| Author | Message | ||
     Blackflash |
Off to the dynojet .First clean the ice off the trailer.  | ||
| Blackflash |
I will see what the dyno holds for this quick mockup 3 baffle style system.I will see if the OE downpipe/ and my custom muffler is even worthy and try to get equal or increases in numbers.Who knows she might fail.I just really want to try this stock downpipe for some reason.I have a same cone engineering collector as adams and tube but why not try the stock downpipe first.This stuff is fun and I enjoy it.I plan two baselines.Then the o s b tune and get my stock pipe dialed in .Then the pipe three stock baslelines.Then I will diasble the 02s and run 5% Then 7% then 9% more fuel with the new pipe and see if theres more grunt in the r with this pipe.Its not a tune im building.Just getting some afr data.I cant wait.Ill get some video if I can .Ill post tonight.   | ||
| Justa4banger |
What no numbers yet? Next post better be vids and dyno numbers  | ||
| Blackflash |
best stock run 121hp 68lbs of torque.  | ||
| Blackflash |
Next stock tune with the modified pipe 121hp 72lbs of torque.It didnt go lean it went 12.8 at 7 k and was above 13.1 the rest of the way not bad for no tuning.There was a lean spot right on the dump of the throttle at 4k.And I dont know why he stopped at 9700rpm either.I believe it would of added 1 or 2 more hp at 10k.I still had 300 rpm or so to pick some up??  | ||
| Blackflash |
Next for fun I used the O S B pfu which is made for the stock pipe and not a open pipe.But I used it anyways for laughs to see if any good would come of it.It had bad and good .The hp 125hp went up and the max tq 70lbs went down but the torque looked better in the in between area.Like I said this tune isn't made for this but what the hell??  | ||
| Justa4banger |
Thats pretty good. SO add some sound and make about the same power.. maybe a smidge more.. I wonder if adding a k&n Filter would've helped.....? VIDS? sound clips? Anything? | ||
| Blackflash |
I ran a k&n.But look at my runs he cut me short of rpm on all my muffler runs??What the hell?Maybe there could of been higher numbers?maybe 1 or 2 hp ? Oh well I achieved good tone and didnt loose or gain much just moved some numbers around maybe more torque?as far as the stock downpipe.It didnt hurt or help.My numbers are really low but my baseline is low too.I have one video to prove I was on the dyno But I ended up helping to much and didnt have time to video tape with the pipe on.I was more into getting things right .Even though he cut my rpm short.It was chaos.His afr machine was screwing up and we had to rebuild it and put a new 02 sensor in it. The vaccum pump had a ripped diaphram so we took it apart and put He rubbers in it.Ya it was chaos. | ||
| Blackflash |
http://www.youtube.com/watch?v=EaGAShYsHlU | ||
| Blackflash |
The more I look at my papers it looks like I gained more torque.I think I will go back to the shop tommorrow and have him put these three in on a single paper to compare.Hey I see it like this I only have a little over 200.00 into this pipe right now.And 100.00 in the dyno. | ||
| Justa4banger |
SOunds good to me... now you just need to make it pretty lol | ||
| Thefleshrocket |
Interesting stuff. Even if you didn't gain any peak power, at least you didn't lose any power. (Funny, with most bikes, people claim that they gain horsepower with aftermarket or custom exhausts--with the 1125R, the goal seems to be making better sound and not losing any power.) Perhaps he did run the bike up to redline on the bike's tach, but maybe the stock tach is inaccurate--IE at 10,500rpm indicated, the motor is only turning 9,700rpm or whatever, Once you have it looking pretty, do you plan on making them to sell them? I ask because I'm half considering just buying one of the cheapy slipons (HMF, FMF, Jardine) because my budget just doesn't have the room to buy any of the even moderately priced exhausts. ($600 is probably my absolute ceiling, and my wife would probably be a lot less likely to roast my nuts if I spent $400-$500.) | ||
| Blazin_buell |
Ok so why did he tuck behind the screen? My son used to do that while making the same noise on his bicycle. Backflash , great effort and I'm enjoying all the exhaust constructions from the humble builders out there. Keep it up. | ||
| Geforce |
Blackflash...looks like you did a good job on this one. Keep it up! And remember... if it doesn't make mega power, it's cool. So long as you are happy with the sounds and looks. It's all good. Dean has already been calling me about his new operation as well. You two would make a pretty good team I think. | ||
| Dentguy |
Ok so why did he tuck behind the screen? Wondering that also. It made me laugh out loud. Maybe just a habit. | ||
| Blackflash |
I will now construct a downpipe similar to adams style. As I have the same parts .I'm talking to the dyno operator tomorrow and ask why he cut the datalogging short. Maybe get a graph with those three runs. I'll clean this stock downpipe up for now .I am considering selling the style as it's proven worthy. I need more dyno info before I do anything . Maybe banger can help me out with that. More riding time is also needed. I really like that it didn't go lean like jardines do or any open style. In my eyes that's gold. I believe it has close to stock flow properties just more noise. Now off to a cleaner version. And then a jig can be made.My price won't hit thefleshrockets ceiling even with shipping included. Like I've stated these will be mass produced which will keep costs lower.I will not construct the muffler parts. That will be supplied to me with downpipe parts.But for now I'm off to make a downpipe that is a 2 into one . I will play with a x pipe that I've made in the garage . Only thing is they take lots of time to construct. Time equals money. I'll also weigh the muffler tomorrow with the stock downtube to get a weight as is .I don't believe a exhaust should cost more than 600$ shipped any where in the US. Remember if you have a wholesale account the supply prices drop 20 -30% so like I've said mass produced saves money and quality welds would be made by a everyday welder. That's the only way I'd roll.I have a mig with gas and was tempted to get a tig recently. But as I've stated a everyday welder should be welding these parts and the welds should look like little dimes. Consistancy / cost won't be a issue. A good vendor should drop prices after 2 k is spent. I'm almost there with all the tubes I've been buying to make my Exhaust turnouts. | ||
