Four chronos, one airsoft replica: Will the Joules / FPS be the same? UFC, Acetech, Xcortech

[@Rick_Makes]

I've noticed that how clean the chrono is inside and the battery voltage can affect the reading too. I have an old madbull chrono that's probably 15+ years old and a lot of people complained they weren't accurate but regularly cleaning any dust from the inside and wiring it up for an external power supply has made mine very consistent. You made a very good point at the end though. It's better to be under the limits by a little than try and be exactly on the limit and risk the field chrono reading your replica as too powerful. It's probably a good thing if field chronos read a little high too. It means there's less chance of someone using something too powerful on the day.

[@rummbolt]

@@Rick_Makes thank you for your detailed comment, good sir! I never thought about cleaning the Chronograph, so i will try it soon. Curious how this will affect the readings. Have a good one!

[@OrangebananaHD]

Your style of video is so well thought out! I subscribed while looking for the noveritsch anti fog unit but came back for this interesting piece :). I would love to see you take a gander at what different types of lenghts barrel's do or maybe hop up buckings with your style of analytic video's :^) (I know they have been done before but I feel like with your preciseness we would actually get some results out of it!)

[@rummbolt]

Hey bro, thanks for your comment and the kind words! A barrel or hopup comparison video requires good weather with no wind and a place to test on wide ranges for a longer time, as i would have to do a lot of tech work in between. The idea is nice, and i would also love to see the results myself. Maybe in my next vacation :) Have a good weekend!

[@OrangebananaHD]

@@rummbolt do you have anyway people can support you? If you do start doing such projects I believe you should get payed for it as it seems like a money sink plus alot of time/work :-) even though airsoft as a whole is exactly that with the occasional fun skirm session ;)

[@rummbolt]

@@OrangebananaHD I take KZbin primarily as a hobby, but you´re right, the videos (recording, editing, spreading etc.) can be a lot of work. I like to offer it for free as a (hopefully :D) helpful service to the community - but if you like to support, I really appreciate any donation via the "Thanks"-Function here on KZbin. Thanks for even considering this

[@tatkoairsoft2146]

Very nicely done. This is the exact reason why beeing on the limit can be risky, if you do not have easy access to the spring/regulator/npas. having 0.2J lower power then field limits have very minimal impact on the game itsef and saves time during chronoing. In the end, what ever chrono the site have, that one is the "source of thruth". Having 0.1J leeway is acceptable from my point if view and is much less impactful then actual incorrect chronoing practices - measuring just with 0.2g, with hop up off and similar. These incorrect practices can impact in game power much much more then allowing someone to be 0.1J over the site limit.

[@rummbolt]

Absolutely - i really hope this topic will get more awareness, especially for field hosts. Thank you for commenting and that way helping to spread it :)

[@AirsoftTipsandReviews]

Exelent video and topic! One more point that can cause different readings on the same chrono: where are you shooting through it. If you're in the sun (or shooting "toward" the sun) you'll get a different reading from a testing location that's completlly in the shade.

[@rummbolt]

Thank you for your nice comment :) Indeed, i also experienced slightly different readings in the sunlight vs. in artificial light during the evenign time for example. Thanks for adding this tipp :) Have a good one!

[@Fat_]

The angle of bb going through the 2 sensors also make a difference result Ideally you should chrono the replica perpendicular to the chronograph, if you angle a bit the replica, the reading will decrease

[@rummbolt]

Sounds absolutely reasonable, yes! I tried to do it the same way and angle as good as possible during the test. Thanks for adding this information :)

[@Fat_]

​@@rummboltI believe the reason behind why each chronograph have different readings is the assemble process, they use the same program in their chrono but through the assembly, length between the sensors may not the same, resulting different outcome (E.g. Program set distance between 2 sensors is 1, but in chrono 1 the sensors distancing can actually be 1.1 and chrono 2 can be 1.2)

[@rummbolt]

@@Fat_ Absolutely. And when you consider the most likely huge tolerances in the assembly process, you get one more variable - even on the same models

[@raimondsindo1428]

I have also noticed that the Acetech shows more than the UFC, which of course is in my favor, since I use the Acetech6000 myself and have no problem adjusting the HPA to the maximum limit. 😁

[@rummbolt]

That's good for you, I guess :D But be aware, also different Acetechs could show different readings, even if they're the same model. Have a good one!

[@christofferthorsson6769]

Nice video. Thanks!

[@rummbolt]

You´re welcome - thanks for your kinds words

[@OrangebananaHD]

Thank you for producing interesting content :)

[@rummbolt]

Wow, I´m speachless! You just gave me the first Thanks / donation in my KZbin career!!! Can not express how thankful I am, I probably will never forget this! Gave you a humble sub back in return :) Thank you very much, and have a great afternoon!

[@Acemans]

very interesting, i have the acetech and always wondered why it seems to shoot lower at the field than when im home

[@rummbolt]

It´s a nice chrono - but I´m sure when you but three of those against each other, each one will tell you slightly different output measurements as well. Those chronos are basically all china made and suffer from low quality control standards - i think this is why they have such a high deviation. Have a good one!

