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frecklychimp
Average Member
852 Posts |
 Posted - 22 April 2012 : 22:01:40
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Welcome to 'Chimp my Ride'!
Just got back from Round 1 of SCT Nationals 2012 at Coventry, picked up my new mod from Lewis and was dying to try it all day but unfortunately there was not enough time between rounds to sneeze let alone do anything to truck due to ???
So... keen to get it done and tested i've spent 1/2 hour on the truck...
Posting this up here as the forum is a little dead on you guys showing of your tinkering skills, so hopefully it will encourage some more of you showing off what you've done to your R/C racers...
This is a before pic for those unfamiliar with a Losi/TLR XXX-SCT:
This is after 5 minutes tinkering and showing how easy the old school modular chassis design is to take apart:
This is the modification thats to be fitted... spot the difference?
And here it is fitted and ready to race:
Now you are probably wondering... why fit a skinny chassis to an SCT? whats the point?
Well... firstly, because i can, so why not try it! The chassis is from the Losi XXX-SCB, so as pics show was a straight forward bolt in job and refit electrics.
Secondly... Anyone that has tried to jump an SCT must have noticed the 'parachuting' effect when they are airbourne, particularly when racing outside but it also noticed it happened indoors at Arena X venue on some of the bigger jumps. It's obviously air getting trapped under the body and causing it to 'kite' so it hovers, slows down forward momentum (sometimes pushes you backwards!) and you tend to land heavily from it as there is no real control over car as it happens.
So... the theory is that using a thinner chassis will help combat air being trapped under body so much as 'tub' type chassis pocket the air, there is less surface area so air can escape easier when all 4 wheels are on the ground, hopefully helping the truck speed and acceleration, its also a lot stiffer so should help improve handling too.
This is the view from underneath, shows the idea quite well:
The only downside is that you lose side impact protection... which never really happens (if you race properly!) and T-Boning is a big no no anyways!
So.. this is another perfect reason why you should all get rid of those pants common trucks and get a Losi XXX-SCT, I'm not saying this due to brand loyalty.... i've raced all 2WD SCT's on the market and the XXX-SCT wins hands down on all aspects of SCT racing... and it hasn't got a gay white/grey chassis!
Go see Lewis at A1 Hobbies and lets see some more proper trucks being raced at the club  |
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Blitz34
New Member
United Kingdom
88 Posts |
Posted - 22 April 2012 : 22:12:47
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| Looks nice m8 but was you thinking of these comments when the A final winner lapped you with his gay white/grey chassis? |
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frecklychimp
Average Member
852 Posts |
Posted - 22 April 2012 : 22:44:51
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Ahhh... here come the excuses...
he also lapped everyone else in the A final too 
Brooky is a bloody good driver, far, far better than me, plus his choice in tyres worked slightly better than everyone elses in the very wet.. hence the lapping!
I had a pretty crap days racing and openly admit it, was no right tyres for today... went from too much grip, to not enough, to wheelnut coming undone half a lap in (my fault!) and rd 4 it rained so everyone was spinning out... had written the meeting off after the 2nd round of qualifying tbh...
but... was still 8th overall in the end!, our qualifying round kept getting the blunt end of the poor weather too, in rd 4 we got the rain, then we were the only 2WD final that had to race after the hale/monsoon!
Didn't notice any of the far more experienced A1 Racing Club 2WD SCT racers in the A Final either... Did notice that 5 of us Broxtowe members were up there though 
Anyway, the Losi is still better, so there... and it hasn't got a gay white/grey chassis and i'll happily challenge any of the club Blitz owners to try and keep up with it! |
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Tnx king
Junior Member
United Kingdom
331 Posts |
Posted - 22 April 2012 : 22:54:59
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| Change clubs when it suits mark !!! you whore!!!! Sounds as if you all had a wonderful days racing well done a1racingclub/ or broxtowe if they are winning :-) ay mark |
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frecklychimp
Average Member
852 Posts |
Posted - 22 April 2012 : 23:18:30
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Spammer! This is supposed to be about my skinny chassis modification, not jealousy cos i race at a proper club!
i haven't changed clubs... i'm a member at Broxtowe... just a slave to the members at A1!
