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My Monster'ed Hyper 7
4 Attachment(s)
Finally finished the battery tray so now it's actually road-worthy. Made a run with the eagletree too, the 6S1P pack works pretty nice. It's geared 13/46, so it's running about 35 mph or so. Blistering acceleration, from a dead stop I can make 5 - 6 houses down the street in about 4 seconds. :intello:
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Looks good! Nifty design on that tray. Is it very heavy though? (the tray)
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are those a123? or some other liion? thats a huge voltage drop at the begining of the run. Im sure if you ran a 6s2p that would help alot? what kinda run time did you get? and motor?
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Yes, A 6S2P would help a lot with voltage drop, but I really don't want to pay the weight penalty. I also seem to have one cell that's a bit wonky, so that may be contributing to the drop a bit. It's pulling in closer with every cycle, but I think I may have to end up replacing it. It peaks way faster than the other cells, so something may be goofed up with it. I've got no information on runtime, because with the testing/etc I've yet to really get out and run it. I'm pretty sure I'm in the 15 minute range. The motor in it is a 10XL, it barely gets warm. I've temped it at around 115 degrees. I've got an embarrassingly bad video of it here: http://www.youtube.com/watch?v=PZzHn7Pb1-M |
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thats good runtime. im sure the low gearing, low kv motor, and hv all plays a big roll in that. Thats def. a nice setup esp. for racing. lightweight, short gearing. im sure youl realy suprise a few nitros guys :na: |
Heheh, I had a camera strapped to my head. Boy, did I get some looks on the street. It's a tony hawk helmetcam, but still looks pretty odd.
You've hit it on the head, it's a lightweight, spunky setup for the track or for bashing. With a 17 minute charge time for the A123's, even a 15 minute runtime is no big deal. I've run this 10XL in my emaxx and I can't believe how cool it runs in the buggy. I'm hoping to get it shot with the radar gun this Sunday, and see exactly how fast it's going. As cool as it's running now, I could gear up to the 40 mph range, but I don't have a 15T hardened pinion handy. Once the Mamba 2200Kv goes in there, the 15T will be way too big for the buggy anyway. |
Looks good!
So out of curiosity what weight center diff fluid you running? It sounds like you have a nice balance of slip under full acceleration. I guess the street tires help keep the front-end from excessively unloading too though… |
Thanks!
I'm using 10K in the center diff and it's really not enough, but I'm also basing my experience on running on concrete. When I punch it, the front tires completely unload and balloon, they get yanked off the ground about an inch or so. It pretty much ignores any steering input because the tires are just skimming the ground. I'd like to put some 20K in the center, but I haven't got any on hand to test. I do have some 30K in the mail with some other parts and pieces, so I'm going to give that a shot. If it's too much I'll pick up some 20K. Also, if I remember correctly, I have a bad O-ring (the one around the shaft) so I think I didn't fill it all that full. Might have to get that taken care of before I fill it with the new stuff. |
I think you should jump up and try 50k in the center. When I had my LSP, my front tires would balloon with 50k. Ballooning pretty much stopped when I put 100k in, but when it went past 45mph, it would start ballooniing.
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10k sounds really light! Isn't the stock H7 fluid 75k? For comparison, I'm running 130k (at least if I could get my conv up and running).
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Hmmmmm. Looks like I won't have any worries about going too far with the 30K. I thought the H7 was a 5/5/5 setup stock? Xcntrk, maybe you are thinking of 7.5k (7500wt) for the middle? I bought it used as a roller, so who knows what's really in the front/rear diffs. I'm guessing 5K. I sure need some new stiffer springs tho, either that or heavier oil in the fronts, it wants to bottom out pretty easy.
Blunten: yeah I remember your pizza cutters! Thanks for the tip on the 50K stuff. I don't think I'll get any in by the TnT, but I'll bring it out anyway for the heck of it. I took it to work today with the road rage tires on it to show my coworkers. We've got a LONG stretch of smooth concrete with lots of grip. I'm going to go run around on the empty lot after work tomorrow. I'll see how it performs on dirt with the panther tires on it now. One thing that kinda bugs me is that I've got one of the Century Gear hardened pinions in it, and it's showing some pretty obvious signs of wear already. That's not good. Either I'm being really hard on it, or the Century pinions aren't as hard as they lead you to believe. Anyone else have similar experiences? |
A couple runs ate up a century pinion on mine. Gotta go with the ones from Mike, they really hold up well.
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are you running a metal spur? how long do the both gears last, metal on metal? id upgrade to the kyosho but if they last ages i may just not. but then again, the metal ones are noisy as!
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Yes, running metal spur. Been running for a couple months (couple runs a week avg.) with the same ones and they show little signs of wear. The metal gears are noisy, but my Muggy has enough power (and weight) to tear up plastic spurs in a hurry. I like the plastic ones, my buggy is nearly silent running one.
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