How To: Properly warm-up your Vittorazi exhaust | AviatorPPG
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- čas přidán 18. 05. 2019
- Properly warming up your paramotor is extremely important. At Aviator, we recommend at least a 3 minute warm-up before you leave the ground to prevent any flash heating or flash cooling of your exhaust which may cause it to crack.
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Hi Eric. I was taught how to fly a year ago by Matt Minyard and he showed me this exact way of warming the motor up for 2-3 minutes before going full throttle and taking off. Bought my moster 185 brand new out of the box and always did and still do this same warm up. My exhaust cracked at exactly 25 hours on it even using this method. I still use the same technique even though it didn’t help the exhaust I do feel its better for all the motor components in general anyway. 55 new hours on the new exhaust and no new cracks yet though. Fingers crossed.
That’s typical of Italian manufacturing. The worst car I’ve owned was a Fiat. Sexy styling, but poor reliability.
Hey Ronnie, what up bro, Dave Danna here, incognito. 131hours on my MY19 and she just cracked out on me today after a 1 hr flight. Biggest factor is VIBRATIONS. Most folks refuse to balance the prop. Also, Rough cruise rpm at 5500 will contribute to VIBRATIONS. Matt can look at your silencer and see it shaking too much on a ground run, he'll lean your low screw a cunt hair and that rough rich shake will be gone. He learned all the tricks at the Factory. I contribute my 131hrs on my Dual start to Matt checking my tuning and my own rule of prop balance every 50 hours or if it comes off for any reason it gets rebalanced. A 125 eprop can be as much at 2 grams split right out the box. Mine was. One blade was 2 grams heavier than the other. After some sanding you can get the grams to match on the digital gram scale then move to the balance beam and get them perfect static balance by adding clear coat spray paint to the lighter blade that won't stay level. Once the blades spin and seesaw out to horizontal you know they are perfect. You'll be amazed how smooth a perfectly balanced prop and a well tuned machine will feel in the air. Had I changed my bronze bushing at 100hours my exhaust would still be good, I'm sure of it. When I took it off tonight the bronze bushing was cracked in half and had migrated its way down the pipe. So the bushing failed and then the pipe cracked. I was lazy in that regard as I had the spare part given to me by Matt 2 years ago for free. Just never bothered with it because I thought I knew better than vittorazi. Change your bushing folks, best case scenario you'll only get 131 hours out of it before it cracks your exhaust when it fails.
Vittorazi has had to know about the exhaust cracking problem for years. How many exhaust have they sold because of the known problem? Never a video like this from them. And, still no separate sacrificial neck part which is where the cracks usually occur. Now you can buy an aftermarket exhaust which solves the problem. I would like to see Vittorazi do the right thing and warranty all future exhaust for life. If they are so confident in their product, they should have no problem doing this. Will they do the right thing? Probably not. A company should not design things to fail by design for a bigger profit!
Thanks for the video. I use a better designed aftermarket exhaust, and so far no problems. If it cracks at the neck now, I just buy a new neck, not a whole new exhaust!
Which aftermarket exhaust did you get?
Playing with the wind... love it. My moster exhaust cracked almost completely in half, had it welded looks ugly but so far shes holding up, thanks for the video.
Thanks for sharing this Eric! Since I have mine (4 springs) beeing doing the same, but even longer, and after almost 50 hours no issues at all with the exhaust! So I can confirm that you do, does work, at least for me.
I was trained by Justin and Alexis back in July ..... He teaches this in the schooling great people! Shout out to #LeadingEdgePPG
I've had two 3 spring exhaust crack. Warm up was 3-4 minutes at idle and then a progressive run up to full rpm for less than 5 seconds. Both exhaust had less than 25 hours on each. Been flying ppg for nearly 10 years and this has been the biggest disappointment I've had in the sport.
Finally, someone saying what needed to be said. How many times I see people starting their motor and instantly throttle all the way up. And then they wonder why they get cracked exhaust, burnt pistons and overall premature engine wear. Thumbs up for the video.
Great video...been flying Vitto since 2012 and can attest the cracking is DEFINITELY avoidable if you watch your shock hearing and cooling.
It needs be said.. "it aint as easy as he makes it look". Thanks for the vid, I like watching you hover.
Eric, another informative video. I absolutely love your videos. What I like about you is that you are honest, sincere, knowledgeable and care about the sport. Hopefully next year I will start my PPG training.
Nice vid, It makes me want a moster almost as much as I want a new wing.
I have a 3 spring Parajet Maverick which I always let warm up at least 3 min and still had the cracked exhaust at 33hrs. This video is good information but it "might" help. The exhaust needs to be redesigned.
Thanks for the video. It was very informative. :)
Great video..hope be up there soon for my intro dual ride..
Important video! Hopefully this greatly reduces the cracked mufflers!
Goog point and well taken. Someday I want to be able to pilot as good as you. 😁
Great control !
Skills. Nice🤙🏻
Mad skills, Brother!!!! Amazing!
My Ros125 has the 2 piece exhaust. No problems. Sounds like these should be a recall and a warranty issue.
Question. I know you love to thermal mid-day. What's the worst wing collapse you've had thermalling? 25%, 50% or ??? Just curious. Love your thermalling video(s)!
It is interesting you had to do this video, as in my training (in the late Jurassic period) my instructor told me to let the engine warm up for 3 or 4 minutes before takeoff....people must just be setting up the wing, starting the motor and taking off full power....which would be tragic for any motor!
