galactica Posted July 13, 2009 Report Share Posted July 13, 2009 Myself and a few chums have been collating our experiences with Madbull chronos (the blue aluminium ones)...and we think there's something up. Namely, our guns appear to be doing about 30fps less than they do with other chronos, like a guarder or combro. Have YOU experienced an odd chrono reading at a site with a blue Madbull chrono? Link to post Share on other sites
L4byr1nth Posted July 13, 2009 Report Share Posted July 13, 2009 I've heard people say that Madbull chronos don't give the same reading as others. Haven't experienced it myself, though. Ben. Link to post Share on other sites
shmook Posted July 13, 2009 Report Share Posted July 13, 2009 the one at my site gives funny readings too... Link to post Share on other sites
Philbucknall Posted July 13, 2009 Report Share Posted July 13, 2009 I have found a lot of chronos give vastly differing results. We use guarder chronos at the site i help run and they are always different to my combro chrono readings. As a site though, we go from the main one so at least if everyones guns are out it is by the same amount oficially. TBH without having them calibrated properly, there is a huge scope for error with these things. Link to post Share on other sites
Rob15 Posted July 13, 2009 Report Share Posted July 13, 2009 ICS MP5 SD3 (Modified) on a Madbull chrono at SYA Proteus read out 225fps, my X-Cortech chrono said 265fps. The range it was doing that day certainly didn't relfect the reading of the Madbull chrono. Classic Army G3 SG1 (Stock gearbox) also at SYA read 291fps on their chrono whereas mine said about 320. My X-Chortech chrono has been tested against a Guarder chrono at SYA and F&O and also against some Big Dragon metal chronos i got not long ago and all of those have given very similar readings whereas the Madbull one SYA have has read out around 30fps under for the guns i have chronoed there. It also reads out 280fps with a stock TM AEG, so i'm inclined to say my chrono is calibrated correctly. Link to post Share on other sites
The General Posted July 13, 2009 Report Share Posted July 13, 2009 At the two sites I attend I get 10-12 fps difference in the readings solidly. Hop off and on. Considering how important 10 fps is when you are running close to 328 or 350 depending on the site! I upgraded my TM P90 with the Hurricane M100 kit. M100 spring, bearing piston head, bearing spring guide, new nozzel. Well fitted and I get 306-307 fps hop off. I know the other chrono will give me 317 from experience, which is more in line with the 320-330 I was hoping for. I might as well fit a brass cylinder head I have for it but never got around to using for some reason. Possibly go to an M110 spring. Link to post Share on other sites
scorch Posted July 13, 2009 Report Share Posted July 13, 2009 Hmmm... Might explain why my sniper rifle is doing "less" than it should given whats in it. Link to post Share on other sites
Permian Posted July 13, 2009 Report Share Posted July 13, 2009 I know that their V1 and V2 chronos tend to give totally different readings - as much as 10% I've always found Guarder Chronos to be spot on, but Madbull ones seem to be more robust. Link to post Share on other sites
Reincarnation... Posted July 13, 2009 Report Share Posted July 13, 2009 Multiple aegs, for some reason all the gun shot 330fps +/- 3fps. Link to post Share on other sites
Kipper Posted July 13, 2009 Report Share Posted July 13, 2009 We had this problem at PR. The chrono at the dessie regen was reading 370 fps on this blokes gun, the in game chrono was reading 340. Both the blue madbull ones. Link to post Share on other sites
renegadecow Posted July 13, 2009 Report Share Posted July 13, 2009 The marshal at where I play adds 15 fps on readings through his black Madbull chrono. This was supposedly the margin of error calibrated against his F1 Chrony. Link to post Share on other sites
Kiki-Jiki Posted July 13, 2009 Report Share Posted July 13, 2009 Yeah I don't really like the Madbull ones very much... they do seem to read pretty low. A friend's upgraded VSR-10 shooting ~500+ FPS was reading at like 410 lol...and his L85 which is shooting around 380 was reading closer to 350. Then again, when another friend had an upgraded Tanaka it read 666 FPS with .20's consistently on a Madbull chrono...so if that was shooting low, I don't even want to think about what it was *really* shooting. Link to post Share on other sites
L4byr1nth Posted July 13, 2009 Report Share Posted July 13, 2009 I wonder if anyone has tested Madbull against Madbull? Ben. Link to post Share on other sites
shmook Posted July 13, 2009 Report Share Posted July 13, 2009 I wonder if anyone has tested Madbull against Madbull? Ben. We had this problem at PR. The chrono at the dessie regen was reading 370 fps on this blokes gun, the in game chrono was reading 340. Both the blue madbull ones. Link to post Share on other sites