[@JanderGrosse]

Sehr interessant. Ich habe den AC5000 und dann einen Tracer mit Chrono Funktion. Beide zeigen bei mir die Identischen werte an. Aber ich habe es auch schon beobachtet das auf den Spielfeldern andere werte gezeigt werden.

[@rummbolt]

Klingt als hättest du zwei Chroni erwischt die (mehr oder weniger) zufällig die gleichen Werte anzeigen. Ist ja ansich eine super Sache, dann musst du dich nicht entscheiden welchem Chrono du jetzt glaubst, haha :P Schönen Wochenstart!

[@reddyskullz]

ach witzig :D wie klein die Welt einfach ist. Wir sind ja tatsächlich in deinem Video! Ehre sowie Abo geht raus! :)

[@rummbolt]

Jau, insbesondere euer Minigun-Spieler hat natürlich einen sehr hohen Wiedererkennungswert. Der musste einfach rein :P Vielen Dank fürs Abo & bis bald auf dem Feld :)

[@bazairsoft]

This is why I wish we had sites get their chronos calibrated. The fact you can tell someone to not use their pew they worked hard to pay for during a day they have already paid for is silly to me if the chrono reads slitely over. You can have a perfectly okay pew but a site says otherwise.

[@rummbolt]

@@bazairsoft Yep, but even if they calibrate, your chrono at home can tell different readings. So bringing own chrono to the field maybe would be an idea, right?

[@bazairsoft]

@@rummbolt Yeah maybe, when I set up I use a mates chrono that always reads hotter than the site's so I know I'm not holding up the line when I go. I think it would be a good idea to allow other people to use theirs but I can just see people abusing it by somehow reducing the readings on theirs. I think calibration of site chronos will always be "the best solution" but not always most practiced (cost). Just like how no sites weigh the BB you just used 🙄

[@rummbolt]

@@bazairsoft true. As a compromise, it might be the most efficient solution. However, i never saw or heard of chronos being calibrated here in germany. Even if the fields use two or more different chronos if their own, I have experienced some good deviation 😅

[@bazairsoft]

@@rummbolt Hahah yeah, they dont get calibrated here too! Just wish they did 🤣

[@JanTchi]

That's why I have 2 chronos and testing on both of them. Results are always different.

[@rummbolt]

Yep, good way to handle it! It also helps to "know" wether your chrono performs more like on the "higher" or "lower" end, so you have some kind of reference to the average chrono outputs on your replicas :)

[@MikeHuntsPews]

Just got my pew going mint and only 1 fps under (on my crono) for what my field limit is for blue tag=no MED. Was trying to get more under then that 😂. Oh well will see what there’s says next time I’m there.

[@rummbolt]

Yeah it´s always a little gamble...keeping things interesting :D :D

[@arnjhon]

now that we are no longer measuring by speed. Are we not using the wrong method to measure? Should we not switch to an impact based measuring device? I don't know of any such device that would be sufficient for airsoft use, but I think it would be a better way to measure Joules...

[@rummbolt]

I think there would be several questions to follow... Are such devices available for airsoft? What would be the correct distance to measure the impact? How to manage the huge switch between the very common "old" chronos and the new gadgets, as almost Nobody got such an impact device? In my opinion, such a Change would take years - but the idea is interesting of course. Have a good one!

[@darkshock42mlg05]

I'm going to call Paul Herral for this. Chronographs don't always agree with each other and things like lighting and humidity can affect the readings.

[@rummbolt]

Agree with that in terms of light conditions. The humidity theory is new to me, but surely also could be a possible part of the explaination :)

[@dksoldierdk]

I have seen some older chronos set to 5.95/5.99 BB diameter. This messes with the math and gives slightly different results.

[@rummbolt]

A very important addition!! Thank you, completely missed that part in the video. Thanks, man!

[@MartinJHarris]

This has happened to me with my DMR build

[@rummbolt]

Thanks for sharing your experience - it´s obvious I´m not the only one who saw this things happen on different chronographs :)

[@MrGreenLMG]

This is why any field that has a 0.00J +/- tolerance is a joke. 0.1J difference won't matter during the game.

[@rummbolt]

@@MrGreenLMG yep, 100%! Have a good one!

[@alexandermanley1695]

I think this issue might have caused my rif to be classed as hot at a game last week. It's recently been sorted by a tec and was running perfectly at the previous game days. I thought it was my fault for moving up to heavier bbs, but I remember using two different chronos at the same site previously and I failed the first, but passed the second. Will test it against mine again tomorrow and and a friend's and try and work out the difference in joules, instead of just looking at fps. Would you ever recommend taking a chrono to a game site and testing it yourself just before trying theirs? Thanks for the vid!

[@rummbolt]

Joules is always a combination of BB weight and BB Speed, FPS is only the speed. Thats why Joules in my opinion is the more usefull variable to focus on :) However, i take a chrono with me every gameday, yes. Be it if i need to make short term adjustments or just to borrow it to a friend - it comes in handy very often. Have a good one!

