RC cars

PinkFloyd · 14 Jan 2024 at 09:50

I've seen various calculators for converting brushed to KV - but they often provide diffferent results to each other. I've not read up on it enough to really understand why. I think they'd probably work as a reasonable guideline though.

BongoHunter · 14 Jan 2024 at 16:08

Lumeycom said:
Thanks for this Looks ideal. One question, do you know if its possible to estimate turns on a brushed to KV?

That's tricky - there's no exact conversion possible, many of the conversion charts availble are very old as well which doesn't help as brushless motors have improved massively in the last 10 years.

Old info but Novak (before they closed down) used to say their 3300KV motor was equivalent to a 13.5 brushed modified motor, and 4400KV was around about a 10T.

Confusingly - sensored brushless motor are also sold with Turn rating rather than KV ratings. Hobbywings latest competition 6.5T motor is about 5200KV, the 7.5T version of the same motor is 4400KV....

So it's anyone's guess really!

the shadow · 14 Jan 2024 at 16:41

Any good with adaptor ?

Time Tunnel Models

www.timetunnelmodels.com

BongoHunter · 14 Jan 2024 at 17:01

the shadow said:
Any good with adaptor ?

Time Tunnel Models

www.timetunnelmodels.com

That looks fine for a NiMH

I'd go for a Lipo if you can - they are much lighter, and availble in packs with rounded corners if thats all that will fit in your car. E.g: https://www.modelsport.co.uk/produc...8JC2WmSCt14a50di0ibvz2Bm4k6LJLqRoCyHIQAvD_BwE

the shadow · 14 Jan 2024 at 17:05

BongoHunter said:
That looks fine for a NiMH

I'd go for a Lipo if you can - they are much lighter, and availble in packs with rounded corners if thats all that will fit in your car. E.g: https://www.modelsport.co.uk/produc...8JC2WmSCt14a50di0ibvz2Bm4k6LJLqRoCyHIQAvD_BwE

Lipo i think at this time i will give a miss
Will the cheapest 6kg servo do ?

MOOGLEYS · 14 Jan 2024 at 17:24

For LiPo’s Amazon are far cheaper. I have a nice selection of Hoovo packs and they are really good and last well.

I had a quick go with the Vorza on 6s today. It’s far too much power even with the throttle rate turned down. 4s is a much better drive.

BongoHunter · 14 Jan 2024 at 17:26

the shadow said:
Lipo i think at this time i will give a miss
Will the cheapest 6kg servo do ?

Servos can be a bit hit and miss - this is the cheapest one I recommend: https://www.racing-cars.com/radio-gear/servos/core-rc-9016mg-servo-9kg-16-sec-cr494

Lumeycom · 16 Jan 2024 at 19:06

BongoHunter said:
That's tricky - there's no exact conversion possible, many of the conversion charts availble are very old as well which doesn't help as brushless motors have improved massively in the last 10 years.

Old info but Novak (before they closed down) used to say their 3300KV motor was equivalent to a 13.5 brushed modified motor, and 4400KV was around about a 10T.

Confusingly - sensored brushless motor are also sold with Turn rating rather than KV ratings. Hobbywings latest competition 6.5T motor is about 5200KV, the 7.5T version of the same motor is 4400KV....

So it's anyone's guess really!

Thanks again, much appreciated

BongoHunter · 16 Jan 2024 at 21:15

New Team Associated competition car inbound: https://www.associatedelectrics.com/teamassociated/cars_and_trucks/RC10B7/Team/

UK stock expected mid Fed

BS Dave · 16 Jan 2024 at 21:27

BongoHunter said:
Servos can be a bit hit and miss - this is the cheapest one I recommend: https://www.racing-cars.com/radio-gear/servos/core-rc-9016mg-servo-9kg-16-sec-cr494

I have this one in my plasma edge 2. The only thing is to make sure your ESC can provide the servo with at least 3A. It'll work lower than than but not well. If your ESC doesn't provide 3V you can always wire in a BEC which you can buy off eBay for about a fiver

