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Track is great. But some bigish features that resulted in the occasional cartwheel. Popped a rear balljoint a couple of times but otherwise the car took it.
Returned to the relative safety of DMS's carpet racing yesterday only to have the rear hinge pins pulled out in two separate incidents; DNF'd practice and the final, but the heats in-between were good and didn't qualify DFL.
TD chassis is tough but my feel is the front is significantly tougher than the back.
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Qualified DFL but had a couple of good battles in the two final legs and finished 2 places up the field. Also finished all rounds and 25 minutes of practice so I'll take that as a win.
Set up changes made the car more comfortable on the lumpy sections. Still a bit nervous over the larger table top jump but I suspect my timing on the throttle could be improved.
The car was calmer in the infield bordering on very lazy steering. I'm going to lower the front ride height a touch and further stiffen up the front end to see if that gives it a little more turn in angle. I'm also running the rear diff looser than the front which I might try to balance up a little.
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Experience from real cars:
Stiffening up the front end will make it tend to want to understeer. Softening the rear will have the same effect, but will make the car tend to squat out of bends and you’ll be able to put the power down harder. If you’re wanting to stiffen the front, be sure it’s not because you’re trying to mask the back end being too stiff.
Lazy-feeling steering may be too much toe out. If you want to sharpen up the turn in, add a bit more toe in at the front.
You should be able to run the rear diff fairly tight. What you don’t want to be doing is masking poor handling by inducing slip on the inside rear wheel. You’ll be losing acceleration out of corners when you do that. See the first point, if the back end is too stiff, are you running the rear diff loose because otherwise it’s oversteering on acceleration out of bends? Maybe the rear end needs softening to make it dig in more.
Do one thing at a time.
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Ta!
The rear damping is quite soft at the moment, but the rebound feels quite fast and linear so assume a softer spring rate would be the thing to try if did want to soften it further? My instinct was to source a softer spring and drop from three piston holes to two. But not right now.
Intention with the ball diff set up was to start from a neutral to understeer baseline then go from there. I guess I've achieved that now whilst having a composed car on the bumpy stuff.
Of the settings that feel the most 'extreme' the front diff is quite tight, so maybe that's the place to start by backing that off a touch. I learned last night that most folks run ball diffs on this track as it's so lumpy. I assumed they were all running gears but nope.
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My first kit build ready for a test run
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It’s a bit rough in places but it will probably get trashed in the first run anyway!
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Feel free to point out any mechanical errors that will make it not work!
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Nomness.
I did see a wagon drift variant for my TL-01.
https://www.instagram.com/reel/C612yWfyGa2/?igsh=MTJsbzdzanUzdWo1cQ==
Much tempting.
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Thanks, I really enjoyed the build. I'm glad to have it finished though. The motor and esc is a Hobbywing Max 10 combo 4100kv. I had a quick test run yesterday. It was quiet and smooth in running. Plenty of power and speed for me on the stock pinion, I flipped it a few times. Great fun indeed.
One thing I wasn't sure about was how tight to do up the ball diff and slipper clutch but hopefully I have got it about right as it seemed to run fine.
Howard
Jonny69
Ordinata
Matisse
Se13cyclist
Ben689908
ELbowloh-
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Tamiya
Posted by
@slaytanic1
TB04 now has a body.
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