Really struggling to get motors for my Clod

[AndyjcClod]

Hi Peeps

I am really struggling to get some fast powerful motors for my Clod.

They need to run the same speed both backwards and forwards.

Anyone got any ideas of where I can get 2 motors from that will be suitable? And what type I have looked for teh mayhem motors everywhere and not foudn anyone who can supply them any more.

Help please my poor clod is getting whooped by 1/10 scale 10 year old trucks running 540s!!

[Pellandine-sports]

http://www.esphobby.com/clod.htm

I personally like the ESP Clodzilla power-up motors but there again I'm biased[:I]

M/Mayhem motors also rock.

Tower Hobbies can help you out with a matched pair of motors. The choice is wide and so you just need to know how much you want to spend. Bear in mind also what ESC you're going to use as it has to be up to the job.

Good luck

[DJTheo]

Also Graupner makes the 600 speed ones which are good power and torque (550 size) for (little) money.

Cheers

[Lemming]

If you don't want to go expensive, twin Traxxus Stingers are a good bet. Fast enough and a good amount of torque. Also zero timed so a perfect match. Probably getting some for my Geckos soon

One of the shops affiliated to TC had them for less than £25 each from recollection

[yuckydog]

Check out a Tower Hobbies 14T Quad Wound motor. I've got one on eBay at the moment (ending today) but you can get them for $19.99 each at Tower.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewI...item=6002545496

[backtomyroots]

Lemming, would that mean I could assume that Tamiya Sport Tuned motors are also zero degree timing ?

[Lemming]

badword no!

Little gits... Had to re-time them by ear!!! Involves cutting a retaining lug off, and turning the end bell to get them running opposite timed. Have to de-tune 1 and reverse tune the other...[!]

Gives good performance though, just no good if you aren't sure what you are doing!

Hope that helps

[backtomyroots]

thanks Lemming - that sounds a bit too complicated for me! I think I'll try those stingers ! I have a new pair of NIB Kyosho Magnetic Mayhem motors (regular & reverse)but I don't have the heart to open them up as they are discontinued.

[Pellandine-sports]

quote:I have a new pair of NIB Kyosho Magnetic Mayhem motors (regular & reverse)but I don't have the heart to open them up as they are discontinued.

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id="quote">id="quote">

Get'em open and start stompin'[]

Do you think you're gonna make a mint by keeping them NIB?. They may be discontinued but there's plenty of stock on shelves out there.

[backtomyroots]

no, not thinkin of makin any $ on 'em. but I recently also got a nib kyosho pulsar pro pistol grip radio from the 80's and that teamed with my nib motors and my nib double dare makes for a great nib kyosho combo. I also am expecting a second nib double dare although it appears as if it has been "lost" in the mail. [][][] or it's in some post mans basement (no offense to any postman on here)

[theshopkeeper]

OK, I keep reading these threads about motors going forwards and reverse and the timing being different so I recently tried putting a couple of used, budget, fixed timing (Mtroniks) 19x2 motors into a Twin Detonator. They definitely don't run at the same speed forwards and reverse - in fact, I'm not convinced they ran at the same speed going forwards even!

I can see that the front wheels went a little slower than the rear on the bench but running it on concrete and grass I couldn't actually see why this was a problem. With all 4 on the ground, I couldn't tell - and then I thought on and realised that some of the 4WD rally cars have a higher gearing to the rear than the front. In fact, one of my customers couldn't afford two motors so he put a 17x2 in the back of his TD and left the silver can in the front - believe it or not (and I know most on here won't believe it!) it actually runs very well.

So can someone tell me why it's essential to have the two motors going the same speed?id="blue">

I wasn't going to ask but Lemmings comments on the Sport Tuned have made me wonder - I've sold dozens of pairs of sport tuned for clodbusters, wild daggers, and twin dets over the years and no one has ever come back to me... in fact, I thought until I read that they were zero timed and ran at the same speed.

[DJTheo]

quote:So can someone tell me why it's essential to have the two motors going the same speed?

id="quote">id="quote">

Actually as you say it is not as DC motors are not sychronous motors but torque generators and speed is just a result of it and the external load. The reason why they recommend it though is for the motors to run at a good effiency, which at opposite timing isn't great, that's all. But other then that no problem running any combination of motors, just that if they are too different mainly one will produce power and the other will be more a generator and just rotating with it.

Cheers

[Lemming]

When I originally fitted the TZs, the problem was Squashing / Stretching (can't remember which).

With the timing set as normal (advanced) the truck would (now I can't remember which way) either Stretch or crunch when driving, as 1 gearbox was faster than the other... Looked quite funny though!!! A bit like a cat elongating when stretching!

I am sure it is stretch. Basically, 1 motor pulls faster and the other motor gets dragged along. Only really affected at higher speeds and under harder acceleration.

Once I re-timed them, this effect vanished, and the truck was stable under accelleration / speed.

