| Author | Message | ||
     Easyrider |
I'am now finishing the complete fuel map, and take the baby for a ride. Tell you later in the evening what the feeling on the road is going to be..  | ||
| Rfischer |
Easy, If you enlarge the ports, especially the intake side, there is a very good chance you will reduce torque. Peak flow-bench numbers can be misleading. What you should take a look at is increasing charge-air velocity. Bear in mind that 80% of cylinder fill occurs at <50% of valve lift. Some very good results have been obtained by shrinking and shaping ports, combined with larger valves and relatively mild camming. Improved velocity and high cylinder pressure [not to be confused with high compression ratios] = excellent and broad torque. Been proven on V-twins and I4's alike by certain tuners. Never forget Carroll Shelby's famous dictum: "Horsepower sells [cars]; torque wins races." The current proof lives in the Audi diesel P1 Championship cars. | ||
| Bud |
 the ports are already prity big. | ||
| Easyrider |
Short story about my first impressions with the bike... The sound is awesome, like a ducati. It's not too loud, we did a db test (off course) like they do on the circuit and it produced at 4000 RPM between 96 and 105 db. and this is the open version with no db-killer inside. We closed some holes when testing in the last chamber, whitout losing power. And the the exhaust is perfect for circuit racing here in Europe. If you drive the bike there is a constant dark tone. Not too loud but exactly to feel and hear what the engine is doing. The wetter is here like 12 celsius dry surface. I wheely the bike with no problem driving 90 km/ph in 3th gear. When I take a road to a industrial area and wheely in 1st gear, it pulled the complete rear wheel aside. The bike has a perfect control in power. I first tried how hard it came in but the throttle response is perfect, there is a broad band of strong power in the complete RPM range. The bike feels like a winner and so strong, and pulls hard with no surprises. Man it was a joy spent 2 gasolines tank today. having fun by myself. So now we are going to work on the design of the exhaust. Thanks for all the input so far. and drive naked (-; (Message edited by easyrider on November 07, 2008) | ||
| Slypiranna |
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| Redscuell |
To borrow a line from Carbonbigfoot, "is it ready yet?"  | ||
| Thurstonbuell |
 Can someone make something that looks along these lines ? ( excuse the lack of photoshop skills ) | ||
| Carbonbigfoot |
Easy there, Red... Don't want to get no_rice all charged up again... <grin>  Rob | ||
| No_rice |
what fun is that... | ||
| Easyrider |
Guys, This is a forum, for me it works like a reminder.. don't worry I understand the LOL.. | ||
| Badlionsfan |
As far as design goes, I wonder if you could make it some type of 1 piece muffler/ belly pan combo? Kill two birds with one stone. Also, partner up with a parts supplier over here in the states such as American Sport Bike or something to distribute them here in the US. Will make it much easier to get them on the street if a guy can order it from some where that has them on the shelf an can get it in a few days vs weeks. (Message edited by badlionsfan on November 08, 2008) | ||
| Fresnobuell |
Also, partner up with a parts supplier over here in the states such as American Sport Bike or something to distribute them here in the US. Will make it much easier to get them on the street if a guy can order it from some where that has them on the shelf an can get it in a few days vs weeks. Great idea. Imagine the savings on shipping from overseas too. | ||
| Redscuell |
"make it some type of 1 piece muffler/ belly pan combo? Kill two birds with one stone. " Um, the stocker IS a muffler/belly pan combo. Didn't anyone notice? Right down to the near-zero clearance between the muffler's rear and the tyre itself. | ||
| Markrd500 |
Easier to spray a bellypan than get the rust of the front of the far more expensive exhaust though. Well done Thurston, thats the design I've been waiting for. Seems straight forward and obvious to me. | ||
| Badlionsfan |
Um, the stocker IS a muffler/belly pan combo. Didn't anyone notice? Right down to the near-zero clearance between the muffler's rear and the tyre itself. I mean a functional belly pan. | ||
| Redscuell |
"I mean a functional belly pan." Ahhh, you mean one that is an oil-catcher, as required by some racing rules. Sorry, I was thinking only of aerodynamics, as I am a street rider only.  | ||
| Easyrider |
WTF... Oke, I mounted my original ECM this morning, witch has NOT 1 reflash at all. so bone stock. And took the Bike to the dyno. I made a WOT run, and couldn’t believe my eyes?. SO I mad a few others with different engine temps and I still cannot believe what i am seeing.. The only thing which I removed was the lamda and I am using a K&N filter... The bike is running lean at around 3000 RMP but above 4000 RPM, it runs great (off course on the dyno) This graph is with the same ECM, same bike NO lamda, with the Buell stock Exhaust and our own developed TM exhaust.   (Message edited by easyrider on November 10, 2008) | ||
| Xb9 |
So that ecm has the calibration with the 'skewed' spark maps? Easy, if you want to do any remapping on that stock ECM PM me. I've been working late on the computer lately. | ||
| Easyrider |
pm zend | ||
| Redbuelljunkie |
Wow! | ||
| Slypiranna |
That is simply incredible! | ||
| Xnr |
Some of that improvement may be the colder ambient air. This engine has a noticeable gain on cold days. ... not to detract from your exhaust work. I think many are awaiting your finished product. I have yet to catch a 3rd gear wheel without a bump in the road to flip it up. | ||
| Easyrider |
Xnr, There is like 2-3 HP and 1-2 NM difference between the runs in different engine temps, I was amased as well. so this week I start with te new prototype of the exhaust. I really hope to get this exhaust quickly off the groud and ship the first ones for testing and hear what happens in your Country.. | ||
| Bigblock |
Wjhat do you mean by "no lamda", Disconnected O2 sensors? | ||
| Jmr1283 |
yay!!! | ||
| Xb9 |
no lambda = no O2 sensor feedback. Only way to go if you're altering the fuel maps in the CL/CLL region on a stock ECM. No lambda will force open loop 100% of the time (no closed loop). | ||
| Slypiranna |
yea, no o2's...but I think Easyrider might be on to something here... Get the latest flash loaded and use your magic for a 200 mile LEARN on AFV's... then dyno her. Your on a roll brother! Excellent work and sharing! We support you! I just we lived around the block instead of over the pond! Too cool!  | ||
| Easyrider |
Sly, I sometimes dream about living in the USA, with a Nice dyno room and help you guys out...  | ||
| Easyrider |
So, just got home, after bringing the bike to the production site for making te prototype, hopefully end of the week begin next week the first foto of the prototype is ready, and then testing again to see if we lost power or not... I have good fait in these guys.. | ||
| Xb9 |
Easy, you have mail |
