RE: Hirobo XRB PICS!!! and build info.  
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    • All Forums >> RC Helicopters >> Electric RC Helis >> RE: Hirobo XRB PICS!!! and build info.
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    RE: Hirobo XRB PICS!!! and build info. - 12/31/2005 10:57:26 PM   
    iuseyew


     

    Posts: 118
    Joined: 2/20/2005
    From: Corona, CA, USA
    Status: offline     		double post.. sorry

    < Message edited by iuseyew -- 12/31/2005 11:00:46 PM >

    (in reply to Tom N)
           Post #: 226

    RE: Hirobo XRB PICS!!! and build info. - 12/31/2005 10:58:46 PM   
    iuseyew


     

    Posts: 118
    Joined: 2/20/2005
    From: Corona, CA, USA
    Status: offline     		also i have seen but cant currently find i think it was a stabilzer bar that said high performance or somthing like that it was not the OEM one though i will post it as soon as i find it again! also i still dont see a heatsink!!

    (in reply to Tom N)
           Post #: 227

    RE: Hirobo XRB PICS!!! and build info. - 12/31/2005 11:45:23 PM   
    Tom N


     

    Posts: 10
    Joined: 11/20/2005
    From: Somerset, UNITED KINGDOM
    Status: offline     		Hi Icantseenothing

    Click on the link on my previous post. When the screen loads look under the first two pictures, on the extreme left just under "View Cart", in big red letters "Heat Sink Kit". Click on this and you will find details with a series of pictures of how to install

    HTH

    Tom

    (in reply to iuseyew)
           Post #: 228

    RE: Hirobo XRB PICS!!! and build info. - 1/1/2006 4:32:00 AM   
    iuseyew


     

    Posts: 118
    Joined: 2/20/2005
    From: Corona, CA, USA
    Status: offline     		wow.. its in an odd spot!! i am kinda blind i guess.. thanks for the assistance!! isnt adding the heatsink going to make the motors run harder to lift the extra weight and in turn cause it to heat up or does this actually work out?
    Also has anyone added a different tail instead of the stock truss i have already ordered a replacment but if i break it again i will want a cheaper alternative!

    < Message edited by iuseyew -- 1/1/2006 4:43:08 AM >

    (in reply to Tom N)
           Post #: 229

    RE: Hirobo XRB PICS!!! and build info. - 1/1/2006 8:35:00 PM   
    Tom N


     

    Posts: 10
    Joined: 11/20/2005
    From: Somerset, UNITED KINGDOM
    Status: offline     		Hi Iuseyew:

    The heat sinks only weigh a few grams. I would imagine the heat dissipation would far outwiegh the extra power to lift them. I think I saw on an earlier post that someone had fitted their own heatsinks and claimed to run 3 battery packs back to back with no overheating! I doubt Rick would sell them if they didn't improve performance.

    To all:
    I had my first flights today in the local hall. Converted schoolroom so not huge, about 35' by 20' of clear space. Wow, this is more fun. I left the flybar weights on as this was my first time but even so managed some decent figure eights and piros. It is difficult to accurately trim the XRB in small places because of rotorwash off furniture, walls etc. You can't really leave it to settle before it gets near something and you have to take control. In the hall I got it trimmed for hands off virtually indefinitely. It gives much more confidence when you know the blades are balanced, tracking correctly and everything is in trim. I did notice a slight inclination to track left in forward flight but not all the time. It was slightly disconcerting to get moving forward and then the nose would bob up slightly and it would virtually stop due I guess to those balance weights trying to maintain a hover! Got a bit panicky nose in but when I kept it moving it was much easier to keep orientation.
    Okay weights coming off tonight and paddles on. I will re-trim and have another go tomorrow. See if I can do some nice slow piros while drifting around the hall .
    This really is a fun little heli and miraculously it is still in one piece. However as I am getting more confident I am aware I am entering the Danger Zone

    Tom

    (in reply to iuseyew)
           Post #: 230

    RE: Hirobo XRB PICS!!! and build info. - 1/1/2006 9:27:13 PM   
    csw


     

    Posts: 4
    Joined: 1/1/2006
    From: , UNITED KINGDOM
    Status: offline     		I have had my xrb for a couple of days and have flown it three times, on each occasion after about 13 - 14 mins the motors cut out! There seemed to be lots on battery power left as I was hovering at half stick at the time. Can someone advise me is this is normal.

    Thanks

    (in reply to Tom N)
           Post #: 231

    RE: Hirobo XRB PICS!!! and build info. - 1/1/2006 9:57:02 PM   
    Tom N


     

    Posts: 10
    Joined: 11/20/2005
    From: Somerset, UNITED KINGDOM
    Status: offline     		Hi csw

    Only had mine 7 days so not an expert but if you mean that the motors spool down automatically rather than cut out (regardless how much you waggle the throttle) then yes it does seem this is meant to happen.

    It would appear those awfully clever Hirobo people have designed a circuit that recognises voltage is getting low and cuts power gradually (so you can still land safely) thus preventing damage to the lipos by over discharging.

    On my XRB the red and green lights that flicker on and off in flight to indicate what the gyro is doing combine to flash orange and I lose control of the throttle, the motors slowly reduce power and the heli drifts down still under cyclic control for a soft(ish) landing. I always get some warning of this as towards the end of the battery I wiil have had to increase throttle and the nose is more inclined to drift (yaw).

