This Motor Gives me the SAME Thrust to Weight Ratio as a F-35 Fighter Jet...
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- Опубліковано 26 вер 2023
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-Instagram: / judsonbaernt
Brad Roper is the man! He gave me a lot of advice on my new Polini Thor 202. Now at 120 hours in 1.5 years! One thing to know: CHANGE YOUR BATTERY in the GP4 every 50 hours. After that, the temperatures reported are artificially increased by 20-30ºC (68-86ºF). I was freaking out when my coolant temps hit 108ºC (way higher than boiling). But then the battery died (GP4 reboot loop). When I replaced the battery? 70-75ºC for the entire flight. I thought my big ass head and shoulders were messing up the airflow! Nope, all good.
Sorry about losing your throttle on your first flight! That sucks. I always loop the throttle cable over my forearm so the cable is on the inside of my arm at the throttle to try to prevent (or reduce the chances of) the cable from going through the cage/net and into the prop. Not sure if that would have helped you.
I love the Polini Thor 202!!! I weigh 2-3x what you do (265lbs) and 6'4" so I need a lot more power. OK I want a lot more power. And the price is the same as a Moster 185, and the MTBO is 300 hours, vs the Moster's 150 hours. Plus I have found I get WAY better fuel economy, 3-4 liters per hour vs 6 liters per hour on the Moster 185. I think you'll love it for many hours.
Just make sure to feed it premium non-ethanol 93 octane gas! It can be a bit of a pain to find, but after 120 hours, no burned up cylinders.
The throttle linearity doesnt come from it being a float bowl. Its due to it being a slide carb, which are constant velocity/variable volume. Intake air velocity remains constant regardless of throttle position which allows for more ideal fuel/air mixing. As well as a tapered, varying needle to meter fuel more linearly throughout slide position/varying volume. It just so happens that most CV carbs have float bowl fuel demand chambers. As opposed to "butterfly" carbs like the Walbros etc. where intake velocity as well as volume varies depending on throttle position and fuel metering is essentially fixed. Most tend to differentiate the 2 common styles as "diaphragm" and "float bowl". This is improper. They should be differentiated by "slide" vs "butterfly" carb. The type of fuel demand chamber/pump really isnt what differentiates them in terms of performance etc.. Rather its the method in which air/fuel is variated.
9:30 No, it is not your fault that the Macfly netting is loose. It may appear radical yes, but it is likely the most dangerous netting on the market. All other manufacturers do no not only use more dense mesh, but they also tie the strings together at the crossing points so that it is actually a net and the lines can't slip past each other. Macfly just has individual strings attached, which do bend away when object comes to contact. Macfly has certainly made interesting design choices, given that netting has really only one reason to exist: to not let stuff pass through it.
Join the "I break every beautiful new prop due to some unforeseen BS club" I'm the head of
Good video as always Judson! Getting stoked for classes this coming month, so ready to be in the sky
It was great to see you blasting around at EFD last week! I really appreciate you both coming out for a few days. :D
I foot launch the 202 and have treated it well and therefore it has treated me well. I'm burning about 3.3 to 3.5/hr at about 120 kg all up, with a Nuc 22 and Uni 28 respectively, 140 cm prop
1) It's a bit rich from the factory, several have had good luck running 100LL and dropping the main by a lot, start at the middle clip that controls the mid range
2) Change the gear box oil often, I have changed it every 5 hrs since new, I would highly recommend at most 10 hrs, it just gets so dirty being wet clutch
3) I swapped to a Keihin PWK carb and professionally tuned it using a lambda sensor, absolutely smooth from idle to WOT, covers -1000 to 8000 ft density-altitude
4) Get an EGT reader, it's a K-type or get any paramotor display with a thermocouple input
5) Stoichiometric (perfect air fuel ratio) is approximately 700C, hotter is leaner, I run 93 pump gas with boostane to get 100 octane. Also, if you're wayyy too rich it'll read over 700C (excess fuel burning in the exhaust port, heating up the EGT sensor
How easy is it to get parts for the Thor's? Is there a skysportsusa for polinis?
Even with the experience you have there's always room to learn something new, Jud. I was trained by Danielo of Staybad to always wrap your throttle cable around your arm. You definitely need to preach that more in your training. Glad you're safe man.
