11-03-2012, 06:38 PM | #1 |
Gone Wild
Join Date: Sep 2012
Posts: 214
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20.9 mph too fast?
After getting good compression readings and airing up the stock sized tires (18's) to 20 psi, I adjusted the govenor and got a GPS top speed of 20.9 mph. I don't have a tach yet so I'm not sure if I'm spinning it too fast. Cart is an 84 marathon gas on stock tires and premix gas/oil 100:1. What would be a safe top speed so it won't overrev?
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11-03-2012, 07:41 PM | #2 |
I Refuse To Get Stuck!!!
Join Date: Jun 2010
Location: Hilton,NY
Posts: 5,427
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Re: 20.9 mph too fast?
I ran mine at 100:1,ungoverend with 22" tires for long-runs wide-open at 23-24mph.Never hurt anything in almost 4yrs.!
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11-04-2012, 06:17 AM | #3 |
Gone Wild
Join Date: Sep 2012
Location: Michigan
Posts: 351
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Re: 20.9 mph too fast?
I run my 88 WIDE OPEN all the time, been that way for years
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11-04-2012, 02:42 PM | #4 |
Not your usual outlaw
Join Date: Oct 2008
Location: Near Lake Geneva, WI
Posts: 20,054
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Re: 20.9 mph too fast?
There is no direct equation between speed and rpm's. I ran my stock Yamaha motor at about 4200 rpms and could get 31 to 32 mph.
The only way to tell for sure is with a tach. |
11-04-2012, 05:36 PM | #5 |
Gone Wild
Join Date: May 2011
Location: Las Vegas NV
Posts: 330
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Re: 20.9 mph too fast?
I don't have either. I asked my wife to drive my Honda Civic after me, running at full speed. I found out my speed: 21 mph with a 20" diameter tire.
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11-05-2012, 05:14 AM | #6 |
Getting Wild
Join Date: Aug 2012
Posts: 87
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My 88 2pg runs at 22 mph on 20" tires. No problems.
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11-06-2012, 12:12 AM | #7 |
Gone Wild
Join Date: Sep 2012
Posts: 214
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Re: 20.9 mph too fast?
Thanks for the input. I'll be doing a battery tray for a group 31 AGM battery I already have and a custom air filter setup next.
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11-06-2012, 08:16 AM | #8 |
Gone Wild
Join Date: Sep 2012
Location: bikini state
Posts: 2,715
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Re: 20.9 mph too fast?
i no i read on here"bgw"if you tac more than 5 grand you will blow it?? i ran mine wide open for 3-4 hrs recently with no problems,but when on pavement i get wide open then back off a lil since i read here it can and will blow up? did i read wrong?
still trying to figure how it runs so good when i can grab the clutch and pull up and in and the main bearings have an 1/16th inch play really worn but hauls azz still..i mix 128.1 and no smoke or smells either.should i mix stronger? |
11-06-2012, 11:24 AM | #9 |
Hammer Down !!!!
Join Date: Jun 2010
Location: Lake Geneva, WI
Posts: 2,681
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Re: 20.9 mph too fast?
Hit Ebay for a cheap tach, they're right around $15 and will end any questions - Sassy is right that at 5k you are beginning to risk engine damage (factory redline is listed as 5k) ... Spending the $15 now and keeping an eye on your trigger foot will eliminate the potential for a much more expensive and involved fix down the road
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