[@alexandermanley1695]

Ah brilliant, thanks for the reply. Will definitely start doing this.

[@rummbolt]

@@alexandermanley1695 Have fun on the field :)

[@Sylcatam]

@@rummbolt There are some fields where I live that actually allow you to use your own chrono if your gun is shooting hot. Because the awareness is already there that there might be some deviation between brands and chrono's. But I'd rather stay safe and be 0.1J below the limit since playing with gbb depending on the weather joule creep can be an issue.

[@rummbolt]

@@Sylcatam oh wow , never heard of this solution before. I like it! Good idea for some field owners here in Germany:)

[@AirsoftbyTNTGermany]

Yeah 1000 Abonnenten. Nice🎉

[@rummbolt]

@@AirsoftbyTNTGermany Vielen Dank für eure Glückwünsche, freue mich sehr ☺️☺️ Liebe Grüße!

[@DaimySchrijver]

This is what I'm always scared of with my AEG. My local field will not even accept a 0.01j deviation 😬

[@rummbolt]

I completely get what you mean. Especially on commercial fields, i experienced the marshalls being veery strict on energy limits. Thats why I made this video, to raise awareness that there is no 100% exact measurement with those kind of chronos - and to prepare everyone for potential problems that could result from it. Good thing: Only a little less energy on your replica than allowed max. can help to avoid problems on the field (e.g. 0.1 J less). Have a good one!

[@DaimySchrijver]

@@rummbolt a rental is €30 euros per day 🤡

[@rummbolt]

@@DaimySchrijver yeeaah had the same two months ago. Had to rent a backup pistol because mine was 0.1J too high. Only 10€ luckily, but i never used this crappy thing the entire day -.-

[@dainiusmatutis427]

And if you make with 1,4j is diferent it will be diferent with 3j. Guns i have markt that some off chronograth has lower messurment if j is high. Soo long you have 4 chronomyou could test it.

[@rummbolt]

Thats very interesting, thanks for your information! Unfortunately, I don´t have both all the chronos anymore as well as a replica with 3 joules, so I´m afraid I can not test this at the moment. But also good to read about this for other users! Have a good one!

[@AggressiveForce]

Wir waren an dem Spieltag auch da und waren über die wirren chrono Werte überrascht. Ich zb habe zuhause mit einem AC6000 genau 1,5 gechront und der Betreiber hatte 1,44 joul. Alle hatten komische Werte muss man dazu sagen 😅

[@rummbolt]

Ja, ich erlebe es immer wieder. Nicht nur in Weeze, praktisch auf allen Feldern. Daher die Idee für das Video. Meine Primary war am Sonntag auch rund 0,1J stärker als zuhause gemessen - zum Glück durfte sie trotzdem aufs Feld.

[@AggressiveForce]

@@rummbolt wäre mal interessant zu wissen was der Linke chrono für Werte "ausgespuckt" hätte. Ich war an dem rechten chrono.

[@rummbolt]

@@AggressiveForce Ich war auch am rechten. Aber der Vergleich wäre echt mal sehenswert gewesen :)

[@macky89]

This video needs to be watched by the players that constantly chase figures. HPA player are the worst for using a site chrono to try and get their power to the limit playing with dials before getting it locked off.

[@rummbolt]

Thank you, feel free to share the video to every HPA player out there :P Have a good one!

[@Corvus241]

Interessantes Thema. Zu Hause hab ich meine MTW mit 0,36 mit einem AC auf 1,9 Joule gechront. Als ich bei der Beerzone beim Chronen war sagte mir die Aufsicht“ Glückwunsch du bist genau 0,01 drunter und das gleichbleibend. Sowas kann schon bitter ausgehen wenn man dann nicht teilnehmen darf.

[@rummbolt]

Jaa auf jeden Fall. Manche Feldbetreiber nutzen das leider auch aus, indem sie dir selbst bei einer minimalen Überschreitung der Joule-Grenzen horrend teure Leihwaffen "aufzwingen", die man dann meist natürlich nimmt, weil man nicht wieder nach Hause fahren will. Ich nenne hier bewusst mal keine Feldnamen, aber gebe es gerne mal als Denkanstoß für alle Betreiber, die sich angesprochen fühlen :)

[@Corvus241]

@@rummbolt Das gute bei ner HPA ist ja das du das noch einstellen kannst. Warum? Kannst doch Ross und Reiter benennen. Ich bin fein damit😉

[@tomschu6638]

@@Corvus241 Dieb oder Radlertrinker?

[@battosai823]

Genau deshalb HPA!!! Bisschen links oder rechts drehen 😅

[@rummbolt]

@@battosai823 ich sag mal so, mit nem guten Federschnellwechsel-System geht das aber auch echt schnell :) auch wenn hpa natürlich komfortabler ist ☺️

[@moorusfaan5464]

So many plate carriers sitting low...