Get your TLR XXX-SCT running again 'Number 2' and get out there racing with your 'team' mate... you've got a skinny chassis too so don't be jealous!
In fact... box the truck and all the bits up and i'll build it up so there are no excuses, you'd have been in the A today i reckon, easily with a Losi TLR spec XXX-SCT, available from A1 Hobbies LTD at a very competitive price with great spares back-up and a great team of drivers to give you all the advice needed to thrash Blitz's!
(not that you'll ever need spares cos they are very strong and only suffer light damage from bouncing off event tent roofs cos they are so fast and light they can actually reach the roof and still hit the floor and wipe the floor with the other SCT's with a slightly very cracked rear shock tower... plus then get in the A final at a SCT National whilst racing in floods with the same cracked rear shock tower and a crap driver so there!) |
Edited by - frecklychimp on 22 April 2012 23:20:31 |
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frecklychimp
Average Member
852 Posts |
Posted - 22 April 2012 : 23:20:40
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| (can you tell oOple is down?! aaaarghh!) |
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hpi_guy
Junior Member
United Kingdom
401 Posts |
Posted - 23 April 2012 : 07:33:29
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| In fairness brooky could beat all of us even with a old school Tamiya, but I still think that the blitz is as good if not even a bit better than the losi, the blitz was the car of choice for smithy and brooky, the most popular car at the meetings is a blitz, there is only a handful of losi's, the chassis if anything will cause more of the marachute effect as the chassis pushed some of the air sideways but now it is mushing more air into the body so without extra holes it will parachute more, also it is now a similar shape to a losi strike with a thin chassis and they were terrible from what I heard because none of the weight was spread out, just my opinion |
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frecklychimp
Average Member
852 Posts |
Posted - 23 April 2012 : 13:07:17
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Brooky is only human, so anything he can do anyone else can do and he's not that far out of reach with some more practice, Rob nailed him with the Ansmann but had elecrtic issues all day so couldn't bring it home for the win.
The Blitz is based on the Losi XXX design from 14ish years ago, which was a revolutionary design in 1/10th offroad at the time and has been copied ever since, Losi also invented the dual slipper system which is also used in every electric design since and the Hydradrive system which was banned from racing at the time because it was too good too.
The Blitz is a cheap toy, has poor diffs, poor shocks, poor driveshafts, weak steering components and very flexible components with rubbish tuning parts available from the manufacturer, it is common because it is cheap and was released before the Losi, people buy them because everyone else uses them, which doesn't make them better, just there are more in use... the clever choice is the Losi, which has been proved by me getting one and beating you all with it!
There wouldn't be A1 Racing Club today without the Losi Strike, they saved the club and launched it into what it is today, no question on that... what you have heard is crap, the Strike was a cheap rtr car based on a monster truck, they have a high roll centre because of this which is why they are out manouvered by the newer SCT designs... they were still a good car but let down by cheap materials used to make a cheap car... i'll run one at the next SCT National if Lewis still has his, then you can see how crap they are when you get your ass kicked by one!
you need to read a few books on Race Car design and understand the concepts, particularly Centre Of Gravity and Roll Centre... Toe settings, Camber Settings, Squat, Dive, Castor, Kingpin inclination, Corner weighting and then aerodynamics will help you too!
spreading weight out over a chassis is a load of crap, causes slow response, unstable handling and lots of roll, weight should all be in a centre line between front and rear wheels central across axles and as low as possible within roll centre design of suspension, C of G should be balanced effectively to give maximum force to all tyres and ideally weight placed to cause as little roll as possible... a chassis should be as stiff as possible and as light as possible and the suspension design should be doing the work and helping to generate grip with its geometry settings.
