Backwards Rustler?   
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
    Search This Thread  
 
Printable Version

All Forums >> RC Cars, Buggies, Trucks, Tanks and more >> RC Electric Off-Road Trucks, Buggies, Truggies and more >> Backwards Rustler?
Page: [1]

Login
Message << Older Topic   Newer Topic >>
Backwards Rustler? - 11/20/2009 7:46 PM   
Access


 

Posts: 4674
Score: 151
Joined: 3/8/2005
Last Login: 3/21/2010
From: , CA, USA
Status: offline 		I'm curious if anyone has ever tried anything like this. Basically the intention is to build an open-wheel vehicle (one based on a RTR/Kit truck, buggy, truggy, etc.) solely for the purpose of straightline speed on a perfectly flat, level track. The idea I was toying around with was to take a ST like the rustler that has no rear toe-out and run it 'backwards'. So you have the drive wheels in front, rear wheels are used only for steering, motor in front of the wheels and a battery that is pretty far forward in the body. Lower the shocks, probably leave the wheelie bar on to protect the motor and the motor mount in the event of a crash and to stop it from bottoming out. The problem most trucks like the rustler have is they are wheelie prone and unstable when you get up into the 70+ mph range. So a 'reversed' setup like this would be front-wheel drive and have most of the weight in front, not have to worry about wheelies, be more resistant to turning at extreme speed and so on. Anyone ever tried something bizarre like this?

Hide Signatures
       Post #: 1

RE: Backwards Rustler? - 11/20/2009 8:12 PM   
redfisher1974



Posts: 3582
Score: 308
Joined: 5/21/2008
Last Login: 3/21/2010
From: Palmerston, ON, CANADA
Status: online 		alot of spare time on your hands

_____________________________

HPI E-Firestorm, Tamiya CC-01 Land Cruiser

Hide Signatures

(in reply to Access)
       Post #: 2

RE: Backwards Rustler? - 11/20/2009 8:48 PM   
Brainanator



Posts: 1086
Score: 105
Joined: 6/14/2009
Last Login: 3/21/2010
From: Butte, MT, USA
Status: offline 		When I got fast in reverse with my slash it wobbles...that might be due to a weak steering servo though.

_____________________________

slash MM 4600

Hide Signatures

(in reply to redfisher1974)
       Post #: 3

RE: Backwards Rustler? - 11/20/2009 10:44 PM   
rebuilder



Posts: 1917
Score: 125
Joined: 1/10/2008
Last Login: 3/19/2010
From: Ark, AR, USA
Status: offline 		It will be uncontrollable with rear wheel steering at any mid to high speed.

_____________________________

When in doubt, Overvolt it!

Hide Signatures

(in reply to Brainanator)
       Post #: 4

RE: Backwards Rustler? - 11/20/2009 11:11 PM   
BigTb17


 

Posts: 977
Score: 125
Joined: 2/12/2008
Last Login: 3/20/2010
From: Perrysburg, OH, USA
Status: offline 		I agree with rebuilder, stability at high speed will be very hard to maintain with rear wheel steering. With front wheel steering the front of the car has to pull away from it's direction of momentum for the vehicle to turn. With rear wheel steering the back of the car will be swinging forward somewhat (in the direction of the momentum it already has) and it will be very easy to spin out ("J" turns anyone ). You may be able to reduce this with low steering rates or a lot of expo. If all that is needed during the run is very small corrections to the line it may work.

You may run into another problem. Instead of the torque overwealming the weight of the front and pulling a wheelie, it may simply break traction and spin the tires.

Either way, if you try it definitely post your results.

Hide Signatures

(in reply to rebuilder)
       Post #: 5

RE: Backwards Rustler? - 11/20/2009 11:41 PM   
Access


 

Posts: 4674
Score: 151
Joined: 3/8/2005
Last Login: 3/21/2010
From: , CA, USA
Status: offline 		Basically the idea is that I won't be turning once I get up to speed. Only going perfectly straight. Maybe some really small adjustments but the track itself is perfectly straight. Dual rates on the controller if that's what it takes.

Normally you try to build a truck that has 'good handling', ie. that can turn well and at speed if you want it to. But this is kinda the reverse, trying to build a truck that is engineered to go straight and straight only (not turn at all). So that diff and everything would be locked.

Also I should have pleanty of time to get up to speed. Should be able to feather that throttle and keep that front traction good.

Hide Signatures

(in reply to BigTb17)
       Post #: 6

RE: Backwards Rustler? - 11/21/2009 12:31 AM   
hands without shadows



Posts: 6854
Score: 121
Joined: 11/23/2005
Last Login: 3/20/2010
From: Lakeside, ON, CANADA
Status: offline 		With a small servo horn, bearings in the bellcranks, dual rate, and quality ball joints you would eliminate much slop and sensitivity. It should be stable. I am assuming you will lengthen the frame.

