Oehler Chronographs

[ricka0]

[ QUOTE ]
One draw back I see to the Millenium is that it doesn't allow you to set it up on a longer rod. And I believe when they tested the Millenium and compared it to the Oehler, they were both on a 2' rod. The Oehler was slightly less accurate with this spacing, but I would be willing to bet that when the Oehler is set up on a 4' rod or even an 8' rod, that it is the same or more accurate than the Millenium on the 2'. Oehler states that the accuracy climbs a certain percentage on their unit the farther the skyscreens are from one another.

[/ QUOTE ]

Good point. The further you space them the more the error goes down.
I'd bet the Oehler on a 4' is more accurate and on a 8' even more so. (not that the 2' errors were bad)

[Brent]

The pressure software/hardware utilized in PressureTrace is better than the Oehler, buy it if you wish to test pressure. As BigBore pointed out, the serial port is being used less and less but Oehler still uses it on the M43. A serial port to USB adapter will not work as well, the Dexadine software does not support it. This means you need a top end computer in order to get one with a serial port, as I had to buy.

Jim Ristow at RSI sells quality stuff, and the CED chrono is a nice one by every account I've read. I still like my Oehler for MV and BC's. I would buy a 35P w/4' rail, PT if you wish to test pressure, then if you wish to test BC's with two chrono's you can do that with buying another 35P later, or get a good average MV up close and then set it downrange to get a good average to calculate the BC. The printout on the 35P is a nice feature. The RSI Ballistic Lab is the best ballistic software on the market IMO, and I've got many of them.

[Varmint Hunter]

I really like the 35P and have had no problems getting good readings under any light. Except, of course, when I reversed the dang wires. [img]/ubbthreads/images/graemlins/wink.gif[/img] Oehler should change the plug design so that this isn't possible.

I had two other recommendations for Oehler; neither of which they listened to. [img]/ubbthreads/images/graemlins/smirk.gif[/img]

1. The LCD display should be on a 45 deg angle so that it is easier to see when sitting at the bench. Either that or the unit should have some drop down legs in the rear so the whole unit sits at a 45 deg angle. They didn't agree. [img]/ubbthreads/images/graemlins/smirk.gif[/img]

2. I had to make a wooden crate that would fit the 2' pole with the screens attached and the chronograph itself. I would have much rather purchased a plastic (tool) box that would have accomodated the set up and would have had a top to protected the unit. A handle would be nice to have too. I searched everywhere for a box of this size, about 26" internal width, but couldn't find one. Too big of a box wouldn't be helpful either. I suggested that Oehler make (and sell) one that would be do the job since you can't find one and many of their customers could use it. They didn't like that idea either. [img]/ubbthreads/images/graemlins/smirk.gif[/img]

Any of you guys have a suggestion??

VH

[ricka0]

Great Report Brent!
[ QUOTE ]
<font color="red"> This means you need a top end computer in order to get one with a serial port, as I had to buy. </font>


[/ QUOTE ]

Or buy an older used one (off eBay) [img]/ubbthreads/images/graemlins/smile.gif[/img]

[LB]

As far as a case for transporting and storing a 35P, Brownell's sells one; or they did? It's just a cheap gun case, but it holds my whole four foot setup, all the plastic parts, includng cables and the photography lighting tripods. Everything goes inside, once you figure it out, and cut some recesses in the egg crate foam. I don't have to dismantle the sky screens, just assemble the plastic triangles and set the ¼X20 studs into the tripods. It makes for a fairly slick setup. I tape, and bundle the plugs at different lengths so I know which one plugs in where? I agree, it could be a little more fool proof, but if you do it wrong once, you learn fast.

One other thing, about the longer distances between screens. I don't know about other places, but the longer your screens are, apart, the harder it is to line them up properly, over uneven ground. With the short time we get between line changes, two people make the process go a little faster; one at the bench, and the other guy moving sideways and raising and lowering, as needed. Eight feet would be that much more trouble, for any gain in accuracy?

Good hunting. LB

[7Rumloader]

You can set the millenium up on a 4 foot rod. They sell one as an acccesory and I believe they stated it could be spaced out to 10 feet! I like the looks of the whole setup and the price can't be beat! Now I am having a hard time deciding between the Oehler and the RSI system. [img]/ubbthreads/images/graemlins/confused.gif[/img] I went back and read it all again and they do sell a 4 foot mounting bracket but they say it will only benefit archers shooting arrows over 24 inches. Also I didn't see anything about 10 foot spacing. I don't know where that came from! [img]/ubbthreads/images/graemlins/confused.gif[/img] [img]/ubbthreads/images/graemlins/confused.gif[/img] [img]/ubbthreads/images/graemlins/grin.gif[/img]

[ricka0]

Unless I'm missing something - the error should be linear with separation. Going to 4' should half the error (timers error is essentially zero - you only have distance error (with good sensors)). Call/email them and ask - then post the question.

I'm going for the RSI system.