El Pirata
RCTalk VIP
As I was waiting for my Sirio Monster .27's to arrive to power my Kanai twins I began researching a custom pipe for these monsters. I mean most people out there buy a .25, .26 or higher engine and slap a .21 pipe on them because there is nothing really available to fit something larger than a 21. After a thorough search the only pipes I was able to find wer mostly fits .21/.27 engine pipes.
I was kind of backed into a corner I am not a scientist here but I know a ton about 2 stroke exhausts. The very thought that a .21 exhaust would work equally as well in a .27 pretty much is complete rubbish. While I am not saying that this will not work nor that it will not work well but you'll be literally wasting energy of the engine by using a mismatched pipe.
With this in my thoughts I discussed this subject thoroughly with several members, bash buddies and also Rick Ritter who makes custom pipes for T-Maxx's, Savages and racing quads. With variables like shockwaves, internal/external ports, reflection and a ton of other things going on each and every time an engine fires you really need something that is matched to your particular engine's signature.
Having raced outboard hydroplanes in my teenage years I learned a little about tuning exhausts while underway thus changing the shape of the whole internal size of the pipe to accomodate different rpms of the engine while running at different speeds. While this is still on the back burner as knowing how we did it back then and the fact that this is a new approach to rc pipes, well not new but not race legal for pipes to have moving parts.
Error gave me a pipe from a .46 helo. The thing was super long but the more we discussed the options the more and more feasable it was becoming to modifying it to fit one of my monsters. First we cut ½" off the pipe's stinger. Next we plugged the stock stinger, threaded and used it as a securement point on my K1.
Next I cut off about 1" off the coupler end of the pipe, removed the nipple in then pics then milled away the excess remaining inside the pipe so the exhaust would flow more freely.
Now both ends of the pipe were mostly finished but since the exhaust no longer had a stinger we had to make a new one. Error drilled out the side of the pipe, fitted and attached a new stinger.
Here's the mounted pipe on my K-1 after initial testing.
Our first impressions of our creation, hmmmm, how do words put this... Error's first words were, "You were using the 20% I gave you?" We'll both post more on this subject later.
Our first testing session will be posted in a video tonight....
****hint, hint, nudge, nudge, ERROR, BACK TO WORK!!!!****
I was kind of backed into a corner I am not a scientist here but I know a ton about 2 stroke exhausts. The very thought that a .21 exhaust would work equally as well in a .27 pretty much is complete rubbish. While I am not saying that this will not work nor that it will not work well but you'll be literally wasting energy of the engine by using a mismatched pipe.
With this in my thoughts I discussed this subject thoroughly with several members, bash buddies and also Rick Ritter who makes custom pipes for T-Maxx's, Savages and racing quads. With variables like shockwaves, internal/external ports, reflection and a ton of other things going on each and every time an engine fires you really need something that is matched to your particular engine's signature.
Having raced outboard hydroplanes in my teenage years I learned a little about tuning exhausts while underway thus changing the shape of the whole internal size of the pipe to accomodate different rpms of the engine while running at different speeds. While this is still on the back burner as knowing how we did it back then and the fact that this is a new approach to rc pipes, well not new but not race legal for pipes to have moving parts.
Error gave me a pipe from a .46 helo. The thing was super long but the more we discussed the options the more and more feasable it was becoming to modifying it to fit one of my monsters. First we cut ½" off the pipe's stinger. Next we plugged the stock stinger, threaded and used it as a securement point on my K1.
Next I cut off about 1" off the coupler end of the pipe, removed the nipple in then pics then milled away the excess remaining inside the pipe so the exhaust would flow more freely.
Now both ends of the pipe were mostly finished but since the exhaust no longer had a stinger we had to make a new one. Error drilled out the side of the pipe, fitted and attached a new stinger.
Here's the mounted pipe on my K-1 after initial testing.
Our first impressions of our creation, hmmmm, how do words put this... Error's first words were, "You were using the 20% I gave you?" We'll both post more on this subject later.
Our first testing session will be posted in a video tonight....
****hint, hint, nudge, nudge, ERROR, BACK TO WORK!!!!****
uke: i found it...
