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« Reply #50 on: May 10, 2014, 08:14:33 PM »
AnjanBabu
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Thanks to my friend Madan Kumar for the picture. Grin

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Re: G3 Sinister Saint - Sweepstakes 2014 [Build Log]
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« Reply #51 on: May 10, 2014, 11:41:56 PM »
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 The exposed wheels look cool but they are a bane.
You may solder a piece of thick metal wire in front of the car to protect the wheels..I ruined two cars running them without the guard.
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« Reply #52 on: May 11, 2014, 08:46:52 AM »
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Yeah, I'm planning to add a piece of aluminium and make some foam bumper until I learn to drive properly.
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« Reply #53 on: May 11, 2014, 12:55:06 PM »
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Great one Anjan . This looks awesome . Waiting for the video  Thumbs Up
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« Reply #54 on: May 11, 2014, 01:47:44 PM »
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Fantastic job Anjan :-) i know how tough is that sheet metal job, you need a right skill and right tool. really great job.
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« Reply #55 on: May 11, 2014, 04:33:16 PM »
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Dhruva and Nithinraj, Thanks! Grin

Video finally!

70% Steering EPA
75% Steering D/R
20% Throttle Exponential

Sorry for the slow speeds, I didn't want to crash the car trying a fast run.
Running at less than 20% throttle in the whole video.

« Last Edit: May 11, 2014, 06:43:13 PM by AnjanBabu » Logged

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« Reply #56 on: May 11, 2014, 04:57:44 PM »
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I managed to do a 40-45kmph run on a road, hit the lip of a manhole and the car flew 3m and landed upside down, no damage, just glad I didn't have the body shell on.

I will post another video with the body.
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« Reply #57 on: May 11, 2014, 09:55:41 PM »
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@anjanbabu
Somewhere along the line, we all forgot the need for brakes?
Run it in reverse and compare the handling.
Your driver can't see anything thru the black windscreen anyway...
Perhaps you can quickly make a racing autorick body Grin
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« Reply #58 on: May 11, 2014, 10:38:09 PM »
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Iyer sir, the car was about 50m away and I couldn't see properly, gave it a good right steer and it went over the manhole and so on.

It decelerates pretty quickly, doesn't really need brakes.

Running it in reverse is so weird, doesn't turn well, a lot of under steer.

I can count at least 10 autorickshaws every 100m in Bangalore, not another one. Grin
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« Reply #59 on: May 11, 2014, 10:52:54 PM »
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No.
The real point is
Shoiuld autos run the other way?
Which one is more stable?
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« Reply #60 on: May 11, 2014, 11:09:08 PM »
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You can tell the rear loses traction easily at speed. Had the CG been higher, you could've recreated TG's reliant robin stunt. Grin



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« Reply #61 on: May 11, 2014, 11:17:35 PM »
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Iyer sir, Autos should run the way they should, but I didn't mean to build one. Cheesy

Autos have front wheel steering, but when i reverse config my car, steering happens in the rear end. So understeer.

Either way, I think this is more stable than auto config because, autos tend to tip over on two wheels while cornering at fast speeds, but my car has better grip on the front end and no chance for tipping since it's only one wheel at the back and it has to be going must faster than an auto config to roll over while cornering. I could be wrong, but from what I've seen and learnt, a single front wheel vehicle needs tilting of the body to keep its balance on high speed cornering. I guess the physics is duly understandable without geekish research papers. Grin

Gandhar, I'm running worn out slicks on concrete. I did some high speeds runs and it spins out dangerousy. it takes off like a dragster on tiles with clean tyre surface though.
I think it will do better with some treaded tyres, planning to order some wide buggy wheels. Any suggestions? A link will help better!
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« Reply #62 on: May 11, 2014, 11:28:15 PM »
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Put some weight over the back wheel. IMO treaded tires will not make much of a difference. If you switch over to a softer compound, it may work. But softer tires wear out quickly.. Anyways people use slick tires on dry tarmac as they provide better traction over treads Tongue
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« Reply #63 on: May 11, 2014, 11:30:23 PM »
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Play with the weight distribution. In my experience that is the easiest way to set up handling on these diy rc cars..
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« Reply #64 on: May 11, 2014, 11:36:31 PM »
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Trishit, slicks lose traction when dust and dirt gets on the tyre surface. I'm using Sweep Racing's soft slicks, is just used up too much, I can see the fabric inside now.
I tried to shift the weight rearwards as much as possible, not helping there. Even shock is set to minimum tension.
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« Reply #65 on: May 12, 2014, 06:33:17 AM »
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You can try foam tires. I think wheel sizes will be the same as standard 1:10 tc wheels. As a 'band aid fix', spray a little wd40 on the tires. They soften up after a while. If you find the time, you can make some tire warmers. Grin

Foam tires will grip really well but will get beat up on rough surfaces and they'll start losing matter in chunks.

As for buggy tires, race treads will wear out very quickly. I think they're best avoided.

I'll PM you the link.
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« Reply #66 on: May 12, 2014, 12:07:57 PM »
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I think I'll just get some treaded touring car wheels and try them on, if I can do high speeds straight runs and 40kmph circuit runs, its good enough.

I used to clean these slicks with brake cleaning fluid, but dirt gets picked up and it loses traction soon.
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« Reply #67 on: May 12, 2014, 01:09:31 PM »
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Anjan i must you have done a fantastic job on this and sorry i couldn't comment on your build till now but this is awesome congo Smiley

Regards
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« Reply #68 on: May 12, 2014, 01:22:15 PM »
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Thanks, Yash! And no problem.  Thumbs Up
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« Reply #69 on: May 12, 2014, 02:10:58 PM »
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Great work Anjan
Came out really well.
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« Reply #70 on: May 12, 2014, 03:55:42 PM »
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Thanks, Manoj. Smiley
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« Reply #71 on: May 14, 2014, 11:04:13 PM »
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Video with the body shell on!

I dared to push it a bit faster than in the previous at the cost of running it into a wall later on that evening. Grin

www.youtube.com/watch?v=hnJMHWQKc20&feature=youtu.be
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« Reply #72 on: May 15, 2014, 09:04:06 AM »
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Cool Grin Go to a bigger rear wheel and fix your steering. One of front wheel looks to be a little off..
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« Reply #73 on: May 15, 2014, 09:42:14 AM »
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Fantastic build Anjan!
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« Reply #74 on: May 15, 2014, 10:25:34 AM »
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@anjanbabu,
If Lamborgini ever build a trike, this is what it will look like!
Just saw your video.
I suspect she can go MUCH faster.
But you will need far more space, like a tennis hardcourt with the net removed.

BTW, it does oversteer with power, ie, tail drifts out and nose turns in.
Perhaps you can consider trying high expo (70%?) on steering...

(Had made one like this with a Cox .049 and 6x3 prop about 25 years ago. With my son's He Man as driver, as reminded by ashok baijal in one of his posts)
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