Chris Carson Reed Chatter

[Jpott]

Hello,

I just finished assembling the reed assemblies on my 210 Sportjet motor. I put Chris Carson Reeds and stuffers in. I used the existing cages (rubber was good and flat, no cracks). When i tightened up the reed assemblies (using the stock reed stoppers, i noticed a very small amount of gap between the tip of the reeds and the cage. I did not over-torque them. I used locktite blue and snugged them down.

When i spin the motor over by hand, I noticed a small amount of chatter. I assume that this will go away once i use the starter/its running.

Thoughts?

Thanks, Jason

[Glastron1987]

I've done several reed replacements and never remember space after tightening them down.

[David]

My reeds have never said a word

[LakeFever]

The rubber swells a bit over the years most likely from ethanol laced fuels or other additives is my guess. When i swapped TDR reeds into mine I could also see daylight between the reed and the block. I blocked them down and now they are light tight so to speak. See this thread for pics

https://www.screamandfly.com/showthr...istakes!/page6

[skialot2]

Sounds like you need to sand the Reed blocks flat. Boyeson says to lay a piece of sandpaper on a flat piece of glass. Rub gently until flat. Start with 220. Finish with 400.

[ChrisCarsonMarine]

Standing open a few thousandths is not a problem,as long as they will close with a gentle touch of your finger.Realize that the reeds open and close about 15 times a second at idle,and only go faster from there,they will land on the cage and quickly crankcase pressure keeps them closed,Chris

[skialot2]

I checked the manual. As per Mercury, reed block stand open is .020 Max

[Chaz]

When I get a set of reeds from Chris, they come in a nice plastic case. When I open the case I notice they have two small rubber bands holding them together. My first clue that they are all flat is when I cut the bands off, they continue to lay in a flat stack ... just like when they had the rubber bands on them.

I usually assemble reed cages on a piece of flat marble that sits next to my safety clean machine. As single leaf's, they also lay flat.

Now if I assembled a reed block and the reeds had any air gap .. would I think :

A) there was a problem with the reed

B) I had a warped azz block

Chaz = thinkin, Carson offer's the best tech support in the industry ..

[Jpott]

Thank you for all the help. I took some time and decided to take these apart and really take a look at what was going on.

First I looked at all the surfaces, and played with the reeds on the cage by gently squeezing where the stop plat attaches. I found that there was a small amount of rock on most of them. I decided to get back to the sandpaper and flatten this out. I started with 400 soaked in oil and finished with 600 grit. I watched a couple of videos of people doing it and followed with the small circles figure 8 patterns. Once I did this, I could immediately see a difference. I then assembled all the reeds with blue locktite and tightened the screws down. I have to admit, it was a little lighter than the original torque i did.

I found that if I did the outer screws first and went all the way till the lockwasher was flat, then did the same for the inner two.... Afterwards I did a final snug of all. I would say it was about 1/8 of a turn more. They still felt looser than I would like but from everything I see, they don't need to be that super tight.

Am I wrong here?

[ChrisCarsonMarine]

You’re good, Chris