You can get any exhaust annealed....go to a casting company near you. it will eliminate all cracking but it may not be very cheap. the cracking is caused by the actual welding of the steel in the first place and it pulls as it cools suddenly )
I did break in yesterday. throttle response was good and progressive from 0 to 5000rpm and from 6000 to 8000rpm, but from 5k to 6k it wasn't progressive. it kept on 5k when I accelerated and after a few seconds it suddenly rised to 6.5k qnd 7k. So I don't know what is going wrong. To me it seems like a carb low neddle adjustment but Im not sure... Any help?
The problem is in manufacture, the welds need to be relieved, the process is to clamp the piece into a jig so it won’t move, then heat it to a temperature so that the molecules in the metal can rearrange themselves, then cool it slowly.
Just need to be added a few heat dissipatour (shields plates) at the must critical hot points and at the coolest points of the exhaust system add some loops of the classic isolation tape.
I noticed the mufflers cracking have a seem length wise along the muffler. I did see a pic of an upgraded muffler in which it seems welded in a ring like method around the muffler. Is there a reason they don't weld all mufflers ring like?
Probably cost
Hi Eric. Question. Never any issues with the AC exhaust. What's the difference and why is the AC exhaust much more reliable? I bought my Nitro 200 E start from you over 3 years, same exhaust today and runs perfect. Warm up time usually around a minute. Thinking about a 2nd motor but don't want to worry about a cracked exhaust..
Robert Swezey the Nitro has an additional coupling in the exhaust which allows it more room to move. We’ve had SIGNIFICANTLY less issues with the Moster than we had with the Nitro though. The exhaust is annoying, but much less “other” failures.
I know an engine designer that says the revs need to be raised quickly during warm up as more revs = more fuel = more oil. Extended idling with little lubrication would seem to be a very bad thing for the engine. It's a shame that an exhaust design fault requires a specific warm up technique. Comments?
2 stroke engine designer?
After 3 minutes idle you went full throttle. Have you any idea of the temperature difference between idle and full throttle? To avoid thermal shock you need to increase throttle GRADUALLY and SLOWLY.
"Hi! We're the experts, and we'll show you the way we warm up our motors to avoid cracking the exhaust. This works!"
CZcams Comment: "RRREEEEEE!!! You're WRRRONNNGGG!!!" ;)
Rapid thermal expansion and contraction ('shock', as you call it) is what is probably cracking the exhaust pipes. So the pipes can't take the temperature delta between full cold and max power at some period below their three minute period. After three minutes, the temperature delta between idle and max power obviously is within the range that the pipes can safely handle. This would mean things are 'fine'.
Man, you look good with that N-Volo helmet. I was hoping I would win that one Tucker was giving away. I have one coming from Chad Bastian. Then you'll read about me in the newspaper.
I think my P.AP. has 4 springs on the exhaust. I'll remember this advice. You'll have to discard that picture on your phone of a cracked exhaust on a coffee mug, Eric, since we aren't going to have any more problems with that. What is with this flying at 2:00 in the afternoon? I wish I could do that! Great video.
Why can't you fly at 2pm?
Most paramotor pilots don't fly midday because of the updraft thermals generated by the asphalt, shingle roofs, etc. You can fly midday, but, you will likely have a rough ride. Most (including me) fly early in the morning or later in the afternoon after those midday thermals have passed.
@@lvsqcsl Cool thought so? I've done 7 months PG and i think the bumps shouldn't be so bad for me? Although the last flight i had a couple sundays ago was way more than i like, ragdoll comes to mind! LOL I just had to get down ASAP and was glad to be on the ground!!! My Parajet Mavric sport is coming tomorrow hopefully? Can't wait to get PPGing!! Thanks for your reply!!
@MrCoolcool666 congrats on the Maverick! Definitely ragdoll on some of my flights as well! Good luck!
@@lvsqcsl Thanks man you too! I just ordered a Dudek universal 1.1 28 To learn on rather than using my epsilon 9 with hybrid risers, fly safe! And have fun I know i will!!
I am complete newbie and posting for information/knowledge. Why is it that certain manufactures have trouble with exhaust cracking and some do not. One would think the problem prone paramotor companies would peek at the design of the others that are not having issues and use a similar design or material to stop the issue. I know there are some like the Simonini engines that have no cracking issues, am am sure there are several others that don't. Is it the material that is being used, the mountings? If you think about it, a two cycle dirt bike encounters a ton more abuse than these paramotors. They haul butt for a mile full throttle, go through water up to their knees, back into the dirt, jumps, crashes etc.... Why does their exhaust not have the elevated incidence of cracking? Just wanted to put some thoughts to ponder out there. I have no brand loyalty or wanting to tout any specific company or brand, we all enjoy flying these things, and for the most part, all are the exact same thing. Drop me some thoughts and ideas, I am here to learn.
Thin walled exhaust on paramotors to keep the weight down. Dirt bikes have heavy pipes as compared to ours.
Well... Now I know why I've never had a problem after 150+ hours. I always warm up my motor first.
Edit: My only issue has been an oil leak at the header, that I can't get rid of no matter what I try.
Better oil than piston ring pieces. I live with mine too - rag spanner fixes it...
Where are the other 75k subscribers!?
James Campbell I’m just so glad you’re here! ;)
Lol! Nicely done.
springs have nothing to do with metallurgy. metal failure on an exhaust is simply the result of inferior materials. warm-ups are for the oil, pistons and cylinder walls. this extended warm up is a corporate band aid. three minute warm up, on tiny, air cooled, two stroke engine, that is already under a prop load when ice cold? good luck with that!
Gas it immediately? Roger Roger boss 🤣
Rule #1 with owning a Moster... do what Justin Fox says.
Cant say I ever had exhaust problems on my freshbreeze
Here...watch how I make this piece of shit not break....lmao