Reeds

[eggsuckindog_]

That would really be great, Al! I've only compared the Boyesen reeds to stock and to CCM reeds. I've always had a hard time getting the Boyesens to last. The CCM reeds have been very durable in my motor and they have picked up a little RPM on my motor when comparing new Boyesens to new CCM reeds.
After they each have a couple of hours of high RPM use however, the Boyesen's performance seems to drop off from wear, chips, or fatigue.
So far, the CCM reeds have been more consistent in performance for me when they've seen similar usage.
I'm interested to see what the TDR reeds will do, as the Mercury guys report very good results with them.
It would be very interesting to see dyno numbers comparing new reeds to each other as well as re-testing them after enduring a few hours of use.
Thanks Al!

I just rebuilt my stock 200 XRi and heard about Chris's reeds on here, called them as just googan on the phone with a stock engine and I can't imagine anybody taking more time to talk with me. I put them in and it purred like a sewing machine and was it so quiet I joked I thought I bought a 4 stroke. Still in breakin time so no WOT - its cold has hell in Fla too, bad enough just getting on plane I think I need gloves.

[genea01]

well guys i have tested the reeds and the reeds was tested 2 diffrent days and once at 11:00 and once at 2:00 on a sat and a sun and the chris carson turned 150rpms top end than the stock and my stock turns more than the hydro tec reeds the test was done 2 diffrent days to see what the average was and there it is guys thank you chris you have a great product, and all 3 reeds was run back to back 2 diffrent days so it would be fair and this is what the results are thanks again chris

[bigbore]

Changes?

[gmacrae]

like is already stated, i think there are too many other variables that make swapping a set of reeds then testing power output kinda pointless... unless you could run a setup that would guarantee a static air/fuel ratio. Some auto ecu's can do that these days - possibly on 2 stroke?

If only there was a flow bench that could simulate the crankcase pulses/conditions - i take it there isnt?

[TDR_50]

There are no flow benchs that I am aware of that can duplicate the pulses.

I rode the Louge in Rotorua a few years back. That was fun.

[Jay Smith]

Can't wait until Tony @ TDR finishes his write up on reed valves... (30 years in the reed business) Gonna be VERY informative, with LOTS to be LEARNED by ALL...

Jay

[powerabout]

There are no flow benchs that I am aware of that can duplicate the pulses.

I rode the Louge in Rotorua a few years back. That was fun.

Dr Blair made one once ( its in an SAE paper) with a rotating drum with a pipe through it so it makes and breaks the reed box as it rotates as there is low pressure on the other side.

I guess it was close to the pulsing as you would get in the lab
I'll see if I can find the paper
I do remember the reeds closed and opened at all rpm's

[racerx]

What good does the reeds do over 10,000rpms?

[powerabout]

lets see someone pull a reed off and run to 10k on a dyno and see if it still makes power?

[ChrisCarsonMarine]

powerabout,Its pretty much common knowledge when you break a reed{same as leaving one out}you slow down...wether you'r turning 6,7,8,9,or 10k plus,no matter,I don't think anyone will argue about that.Anyone who builds ultra high perf motors I believe will tell you the first sign of a broken reed is approx a 1000 rpm loss.Really shouldn't need a dyno test to prove that,,...Reeds not opening and closing at high RPM's in my opinion is right there with the boogy man and the Flat Earth Society,Chris

[gmacrae]

I rode the Louge in Rotorua a few years back. That was fun.

But what about the boiling mud?! you saw the boiling mud right?!? hehe

These days its so tame, years ago when there was only one track it was pretty narly, brutal drop-offs and jumps, massive high speed burms. A few broken limbs and spine injurys later they took out all the good bits and added the scenic/learner tracks - ahhh good bless the '80's

[hydromaniacc]

But what about the boiling mud?! you saw the boiling mud right?!? hehe

These days its so tame, years ago when there was only one track it was pretty narly, brutal drop-offs and jumps, massive high speed burms. A few broken limbs and spine injurys later they took out all the good bits and added the scenic/learner tracks - ahhh good bless the '80's

I remember tubing through a cave with glow worms.Was that in Rotorua? I spent some time in Toranga also. I was down there for a month,what a great place.I need to go back some day.

[powerabout]

powerabout,Its pretty much common knowledge when you break a reed{same as leaving one out}you slow down...wether you'r turning 6,7,8,9,or 10k plus,no matter,I don't think anyone will argue about that.Anyone who builds ultra high perf motors I believe will tell you the first sign of a broken reed is approx a 1000 rpm loss.Really shouldn't need a dyno test to prove that,,...Reeds not opening and closing at high RPM's in my opinion is right there with the boogy man and the Flat Earth Society,Chris

I agree 100%

[gmacrae]

I remember tubing through a cave with glow worms.Was that in Rotorua? I spent some time in Toranga also. I was down there for a month,what a great place.I need to go back some day.

That was probably waitomo, about 1.5hrs drive from here. Yea Tauranga's a cool place - 45mins from here. We've got all the lakes tho

Sorry, back on topic... powerabout - thats interesting. Was it actually made to test reeds?

[genea01]

that is y i tested 2 diffrent days and twice one day and twice the next i wanted it to be even ground and the results was 150rpms for the chris carson reed i do not have a dyno but i tested on the motor with both days and thats how i did it and the results was the same