Its chain noise from the roller chain, every time a link hits the sprocket, it makes a noise, which is quieter with O-ring chain.
I'm using 530 chain (ANSI #50) because it was stock, and easy to get front sprockets for from surpluscenter.com. Plus, they've got more options for steel rear sprockets if I need them at Sprocketspecialists.com Why are you using #40? any reason? What is the stock sprocket size on your motorcycle? #40 isn't a popular size. Isn't that 425 motorcycle chain? You'll need to find a place that can get you chain in any length you want (because I had to lengthen mine). Electricmotorsport.com sells 420 and 428 chain, but no 425 (#40). I'm not all that worried about noise, but it would be nice to quiet it down a little more. I was more or less explaining to those that think its loud :) On Sun, May 4, 2008 at 5:51 PM, Andrew Wowk <[EMAIL PROTECTED]> wrote: > Travis, > you mention using an o-ring chain to quiet things down. I'm curious if > these are available for a standard #40 chain? I'm also using a machine chain > which seems to work fine. The noise generated might actually be good for > safety. The bike has a shock absorber in the wheel coupled to the rear > sprocket which probably helps some with the pulsations created by the driven > sprocket. > > > On Sun, May 4, 2008 at 3:59 PM, Travis Gintz <[EMAIL PROTECTED]> wrote: > > > So, another update to my blog this week. A friend (Loni) Has been > > helping me with the motor mount. We got it mounted earlier this week, > > and Saturday I installed the motor, front sprocket and the chain, and > > decided to test it out. This is with one 18Ah 12V battery. 80A when > > first spinning up, then drops to around 20A continuous. > > > > http://blog.evfr.net/ > > > > Just the video: > > http://www.youtube.com/watch?v=D27TJUc1fK8 > > > > The chain was cheap machine chain, and while its not TOO loud, It will > > be replaced by o-ring chain to quiet things down. I used a 13tooth > > front sprocket and 44 rear, but have 11 and 12 tooth fronts to test > > and play around with. Right now, its 3.4:1, and adjustable to 4:1 with > > the 11 tooth. > > > > Next step is the battery boxes and getting the controller and charger > > finalized. Synkromotive is finalizing the controller, and the charger > > is in the process of getting boards made. Once that is all together, > > we should be running under full non-tethered power. > > > > -- > > Travis Gintz > > 1986 Honda VFR DC conversion > > Http://blog.evfr.net/ > > > > > -- Travis Gintz 1986 Honda VFR DC conversion Http://blog.evfr.net/
