Honda 500 in a 416

[maxtorman1234]

I have a 4 cylinder honda 500 here im going to be putting in a 416. It'll take some time and work but i think it;ll be neat. only real problem i have run into is that i have no way to determine the proper gears that i'll need to hook the transmission on the engine to the driveshaft. I want the driveshaft to turn 4500 rpm when the engine is in 5th gear. I'll be using a chain between the sprockets on the driveshaft and transmission. does anybody know how i would determine the size of sprockets i'll need to use to get the desired speed? Any help is appreciated, thanks

[Simplicity314]

Maybe these will help: http://www.phoenix-mfg.com/acatalog/size_chart.html http://www.benchnotes.com/Gear%20and%20pulley%20Speeds/gear_and_pulley_speeds.htm

[BLT]

This will take a bit but your answers can be solved. First of all, where is the five speed transmissin coming from? The 416 is a 4 speed shuttle correct?

[maxtorman1234]

Ok, thanks ill have a look at the sites, i should be more clear, the honda 500 has its own 5 speed transmission attached to the motor, i also should have mentioned im putting a 3 speed into the 416 instead of the shuttle. the chain will be from the engine's transmission to the driveshaft i need to determine the right gear sizes for the gears i plan to use between the output on the transmission and the tractor's driveshaft. hope that simplifies the question, thanks I was looking through my honda repair book and came across the gear ratios. here is what i found 1st 2.353 2nd 1.636 3rd 1.269 4th 1.036 5th 0.900 I have no idea how to read this, if someone knows could you please explain it to me. I am used to the common 4:1 way of expressing a ratio, but not just a plain # like 0.900. thanks,

[MPH]

Thinking first would be your input turns 2.353 times to turn your output once. 5th would be your input turns .900 revolutions to turn tour output once.

[maxtorman1234]

ok, I got my dad to help me, from what we figured out, primary reduction according to the book is 2, so immediately engine rpm of 6,000 is reduced to 3,000. From there, in first gear it's reduced another 2.353. therefore, in first the output rpm of the engine is 1,274 rpm. In second, the output rpm is 1,833. In fifth it's 3,333 rpm. In order to get the driveshaft RPM over 3600 so i will be able to go faster than the tractor originally did, i will need to have a 1:1.4 gear ratio from the transmission output to driveshaft. That will get me 1,785 rpm in first, and 4,666 in fifth. Now, the tractor goes 6MPH when the driveshaft is at 3600 rpm. So now the driveshaft is going 4,666 rpm, divided by the old speed, 3600, gets 1.296. Now i multiply 1.296 by 6(old top speed) to get the new ground speed of 7.77MPH. I repeated this procedure for all other 4 gears to get my ground speed. I think i have done this properly. If anybody else has input please let me know. I see many advantages to this:D I will be able to shift on the go with the clutch on the engine. In third gear here are my ground speeds for the engine in gears 1through 5 1st 2.92MPH 2nd 4.28MPH 3rd 5.51MPH 4th 6.75MPH 5th 7.77MPH

[MDB]

Sounds like a neat project Max,8D Glad to see you back around posting again.:D

[maxtorman1234]

Just thought i'd mention that at 9,000 rpm the engine puts out 50HP and 30 ft.lbs of torque. with the gearing I should have lots of power to spare.

[AC808]

Id like to see some pics...I recently picked up a Honda CX500 that i thouhgt about doing that with...

[fourfiftyfred]

Is the honda motor air cooled on not??????If not you may run into cooling prob. unless you can make a fan assy. to blow across the cooling fins of the motor.

[maxtorman1234]

The motor is air cooled,since its a honda, it runs fairly cool. we will see how it turns out, i may need to add a fan. I would also like to post some pictures, but have run into trouble with paypal and cannot pay dues for some time.

[stevenj]

quote:

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Originally posted by maxtorman1234
The motor is air cooled,since its a honda, it runs fairly cool. we will see how it turns out, i may need to add a fan. I would also like to post some pictures, but have run into trouble with paypal and cannot pay dues for some time.

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They accept checks and I'm sure that they would also accept cash payment if you don't have a checking account.