Hey man a really good tip is to install a bungee cord from the middle of the throttle cable to somewhere on the harness. I snapped it up on one of oglees videos years ago. Doesnt limit your armtravel but makes it impossible for the cable to hit the prop.
Judson you developed so much in short time, I remember when 1st Tucker mentioned you, keep up the good work and attitude mate! your parents must be proud :)
We are! ❤❤
@@glennbgraham Ty for the replay :) Greetings from Croatia!
I would love to see you try a SmartCarb with this. Should give you EFI like fuel burn and smarts without all the electronics.
Put throttle over forearm like ya do on a PAP
Have fun fixing that Polini
Well, welcome to the "tuning" community LOL Judson! I saw Ken's comment below and I agree with him 💯%.That Keihin PWK carb he uses is very similar to the carbs used in the Power sports industry, on ATVs, etc. so it is a champ at working in every angle and can take being slapped around, like on a supercross track for example or catwalking at 12 o'clock and on and on. The Japanese make/use the finest related components IMO. Remember that warm-ups are pretty important with water cooled units, you don't want a cold-seizure to occur. Anyhow, that is a SWEET Macfly... I'll be ordering one from you guys in the near future. I have about 30lbs more to drop... oh, BTW, where's that BUS?? Can't wait to see it when it's done. Hell of a build out from what I saw a month or 2 back on the vid. Ok, I'm done rambling. Be safe and congrats on that upgrade to W/C unit.
Judson something to bate in mind if you do a sat it will draw all the fuel out of the fuel lines and will be a pain in the ass to start so just take it in to consideration also when doing acro keep a little bit of throttle to keep the fuel flowing
Right as you were overtop the wing @ 7:30, chomp! Saw the slack lines too 😬
You are amazing alerning four you macfly the best paramotor
Howzit Judson i fly a 202 out here in South Africa and i fly a 122 Jet at 5500 feat and the same jet at sea level therefore eliminating the need to change jets all the time so it runs slightly rich at altitude but still very responsive and gets full RPM at altitude
Welcome to the dark side!
i was cracking up with the ASMR of the cutting open of the box.
Gracias dtb
If the outer ring is the same size or closer could you put a maverick net on it?
Great video Judson I love you, no hate, but I wish you had done something a little bit more click baity/attention grabby to retain the attention of the new audience you gained from the burning man video. This is your time to do your equivalent of Tucker's "flying to mcdonalds on my paramotor" video. You could bring a lot of new people into the sport.
Just for comparison, nothing else. I am running a 110cc water cooled motor @ 27hp . also it is 10 years old. SKY ENGINE = winning for a decade
Ditto 👍
It'll be cool to put that motor combination with a moustache wing😮😜🤪😄
@JudsonGraham Is that a dirtbike on the back of a semi truck? If so can you somehow get a photo of the setup for me? I drive through that area a couple times a month i go all over the place and looking for a solution to take my bike with me!
It's about to get dynamic 😅
Thanks for winning me $5 in the kiting contest. Sorry about the throttle, bro.
10:14 -> That’s how the pros do it !!
fly products just uses a bungee cord to prevent that from happening? grt vid!
I need one of those shirts xd
Famous Last words. Throttle is so crisp.... snap/break. Ummm ok I am going to land now
Polini's carbs are notoriously crap. You can switch to a smartcarb made specially for this engine and have all the advantages of a fuel injection without all the cons
My buddy uses that on his trike's 303. He likes it. Definitely more fuel efficient with it. Automagically adjusts for conditions. Pretty cool.
How much did that cost
Needs a proper net.
Is there a reason you wouldn’t just shorten the throttle?
Polini throttle cable isn't universal, they probably only had a longer one with the correct termination to work with the throttle slide in the carb.
My 202 has broken in pretty much every conceivable way in 100 hours. I wish i could turn back time to before I spent $1000 on parts and just throw the thing away lol
I did not even get to 100 hours before I got rid of it. What a horrible brand Pollini is.
Send me a shirt? I'm just a state over in WYO!
You want to run a new 2 stroke a little rich for break in hours.
That could of been bad. Glad it didnt go full throttle with no kill. Worst netting ever
That motor needs a micture control............................................
Rather be a hair rich rather than lean
But Lean is Mean. Got to get an EGT or developed carb tuning charts to run near stoich, if not ya go a little rich on the ground and will only get richer as you gain altitude flying too.
I never trusted those nets. I will not join the Macfly hype train.