galactica Posted July 13, 2009 Author Report Share Posted July 13, 2009 Then again, when another friend had an upgraded Tanaka it read 666 FPS with .20's consistently on a Madbull chrono...so if that was shooting low, I don't even want to think about what it was *really* shooting. I've seen 770 from a tanaka on CO2, so it's really by-the-by. It's the consistency with other chronos that's the issue at hand. Link to post Share on other sites
L4byr1nth Posted July 13, 2009 Report Share Posted July 13, 2009 Oh yeah, oops! Ben. Link to post Share on other sites
Steel Rayne Posted July 13, 2009 Report Share Posted July 13, 2009 I found them to consistently crono under by 20-30 fps.... worrying really as sites push up towards the legal limit at 370ish. Link to post Share on other sites
Philbucknall Posted July 13, 2009 Report Share Posted July 13, 2009 That is the issue especially from a site point of view if different chronos are used. we always go on the higher reading to be safe but does that mean it is right? probably not always. Also if detuning or upgrading guns at home and using my combro chrono i doen't always know if it will then be site legal as the readings are different. Consistency is key with what is argueably one of the most important bits of safety equipment in airsoft after eye protection. Link to post Share on other sites
Kiki-Jiki Posted July 13, 2009 Report Share Posted July 13, 2009 I've seen 770 from a tanaka on CO2, so it's really by-the-by. It's the consistency with other chronos that's the issue at hand. Yeah, that's CO2...my friend was using propane. And I know the issues with consistency, but the Madbull's are known to read low, so I was just a bit surprised to see how hot it was shooting on the Madbull, meaning it's probably shooting even hotter in reality. More on topic, I have found that the F1 Chrony's are actually pretty good, if you get the lighting right. A friend of mine has one and it reads very consistently if you get the lighting done right (last time it was just out in the sunshine, and that was fine). Link to post Share on other sites
Steel Rayne Posted July 13, 2009 Report Share Posted July 13, 2009 Thats possible with good seals... A friend replaced all his m700 seals and hit 600 on 134... it was worrying lol Link to post Share on other sites
galactica Posted July 13, 2009 Author Report Share Posted July 13, 2009 Hmmm. Interesting that there's a fairly broad spread of similar experiences so far. It would be awfully convenient that most chinese guns would read just under 1J with such an under-read. Especially if you had a large fleet of rental guns you didn't want to downgrade... Link to post Share on other sites
Philbucknall Posted July 13, 2009 Report Share Posted July 13, 2009 I don't know, most of the chinese guns i have had would have needed more like a 100fps difference to drop down to legal limits. Heck, some were so overpowered out of the box they nearly recoiled with each shot!!! Link to post Share on other sites
Panzergraf Posted July 13, 2009 Report Share Posted July 13, 2009 I have similar experience with Madbull Chronos. ~30fps lower than others, and some times the display doesn't update with a new reading. Very annoying to use, and it eats batteries too. My Xcortech on the other hand - top notch, can't say anything bad about it Link to post Share on other sites
kruck Posted July 13, 2009 Report Share Posted July 13, 2009 I have similar experience with Madbull Chronos. ~30fps lower than others, and some times the display doesn't update with a new reading. Very annoying to use, and it eats batteries too. My Xcortech on the other hand - top notch, can't say anything bad about it That sounds familiar, I got 3 readings of 207.9 on the Army Detonics from one of these mysterious blue chronos, in a row, which seems rather strange, also I reckoned the FPS I was getting wasn't really matching up with the pain of shooting myself in the finger with it... Link to post Share on other sites
Azubi Posted July 13, 2009 Report Share Posted July 13, 2009 It begs the question though, if they are 'known' to read low like some people are saying, then why do people still buy them? Not doubting anyone's experiences like, just interested why people would buy something like a chrono that is known to be inaccurate. This isn't counting those who are ignorant of the facts, more the point those who have bought them whilst knowing they are inaccurate. I was considering buying one myself for all my toys, that need repairing or upgradingbut I think I shall look elsewhere now. Link to post Share on other sites
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