15 HP Engine, what is a good gear ratio? Thanks

[aham2003]

Yep, get the jackshaft positioned about where you want it,
then measure where you are at in relationship to the engine.

Make fine adjustments until the distance is one of the ones in the chart.

Make sure the pulley fits.
Make sure the sprocket fits.

If you must go in between two sizes, get the bigger belt.

Search for replacement belts in that size just to make sure.

---------- Post added at 03:11 PM ---------- Previous post was at 03:10 PM ----------



What do you know about crazy?

We have lots of Go Power Sports Reps here!

Want to know how to get 10 Percent off your next purchase?
I'll tell ya for 8 percent.

---------- Post added at 03:16 PM ---------- Previous post was at 03:11 PM ----------

There may be a discounted one for sale that needs a DriveR and Belt.
http://www.diygokarts.com/vb/showthread.php?t=34238

Just used the 10% discount for a $240 dollar order last week!!

 

[bob58o]

Are you a GPS rep? LOL. It would be crazy to buy that thing. You can get a jack shaft kit, 40 series pulleys, and belts for about $175. If im not mistaking, they want $400 for that kit. So they want $275 bucks for a $30 belt and $30 piece of steel.

you got this one right?
http://www.bmikarts.com/Motor-Mount-Plate-with-Jackshaft-and-Bearings_p_1051.html

Know what belt works with a 420 and 40 series?
You have to drill your own holes right?

 

[Joe-405]

Are you a GPS rep? LOL. It would be crazy to buy that thing. You can get a jack shaft kit, 40 series pulleys, and belts for about $175. If im not mistaking, they want $400 for that kit. So they want $275 bucks for a $30 belt and $30 piece of steel.

Actually I am cause I have a used one in the for sale section.

 

[aham2003]

you got this one right?
http://www.bmikarts.com/Motor-Mount-Plate-with-Jackshaft-and-Bearings_p_1051.html

Know what belt works with a 420 and 40 series?
You have to drill your own holes right?

Yes thats the one I have. Havent started mocking it up to measure and drill holes yet. Should be working on it within the next week. Ill have a build thread with pics going once I start.

 

[thunderstorm]

I'm going to order the mounting kit
http://www.bmikarts.com/Motor-Mount-Plate-with-Jackshaft-and-Bearings_p_1051.html

But I have no idea what the center distance is going to be so I should order a belt later right?
Or should I gamble with the 9 3/4?

 

[aham2003]

I'm going to order the mounting kit
http://www.bmikarts.com/Motor-Mount-Plate-with-Jackshaft-and-Bearings_p_1051.html

But I have no idea what the center distance is going to be so I should order a belt later right?
Or should I gamble with the 9 3/4?

You will create your own center to center distance when you mount the motor to the plate. I am going to mock mine up on my kart and see where I want it before I order the belt.

 

[bob58o]

Don't gamble.
Mock it up and see.
Or wait until aham does it and copy.

BigMark has this, but with the 44 series driver.
http://www.diygokarts.com/vb/showthread.php?t=33183&page=6

 

[thunderstorm]

Ok. Thanks. How much weight can I expect the torque converter and the engine to push?

 

[bob58o]

Well that depends on gear ratio and how fast you want to go.
600 lbs? more?

 

[thunderstorm]

Yes 600 pounds

 

[bob58o]

I think 600 lbs and you should be good.

 

[thunderstorm]

Thanks everyone, but how do i know how reasonably loose the torque converter belt is suppose to be?

 

[itsid]

you measure the distance and buy the correct belt for said distance... easy huh

vice versa.. say you have a belt; then adjust the distance to match it's specs.
also not too difficult, is it?

'sid