BS Dave · 16 Jan 2024 at 21:31

BongoHunter said:
Anything from this page would be more than good enough: https://www.rcbearings.co.uk/index.php?route=product/product&product_id=1748

Edit: Make sure you have a JIS screwdriver rather than a regular Phillips when assembling Tamiya cars without hex screws - or its easy to strip the heads

RC bearings do some good washers/shims you can use to sort out play around the wheels and suspension arms too

BS Dave · 17 Jan 2024 at 13:54

Sorry. I'm aware I'm spamming the thread but I have some Tamiya BZ Superstock brushed motors for sale here if anyones interested. BNIB

https://forums.overclockers.co.uk/threads/tamiya-super-stock-motor-23t-type-bz-x3.18983234/

the shadow · 17 Jan 2024 at 15:33

Thanks for the advice not too many compromises made :cool:

hyperseven · 17 Jan 2024 at 19:23

MOOGLEYS said:
For LiPo’s Amazon are far cheaper. I have a nice selection of Hoovo packs and they are really good and last well.

I had a quick go with the Vorza on 6s today. It’s far too much power even with the throttle rate turned down. 4s is a much better drive.

cheaper than HobbyKing?

the shadow · 30 Jan 2024 at 16:02

Tamiya 47446, 1:10 RC Plasma Edge II GunMet. TT-02B 300047446 Remote Control Car Model Building Kit DIY Hobby Crafts, Black | hotukdeals

www.hotukdeals.com

PinkFloyd · 30 Jan 2024 at 21:16

Bargain, probably for the best I only just spotted this!

Think I'm going to be buying a new Basher soon. Saw TomleyRC's video on the new Maverick Quantum2, and how much better it is than the Quantum that I've got, and I'm wanting to get out again after a year off only really driving miniature scale crawlers. Did look into fixing my Quantum, but I need new tyres, the bearings are all siezing, I've got some damaged bits of suspension and one off the diffs is sounding rough. Plus nearly ever time I drive it I damage the drivetrain, or have it work itself loose. Just gonna cut my losses and buy something better.

Not sure that I'll get the Quantum2, waiting to see some more reviews. The early previews suggesting it's a bit nosy heavy on jumps is disapointing considering how otherwise excellent it looks for bashing. MT10 is the other key contender, even though I don't like the body on it.

MOOGLEYS · 30 Jan 2024 at 21:49

MT10 is a superb car mine has been well and truly bashed and is still going strong.

Brun · 30 Jan 2024 at 22:04

Bought an Avante to amuse myself during lockdown. Combined it with an equally nerdy hobby and built a virtual version as well...

PinkFloyd · 30 Jan 2024 at 22:32

MOOGLEYS said:
MT10 is a superb car mine has been well and truly bashed and is still going strong.

Yeah I know they're bomb proof. I've driven a mate's and wasn't super blown away by the way it drove compared to my Maverick though - it wasn't bad by any means, I just expected more compared to what I had. The brake was really snappy too and apparently you can't change the braking on the ESC. But I guess even if that is the case I'd get used to it eventually.

Great work Brun. The Avantes are awesome looking things

MOOGLEYS · 30 Jan 2024 at 22:45

PinkFloyd said:
Yeah I know they're bomb proof. I've driven a mate's and wasn't super blown away by the way it drove compared to my Maverick though - it wasn't bad by any means, I just expected more compared to what I had. The brake was really snappy too and apparently you can't change the braking on the ESC. But I guess even if that is the case I'd get used to it eventually.

Great work Brun. The Avantes are awesome looking things

Was it on 3s ? They are quite tame on 2s but on 3s they liven up a fair bit. Not tried changing the braking on mine so no idea if it’s possible.

The new Maverick does look good and at £249 could be a bargain. I do like HPi cars I have the Vorza buggy and the Savage XS Flux which is just completely bonkers tbh.