I know vehicles such as the TXT are not an issue as both motors run together and in the same direction. It is just that one clod gearbox is mounted backwards. Basically causes more strain on the suspension and gearboxes if you have incorrectly timed motors. Only vehicle I know of where 1 gearbox is reversed, so probably not a problem on other cars / trucks.

Cheers

Steve

[Pellandine-sports]

This comes down to tolerances at the end of the day. Having two perfectly matched motors is great but worrying about obtaining perfection is wasted unless consideration is given to the equality of the rest of the drivetrain.

The clodbuster is a perfect example .......how 'Matched' is the efficiency of the two diffs, gearboxes, grease content, axle rotation etc. If one tranny is 'Tight' in comparison to the other then two matched motors are a waste of time and effort..........its like playing music on a top of the range sound system fitted with cr@p speakers

[Lemming]

Very true, hence re-timing them by sound was sufficient.

The TZ's were about 30% faster forwards, so the difference was too much on a soft sprung flexible crawler, whereas a standard clod would probably not show any / much difference.

If working on a converted (flexible) clod I would always recommend running zero timed (or 1 forwards and 1 reverse like Mag Mayhem) motors. That way they are as near to the same speed as necessary. I wouldn't ever run two advanced motors on a mod clod due to the issues described earlier.

All down to the individual. I still have a temptation to re-time them so that it stretches like a cat at times!!! []

[Lemming]

Just realised a possible error... [:I]

Mine are Super Stock TZs... They are definitely advanced. I am just realising that I am unsure whether Sport Tuned motors are advanced or not. [xx(]

From memory, I think that they are still advanced, just not to the same degree as something like the TZs... []

Have I just added to the confusion? C'mon Twinset, put us all out of our misery! You know more about Crawlers than I do! (also known as passing the buck...) []

Steve

[TWINSET]

MAYHEMS - that's all I know, I'm as much in the dark as the rest of ya (buck returned [8D])

http://www.tamiyaclub.com/xforum/topic.asp?TOPIC_ID=23931

[Lemming]

****... []

Thought I had got away with passing it!

Cheers though

Steve

[AndyjcClod]

OK thanks for that guys makes a bit more sence!

Its fixed based at the moment not a wire crawler. I may do that in the future but not for a while so by that time i'd replace the motors!

So someone want to be brave and give me a definitive answer on which two motors I should get to make my clod fly? Less expensive the better but if I have to I will pay a little more for the right motors!

[Lemming]

Check out the Traxxus Stingers at £13 before TC discount from Modelsport: http://www.modelsport.co.uk/?CallFunction=...ion&ItemID=1475

Also, motor test on showing options for Torque as well as speed: http://monster.traxxas.com/showthread.php?...t=dyno+shootout

Speed and power. All of these are more powerful than even the TZ motors. If you need to calculate the torque figures: http://www.norbar.com/internationaltorqueconverter.php

Normal (Tamiya) motors for comparison: http://home19.inet.tele.dk/martinjordt/res...tors/motors.htm

Hope this helps and doesn't confuse! []

Steve

[AndyjcClod]

Thanks Steve u r a star will post on here when I have fitted whaat I get and let you all know what happens

[AndyjcClod]

LOL sorry im gonna soudn liek a muppet but now I am a bit confused after looking at all those spec charts!!

So in lamers terms (its what I need)

Torque = Power (EG a Tractor)

RPM = Top Speed?

Am I right?

Also in lamers terms what should I put in my clod to make it both fast and powerful?

[BlazingDragon]

quote:Originally posted by AndyjcClod

LOL sorry im gonna soudn liek a muppet but now I am a bit confused after looking at all those spec charts!!

So in lamers terms (its what I need)

Torque = Power (EG a Tractor)

RPM = Top Speed?

Am I right?

Also in lamers terms what should I put in my clod to make it both fast and powerful?

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id="quote">id="quote">

Yep, you're almost there. Torque is twisting force, so it's an idication of what most people refer to as "pulling power", not technically "power"...

Power is torque * RPM, and is more indicative of potential top speed. Generally, the more torque a motor has, then the lower it's RPM, and conversely, most high RPM motors have poor torque. IMHO, it's better to talk about torque and max RPM than power when evaluating the suitability of a motor to a particular application.

So, for a big (heavy) truck you want a high torque / low RPM motor...

(and for a touring car or hi-speed buggy, you want the opposite - a high RPM / low torque motor).

Sorry for babbling. HTH.

[Pellandine-sports]

quote:So, for a big (heavy) truck you want a high torque / low RPM motor...

id="quote">id="quote">

Particularly when top end speed is governed by final drive gear ratio. The clod is not only heavy but has large diameter tyres and therefore needs the torque........the benefit of high rev motors is lost at the low end and likely to result in stripped pinions, spur gears or worse still a burned out motor if you rip open the throttle.

High torque low/intermediate rpm is the way to go....Clodzilla Poer-up motors of Magnetic Mayhem. Pays your money and take your choice.

C