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 91 
 on: April 16, 2014, 09:10:38 PM 
Started by Rex Crouch Jr 01 - Last post by Rex Crouch Jr 01
Ok guys we have a local race this weekend. If you're close by it would be a good time to get some practice before the National race on Memorial Day weekend. Gates open at 2:00. Races start at 6:00.

 92 
 on: April 16, 2014, 08:40:31 PM 
Started by Vollyfirelt1304 - Last post by Vollyfirelt1304
I'm new to mower racing and I've seen guys with kart seats mounted between the fenders. How is this done and be able to retain the favorite frame? Pictures would be a great help too. Thanks in advance.

 93 
 on: April 16, 2014, 08:33:22 PM 
Started by Gearhead0101 - Last post by The Tank
Not trying to start anything because I have no clue about particular engine but being on this forum for a while now, the last couple sentences sound rather arrogant and demanding. Sometimes you have to take the good with the bad, after all its a public forum but maybe someone will be able to help.

 94 
 on: April 16, 2014, 08:25:13 PM 
Started by Gearhead0101 - Last post by Gearhead0101
Hey yall, relatively new to the lawn mower scene, I work mostly on cars. My question is, would advancing the timing on my predator 212 at the cam sprocket make any difference in power?  Even just a small amount, I'm doing a lot of little things that, when put together will equal bigger gains. Any help would be much appreciated
P.S I know there's a chance of blowing the engine, I'm only talking about a tooth or two. Please don't waste my time with "you'll blow the engine!" Just answer the question.

 95 
 on: April 16, 2014, 08:16:17 PM 
Started by Ricky - Last post by Ricky
The system I put together works slick . I had to do something different after a couple of wrecks last season , I was out of position to be able to get to the foot brake .

 96 
 on: April 16, 2014, 07:13:34 PM 
Started by jerry55 - Last post by PJG56
Just to muddy the waters, i also run an oppy, i gear mine for 6500 and sometimes approach 6900 depending on the track .We use 8 engine 4 tranny 6"tires with 40.75 roll out,10 thooth on tranny/ 44 on axle final ratio 6.6/1

 97 
 on: April 16, 2014, 06:05:13 PM 
Started by leadslead - Last post by leadslead
Pm sent

 98 
 on: April 16, 2014, 05:44:23 PM 
Started by Ricky - Last post by leadslead
How dose that work with had brakes insted of foot same or a pain

 99 
 on: April 16, 2014, 03:33:36 PM 
Started by jerry55 - Last post by Jeff McKelroy #55A
Track is 1/8 mile.  125 ft staights and 45 ft inside radius corners.  I currently run an Oppy twin with about 25 hp with the simple mods I did.  Engine turns about 5200 rpm max.  I have 6" engine pulley, 4" transmission, 3rd gear is 25/25 and a 15 and 42 sprocket.  I have 8" rims with 16" tall tires.  I run about a 6:1 final on this track.  Works well but if I had more torque could I would like to get closer to a 5:1 final.  

Would having an 8" engine pulley with a 6" transmission give me more torque?



You would get better pull out of the turns with the 8X5 combination.  You're actually lugging it pretty good there. Depending on the cam, I found 6.5625:1 to be a good ratio for my opposed.  I was a bit weird with my gearing.  Because I had the torque, I wanted a bigger transmission sprocket to slow the chain down, so my gear combo was 16/56.  Now, you will hear all kinds of arguments that 3.5:1 is 3.5:1 is 3.5:1, and that's fine, BUT it did change the way the mower pulled, but made no difference on top speed.  And my chain lasted longer between services. Assuming a 48.86" rollout, you would still achieve roughly 36 MPH on the track.   twocents

 100 
 on: April 16, 2014, 03:03:57 PM 
Started by Todd99 - Last post by Todd99
Yes this chassis is sold!!

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