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As if you hadn't heard it enough, 200* is excessive. With that much power to weight ratio you should be running 150-160* at the most. Gearing down may kill the fun a bit but def make a nicer/more managable drive and bring the heat way down. My 2cents |
bondo i do know 200 is hot. thanks:-) only happened once. wont happen again. kinda suprised me. i did gear down. from 18 to17. is 45ish MPH too high for a track with 200 foot straight? maybe. that why i ordered a 16 from mike. but a few other people thought i need to gear up to give the motor some load. i do have 30,000 in the center. guess im going to 50,000?
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I am wondering with the 1/5, do the same rules apply as far as where you are topping out at down the longest straight when determining initial gearing.
Hopefully you can clear up the heat issue. |
No traction, diff unloading - to me sounds like lots of wheel spinning - and heat generated in the motor from revving at high rpms w/o load. I would definitely go up in weight in the cd - many of us have used 100k in smaller trucks with success. What about punch control or torque limiting on the esc - have you tried those to see if they would make the truck more controllable (less wheel spin)?
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is current limiter the same a torque control? if yes then i did. stock was at 200 amps. im at 150
I LIKE WHEEL SPIN lol.:-( i can drive with a lighter trigger finger and in a race i would but that doesnt show off how crazy this thing can be. btw the truck is totally controlable :-) its the best sct ive ever driven no matter what the size. no matter how much wheel spin. its a beast. |
Less wheel spin will also up your runtime. I remember fighting the wheel spin beast on a simple 1/10 2wd truck on a winter indoor track. almost made my runtimes go up 30% just by correcting it.
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when proline comes out with a real 1/5th scale track tire that may help wheel spin .plus when the track gets redone and watered in a few weeks and has traction that may help too.
im thinking a 16 pinion will still be plenty for for the straight. |
update- i ran at same track but only used whatever throttle the track could take. tried to have very little wheel spin. maybe 1/2 on the straight.
i got 17 minutes run time instead of 12. motor was max temp of 150F on telemtry and was 125 in the pits by temp gun a minute later. batterys were much cooler .100f center dif was 50 degrees cooler. 60 degrees out today instead of 70 still a 150 amp current limit and a 3.5 voltage cut off http://i7.photobucket.com/albums/y29...twheelspin.jpg dont freek out with the rpm i may have 2 pole instead of 4 pole in telemrtry.? just devide by 2 |
I would try 100k in the center, the truck seems to rotate very well naturally. You always have some throttle to make it do what you want if 100k is a little thick off throttle.
I want one of those trucks bad, don't hate but mine will have the 28.5cc reed motor in it though, I've seen a couple videos and that motor is nutty. The thing keeping me from getting one is no track for 1/5th around me to run it at. |
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was in the same boat too when I bought my first 1/5 . I can honestly say yeah, I would love to be able to race this vehicle. It definitely is a tough call on spending the money on essentially a basher if you have no track.
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Granted, I've electrified all of mine.. but the 1/8 scale tracks will let me run there on practice days so long as I play nice with everyone else:whistle: You'd be surprised how friendly people get when they see one of these big things shaking about. |
lol i ran over a slash .it wasnt pretty and wasnt my fault. funny though:lol: like a speed bump in the road
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nvmd
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found a place to stretch the beasts legs. CORN FIELDS:intello: nothing like cruizin at 60+ mph down a corn field ( without corn lol)
just dont roll over at the far end cause its a 5 minute walk to go get the thing. i'm down to a 16t pinion with the castle blower fans and its running cool now. no issues;no problems; just fun :-) i need tires. |
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