As for the aero comments... the thinner chassis will help disperse air turbulance from the wheels when on the ground, means less air can be trapped between chassis and body, will allow air to escape from under the body quicker when jumping, gives less underbody airflow resistance, is more streamlined by design... so how can it be worse?
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hpi_guy
Junior Member
United Kingdom
401 Posts |
Posted - 23 April 2012 : 13:40:56
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| How can you say that it is not a crap car and then in the same sentence say that it is made of cheap material and has a high centre of gravity? Surely these are that makings for a bad car? It may have saved the club but it doesn't make it a fantastic car, if making the chassis thinner is better then why aren't manufacturers with the slight exception of a Durango 410 making their chassis thinner? You may beat us with your losi but the quality of the driver is the main factor, I could go out and buy a brand new Durango 410, it won't make me a better driver, te blitz doesn't need any upgrades anyway, the ese has stiff parts, decent shocks and a aluminium steering rack, anything else is just adding shiny unnecessary parts |
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frecklychimp
Average Member
852 Posts |
Posted - 23 April 2012 : 15:03:31
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The exception of making the chassis narrower for competition r/c cars being being Durango, TLR, Associated, Schumacher, Vega, Tamiya etc etc... all of them are now doing it because materials are available within reasonable price ranges to be able to get strength and durability without having to compromise on design and can engineer more sensible designs rather than making a huge plastic tub.
facts are facts Will, go read some motorsport engineering books rather than the crap you read on internet forums and you may start to understand basic mechanical engineering principals that are applied to all forms of competition vehicle, both full size and r/c toys....
why is an F1 car not shaped like a Hummer in your principals?
The Losi Strike was fine as a basher, it didn't stand up to racing well because of the poor metal gears in the Diff and poor parts supply so everyone wrote it off, the rest of the car was fine... it had a higher roll centre than other designs but was also mid motored... i could still hustle one on the track and will happily doit to prove they are not a bad car.
ESE shocks are crap, have seen far too many chassis broken, the diffs fall apart and the driveshafts last 2 minutes... how much have you spent on replacement parts for yours? you don't have to buy hop up parts but you spend a fortune on replacing broken bits and worn out parts... kind of defeats the object when the XXX-SCT is bullet proof out of the box and cheaper to start with!
The XXX-SCT is a far superior truck to the Blitz end of, Thats from experience of trying all the others and not from what some other ediot wrote on the internet when they were bored.... i'm not discussing quality of driving, merely the quality of equipment in comparison on the bench and what you get for your money.
Being good at racing is all about a driver being in harmony with their equipment and putting in the best possible performance... winning is about doing that and it working to be faster than everyone else on the day... a good driver can get results with most cars by using skills to overcome the flaws of the design. |
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hpi_guy
Junior Member
United Kingdom
401 Posts |
Posted - 23 April 2012 : 15:48:20
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| I have broken a rear hub, bumper, toe in block, body mount an a few front hubs but they were all due to driving like a nob but yesterday I drove properly and broke nothing |
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robbiejuk
New Member
United Kingdom
53 Posts |
Posted - 06 June 2012 : 20:42:14
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| Anorexic chassis? Surely the cause of parachute effect is the big lightweight bodyshell. Good weight saving exercise though. :-) |
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ianholt
Average Member
United Kingdom
750 Posts |
Posted - 06 June 2012 : 21:26:29
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| Wont this just allow even more air in to the body cavity and add to the parachute problem? Would it not be best to have a minimal gap between the chassis and the body to prevent air getting in? |
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robbiejuk
New Member
United Kingdom
53 Posts |
Posted - 06 June 2012 : 21:45:39
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| Yeah I thought that but I reckon if you sealed the bottom off to the sides of the body it would be like a 99 Mercedes at lemans. I reckon that mark just really wants an scb, he is just to ashamed race one. :-p |
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