Prop sleeves for #6 to 3a-4-5
 

Where can i buy the sleeves to run a number 6 prop on a 3a-4-5? Its a thin plastic sleeve for the non splined section.

Try contacting Arneson out in Ca. They make adaptors, they should supply the sleeve.

That's a Mercury part, I'll try and remember to post the pn tommorrow, we normally keep them on the shelf.

Hello,

We have them in stock and ship immediately.
$26.26

920-295-4435

Thank you, Brett

Whats the deal with these sleeves? Arneson makes the adapter kit, which allows you to use the big shaft props on a small shaft #3 or #4 drive. But the sleeves are different between a say a #5 and #6 prop. So, if you were to use the arneson adapter, with a big shaft prop, which sleeve do you need??? Not familiar with the big shaft stuff yet

i may be wrong but a 3a, 4 and 5 all share the same prop shaft to prop mating dimension. A 3 is smaller. A 6 is bigger.

But, i could be wrong, someone will correct me I am sure.

A III and IV share the same 19 spline small shafts, where as the IIIA and V share the larger propshafts.

The propshaft on a 6 is 1 7/8, the 3A & 5 are 1 3/4. Then the diameter is cut down where the spline starts. These sleeves are inserted in the front of the prop to make up the difference in the shafts. The splines are the same on all the large shaft drives.

The early large shaft props were cut for the 1 3/4 (pre #6 drive), they can be bored out to accommodate the sleeves.

Am I making sense? Doing this in a hurry, on the way down to Holiday Isle!

Where does a 4 fall into this?

A IV has the same propshaft as a III. You can switch props between a IV and a III. Basically, a IV is a shorty III, and a V is a shorty IIIA. However, there are a lot of IV's that have been converted to large shaft setups over the years.

I agree with Mildthunder

You seem to know your drives, Is there any way to run a hydromotive prop on a Speedmaster 2 that has a 1 1/4 diam.
19 spline shaft with a 4" prop hub. I would really like to try a 14.5 x 28 3 blade but dont know if any hubs are available to slip into this prop.

The 26 spline prop shafts come in 1.75" OD and 1.88" OD. The #6 drive uses the larger 1.88" which uses the thinner delrin sleeve. The #5 and other older drives use the thicker delrin sleeve. These sleeves are used to take up the difference in the OD of the propeller to make a tight fit.
These sleeves have nothing to do with the spline configuration. Prior to these "bushing bores", the propellers were tapered in the bore to fit the shafts properly.

Call me if you wish to hear the complete history.

tssteph, you need the #5 bushing and should be fine.

Brett