Rumor or not: Thread-on fan for stratus/etc ?

[Daniel Jetschin]

I've heard that Minair is working on a fan with threads instead the brass cones to 'set and forget' the fan and don't have to fiddle with dial indicators and stuff. :roll: Is it true ?

[ChrisLaFollette]

I havent heard anything like that but ive heard about new collets that are tighten and forget, no dial indicating the fan just tighten em up and go.

[WayneBrown]

Both correct. The new 50 in development will have a thread on fan, and the new collets for the larger engines will be internally threaded. I've seen the new collets firsthand, and it's sooo simple to look at, but takes a special someone to think it up.

[ChrisLaFollette]

Well if its all true WHERE CAN I GET SOME OF THE NEW COLLETS? :)

[WayneBrown]

two weeks.. ;)
it's gonna be awhile, they are machining intensive

[X]

Thanks MA. (if it real) Took me 2 hours to dial it last night but I can not get it less than 1000.

[ChrisLaFollette]

They need to hurry it up. Im calling Jeff tommorow and begging him for a set. :lol:

[WayneBrown]

Oh I'm sure Jeff has a set you can play with Chris... :twisted: :twisted:

[Daniel Jetschin]

Thanks for clearing things up. Sat 2 hours yesterday and couldn't get it right, then I was so §$&/§$/% that I thought about quit flying MA :arggg: :dontknow It's a major pain in the youknowwhat especially when trying new things

[DavidH]

Even with the new style collets that are threaded. The fan will still need to be checked for run out. The new style collets should make it easier to get the fan hub below .002.
But don't put the dial indicator away, it will still be needed to check runout.

David

[ChrisLaFollette]

Oh dang. :lol: I knew there would be a catch, I still got my dial indicator and machine vice handy....

[I3DM]

Do these new collets look the same, only threaded inside ? if so, how do you put them on \ off ?

[ChrisLaFollette]

If MA was still open id call them and ask. I spoke with Jeff and Tim was making some right then and said it would still be a few weeks before they had some because he was making one big batch at once for everybody. Ill let you know once I get my hands on some, or WAYNE BROWN THE CLOWN chime in here and let us know what they look like. :badair:

[DavidH]

The new style collets are just like the old style collets. With two differences. They are threaded on the inside, plus there is a hex nut on top of the collet. It will take a 12MM socket to tighten and loosen them. They will made of brass, so will need to be careful and not round off the nut part of the collet. The upper collet will be the only threaded part. The lower collets will remain the same as it is now.
The new style collet was shown at the Toledo Trade show the first weekend of April.
There is probably some pictures of them floating around the internet somewhere.

David

[WayneBrown]

Yep, what David said.

[I3DM]

David, thanks for your reply, sounds like a good idea ! :noteworthy

[Daniel Jetschin]

So does the upper threaded collet hold the fan down too or do we still need the OS supplied nut ?

[I3DM]

Good question Alu ! :glasses2:

[WayneBrown]

the upper collet IS the nut.
You will need the washer though.
Imagine the existing collet with a nut fused to the top of it, making it one piece.

[Daniel Jetschin]

I just couldn't imagine that the brass "nut" can be tightened enuff to keep the fan from coming loose. Would be afraid from turning the nut round

[WayneBrown]

The threads are the entire assembly, from the tip of the collet to the top of the nut.
A lot of area to work with compared to the nut with 5-6 full turns max.

[Dr.Ben]

You can get the nut quite tight IF you use a 6 pointed socket. A 12 pointed one does risk rounding off the edges. A scant amount of blue loctite is used for extra security. On especially balky engines, slitting the lower collet in one place parallel with the long axis of the collet allows the lower collet to pinch the crankshaft, relieving the upper collet of most potential for loosening when starting a tight engine.

Ben Minor

[saary]

any updates/confirmation on this :? ?

[saary]

i just got my kit and the upper collet not threaded :arggg: :bomb:

[Rodney]

Wow it took M/A that long to catch up. Should have been chatting with Buzz as he has been selling them for some time now. But dont be fooled as this will not solve your dial indicating issue. Dont thro it away as you will still need it.