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Forum Home > Tips and Tricks > pulley size

pistonKiller
Member
Posts: 47

what is probaly best pulley combo for mudding and still have some speed of like probaly of 20mph

January 13, 2010 at 8:47 PM Flag Quote & Reply

wizzard
Member
Posts: 107

i always try to get as close to 1 to 1 as i can. alot depends on your trans and tire size tho.

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January 14, 2010 at 9:19 AM Flag Quote & Reply

pistonKiller
Member
Posts: 47

wat about if i use a 4 inch on front and 12 inch on the peerless

 

January 14, 2010 at 8:01 PM Flag Quote & Reply

wizzard
Member
Posts: 107

i used to run a 6" on the motor and a 6" on a peerless 820 (so 1 to 1) with stock 12" tires top speed was 18mph acording to my gps. my big ford has a 5" on the moter and a 6" on the peerless 820 and even with the 33's it still only tops out around 27mph. my other monster mower has like a 7" on the motor and like a 5" on the 820 with 33's and was gps'd at 43mph. so id say a 4 and a 12 would still be pretty slow

 

just look at the difference in wheel speed between the 2 with the same size tires and same trans

 

the ford  http://www.youtube.com/watch?v=5kGJycLNH_I

 

enforcer http://www.youtube.com/watch?v=NnBUBHDlnXo&feature=related

 

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January 15, 2010 at 10:50 AM Flag Quote & Reply

pistonKiller
Member
Posts: 47

hey can u send me a pic how u did your steering

January 15, 2010 at 7:06 PM Flag Quote & Reply

wizzard
Member
Posts: 107

ok ill just see if links works, heres the steering. it a rack and pinion from ebay $60 with a sliding colum

 

http://i226.photobucket.com/albums/dd185/wizzard351/IMGP0386.jpg

 

just for the heck of it ill go from front to back, this next one is the engine pulley and shows the colum goin up threw the stock location

 

http://i226.photobucket.com/albums/dd185/wizzard351/IMGP0388.jpg

 

then back threw the stock clutch ideler pulleys to the rear pully

 

http://i226.photobucket.com/albums/dd185/wizzard351/IMGP0387.jpg

 

the rear pulley runs this shaft that runs down threw 2 bearings to the 820

 

http://i226.photobucket.com/albums/dd185/wizzard351/IMGP0389.jpg

http://i226.photobucket.com/albums/dd185/wizzard351/IMGP0384.jpg

 

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January 15, 2010 at 7:34 PM Flag Quote & Reply

pistonKiller
Member
Posts: 47

thanks

 

January 15, 2010 at 8:08 PM Flag Quote & Reply

dangeroustoys56
Member
Posts: 126

Thats way cool wizzard- nice machines. 


I used a 6" on the engine and a 3" on the trans of my ex modded 6 speed murray and netted somewhere over 40 with it- using golf kart wheels ( stock height).

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January 15, 2010 at 11:27 PM Flag Quote & Reply

robbie
Member
Posts: 10

ive got a 11hp B&S on a murray if i put a 12in pulley on the motor and a 4 on the rearend about how fast would it go and would it still be good in mud

June 3, 2010 at 11:44 PM Flag Quote & Reply

seanmowermods
Member
Posts: 56

good luck getting a 12 inch inbetween the frame rails and its imposible to do it with an 11 horse people have trouble using a 6 on the motor and a 2 on the trans wich is the same gear ratio and i have a 12hp and my motor bogged down

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ride it until you brake it all the way!

June 4, 2010 at 3:12 PM Flag Quote & Reply

dangeroustoys56
Member
Posts: 126

A 1:1 ratio works best for offroad -  like 4 and 4 - 5 and 5 - something like that.


The main issue with a large motor pulley-  lag.  It takes longer for a motor ( specially a smaller engine)   to spool up , even using a foot/hand throttle - i ran a 6" motor and 4" trans on my 18.5HP murray - itd take a few seconds to wind up enough to shift higher.

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June 4, 2010 at 4:50 PM Flag Quote & Reply

pistonKiller
Member
Posts: 47

i had a 1:1 gear ratio on my big one which was 4 to 4 with 25 as ok for going though light stuff so now i am putting 4 to 6

June 4, 2010 at 5:11 PM Flag Quote & Reply

robbie
Member
Posts: 10

so a 4 and 4 would be good in mud and still have some speed?

June 5, 2010 at 9:53 AM Flag Quote & Reply

pistonKiller
Member
Posts: 47

ya with a 4 to 4 i was doing around 25 mph with a 12 hp

June 5, 2010 at 10:39 AM Flag Quote & Reply

jagilb@kcweb.net
Member
Posts: 152

you can get speed out of a 5hp. it is the weight / hp ratio and tire size that will get you. too much front end weight will kill you too. the huge front tires without 4WD look cool, but aint worth a crap in the mud (sorry guys) the best setup for mud is light but wide front tires. if you are gonna go creek blasting, you will still need the height in the front to keep the motor out of the water.  something that looks like the old school high boys will work better than slapping on an extra 80 lbs of extra weight in wheels and tires that dont do anything.

June 6, 2010 at 12:18 AM Flag Quote & Reply

jagilb@kcweb.net
Member
Posts: 152

the blue ford hasnt been stuck yet and it weighs about 800#



June 6, 2010 at 12:29 AM Flag Quote & Reply

Kel Anthony
Site Owner
Posts: 142

4 to 4 is good. FYI -- use a steel pulley, not aluminum, when mudding.

June 7, 2010 at 8:32 AM Flag Quote & Reply

robbie
Member
Posts: 10

how hard is it to get the pulleys off

June 7, 2010 at 9:09 AM Flag Quote & Reply

Kel Anthony
Site Owner
Posts: 142

Take the allan head screw or c-clip off, tap it with a rubber mallet, it should come right off.

June 8, 2010 at 11:14 AM Flag Quote & Reply

crazy mike
Member
Posts: 6

robbie it is possible to leave the stock pulley on the engine and switch to a 3 inch on the rear and pull off almost 25 i had a craftsman that way and i played with a few other things and it would do about 30. never gpsed it but i had my fourwheeler with a digital speedometer side by side with me.

February 10, 2011 at 11:50 PM Flag Quote & Reply

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