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Guystill
2011.11.07, 03:59 PM
hello all...is there a motor the spins faster than 45000 rpm? if so which one?
Thanks for you help

LED
2011.11.07, 04:04 PM
all of them.
Unless its a typo and you mean 45000 RPM. Then, none I think

Here is a chart for the PN motors.
http://pnracing.us/productsphotos/motor-spec-sheet-100713.jpg

Guystill
2011.11.07, 04:33 PM
sorry was a typo.....really nothing exists above 45000? shame then i dont know how i can make this thing buzz more than 50kph....how do they get it so fast on youtube?

kryten
2011.11.07, 05:09 PM
My friend has a modified stock R that hits 55000 on the motor master. I'm not sure what has been done to it to achieve this though.

reaper
2011.11.07, 05:42 PM
i have one that hits 250,000rpm on the motormaster but it would melt a mini-z board :)

most motors run 25-42 k because this is the best usable range for the cars

thestug
2011.11.07, 08:36 PM
sorry was a typo.....really nothing exists above 45000? shame then i dont know how i can make this thing buzz more than 50kph....how do they get it so fast on youtube?

I know the become much faster on lithium batteries. The rpm listed on the chart is probably the normal 4 AAA voltage. I believe you can run 7.4 volt lithium with no major issues. The steering is the main problem at higher voltage. Also run FET stack with the lowest turn motor it can handle. An odd trick to get more rpm is to stick neodymium magnets to the outside of the motor can. Also run the tallest gearing you can with trued tires. I can't really think of much else right now. I'm not sure exactly why you would want a mini-z this fast other than to say say you did it. I can't really recommend all this unless you have deep pockets.

LED
2011.11.08, 03:57 AM
I would say the biggest tires you can find instead of trued tires.

thestug
2011.11.08, 05:34 PM
I would say the biggest tires you can find instead of trued tires.

Very true. Big tires, but you want to make sure there they are of consistent diameter. I meant consistent diameter no trued. Thanks for correcting me.

color01
2011.11.08, 08:00 PM
I just trued some GRP foams to 25mm... mounted on an F1 rear axle (wider offset = more stable) these would be the best tires for outdoor speedruns. The front tires should be rounded off to soften the steering response and reduce sudden movements.

As for getting RPM... the Plasmatomic (pioneered by ph2t IIRC) is the only motor I know of that can reliably hit 40mph on AAA's, and even that is pushing the limits because the motor (27t) draws a stupid amount of current. Running a milder motor (say, PN 32t) with lithium-polymer or LiFe batteries is a much smarter option and will probably get you a higher net speed due to greater torque at the high end.

A Plasmatomic on 7.4V, however, is a monster... ;)

thestug
2011.11.08, 09:17 PM
Does atomic still make the chilli motor? If I remember right it was quite a powerful motor. I could be wrong though. Does the motor have to be brushed? If not you could go brush-less and get over 45000 rpm easy. :cool:

Guystill
2011.11.09, 06:28 PM
they do and i have one, im very happy with it! i run with an unfetted mr03 and on the tamyia speed checker (not a true indicator i know but its a bench mark) it can do an easy 54kph. with lith ions batts im sure it goes quicker due to the extra punch. its the fastest motor i have

reaper
2011.11.10, 03:46 PM
they do and i have one, im very happy with it! i run with an unfetted mr03 and on the tamyia speed checker (not a true indicator i know but its a bench mark) it can do an easy 54kph. with lith ions batts im sure it goes quicker due to the extra punch. its the fastest motor i have

chilli and liths on a stock board ?????? no way

Guystill
2011.11.10, 06:52 PM
chilli and liths on a stock board ?????? no way

well i use 1.2 v 1300mah nimh for every day use and use 1.5 v alkalines (just realised my mix up) when they are on offer in the shops, ive never had a fet blow except when the wires from the motor somehow connected, but still run a chilli motor on a unfetted mr03 with out problems

reaper
2011.11.12, 10:24 AM
well i use 1.2 v 1300mah nimh for every day use and use 1.5 v alkalines (just realised my mix up) when they are on offer in the shops, ive never had a fet blow except when the wires from the motor somehow connected, but still run a chilli motor on a unfetted mr03 with out problems

sorry dude i dont want to have to call you out on this but.....

in your first post you stated that you run liths and a chilli on a stock board ....imposible it would melt the fets

in your second post you say your using 1300maH AAA's these dont exsit they may well say 1300 on them but trust me they arnt

just saying

Guystill
2011.11.12, 10:41 AM
i made a mistake before with the wrong name for the battery type but here is a link showing the exact ones i have, maybe theyre not 1300mah but they are better than the 970mah ones i have
http://www(dot)ricardo(Dot)ch/kaufen/modellbau-und-hobby/elektronik/akkus-und-ladegeraete/akku-4x-tamiya-aaa-nimh-batterien-1300mah-toppreisleistung/v/an650061738/