| Blackflash |
 | ||
| Blackflash |
 | ||
| Blackflash |
Tucking on the windscreen was so you could see that rpm gauge.It bounces so much that you have to really look at it. | ||
| Tbenson |
More than likely one of these will be fitted on one of the White 09R's soon! | ||
| Blackflash |
Troy there's some warm weather coming this way  | ||
| Blackflash |
http://www.youtube.com/watch?v=G7IsyLt19Vo | ||
| Blackflash |
13.1 is optimal wot afr with this bike I was told.Looks pretty good on the second run stock tune with the pipe | ||
| Justa4banger |
I definitely like the fact your a/f ratio is safer than D Adams setup, but i will admit the use of a K&N on his bike probably has alot to do with it... | ||
| Blackflash |
I went a little rich at 7 k 12.8 Optimal is 13.1 . I thought about pulling my air lid cover off and trying a pull. Hell I could of spent two days there. Adams setup definately has good looks with the downpipe. I give him two thumbs up.I wanted to keep the muffler tucked. That was one major goal. As far as afr he did look too lean across the board.. That means there's too much flow.At least some of us that have dyno experience and tuning skills know of this . 13.1 naturally aspirated. Nitrous 11.5 to12.1 supercharged I run 10.9 to 11.5 . I'll try to get those runs put on a single sheet. Then onto constructing a downpipe. I believe the muffler has good flow properties. So that's done. | ||
| Justa4banger |
12.8 isn't rich and it doesn't last long... one thing that does need to be check is a/f at cruise..... I think i'm going to get a WBo2 setup for my R. i found a couple good deals. The setups have displays and can datalog.. this will help when i get to the tuning aspect of this bike... i was looking into a dual channel a/f ratio setup, but with possible layoff in the near future, i might need that money for eating. (like 500-600 bones for a dual channel setup) I'm still going to buy a pipe regardless, i just need to se a prettier product  | ||
| Blackflash |
Well since these bikes vary one to the other on fitment as we have found out in this forum. I have a design up my sleeve to eliminate that.Im just waiting on coneengineering .Last week they sent me 1.75 tube ss when they were suppose to send me 1.875 16 guage. I went with 16 guage so I can open up the ID in a lathe instead of grinding the tubes as others have done.This will make a tight seal on the downtubes.I just have to wait a day or two.I thought of trying a merge at the two primaries.I like how the buell system has the merge right before the muffler.If I weld the merge right before the muffler and make a spring slipon style like the jardines at the merge to hold the tubes on this will make the fitment more adjustable. And the primary downpipes will be longer.I was told by a good tuner on here that my afr looked really safe with the stock tune.and my torque gains were very good .Horsepower stayed close to same.Very healthy.Which is all I care about.It showed some gains with the pfu but its the stock pfu.So from the tuning aspect it looks to be a good foundation to work with.  | ||
| D_adams |
Ok, I'm trying to get this sorted out, since I'm not a "tuning expert" like yourself. Your pipe design ran at 12.8:1 A/F ratio and is considered "spot on" for max power, theoretically, right? Your max hp was 121, and then throwing the tune in you saw 5 hp increase tops, right? On average, with the stock pipe, O-S-B tuning gains anywhere from 10-20 hp and 10 ft/lbs of torque. Correct? Now, lets look at the one I built. Stock pipe runs at 14:1 for me. It's considered "lean" by all, so to fix it, tuning is in order. Gains for a stock pipe are posted above. Taking this a step further, the pipe I designed and built runs exactly like the stock pipe when you look at the A/F ratio and power output, ie; torque and hp results. So, does it stand to reason that I could theoretically expect to gain the same hp/torque readings that a stock pipe would? Don't take this as an insult to your work, I'm just asking an honest question here. I haven't done any tuning on mine yet, so I really don't know where it's going to end up, but based on the numbers (A/F ratio and torque/hp output) would you expect more gains from your pipe or the stock one and then compared to mine? Which one has the most potential? All the tuning I've ever done was "old school" with carburetors. I've never played with an EFI system yet, but I assume it's the same, only easier since it's done on a computer to change values instead of pulling off a carb. As I see it, and the way it's been explained to me is, the stock pipe needs more fuel and spark timing. | ||
| Justa4banger |
D Adams, here what i gather from what i see on the dyno Charts.. First off your bike, regardless of pipe, needs a touch more fuel.... probably from the K&N filter. your pipe made a bit more peak hp but lost a smidge of trq, where Blackflash didn't make as much peak hp, but gained a bit more trq. this right here shows how different designs working different on the same engine.. With a O.. S.. B.. tune, Dadams, your pipe would probably make more peak hp.. and i would venture to say with a tune 10-20hp increase is attainable..... My only point for mentioning the a/f ratio is in the configuration you are showing, the bike is a touch to lean... swap back in the stock air filter and things may richen up a bit and help you out. it might make more power with your pipe. Now if BLackflash had added a K&N filter, theres no guarentees that his setup wouldn't also lean out. heck it could run EVEN leaner..which would be bad... Only way to know this is to re-dyno your bike without the filter, or dyno blackflashes with a K&N.... as for the O..S..B..tune not gaining much, i imagine since its designed to only mildly improve a stock setup, the changes were more for drivability than peak numbers... (Message edited by justa4banger on January 20, 2010) | ||
| D_adams |
Mmmm, see his post about 10 up or so.
|
