| Author | Message | ||
     M1combat |
I've done a decent bit of research into the benefits and drawbacks regarding v angle choice over the last few days. So far I've found that a V10 "should" be 72 degrees, a V8 "should" be 90 degrees due to the effects on balance in the first order. This is also why GM decided NOT to produce a V10... They didn't want to do it at 90 degrees like Chevy and Ford did because it's not technically correct. I've also found that a good deal of VW's new race/performance oriented engines are 72 degrees (including the engine in the Bugatti Veyron). The V10 era in F1 was dominated by 72 degree engines as well. I've also looked at torque curves from at least one other 72 degree V-twin (or V2 as I'm not sure if it had one crank pin or two) and it looked to have an EXCELLENT power curve. Why 72 degrees in a V-twin then? Packaging? Balance across a specific RPM range? Power curve? Please advise  . Thanks in advance. /EDIT - ON Oh and THANK YOU fortaking the time to answer our questions and in general be such a great company to buy products from. I've sold two Buells already (not mine, but just by explaining them to friends who then went and bought one) and one of the things that really seems to surprise them is when I tell them that the company is accessible. They seem to like the hat that Erik signed in Daytona too . (Message edited by M1Combat on July 16, 2007) | ||
| Anonymous |
Lots of benefits. There really were a lot of reasons, but here are a few fundamental ones. It is easier to package than a 90 and get proper weight distribution. It has more room for intakes and smaller balance weight requirements than a 60. It sounds incredible. | ||
| Chadhargis |
My thoughts were that a 70 degree allows straighter intakes versus a narrow angle. | ||
| Ft_bstrd |
I look at the 72 as the perfect compromise between a 45 and 90 degree engines. Am I correct that the farther the cylinders spread, the easier it is to control vibrations. If it sounds like the hellspawn of a 45 degree Buell and a 90 degree Ducati, I think I'm gonna be in love. Instant. Auditory. Erection. | ||
| M1combat |
Thank you. Any drawbacks? | ||
| Stealthfighter |
VOXAN use 72° v-twins too: http://www.voxan.com/voxan/ | ||
| Hondaamer |
Just clicked on this link http://www.voxan.com/voxan/ NICE SOUND} | ||
| Hondaamer |
Helicon engine features: • 72-degree cylinder angle and a very compact case and cylinder head design allow the engine to be located far forward in the chassis, distributing 54 percent of the vehicle weight on the front tire. • The 72-degree V-angle provides a steep 18-degree valve angle and straight path for the down-draft intake system. • A cylinder angle of 72 degrees reduces shaking forces. The engine is also fitted with three balance shafts: two balancers for canceling primary rotating imbalance and a third balancer for canceling the rocking couple | ||
| Pushrodpete |
Rumor for 2008: By joining 5 Helicons, Buell introduces a 700-HP V-10 motorcycle: The 5625R. People still bitch about the scoops..... |
