Author Topic: 1/3 scale V10 RC car.  (Read 939 times)

Offline keith5700

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1/3 scale V10 RC car.
« on: March 11, 2018, 07:02:38 PM »
Finally got round to starting a new thread for the car I'm making.
I decided I want the V10 to power something rather than sit on a stand.
As usual with my projects it's gone into fantasy land with the specification, but I think most of it should be do-able.
Brief spec......
1/3 scale radio controlled hybrid car/off road buggy.
125cc V10 fuel injected petrol engine.
Pushrod suspension, carbon wishbones and struts, titanium fasteners.
Hydraulic disc brakes all round, magnesium wheels.
Remote ride height adjustment.
Centrifugal clutch, carbon fibre propshaft.
5 speed transaxle, with limited slip differential.
2x 2kw brushless motors.
Adjustable exhaust, quiet/loud.

Not thought about the bodystyle yet.
I want to use lightweight materials where possible because, A, it's fun, and B, I estimated the weight at 40kgs, which is ridiculous, so it's ally, carbon fibre and titanium wherever practical (affordable).

This is where I'm up to as of today.......
I'll put some more pics up when I know this post works ok.



Offline keith5700

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Re: 1/3 scale V10 RC car.
« Reply #1 on: March 11, 2018, 07:08:20 PM »
The front suspension isn't finished, I just mocked it up today to check ride heights etc. The shock absorber mounting Spring thing is the anti-roll system, which seems to work ok, and it has the benefit of also being the variable ride height system, by pulling the spring rod in and out. If that makes any sense.
Drawings to follow, maybe.


Offline keith5700

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Re: 1/3 scale V10 RC car.
« Reply #2 on: March 11, 2018, 07:15:18 PM »
Still early stages, I reckon it's a 2 year project, unless I can retire in the meantime.
Any other specification suggestions welcome at this stage. I want this to be the best RC car ever.
I have 10 channel radio gear available.
The shocks will need external reservoirs. I would like to make them nitrogen pressurised but haven't investigated that yet.


Online crueby

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Re: 1/3 scale V10 RC car.
« Reply #3 on: March 11, 2018, 07:59:49 PM »
That looks incredible - going to be a fun one!

One thing on your specs is confusing me though - lists both a V10 petrol engine and 2 brushless electric motors - is this a hybrid? Worlds fastest Prius?

Offline keith5700

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Re: 1/3 scale V10 RC car.
« Reply #4 on: March 11, 2018, 08:43:00 PM »
Yes, from the start wanted to get an electric motor in it somewhere so I can easily drive it around for testing the chassis and steering, etc. without having the hassle of running the engine. But then I thought it would be cool to make it a proper hybrid with 5hp of electric motors.
Should get some nice wheelspin from it anyway.
It's rear wheel drive only by the way.

Online Vixen

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Re: 1/3 scale V10 RC car.
« Reply #5 on: March 11, 2018, 09:10:31 PM »
Hi Keith

That looks like some full size race car engineering but I know it is a 1/3 scale model. We need something to gauge the size of the car by. What is the outside diameter and width of the tyres (tires) and the length and width of the whole thing?

Mike  :popcorn: :popcorn: :popcorn:
It is the journey that matters, not the destination

Offline keith5700

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Re: 1/3 scale V10 RC car.
« Reply #6 on: March 11, 2018, 09:24:31 PM »
Yes, good point. I'll sort something out, cheers.

Offline keith5700

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Re: 1/3 scale V10 RC car.
« Reply #7 on: March 11, 2018, 10:03:15 PM »
Tyres are 10" diameter go kart wets.




Offline JC54

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Re: 1/3 scale V10 RC car.
« Reply #8 on: June 17, 2018, 10:38:37 PM »
 Now that is what I call AWESOME  :popcorn: :NotWorthy: :DrinkPint:

Offline Art K

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Re: 1/3 scale V10 RC car.
« Reply #9 on: Today at 02:45:38 AM »
Don't the original Mini's use 10 inch tires?
Art

Offline Jasonb

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Re: 1/3 scale V10 RC car.
« Reply #10 on: Today at 07:32:48 AM »
10" wheels on minis and quite a high aspect ratio of about 80. giving about 20-21" tread dia

Offline kvom

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Re: 1/3 scale V10 RC car.
« Reply #11 on: Today at 12:31:08 PM »
As we say in Georgia, day-um!   :NotWorthy:

Offline Allen Smithee

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Re: 1/3 scale V10 RC car.
« Reply #12 on: Today at 07:41:59 PM »
I'm sure you've already got this covered Keith, but of the outside chance that you haven't...

That centrifugal clutch - if it's of any interest I have a set of equations (and a half completed spreadsheet which implements them) to design a schluter-type solid clutch to transmit a given torque biting at a given RPM. I'm talking about the sort of clutch which is like an ordinary 2-shoe clutch but instead of being a made-up item with hinged shoes and springs the rotor is a solid metal disk with two holes and two slots to form self-sprung shoes (see attached sketch) for better strength and vastly improved reliability. The rotor operates inside a close-fitting bell and the friction lining is bonded to the inside of the shell rather than the shoes (much better cooling, stronger etc).

I did it for RC helicopters many years ago, but never finished the "tidied up" spreadsheet. If it would be of any value to you I would be proud to finish off the spreadsheet for you. Just say the word.

AS


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