if it makes little to no difference, I'll just toss a stock pipe back on it and call it a day. __________________ "Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life." 2007 Suzuki DRZ400S (SM convert) 2009 Q Link XP 200 1967 BSA B25 250cc Starfire 2022 Royal Enfield Interceptor 650 2023 Royal Enfield Scram 411 1948 Royal Enfield Model G 350
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03-06-2017, 02:05 PM	#520
fjmartin Join Date: Sep 2016 Location: Redmond, WA. Posts: 534	Heck, even if it doesn't improve anything, I'm sure it's lighter and lighter is always better! __________________ 2017 BMW F800GS Adventure
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03-10-2017, 06:51 PM	#521
Ron B Join Date: Mar 2016 Location: Tuscaloosa Al. Posts: 433	started getting it ready for its first camping trip. Bike has started acting up... hit a bump and it would die and dash would go blank. Finally traced it to the ignition switch. while it was running you could barley tap the key with your finger and the bike die and dash would go blank. turn the key off and back on start right up tap the key and it would die and go blank again. Called CSC and their shipping a new switch out today under warranty! got to love their exceptional quality service! __________________ Wingless Hawk, 2016 orange RX3, 97 wide glide,2003 KLR
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03-10-2017, 09:35 PM	#522
fjmartin Join Date: Sep 2016 Location: Redmond, WA. Posts: 534	Did you try to spray and WD-40 in there to see if some dirt was causing an issue? __________________ 2017 BMW F800GS Adventure
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03-10-2017, 11:54 PM	#523
BlackBike Join Date: Feb 2016 Location: George West, Texas Posts: 4,097	Ron, thanks for sharing that info! __________________ ***************************************** 2015 Bashan"Blaze" BS250GY-31 (DB-07K-250) GONE 2017 Suzuki V Strom 650 XT "We are all born ignorant, but one must work hard to remain stupid." ~Benjamin Franklin~
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03-05-2017, 03:04 PM	#516
pyoungbl Join Date: Feb 2016 Location: Portsmouth, Virginia, USA Posts: 632	2LZ, you mention opening up the intake tract...notice that Gerry at CSC opened up the intake ports on the head for their race bike. I can see where such a mod would help at high rpm, not sure it's all that important at lower revs. I wonder if CSC ran the bike on a dyno to get firm before and after numbers. Peter Y.
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03-05-2017, 07:57 PM	#518
Jay In Milpitas Join Date: Jul 2015 Location: Milpitas, CA. USA Posts: 775	More pulling power (grunt) at low rpm will require a cam grind suited for that, likely at a sacrifice of high rpm power. A modest gain in low rpm output can be gained by advancing the stock cam a few degrees, if you're willing to do the modifications. As Peter and Ben said, flow improvements either upstream or downstream don't impact lower speeds.
	1

03-11-2017, 10:27 AM	#524
dpl096 Join Date: Sep 2015 Location: East Central Hellinois Posts: 1,344	Ron.... Thanx for another great CSC testimonial. __________________ ************************************************ * " Time you enjoy wasting, is not wasted." - John Lennon “I predict future happiness for Americans, if they can prevent the government from wasting the labors of the people under the pretense of taking care of them.” ― Thomas Jefferson "If you don't know where you're going any road will take you there" ....George Harrison song
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