Reading this on the journey back to WY.
Pics look good.
Can you fill in some details on the air cylinder such as what type, dimensions and supplier?
Did you find that some springs had too much or too little tension?
Keep us updated on how things progress!
:Cheer:
First off I have to Thank
aborgardt from Cummins forum for helping me come up with this design, and for answering what im sure were many anoying questions ! thanks agian !
now,
Sorry for the Long delay, ive been VERY busy, anyhow I just got the turbo installed tonight, it took awhile Playing with differant springs and combonations of springs to get them to pull the arm back to exactly where I wanted it, I do not have my Turbo to Exhaust Elbow (it will be here tomorrow), but dont think for a second that stopped me from taken her down the road for a test drive !
it was a little loud, but, man oh man, this thing was well worth the constant thinking, night after night after night, it works PERFECTLY ( so far ) after a few slow starts and warm up time I punched it, couldnt get boost to go past 30Psi, didnt look at the Egt gauge, Couldnt get past watching the boost needle shoot up so fast ! at idle im roughly hitting 1-1.5 psi of boost, keep in mind besides a cold air intake, my truck is 100% stock, depending on mods your results may differ, and this was only about a 20 minute road test but initial findings are very promising,
to answer your questisons the actuator is an Ingersol Rand (think thats how its spelled) I got it from Grainger on clearance for $16, it is a 2 way actuator, roughly 6" long with a 4" stoke, you dont need one with that long of a stroke but I thought for the price why not, i went with the 2 way function to allow me to be able to engage the EB once I get onboard air hooked up, which should be in the next few weeks once i sit down and write out a parts list, now for the springs. . . . . some who read this may laugh, others might say, HA! no way, but they are actually "Tremalo" springs normally used for an electric guitar, the reason I went in that direction is simple, after buying ALOT of springs, I couldnt get the right tension I desired, after discussing the progress/issues i was having with a few buddies at work, one of them ( a HUGE music guy ) said you know what might work for you, Tremalo Springs, they are very strong and are ment to last for years under tension without failing, and there fairly Cheap !
off to guitar center I went !, got 6 springs, 3 of two differant brands for $12,
got home and started drilling and testing, depending on the length you stretch the springs (as with any spring) it increases or decreases the tension, so i dont know the exact tension, but these springs are designed to be under differant levels of stress for long periods and not loose there tension, I guess only time/ climate / and ohio's salty winters will determine how long theyll actually last, oh just an FYI my first "bracket" had to be scraped due to the amount of holes that were drilled in it, it was alot of trial and error, i used my air compressor with a regulator to "dial" in the actuators movement but hey time well spent after tonight, it got me to a combination that I am very happy with and seems to be just what im looking for. I will post pictures on here very soon, they are of the Final version of the bracket, and of the turbo actually installed in the truck, its kind of hard to see because I have the intake on, but it was a pain in the but to get it in there just right so i didnt want to move it unless i HAVE to, you will also see i wrapped a little insulation wrap on the intake, it is a VERY TIGHT fit between my contraption and the exhaust manifold and i didnt want the inlet air to get super heated.
you will see in the pictures, I have two springs holding resistance on the actuator opening, two reasons for this, it took two springs to get the arm to reset where i wanted it to be at idle, and for a kind of fail safe (in theory)
if for some reason one of the springs lets loose from the arm, or breaks, the
2nd spring will keep enough resistance to not completly open the vains cause me to loose boost, who know where ill be or what ill be doing if and when one of those little guys decides to let go, just the Aircraft tech in me coming out i like back up systems, another thought that just hit me, is it keeps spreads the full load over two springs instead of one thus prolonging its life, hopefully,either way I have extra spings i will carry with me at all times, which brings up another very nice thing about this set up is accessability, I can very easily remove the fender liner and change springs, or change tension points within minutes, what you dont see in the picture is a splash gaurd/sheild I am rigging up to protect the components from the elements water,mud,sticks,rocks you name it,
well its getting a little late well late for me, and i cannot remember what i have said and what i havent:blahblah1:, if you have any questions at all please let me know ! ill do my best to answer them, and share my experiance
oh by the way, it will be hauling a load in three days , small load 4K lbs but hey no need to jump in with both feet right off the bat,