    I'm sure one of the more experienced owners on here can explain more technically what is happening.

    Are you enjoying your XRB? I just love mine!

    HTH

    Tom

    (in reply to csw)
           Post #: 232

    RE: Hirobo XRB PICS!!! and build info. - 1/1/2006 10:16:58 PM   
    csw


     

    Posts: 4
    Joined: 1/1/2006
    From: , UNITED KINGDOM
    Status: offline     		Thanks for that tom. Yes the motors do spool down slowly but with no advanced warning. What flight time do you get from a fully charged battery?

    (in reply to Tom N)
           Post #: 233

    RE: Hirobo XRB PICS!!! and build info. - 1/1/2006 10:41:57 PM   
    Tom N


     

    Posts: 10
    Joined: 11/20/2005
    From: Somerset, UNITED KINGDOM
    Status: offline     		Hi csw

    I have no idea! I haven't timed them. I usually take a break after a few minutes to let the motors (and me) cool down. Usually get three shortish flights from a battery so probably similar time to yourself. Doesn't seem long when you are having fun

    The extra battery I have just recieved from Rick in the States (see earlier posts on this thread) is only slightly higher capacity at 850mah but seems to last quite a bit longer and is much better and half the price! When I change back to the original battery, being a little lighter, the trim is slightly out so I will probably buy a second 850mah and keep the original as a spare or maybe Ebay it.

    How are you getting on with the flying? Where in the UK are you?

    Tom

    (in reply to csw)
           Post #: 234

    RE: Hirobo XRB PICS!!! and build info. - 1/2/2006 5:54:40 PM   
    arcticflyer


     

    Posts: 111
    Joined: 11/17/2005
    From: Tuktoyaktuk, NT, CANADA
    Status: offline     		XRB Guys, I'm getting kinda frustrated with the "fact" that my heli will not turn to the right I have read the instructions more times than I would like to think about and know how to trim this heli out. Despite that it still won't turn right in forward flight. Left turns are as smooth as silk. I have gotten so used to cross controlling (full right when going forward) that when I get my next heli I am going to crash for sure! I have dug through this forum and found questions and posts where other guys are having the same problem.
    bdavsion, I found where the instructions cautioned about the pitch being out of wack and have tried that fix several times with negative results. This is the only thing I have found that I really don't like about the model. I realize this is an indoor trainer for small areas the problem is, it is training me and others to cross control way to much in larger spaces like a gym.
    Flypaper, I remember you mentioning a mod where the servo connects, do you have any pics of the mod and will your heli turn right in forward flight smoothly after the mod?
    Would stiffer blades correct some of the problem. If so, I am up for carbon blades or anything you guys suggest as a substitute. Don't get me wrong I love this model. It got me back into RC and introduced me to heli's which I now realize I like alot better than fixed wing. Skip

    (in reply to Tom N)
           Post #: 235

    RE: Hirobo XRB PICS!!! and build info. - 1/2/2006 6:13:19 PM   
    iuseyew


     

    Posts: 118
    Joined: 2/20/2005
    From: Corona, CA, USA
    Status: offline     		i found another topic ralating to the tail boom that i wanted to do to my XRB it is HERE!!!!

    also additional body can be found HERE!!!!

    Also a Heatsink that is interchangeable with our motor on this heli is located HERE!!!!

    < Message edited by iuseyew -- 1/2/2006 9:49:50 PM >

    (in reply to arcticflyer)
           Post #: 236

    RE: Hirobo XRB PICS!!! and build info. - 1/4/2006 10:52:29 PM   
    Dart373


     

    Posts: 1098
    Joined: 10/20/2002
    From: Chapel Hill, TN, USA
    Status: offline     		who has good prices on these batteries? They are way way way overpriced. Looking for a spare.

    _____________________________

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    (in reply to prowler1k)
           Post #: 237

    RE: Hirobo XRB PICS!!! and build info. - 1/5/2006 1:21:38 AM   
    iuseyew


     

    Posts: 118
    Joined: 2/20/2005
    From: Corona, CA, USA
    Status: offline     		look for rickyblazes website in this thread!! he has the BEST price anywhere.. i cant find anywhere cheaper!

    (in reply to Dart373)
           Post #: 238

    RE: Hirobo XRB PICS!!! and build info. - 1/5/2006 4:32:54 AM   
    Flypaper 2



    Posts: 4243
    Joined: 3/29/2002
    From: Kingston, ON, CANADA
    Status: online     		Skip:
    After the mod it does turn much better to the right. I'm not to good at the camera thing but i'll give it a shot tomorrow. Try turning the adjustment screws on the top blades to the left a turn at a time to se if it can be made to turn to the right. Are you using the transmitter that came with it or your own ?
    Gord.

    _____________________________

    Gord
    Dreamed I was a muffler. Woke up exhausted.

    (in reply to arcticflyer)
           Post #: 239

    RE: Hirobo XRB PICS!!! and build info. - 1/5/2006 11:27:02 AM   
    drapam


     

    Posts: 28
    Joined: 12/15/2005
    From: Aberdeenshire, UNITED KINGDOM
    Status: offline     		I read somewhere this AM about a person having difficulty with fitting the Safety Skid.
    If someone can tell me how to add attachments, I will take some pics of mine and put them on the forum
    CHAKA

    (in reply to Flypaper 2)
           Post #: 240