Dragbike.com Homepage
Click here for more companies that support Dragbike.com!
Forum Home Forum Home > ADVICE ZONE > Engine Building 101
  New Posts New Posts
  FAQ FAQ  Forum Search   Calendar   Register Register  Login Login

GEARING
 Post Reply Post Reply
Author
Message
  Topic Search Topic Search  Topic Options Topic Options
mutt1 View Drop Down
Newbie
Newbie
Avatar

Joined: 07 February 2008
Location: United States
Online Status: Offline
Posts: 14 		  Quote mutt1 Quote  Post ReplyReply Direct Link To This Post Topic: GEARING
    Posted: 25 June 2009 at 11:04pm
I HAVE A 1428 SUZUKI 1-2 AUTO BEST E.T 5.31 AT 121  1/8TH MILE  ,MY GEARING IS 15 /50 MY 60 FT TIMES WAS 1.23 USING A 26/7/18 GOODYEAR SLICK ,WENT TO M/T AND 60FT WENT TO1.33 TO 1.30 BEST ET 5.42 120MPH .WAS THINKING ABOUT CHANGING FRONT SPROCKET TO14 TOOTH  I AM USING A M.T.C LOCK UP LEAVING LINE AT 4,800 RPM SHIFTING AT 10,875 .ANY INFO ON THIS SET UP, SHOULD IT PICK MY 60FT UP AND E.T OR HURT IT.
mutt1
Back to Top
TriumphRacer View Drop Down
Newbie
Newbie
Avatar

Joined: 21 June 2004
Location: United States
Online Status: Offline
Posts: 18 		  Quote TriumphRacer Quote  Post ReplyReply Direct Link To This Post Posted: 18 July 2009 at 2:04pm
I wrote a program called Performance Miscellaneous which has a lot of gearing info in it.  It's on my website on the "Download Files" page.  It's shareware so that means you can try it first before you spend any money.  Let me know if it helps or make suggestions as to what I can add.
 
 

Keller Racing
Back to Top
suzukiray View Drop Down
Senior Member
Senior Member
Avatar

Joined: 12 January 2005
Location: United States
Online Status: Offline
Posts: 1518 		  Quote suzukiray Quote  Post ReplyReply Direct Link To This Post Posted: 18 July 2009 at 2:46pm
Why are you leaving with the rpm so low? I have a small tire bike, though not as quick as yours, & I leave at 7800. Have you tried working with the static & weight on the arms to get it to leave above 7000? That would bring your 60 foots & your ets both down. Ray.
GOD rides a SUZUKI!
Back to Top
David Fletcher View Drop Down
Senior Member
Senior Member
Avatar

Joined: 18 November 2003
Location: United States
Online Status: Offline
Posts: 238 		  Quote David Fletcher Quote  Post ReplyReply Direct Link To This Post Posted: 19 July 2009 at 10:17am
What I find interesting is the 60ft slowing down so much when you installed the M/T.  Why would you use the M/T when the Goodyear was clearly superior and try to make up the 60ft with gearing?  I have been thinking about trying the Goodyear again myself.  Don't mean to hijack this thread.
I'm not as smart as I look!
Back to Top
rubbo1342 View Drop Down
Groupie
Groupie
Avatar

Joined: 17 August 2008
Location: Virgina
Online Status: Offline
Posts: 29 		  Quote rubbo1342 Quote  Post ReplyReply Direct Link To This Post Posted: 19 July 2009 at 8:05pm
I run a 1166 small tire. 16/44 gearing.  I launch at 10000 and my best 60 ft is 1.25
1/8 mile  5.67 at 124.78. . I also run a goodyear.  Are you using a 2 step?
YES its Fast....No you can't ride it
Back to Top
MitchB View Drop Down
Senior Member
Senior Member
Avatar

Joined: 24 November 2003
Location: United States
Online Status: Offline
Posts: 869 		  Quote MitchB Quote  Post ReplyReply Direct Link To This Post Posted: 20 July 2009 at 3:01pm

I agree with Ray, I would be leaving in the 7-8K range, the bike should go much quicker.

Mitch
Back to Top
mutt1 View Drop Down
Newbie
Newbie
Avatar

Joined: 07 February 2008
Location: United States
Online Status: Offline
Posts: 14 		  Quote mutt1 Quote  Post ReplyReply Direct Link To This Post Posted: 20 July 2009 at 4:36pm
went racing  this weekend added 15 grams on clutch and took 3 grams off arms , went up to 5,800 rpm on two step , slipping clutch about 20 to 25 ft ,  60 ft  1.34 all day , ran 5.45 three or four times , i  beleave  can get my 60ft time back to 1.23  by going up on rpm  im going to try 7,000 and see how far it slippes the clutch ,then add some grams of weight on arms and maybe some more stactic      thanks for the help i have been going the wrong way on clutch and rpm
mutt1
Back to Top
 Post Reply Post Reply

Forum Jump Forum Permissions View Drop Down

Bulletin Board Software by Web Wiz Forums® version 9.54
Copyright ©2001-2008 Web Wiz