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Type: Posts; User: koolkat

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  1. Replies
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    557

    Be aware of what you wish for. If you put in a...

    Be aware of what you wish for.

    If you put in a motor and gearing to do 60-70MPH you will also have to weigh down the chassis and either remove the stock body and replace it with a modified buggy...
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    896

    The "C" rating is an indirect indicator of the...

    The "C" rating is an indirect indicator of the internal resistance of the battery when new. Current supply capacity is limited by heat within the battery and a 20C 5000mah battery for instance can...
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    832

    The tighter you lock things up the better...

    The tighter you lock things up the better acceleration you get but at the expense of control. Having the front and rear diffs functioning not only helps with cornering but also helps reduce the...
  4. Thread: 9 cell ni-mh

    by koolkat
    Replies
    3
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    460

    9c will be absolutely no problem - for a start as...

    9c will be absolutely no problem - for a start as soon as you take them off the charger the voltage will drop about 0.5v or more. Then as soon as you pull the trigger you will drop another volt or...
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    644

    I've noticed that too. Though the motor is not...

    I've noticed that too. Though the motor is not sensored the ESC must have an idea of which way the motor is turning. If you roll backward the ESC won't let you use forward power until you stop (or...
  6. Replies
    14
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    1,063

    Just because they have more poles does not...

    Just because they have more poles does not necessarily mean more torque.

    The 200 turn - 2 pole - motor in a full size electric vehicle may only have two poles but gives maybe 500 times more torque...
  7. Replies
    25
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    41,426

    I got RTR and yes it is 50/40. I thought too it...

    I got RTR and yes it is 50/40. I thought too it was 30/30 initially and put 40/40 in to stiffen it up - obviously without success - so now run 60/60 on hard surfaces with Losi 4.1 x 2.5" springs all...
  8. Replies
    4
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    1,739

    There is no correct setup for all off road...

    There is no correct setup for all off road conditions - setup will be very different for packed dirt vs sand vs grass vs scrub vs jumping vs tarmac etc. They can't sell a dozen different versions...
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    554

    We run stock gearing on 3s on grass that grows up...

    We run stock gearing on 3s on grass that grows up to about an inch before cutting and have no problems. Usually running stock tyres for bashing which act like drift tyres with lots of wheel-spin on...
  10. Replies
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    504

    It looks like a soft-case to me. There is no...

    It looks like a soft-case to me.

    There is no way I would run a soft-case LiPo in a truck that spends half its time jumping, rolling over, flipping, or crashing into other trucks/other objects. ...
  11. Replies
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    1,350

    Soft dirt and asphalt are not too bad for...

    Soft dirt and asphalt are not too bad for heating:

    Soft dirt = plenty of wheelspin = less torque = less current = less heat

    tarmac = little rolling resistance = less heat + high speed = good...
  12. Replies
    44
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    28,906

    Simple answer - You don't unless you are a...

    Simple answer - You don't unless you are a neurotic clean freak or run in muddy puddles!

    I do a few checks and have only had one (slipper) bearing fail on me in hundreds of hours use between three...
  13. Replies
    44
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    28,906

    A temperature data logger is tempting just for...

    A temperature data logger is tempting just for interests sake.

    Our 3s batteries are all 3400mah 30C or 4000mah 25C and we run hard on grass of varying lengths in warmish ambient temperatures -...
  14. Replies
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    2,108

    Possible causes: Too light centre diff oil or...

    Possible causes:

    Too light centre diff oil or it has leaked out - the centre diff shifts more of the acceleration power to the front wheels - but many don't realise it also puts more braking on...
  15. Replies
    14
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    12,186

    No need for a radar gun - just do what I did -...

    No need for a radar gun - just do what I did - any camera that takes video at 30 fps or over and can be mounted somehow - tripod or sitting on a wall/post/rock etc. - will do.
  16. Replies
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    2,020

    a123 are just a brand that makes LiFePO cells -...

    a123 are just a brand that makes LiFePO cells - they make the best cells available at this time as far as I know.

    There is a very great deal of info on LiFePO on many forums and manufacturers'...
  17. Replies
    14
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    12,186

    I had stock gearing but was running 1/8 buggy...

    I had stock gearing but was running 1/8 buggy wheels with hard compound slick tires on 17mm adapters so with the same effect of 15% higher gearing - so probably effectively similar to El Sob's 15T. ...
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    1,279

    Was never intended as a backlash against anyone -...

    Was never intended as a backlash against anyone - I just raised the issue that supporting your local economy should be a consideration when you buy something. You have to weigh up how important that...
  19. Replies
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    2,020

    You will be bored pretty quick with a 2s LiFePO. ...

    You will be bored pretty quick with a 2s LiFePO. Did you got the ******* LiFePO 9.9v? - that is what I have (three of for three cars) and one was hard to balance for about 10 runs and then a cell...
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    12,186

    Hardly a fair comparison a 1/10 vs a 1/18. ...

    Hardly a fair comparison a 1/10 vs a 1/18.

    Expect more low-down acceleration with a 2s 7.4v LiPo but likely a bit lower top speed than the 8.4v 7c NiMH because of the lower voltage. When fresh...
  21. Replies
    44
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    28,906

    Nice summary Turr1can - I would add that with the...

    Nice summary Turr1can - I would add that with the motor mount you need the aluminium slipper bearing adapter as well to replace the plastic one (either traxxas 6893X or kingheadz/FLM ones - all equal...
  22. Replies
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    1,279

    Which has the added benefit of reducing the heat...

    Which has the added benefit of reducing the heat load in your ESC
  23. Replies
    27
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    1,279

    I was wondering about that - the Turnigy...

    I was wondering about that - the ******* batteries I have have wires about twice the cross-sectional area of my Venom, Maxamps, Racer's Edge, and Dual Sky LiPos which are all rated to higher current...
  24. Replies
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    1,279

    Out of three turnigy batteries I have one blew a...

    Out of three ******* batteries I have one blew a cell after about 5 uses - and those were LiFe batteries supposed to be much more robust than LiPo. Maybe they just haven't worked out LiFe yet.
    ...
  25. Replies
    16
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    3,528

    Have you tried linear springs? Progressive...

    Have you tried linear springs?

    Progressive springs have their place - but the rationale for them is not strong on a truck like the slash 4x4 - for a start the "soft" bit is almost completely...
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