Upgrade motors for King of Shaves

[forescott]

You dont happen to have part numbers on those boca bearings do you???

[BILL OXIDEAN]

You dont happen to have part numbers on those boca bearings do you???

Hey Forescott! The main purpose of my spacer is to reduce side load on the bearings as thrust creates resistance to the shaft. They also support the bearing alignment. My spacer is literally sandwiched between bearing races..

Another great question..

[FighterCat57]

Boca Ultra Seal Hybrid Ceramics:

Flanged: SMF74C-YUU NB2
Non: SMR74C-YUUNB2

These are for the stock EKOS stingers.
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Drugtest

[forescott]

Exactly what I was looking for. Thanks guys!

[forescott]

Where is a good place to purchase these? Are they pricey?

[BILL OXIDEAN]

Where is a good place to purchase these? Are they pricey?

Theyre not TOO bad, they do cost a bit more than others, but as we've heard a million times its better to by smart once..

Now if we were talkin' cars and bashing, nope save your dime, but we're talkin' boats here. Reliabillity is key as a bearing submerged in water spinning profusely is an extreme situation.

These bearings last a LONG time you'd definitely go through 4-5 sets of regular bearings before noticing anything alarming on these

bottom line yes a considerable initial cost but cost effectiveness you're getting 2-3 times your money's worth

[FighterCat57]

Where is a good place to purchase these? Are they pricey?

https://www.bocabearings.com

Don't know of anyone that discounts them much if any. Boca Bearings are usually a one time purchase (in my experience) so really don't mind just paying retail for them.

I've been spinning mine over 30k in salt water for a while now... no troubles.
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Romanian cooking

[Rumdog]

Screw bearings. Run a bushing. When/If it wears out, replace it. Whats the need for a bearing? You're getting resistance in the flex in every little bend. Smooth bearings mean nothing when your prop is ripping through the water. We're not talking about free wheeling here, right?

[Jeff Wohlt]

Boca bearings are cheaper when you buy the 4 pack

[forescott]

Now that I've got the bearings out, I noticed this teflon spacer.
A trip to Franciscan hobbies in the morning will yield us a piece of brass tubing for a pro setup.. See you cats manyana..

Well, I figured out the purpose of the teflon spacer in the stinger today. I noticed one of my prop shafts was really "wiggly" compared to the other. turns out the front bearing slid back towards the end of the stinger. The teflon tube is a spacer between the two bearings that keeps the front bearing from sliding backwards. The front bearing is inserted from the rear, then the spacer, then the rear bearing is pressed in place.(or super-glued like mine because it keeps coming out)

[BILL OXIDEAN]

Well, I figured out the purpose of the teflon spacer in the stinger today. I noticed one of my prop shafts was really "wiggly" compared to the other. turns out the front bearing slid back towards the end of the stinger. The teflon tube is a spacer between the two bearings that keeps the front bearing from sliding backwards. The front bearing is inserted from the rear, then the spacer, then the rear bearing is pressed in place.(or super-glued like mine because it keeps coming out)

Precisely, I saw the teflon and realized it won't hold under the power I'm throwing at it..
A metal spacer holds it solid..

Great observation.

[forescott]

Precisely, I saw the teflon and realized it won't hold under the power I'm throwing at it..
A metal spacer holds it solid..

Great observation.

I lost the stock spacer and ended up using a piece of teflon tubing from my thundercat. It works great!

[FighterCat57]

I lost the stock spacer and ended up using a piece of teflon tubing from my thundercat. It works great!

Heh, I did something similar where I had some left over stuffing liner from a 4mm shaft setup that fit right in.

Good bearings are a paramount with these tiny sizes and high RPMs.

[scubasteve95]

VENOM EKOS 4S 5000mah LIKE BUTTER

bill,nice up-grade on the stingers
when the time comes that will be the set up i run with.
thanx for a great idea.......

[forescott]

I agree. One thing I realized is you have to be real careful not to leave too much space between the stinger and drive dog because the prop shafts are a little short and too much space will cause the flex cable to ride inside the inner bearing instead of the prop shaft itself.