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Post by Dave Chamberlain on Nov 25, 2015 12:36:52 GMT
Glad you found it the same Ian, haven't corrected the adjustment yet as it was getting late but I suspect close to another 5mm will get close to a neutral toe
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Post by Dave Chamberlain on Nov 26, 2015 7:20:43 GMT
So after the first couple of quick runs last night Ian, I'd say it was looking promising??
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ianlloyd
Lapping the Back Markers
Posts: 932
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Post by ianlloyd on Nov 26, 2015 8:42:51 GMT
Well.....the first run was dissapointing, I guess you really want any new car to be absolutely planted first time out but this never seems to happen does it. Bear in mind the car was built to kit spec with only the rear toe in blocks at 3 degrees (an option part supplied in the kit!) rather than the kit 2 degree and I had fitted softer rear springs. The first run saw the car very tail happy, quite quick which was good but if not undriveable then very scary. Any amount of throttle would see the tail come out and quite suddenly. That was though in fairness, on a newly laid track that no other cars had run on and as we know, the grip comes up as the evening goes on. So the important thing for this test was to see if the car would work OK without having to buy loads of extra bits, hop ups etc so the only changes I was going to make was to set up. Firstly I turned the amount of steering down on the transmnitter. I believe the problem with the car is too much front end that is unsettling the rear rather than a total lack of grip in the rear so worked on that premise to begin with. Turning the steering down certainly helped a lot but was not enough on its own. Next moving front and rear shocks in several holes at the top. That made the car much better as you saw. Last thing I did was change the front springs to fairly hard Associated springs and as they were a bit longer than the standard springs I removed the ride height c clips. This was the last test and as you said, the car was certainly a much better car and you could get it around the track quite quickly. It was still "edgy" and did not feel safe enough to really push hard, you had to be on it all the time but was a huge improvement over the first run. I am also fairly sure the stock servo saver is too weak, the steering just felt it was not quite centralising quick enough out of corners and was leaving some lock on when you hit the power which may have been causing the rear to be loose. Will change that for next week and as most cars do not come with a servo saver I feel allowed to change that! Might try the kit rear springs as well, yes I know that goes against everything else but just need to see if it balances the car or not, kit springs being quite hard and the same front and rear.
Next week will put the car on the set up board and check how it looks. Tim suggested I decrease the droop on the front from kit settings so will change that. Will also try some good tyres as was running fairly worn ones last night and might try a different shell as I know that shell, even on the X Ray was not particulary good but I felt if I could get the car to work with that shell it should be really good with a decent one? Well we live in hope!
So, I feel, as you say Dave, the car is promising but still needs work. I had quite a few bashes with the barriers during testing and everything still looks OK. Check the steering throw when building it Dave as I had to extend the turnbuckle that links the steering to the servo to about 5mm more than the manual says to enable correct steering throw left and right. The front belt is still very tight and a little worried that it is tweaking the chassis but will find that out when I put it on the set up board later. Apart from that we are looking forward to next week and part two of the test.
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Post by Dave Chamberlain on Nov 26, 2015 17:25:39 GMT
Good feedback Ian... I'll have Martins TD10 finished by our next meeting so we will be using your findings to try and get it hitting the track in a race worthy condition!
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ianlloyd
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Post by ianlloyd on Nov 26, 2015 21:01:49 GMT
One thing I have noticed tonight and that is the wheelbase of the TD10 appears to be only 250mm which is quite short, normally you would expect 257mm so will be making it a bit longer for next week to see what happens. Should help the rear grip for sure.
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Post by Dave Chamberlain on Nov 28, 2015 17:30:57 GMT
Interesting Ian, let me know what you do to get the extra 7mm out of the chassis
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ianlloyd
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Post by ianlloyd on Nov 30, 2015 10:05:34 GMT
Not easily Dave, all you can do without major surgery is move the arm spacers to the front. Adds about 4mm to the wheelbase which should make a difference. We will see.
Have replaced the servo saver, moved the arms back to increase the wheelbase, adjusted the droop settings and have looked at the suspension as really would like to use standard springs. The rear appears to be fine if you remove the spacers and just use standard length Tamiya springs but oddly if you do that to front you get a ride heihjt of 10mm! Will strip the shocks and add some spacers inside to shorten them and see if that helps. Going to try a standard set up on Wednesday of blue fronts and yellow rears. Works with most cars so hopefully will work with this. Have also gone for a slightly thinner oil in the rear diff as was a bit tight.
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Post by Dave Chamberlain on Nov 30, 2015 12:35:50 GMT
OK Ian thanks,
didn't get any time on Martin's car over the weekend so it's back on the bench tonight to finish off the mechanics and tomorrow night for the electrics!
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Post by Dave Chamberlain on Dec 1, 2015 7:18:40 GMT
OK so Martin's TD10 is almost complete, just need to build and fit the shocks and finish off the wiring so shouldn't take to long tonight.. Over all as Ian found the car goes together very well and could be built in a full day if you have one spare! Martin has gone for a 17.5 setup so I didn't need to modify the motor mount However as with a lot of cars you need to cut and shorten the cables to the receiver and the motor to make the installation looking tidy..
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Post by Dave Chamberlain on Dec 2, 2015 7:08:13 GMT
Well finished off Martin's TD10 last night and it looks very good, wiring was left at standard lengths until I discuss with Martin if he wants it shortened.. We need to fit a pinion, bind his radio, trim out the steering and just check everything on a setup station and its good to go
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ianlloyd
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Post by ianlloyd on Dec 2, 2015 8:37:37 GMT
Mine is already for another test session. Very tempted this week by a new X Ray T4 though.....
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Post by mart59 on Dec 2, 2015 8:41:29 GMT
What size pinion do I need Dave
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Post by wessex88 on Dec 2, 2015 10:01:07 GMT
Mine is already for another test session. Very tempted this week by a new X Ray T4 though..... Be strong resist the dark side!
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ianlloyd
Lapping the Back Markers
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Post by ianlloyd on Dec 2, 2015 10:25:11 GMT
Mine is already for another test session. Very tempted this week by a new X Ray T4 though..... Be strong resist the dark side! NOOOOOOOOOooooooo dont want to.......
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Post by Dave Chamberlain on Dec 2, 2015 12:38:49 GMT
What size pinion do I need Dave I'll need to work it out Martin unless Ian can remember what he's running.. At a guess something around upper 20's would be a mile off..
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ianlloyd
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Post by ianlloyd on Dec 2, 2015 13:12:37 GMT
Dont forget I am running Saturn 20 which will have different gearing to the 17.5 brushless. I would guess around a 24 pinion if running standard spur and see what happens. Again is it being run indoors or out?
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Post by theslacker on Dec 2, 2015 14:03:16 GMT
Be strong resist the dark side! NOOOOOOOOOooooooo dont want to....... The other half ordered mine from MB at around 3:30pm on Monday, all delivered by 10am Tuesday! Now that's fast shipping! Unfortunately im not allowed it until Christmas though..
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Post by mart59 on Dec 3, 2015 19:03:31 GMT
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