_____________________________

My love for riding is greater than my fear of injury.

Hide Signatures

(in reply to Access)
       Post #: 7

RE: Backwards Rustler? - 11/21/2009 2:03 AM   
rebuilder



Posts: 1917
Score: 125
Joined: 1/10/2008
Last Login: 3/19/2010
From: Ark, AR, USA
Status: offline 		It might work with very low ratio steering, and a looooooooooooooooooooong wheelbase.

_____________________________

When in doubt, Overvolt it!

Hide Signatures

(in reply to hands without shadows)
       Post #: 8

RE: Backwards Rustler? - 11/21/2009 8:28 PM   
OvalRacer99



Posts: 272
Score: 100
Joined: 7/6/2009
Last Login: 3/20/2010
From: Watertown, SD, USA
Status: offline 		The biggest problem I see is in the geometry of the front suspension. It is set up to go forward, if you go in reverse, it becomes highly unstable. The caster is set negative to make it want to go strait and it makes it easier to drive. Turn that around and you get th opisite effect. Interesting theroy though.


_____________________________

Question with boldness, speak without fear, hold to the truth!!

Hide Signatures

(in reply to rebuilder)
       Post #: 9

RE: Backwards Rustler? - 11/21/2009 10:07 PM   
gelbschnee



Posts: 468
Score: 100
Joined: 6/15/2009
Last Login: 3/21/2010
From: Gretna, NE, USA
Status: offline 		personally id like to see it done, sounds like it could be a type of vehicle to set record speeds with, etc. you're going in the right direction

Hide Signatures

(in reply to OvalRacer99)
       Post #: 10

RE: Backwards Rustler? - 11/22/2009 2:21 AM   
warheadforever



Posts: 3140
Score: 103
Joined: 1/6/2008
Last Login: 3/18/2010
From: South, FL, USA
Status: offline 		Well, so far, everyone has forgotten one thing.... the Rustler is normally rear wheel drive, you flip it, and it is now front wheel drive.......... Sooooooooooooo it is impossible for it to do a wheely....the rear (use to be front) wheels are free wheeling.

_____________________________

I''m still alone, I''m still alive, I''m still unbroken
You can call me lost I call it freedom!

Hide Signatures

(in reply to Access)
       Post #: 11

RE: Backwards Rustler? - 11/22/2009 2:55 AM   
rebuilder



Posts: 1917
Score: 125
Joined: 1/10/2008
Last Login: 3/19/2010
From: Ark, AR, USA
Status: offline 		I wasnt aware he was trying to do wheelies...........................just to go really fast in a straight line.

_____________________________

When in doubt, Overvolt it!

Hide Signatures

(in reply to warheadforever)
       Post #: 12

RE: Backwards Rustler? - 11/22/2009 3:13 AM   
Brainanator



Posts: 1086
Score: 105
Joined: 6/14/2009
Last Login: 3/21/2010
From: Butte, MT, USA
Status: offline
quote:

ORIGINAL: warheadforever

Well, so far, everyone has forgotten one thing.... the Rustler is normally rear wheel drive, you flip it, and it is now front wheel drive.......... Sooooooooooooo it is impossible for it to do a wheely....the rear (use to be front) wheels are free wheeling.

who forgot that? and it could still blow over backwards from the speed.

_____________________________

slash MM 4600

Hide Signatures

(in reply to warheadforever)
       Post #: 13

RE: Backwards Rustler? - 11/22/2009 3:54 PM   
rclugnut10



Posts: 4111
Score: 173
Joined: 4/12/2008
Last Login: 3/21/2010
From: Hinsburg , VT, USA
Status: offline 		like everybodies said you'd need next to NO slop in your sterring and you'd almost need a locked diff...

imo you'd be better off with a 1/8 buggy with a wing up front and a locked center and no rear drivetrain parts

the lug

_____________________________

HPI SAVAGE X SS, DTX EVADER PRO,AE RC10B4, E Choas, Evader B2 Diff Mod Go To Page 646, # 16148 of T.E.C.

Hide Signatures

(in reply to Brainanator)
       Post #: 14



Page:   [1]
All Forums >> RC Cars, Buggies, Trucks, Tanks and more >> RC Electric Off-Road Trucks, Buggies, Truggies and more >> Backwards Rustler?
Page: [1]





Jump to:


 
Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

© 2001 - 2007 24-7 RC, LLC, all rights reserved.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America


1.078RCU1