Recent Posts

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1
Coffee Shop / Re: Permenent track Surface options
« Last post by bimmerbaz on Today at 01:33:16 AM »
thanks for that, what do you guys race on?

Just Dirt? Speedway tracks?

Any input would be great.

Cheers Baz  8)
2
Trannys / Axles / Wheels / 6 inch to 8 inch wheel adaptor
« Last post by Bill Morrow on January 15, 2018, 09:16:07 PM »
I want to switch from 6 inch to 8 inch  wheels at the track without removing rear hub. Anyone know of such an adaptor ? Thank you.
3
Coffee Shop / Re: Permenent track Surface options
« Last post by PJG56 on January 14, 2018, 05:47:30 PM »
Some sort of clay will be your best bet
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Coffee Shop / Permenent track Surface options
« Last post by bimmerbaz on January 14, 2018, 04:40:00 PM »
Hiya,

I am from New Zealand down under and i am looking for some information regarding the types of track surfaces you guys run on. We have a bit of land that has a track on it and have rolled and smoothed it out. We water during the day but still it seems to rut up pretty bad at the end of the day.

Do you guys have the same problems and just re roll and level or do you use clay like speedway tracks. or maybe somthing else.

We want to try and get a good surface to race on and i guess sombody on here has found the best way to prepare and maintain your tracks.

Our website to look at what we do here is http://www.boplmrc.co.nz/ and out facebook is https://www.facebook.com/profile.php?id=155977467863441&ref=br_rs

Cheers for any help

Bazza  8)
5
Racing Mower Builds / Re: john deere build
« Last post by Mower Maniac on January 14, 2018, 10:41:56 AM »
55 would probably be the happy medium between top speed and acceleration. You could end up at about 56 with a 5 to 5 on the bottom. A 10 tooth on the gearbox and the 48 in the rear. Using as lightweight components on the drivetrain will help with acceleration.
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Newcomers / Re: Newcomer to lawn mower racing from NC
« Last post by Tazz914 on January 12, 2018, 12:39:07 PM »
Where in north carolina are you?
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Racing Mower Builds / Re: john deere build
« Last post by PJG56 on January 11, 2018, 08:49:01 AM »
not really sure on how possible it would be but somewhere in the neighbor hood of 50-60. just kind of throwing some numbers out there.

I think the 60mph is a long shot,but with some simple math using what you have for parts here are a few gearing combination for you  assuming a 49" roll out on rear tires(they could be a little more or less) and 6000rpm @ motor with 6"pulley on motor and 9"pulley on gearbox.(ratio @ear box is .6666 to 1) motor rpm 6000 x.6666= 4000rpm@ear box

gear box 12 tooth sprocket -rear axle 48 teeth final ratio =6 to 1 MPH=46.4 (axle rpm=1000)
"                                     " -rear axle 46 teeth final ratio=5.75 to 1 MPH=48.4 (axle rpm=1043)
"                                     "- rear axle 44 teeth final ratio=5,50 to 1 MPH=49.59 (axle rpm=1091)

Hope this helps you.. Sincerely Paul Guptill
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Racing Mower Builds / Re: john deere build
« Last post by Fast108Deere on January 10, 2018, 09:24:38 PM »
not really sure on how possible it would be but somewhere in the neighbor hood of 50-60. just kind of throwing some numbers out there.

pics our coming still just aint had time to figure it out yet, since photobucket don't really work anymore.
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Want To Buy / Who Has It? / Re: Looking for a full rolling chassis
« Last post by nic_hayes on January 10, 2018, 08:35:18 PM »
I have a race ready CP for sale, nichayes@live.com
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Racing Mower Builds / Re: john deere build
« Last post by Mower Maniac on January 10, 2018, 07:17:18 PM »
What speeds do you want to hit?
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anything