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Lighter motor for a tc4?

Lighter motor for a tc4?

Old 04-19-2015, 07:01 PM
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Default Lighter motor for a tc4?

Hi everyone, I am looking for a lighter motor for my tc4 club racer. The track I run on is very short and tight, and I don't need all the power a 540 brushless motor has. I would like to run a 28mm motor or the like but I can't find one with the standard 25mm mounting hole spacing and a 3.17 shaft. Anyone have any ideas for a lighter motor setup. We only do like 5 minute fun runs so I don't need to run a full size lipo or motor. Or how about a thin adapter so I could run something like a velinion 380?

Thanks
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Old 04-19-2015, 07:31 PM
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Originally Posted by jtthebiggafigga View Post
Hi everyone, I am looking for a lighter motor for my tc4 club racer. The track I run on is very short and tight, and I don't need all the power a 540 brushless motor has. I would like to run a 28mm motor or the like but I can't find one with the standard 25mm mounting hole spacing and a 3.17 shaft. Anyone have any ideas for a lighter motor setup. We only do like 5 minute fun runs so I don't need to run a full size lipo or motor. Or how about a thin adapter so I could run something like a velinion 380?

Thanks
Why not save some weight by running a shorty pack?

https://www.google.com/search?sclien...=Google+Search

I fear u may lose torque and may smoke a little 380 motor.
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Old 04-19-2015, 07:59 PM
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Your better off getting a lighter battery than a lighter motor. Using a smaller motor at its limit will generate a lot of heat where as a standard motor geared very conservatively with low motor timing will run very cool and will last a long time. There are other more economical and better ways to save weight such as light weight body shells, titanium/aluminium screw sets and even your wheel/tire choice. Please share with us more info on your setup
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Old 04-20-2015, 10:36 AM
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The best way is to select the lightest 540 motor, and change all the steel screws to titanium...
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Old 04-20-2015, 12:58 PM
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I saved around 17 grams just switching to Associated aluminum screws on my TC3. I imagine it would be similar on the TC4.
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Old 04-20-2015, 03:15 PM
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You could try an outrunner. Out runners produce more power than a similar weight/sized inrunner motor so you can get away with running a little smaller motor. The 26/28 mm outrunners are very popular in mini 8ights. They're unsensored but usually 6+ poles so they run very smooth. Just make sure your esc can handle the rpm×poles.

Couple that with a shorty pack, ti screws and turnbuckles you'll have yourself a lightweight rocket
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Old 04-21-2015, 10:13 AM
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Stick to conventional components, you will be glad you did.

A shorty lipo and a high turn motor will give you what you need without having performance issues.

If you are just playing around, why try to make the car super light? If you intend to race, your car will be illegal unless you run the required power equipment type.
I'm a little confused as to what your motivation for doing this is.
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Old 04-21-2015, 10:25 AM
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Have you considered adjusting your FDR to something suitable for your track?
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Old 04-21-2015, 11:15 AM
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I guess I should have been a little more clear about what I intend to do. I have a local indoor carpet track with jumps, and our racing is just a run what you brung type deal. I am definitely going to run a smaller battery, probably a 2 cell or 3 cell in the 2000mAh range. I am jumping this car and it does ok considering what it is but the lighter the better. It seems like my best choice will be to adapt a 450/500 heli outrunner in the 3500kv range. It is a small track and I don't need a lot of top end gearing. The chassis itself is so light already I think this will be a nice light setup. Definitely not legal for class racing, but we don't have that around here.
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Old 04-21-2015, 11:39 AM
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Originally Posted by jtthebiggafigga View Post
I guess I should have been a little more clear about what I intend to do. I have a local indoor carpet track with jumps, and our racing is just a run what you brung type deal. I am definitely going to run a smaller battery, probably a 2 cell or 3 cell in the 2000mAh range. I am jumping this car and it does ok considering what it is but the lighter the better. It seems like my best choice will be to adapt a 450/500 heli outrunner in the 3500kv range. It is a small track and I don't need a lot of top end gearing. The chassis itself is so light already I think this will be a nice light setup. Definitely not legal for class racing, but we don't have that around here.
TC4 will not handle any jumps, I think off road type vehicle is more suited for you in this case and you won't keep braking parts. Or maybe if the jumps are small you can try a rally type chassis like xv01
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Old 04-21-2015, 01:08 PM
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A small helicopter motor powered by a soft case 3S lipo inside a TC4 that you intend on jumping... sounds a lot like using a kitchen knife to do open heart surgery. Probably not the best combination, but power to ya. Tell us how it turns out.
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Old 04-21-2015, 03:30 PM
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I have plenty of off road rc cars, this is just for fun. My fastest/most fun car on the track besides my losi 22 is my rc18r, but the wheels are too small and the car gets upset by the tiny ripples that have formed at various places around the track. You would be surprised how well a flat car with no suspension will jump on a carpet track. With 4wd you can downside the tables and doubles nicely. The flat landers are a little rough but hey, it's a $149 chassis. Thanks for the input guys!
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Old 04-21-2015, 05:50 PM
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Sounds awesome to me. Looking forward to hearing some feedback from an outrunner in a 1/10 scale. As I said before I know they perform quite well in 1/14 buggies.
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Old 05-10-2015, 09:58 PM
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Just waiting on my buddy to mill out a couple of motor mount adapters and I'll let you guys know how it works. I have a couple of 3500-4000 kv outrunner motors from 450 size quads and those pull 2200mah in 5 min so the power output should be decent. Not crazy but hopefully fun.
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Old 06-09-2015, 09:36 PM
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Got a 3700 kv outrunner mounted up with a 3 racing motor mount adapter. Hobbywing ezrun 35a esc and 3s 2200 lipo. All up weight no body 1186g. Seems good on my hardwood floor drifting around, can't wait to try it on the local indoor carpet off road track. We shall see.
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