Finding the right pulley...
 

A few months back I inquired about using a "standard" drive pulley on the crankshaft for the starter/generator. With that being said after taking measurements of the original pulley with the clutch basket on it (that i don't need anymore) it seems the pulley does not have a very wide groove for the belt to ride. My original measures 7.5" o.d. with a .375" v-groove opening to fit on a 1.0" shaft. Can anyone direct me to a similar in size drive pulley to purchase that does not have the clutch mechanism?:beatdeadhorse:

Midwest Super Cub sells them

http://www.mcssl.com/store/midwestsu...r-engine-parts

If that's too much $$, then try McMaster Carr.

One off an original will work.
try our sponsors or put an ad in the wanted section.

Got mine from Grainger for like $20 including shipping.
http://www.onlycubcadets.net/forum/p...pictureid=6181

I went to Grainger.
They give you a choice of two..............(one piece units: cast iron).
One for $57.20
or one for $51.90 but wait! today it is on clearance for only $5.75
Yes $5.75

http://www.grainger.com/product/GRAINGER-APPROVED-V-Belt-Pulley-4RYT2?s_pp=false&picUrl=//static.grainger.com/rp/s/is/image/Grainger/3X829_AS01?$smthumb$http://www.grainger.com/product/GRAI...AS01?$smthumb$

Thanks to all for the info. Looks like the $5.75 one from grainger is the deal of the day. I just need to e-mail them to find out the max RPM of it. I need it to handle a max of 4000.

Got mine on clearance also, but not as good as you!

It is a Browning brand #AK74X1 and has an RPM rating on it of 3420.

$40 and up elsewhere.

The engine in these runs at 3600 RPM. I set all mine to run at 3800. I wouldn't suggest that pulley as it's RPM range is too low.

Probably have to go with either the steel or aluminum one from Midwest Super Cub as you mentioned earlier to get the higher rpm rating.

Although MSC does not show rpm ratings for them.

Hey Ford4150,
Might want to check that pulley on yours....................

I guarantee theirs will handle any RPM you throw at it. More than likely in the 10K RPM range. They're billet aluminum, and for pullers. :beerchug:

cub
 

That is a good looking pulley deal. I'd bet there is an underated fudge factor of 10-25% on the rpms. Isn't that how everything is rated anymore. I guess it just matters which factory in China made it. Mike

You can look @ Surplus center, They have good prices and some of their pulleys are Browning.

The number one criteria for selecting a pulley for your application, is it capable of handling the load and the rated RPM capacity. :ThumbsUp:

If you don't, you are wasting your time and your money.

Ok. So, are you willing to let your daughter stand next to you while you set high-idle, no load on that engine and find out for sure if the boys in China made it right and that 10-25% is true?

I don't even want to be the one standing there. :bash2:
You ever seen something like that grenade at that speed? :Explode:

Not cool.