Planebender Products Proudly announces our newest "Pilot Of The Month" Randy Hinton Or "Spats" here on FG. Check out his interesting story here www.planebenderproducts.com

Thanks Randy!!!

Planebender

Thank god you got rid of that ugly mug you had on there! Finally, someone NOT driving traffic away from the site!

Sorry I've been asleep at the wheel. Thanks Adam!

Planebender

"Dude.... go with the flow"

he he he he

Hey Mike, Did you get your 3W running good? Want to make sure you are going to make the Lodi Huckfest!

Planebender

Originally Posted by planebender

Hey Mike, Did you get your 3W running good? Want to make sure you are going to make the Lodi Huckfest!

Planebender

What the bender said

Originally Posted by planebender

Planebender Products Proudly announces our newest "Pilot Of The Month" Randy Hinton Or "Spats" here on FG. Check out his interesting story here www.planebenderproducts.com

Thanks Randy!!!

Planebender

Ata boy Spats! Looking good and you have developed quite a hanger of nice planes.

Dave, I'm considering pipes for my 40% Extra GP176, are there smoothpipes coming?

Hi Rick, Always a pleasure to hear from you. YES! Be patient young Grasshopper. Totally swamped till after November 15th. Very soon!

Planebender

Hey Dave, can you explain on what to expect from these Large Smooth Pipes?

thanks, BV

Hi Bill, I can't comment on the exact power gain until testing is completed but I think 350-500 RPM is the target power gain with a smooth transition.

Planebender

That's great news Dave! I'm in no hurry, I'll wait. Really enjoying the 104 Slick with the 120 on pro-flows, it's awesome!

Thanks Rick!, I will for sure be bringing a bunch to Nall.

Planebender

OK. This may not be an appropriate place to ask this but here goes:

I have a brand new (4 gallons through it now) DA 120/Pro Flow combination that is giving me fits. I cannot get rid of SEVERE RPM HUNTING right around 1/3 to 1/2 throttle (hard to tell the actual carb position because of the throttle curve). In this throttle range the RPM fluctuates severely. It is unusable.

When I talked to DA about it their reply was "If you are running any canister exhaust you will have this issue. You cannot get rid of it; only reduce it."

They suggested 4 things:
-change to a standard (non-canister) muffler system
-put a larger prop on it (I'm running a Falcon 29x9 C.F. prop)
-SHORTEN THE HEADER LENGTH
-try a snorkle on the carb

They went on to say that KS canisters minimize this RPM hunting (bit do not eliminate it).

HELP!!!!

When measuring the header length (recommended to be 11" for this engine/canister combo) do you cut the header to exactly 11"; knowing that there will be an additional 1/4" in total length because you don't want the header touching the canister....so you will allow about a 1/4" gap in the coupler area.....or do you allow for this and actually cut the header to 10 3/4" or so....

I was appalled when DA stated that you cannot eliminate the RPM hunting when using canisters. I have followed this thread and found no reference to anyone having this issue. Indeed, the many positive comments on this thread was the main reason I elected to go with this engine/canister combo.

DA was good enough to send me a new carb, but this did not help the RPM fluctuation at all.

Yes I have tried adjusting the needles. Nothing seems to help.

Thanks for any input. I am pretty upset as this engine is quickly becoming a very expensive paper weight.....totally useless for me.

Jim

Have you tried a different throttle servo?

Also you may want to get rid of the throttle curve,,, its not needed when running proflows.