[Complete] Bow Tie Mud Guy : BOUNTY HUNTER BUILD [2018 Build-Off Entry]

Should go fast enough to scare last night's meal out, what kind of gear ratios/tooth count are you running ?

"PHEW" I seen all your other update and thought you wanted to pull this one out too.

got the exhaust done , wiring done , hand controls for now so i can test fire the engine !!

Once i build my racer we should do some dragging! lol probably a few too many states to far away tho lol

first start !!

Love that sound! Cant wait to see it driving with that huge engine.

Sounds great, I wish I had one of those in my Sears.  Just like biggasmowers, can't wait to see this thing rip it up.

Yeah I definitely agree. That's a great big V-twin sound. So what's your sprocket sizes and rear tire diameter?

i wanna 670...sooooo bad! my JD is just beggin for it, lol!


That thing should perform great! Good luck with her!

Lol carl. Not sure if you can figure speed with a torque converter on it lol.

I can still get close with the torque converter.  I can look up the specs for his but they usually end up being 1:1 when you going top speed anyway.


Look what I found.

http://www.bmikarts.com/pdf/comet_40series.pdf

BOUNTY HUNTER UPDATE MARCH 20TH2018 :
got a lot done today , new front bumper , built rear bumper , mounted the break caliper , welded up the seam in dash , mounted gas pedal and cable , finished most of the nerf bars , finished up the 40 series CVT install , added 2 more bolts to the front axle plate , wrapped all wiring , relocated the battery tray and finished the tie rods !! if the progress keeps going like this it will be to paint by the 29th of this month !!

Wow. Do you have steel supports running along the sides of the frame?

Man that thing is sick! How much MPH do you expect? Should hall!

this monster Engine connected to an torque converter and from the torque converter on a live axle is a really nice setup. Cant wait to see this Beast running through some mud trails

@biggasmowers yes i have done some supports under the frame and the nerf bars are also tied in for support as well

@SebastianAlbrecht there will be no trail riding with this build , it will be my oval racer for the 2018 season and also used for grass drags this summer !!

@Double W Cross Ranch im trying to get at least 50 to 65 mph out of it when done !!

bow tie mud guy wrote:

@Double W Cross Ranch im trying to get at least 50 to 65 mph out of it when done !!

If you tell me your sprocket sizes and your rear tire diameter or better yet circumference, I can run the calculations and see if you going to go that fast.

Even with a torque converter Carl? Cause it'll be constantly changing ratios.

@Double W Cross Ranch i will be running a 10 tooth on CVT and a 54 tooth on axle , i also have a 14 tooth for the CVT and a 60 tooth for axle to start out with !!
@Crazy_Carl i will be running a 10 tooth on CVT and a 54 tooth on axle , i also have a 14 tooth for the CVT and a 60 tooth for axle to start out with !!

@Double W Cross Ranch

Take a good look at the spec sheet for his 40 series torque converter.  I'm not exactly sure what his tire size or driven pulley size is.  That would be helpful hint hint.  Anyway for a 7.5" driven pulley when the CVT first engages it has a 2.43:1 ratio.  As the driven pulley gets up to speed, the gear ratio gradually changes to 1:1.


@bow tie mud guy   If you could give me your rear tire size and measure the outside diameter of your driven pulley I could give you some more exact numbers, but here's my first wack at it.




Pretty impressive speeds, but if you ungovern that motor and take it up to 5000 rpm you'll have a real speedster.

@Crazy_Carl the rear tires are 16/6.5/8 x tracks 53 inches round ( out side diameter ) the driven pulley measures from edge to edge across the center is 8 inches

Well I'm not sure exactly what CVT you have, but for now I'm assuming the high ratio in it is 1:1.  I re-ran the numbers with your measured circumference, and changed the chart a little bit, There's two different max engine rpms on the left, your two different sprocket ratios are on the right, and on the far right are your four different top speed scenarios.  I don't know how long the track you plan on running is, but I'd go with 10 tooth on the CVT and 54 tooth on the axle for more low end torque.  You should do a top speed run with the other sprockets anyway for fun at least.



EDIT: By the way if you run the 14 tooth on the CVT and the 54 tooth on the rear axle and wind that 670 up to five grand you might just hit 65mph!

Go to 1:38 in this video.  That's going to be you and maybe some other guys in this build off(biggasmowers) too.

bow tie mud guy wrote:

@SebastianAlbrecht there will be no trail riding with this build , it will be my oval racer for the 2018 season and also used for grass drags this summer !!

thought you want to offroad it, because of the offroad tires.

@SebastianAlbrecht no not this one , i run on dirt oval that why the tires