| Author | Message | ||
     Dannybuell |
How low an RPM to cruise in economy more do you go with your stock setup and how has that changed with the EBR ECM? I only have 100 miles on the CR and every time I get below 3000 rpm it starts lugging and chugging. maybe my S1 spoiled me, it could cruise at 2200 rpm on a flat surface and never complain. dannybuell | ||
| Illbuell |
My CR won't cruise at 2200 with out lugging. Stock or with the ECM.Anything under 3 isn't perfect smooth.. But it is a big hot rod twin.. What do we expect.. I can live with it for the power it makes. | ||
| Justa4banger |
yea i believe any tune will still suck when lugging the enigne at 2200 rpm.. | ||
| Fresnobuell |
use clutch or ride bike like it is intended | ||
| Ponti1 |
The 1125 is happiest above 4K without question, but can cruise comfortable down to around the 3K mark. Look at the difference in the powerplant's rev range, and where it is designed to operate. Your S1 has a redline of what, 7K at most? At that limit, cruising at 2200 RPM would be about 32% of the bike's 0-7K range. Using the same logic, you could expect similar comfort in cruising from the 1125 at 3300-3400 RPM. NOTE: I just made this up, off the top of my head, for sheer entertainment purposes. Please understand that I do not mean for this logic to represent any actual standard in calculating anything at all. If, in fact, there is any overlap of fact/fiction in this text, it is purely coincidental and does not directly correspond to the author's level of knowledge. | ||
| Chiefiron |
I love the disclaimer Ponti1 LMAO. Tim | ||
| Jdugger |
BTW, with the EBR map you can expect fuel economy to GO DOWN, perhaps significantly. | ||
| Mountainstorm |
Ride your bike at a higher RPM and be happy. Why do riders want to lug a race-engine? This ain't your Pappy's Buell bowah. | ||
| Dannybuell |
As a 16 year old my first car was five years old, a 65 olds 442 4sp w 4.11's, from there it was a 69 Z28 ($2200 two years old). Same story here big torque monster and rev happy w/ no low end. Just wanted to be sure. THX dannybuell | ||
| Syonyk |
With the recent ECU flashes, it should run smoothly down to 2200-2500 RPM - if it starts bucking, shaking, clunking, and generally sounding like it's about to tear the driveline apart as soon as you get below 3000 RPM, that's most likely from an older ECU flash that could get updated. I'm at altitude (~5000' pressure altitude), so I typically run 3000-4000 RPM around town - I could cruise slower, but it's not particularly happy with it and there's no power at all if I need to scoot. | ||
| Mountainstorm |
Different engines like different speeds. I can putt putt putt up hill at 1800 RPM with the X-1 and roll on at 2200 RPM. I think the Helicon would implode if I tried that. | ||
| T_man |
I don't have the EBR Ecm yet, but I have tweaked (boosted the AFV 10%-20%) my original (Dec 07) flash Ecm; which is said to have the identical timing map to the early race ecm's. I also run the HPE race slip-on and I can say after I installed the exhaust my R will happily pull at any throttle setting from idle upwards. I find myself cruising out of neighbourhoods or around town at 2500rpm to keep the noise down with no drivability problems whatsoever. Nonetheless I still want an EBR Ecm just to see what the differences are (hopefully more power!) PS.An interesting note is (for anyone who runs with the inner airbox cover OFF); it DID chug, stumble or jerk when I tried this with the inner airbox cover removed - I've since left it in place permanently. | ||
| Fresnobuell |
I've since left it in place permanently. Me too. I think there had to have been some R&D to the airbox and just yanking it off may very well be detrimental. | ||
| Justa4banger |
Umm yea besides the ram air effect, removing the box cover alllows more air in and then the engine runs lean... this makes drivability go to shit fast.... thats why K&N filters cause such a change in the bike for a/f ratio.. | ||
| T_man |
4banger - Your 100% correct - but even when I boosted the AFV's to compensate for the 'open' airbox lean condition it wouldn't pull as cleanly as with the airbox cover on. To tie this back into relevancy with the EBR ecm - I believe that the drivability down low is increased with the 'race' map due mostly to it correcting for the overly lean condition the bike was delivered with via the stock ecm. | ||
| Justa4banger |
I'm not familiar with the tuning stuff your using but generally a GLOBALLY adjusted fuel enrichment won;t do the trick.. Speed density is easy to tune, but every little change requires it to be retuned... For me i like a litte more sound but somewhere on here i read that one guy did some speed runs with/without the cover... i think with it he was in the 160's and without in the upper 140's... that tells me the ram air effect must be working...or that guy is a hell of a bullshitter LOL | ||
| T_man |
LMAO! That guy was me! Hahahaha! I made an error in the conversion from Kilometers per hour to miles an hour which I adressed in a later post. The difference was: 238km per hour = approx 148mph: inner off 263km per hour = approx 163mph: inner on Honestly it 'felt' faster with the honking noise with the inner off - but I couldn't argue with the objective results. This season I'll be doing drag runs with it on and off to ascertain the difference in acceleration. Anyways - I hope this clears some of that up. PS. I didn't do a global fuel enrichment - I adjusted 20% more rich 2k to 4k and 10% everywhere else with the Buell race timing map. Kinda tried to create my homebrew version of a 'race' ECM. | ||
| Fresnobuell |
Noise=sense of speed. The screaming IL4s "seem" way faster than the Twins farting around the same track, but the speeds very similiar. | ||
| Easyrider |
Dannybuell, It is a fuel problem on low RPM. Only after programming it will be smooth.. |
