Hi, Just seen this which is brand new and not as pricey as Akra's... Honda CBR1000 RR (0 Beowulf Silencer & Link | eBay Just wondering if anyone has any experience with these exhausts?? Any comments?? Does not look like the link pipe is S shaped, not sure though... Is an exhaust system better having an S shaped link pipe?? Is that just so that it would createa bit of back pressure so less need for a Power Commander?? Thanks for any comments...
Beowulf = cheap and British made, that's all I know! Re. your S pipe, back pressure and PC comments... My advice is to do some research, as you're misunderstanding some fundamental some stuff here, however, in general for this bike, the slip ons with S pipe perform better because they are closer to the optimum length (full systems are different because the headers, mid & can are all designed to work together). PC is not required, but could benefit your fuel mapping (and therefore toqrue & power curves) in any circumstances.
I'm clueless on this, but asked the same to the racefit boys at the nec, they said the s pipe is nothing to do with back pressure, as 4stroke engines don't operate like 2 strokes, and that the s bend was merely there to give the system more length to help the removal of gasses (or whatever the correct term is) and essentially even the s type is still a straight through system... They Said that their growler didnt need the s as it By it's design had the required length... He was so confident that fueling and performance would be perfect without the pc that he would take it back off the bike with full refund If I wasn't happy. Maybe not relevant to the BeoWolf as it looks stubby without the s bend, but might help?
so whats your point with that mate? from a brief scan (i got bored - its pretty nerdy) it seems there isnt back pressure on the 4 stroke so thats not what the S bend is for?
Exhaust tech is far more than just a length of pipe, its about retaining some part burnt gassed and new air and fuel to give a good overall air fuel ratio. An engine can be re-tuned to cope with just about any type of system but power curves are effected by the system design, in other words a drag style open manifold gives good top end power but nothing else (in rough terms). Also factors like shock waves (power pulses) from the "bang" in your engines cylinder also need to be taken into account as they can rebound into the cylinder causing chaos with combustion gasses if an untuned length is used! What you pay for in a quality system is development and dyno time, for example Akra may make systems that only produce small gains but the curve etc will have been studied and peak power will be an improvements even if only very small, also the materials used can give gains in weight even if no increase in power is shown! "Other" exhaust companies produces systems that look good and thats about it some loose power have crap curves and the build and materials are all at the cost of looks! I think back pressure is a term that relates more to a 2 stroke engine than that of a 4, as I say physics of exhaust technology is long and complex but for me I would rather buy into tried and tested technology that gives improvements in power and weight and perhaps does not look as clean and some untested "pretty" exhaust systems
Thanks for the replies so far. I definitely want the Akra slip on and link pipe, but was just wondering how much of a pariah I would be for even considering the Beowolf... So I am sat in the naughty corner now, facing the wall... (repeating, AKRA AKRA AKRA!!! whilst rocking slowly back and forth...) hehehe Agree with the summary position, stated clearly by Arthur... "for me I would rather buy into tried and tested technology that gives improvements in power and weight and perhaps does not look as clean and some untested "pretty" exhaust systems "
My fathers old RR9 was the bike Andy from beowolf used to develop there cans, and not only are they better quality than most other makes out there, they DO match the 'big guns on power, only the akra made more on the dyno then the Beowolf (0.9bhp more), on the same bike, same dyno, same day, the good thing about Beowolf is they have an in house dyno and will have tried 4-5 different variations of each can before it makes it to full production. They may be cheap but they certainly dont lack in quality or power. and they always sound epic.
I'd go for a scorpion! I paid not much more than the Beowulf and my bike runs lovely and smooth with no lumpy tick over. Sound is deep and throaty. And it's road legal with baffle fitted. Some one on the site is selling one for under £300 at the moment! Comes with carbon infil panel. The can I have and what is for sale on her are both carbon with stainless end. Look on my threads you can see pictures of can fitted to my bike.
Will definitely check out more of your pics... Already sent message to 1000rr73... Thanks for the heads up!! The theme of my bike is ..... Used, but RUNNIN!!!
Beowulf are good, maybe not a Akra or Arrows but your not paying the same money. The come with a S pipe and the ones l get are baffled. I ve had 5 of them l put them on my trackbikes
Gives better power and curve than an arrow though YG, and only 0.9 down on an akra with a better curve.
I have the Beowulf, had one on the rr5 and now on the rr11 it sounds great without lumpy tick over, I definitely think the bike is faster pick up in the lower to mid range revs comes with a lower cover and was great value, Andy the manager at Beowulf is a very helpful bloke and I would recommend them without any hesitation. They tried lots of different link pipes to get the optimum power as Craig said[/ATTACH] Scorpion are good too it all comes down to you
I have exactly the same one on my 09 in full carbon . Sound and quality is excellent and no problems with fuelling etc .
