My88Se

iTrader: (10)

Are you guys serious?

Air goes from a dead end, a wall if you will, to a smooth radius curve. Of coarse this is going to improve airflow. Like said before, fluid dynamics.

Doggyollie

Thanks Zach, I think I will stay away from them just because they can come loose though. I know about the loctite fix, but it still scares me.

What does afl% mean?

Zach McAfee

From what I understand, it's an airflow reading from the air flow meter. I don't have an AFC and I don't have much experience with them so I'm not sure.

Mr. Gadget

I thought this was interesting ans somewhat related...

http://www.rotaryaviation.com/engine_failure.htm

Zach McAfee

Wow. See, it's ok to blow an engine on the street, but I can't imagine having that happen at 12000 feet!

fong

iTrader: (77)

ummm, was thinking about to get a pair, but now I think I will pass that.

Zach McAfee

I still defend Pineapple Racing and say not to pass because of these cases. If your serious about the sleeves, when you call to order ask about what has happend to others and what they recommend you do or what they have done to solve the problem.
All great products have their faults. This one just happens to be major.

pp13bnos

iTrader: (1)

If you have a extra set of sleeves around, you could just send them to Pineapple and have them fit them/secure them. I beleive they do it for free.

I remember reading somwhere that the intake charge could reach speeds upto 120mph (Correct me if I'm wrong.). Think of what happens when you're removing the sleeves. Not only does it dead end, but there's also a lip. This is not good for airflow at all. I would guess you would get a high pressure area at high rpms, becuase the intake charge is'nt being ramped into the motor. This high pressure area, could'nt be anygood for airflow. CJ

rotarygod

iTrader: (1)

Try airspeeds of up to 450 mph at max rpm!!! I know which number you are thinking of but won't get into it here.

Mr. Gadget

Zach, you’re contradicting yourself: "All products have faults and this one just happens to be major", yet, you want folks to use them.

I'm sure you will find that almost everyone here thinks the concept is great, however, not at the chance of loosing an engine.

I myself would pay twice as much if the were machined one piece units.

My88Se

iTrader: (10)

Honestly that is the FIRST time that I have heard of that ever happening.

Zach McAfee

I wouldn't say that's a contradiction, simply because I suggest you ask the source what has been done to correct the problem.
My only contradiction is that I talk them up while I don't even have a set. I just think it's a good design. Simple, but good.

Roy James

Yeah, they seem pretty solid. On that aviation failer link someone sent, i think that could happen on any sleeves, pineapple or not, since they all have the rods (even though might be pressed in better, but no proof either way). Another thing, who the HELL is going to trust a rotary engine flying a plane?! sure as hell not me, hell i hardly trust them to get me to school and work with-out a break down

Mr. Gadget

I think we all have good opinions here. Again, I would like to see pineapple find a way to machine a replacement sleeve from a solid piece.