CoolRunning
Rock Crawler
Here is a vid of some garden crawling of the TRX4 and RR10. 3 basic obstacles and 1 complex one.
I know some people may feel it's unfair that I'm crawling a 1.9 vs a 2.2 but I want to outline a few things first. It's not a comp and it's more like one mate with an Axial and another with the Traxxas doing some crawling. As you'll see, there is a definite difference to how the trucks go about their obstacles.
Traxxas is totally stock and running in low ratio with full locked diffs.
The Axial is a stock RTR Bomber with plastic links, glue on Baja TA tyres, foams that have seen far too many miles and have totally collapsed and the same Titan 550 21T as the TRX4 (though not reverse turn like the Traxxas). The Bomber has the optional Axial 2 speed (running also in low ratio) and runs 3S with a Hobbywing 1080 ESC and Savox waterproof servos.
Now, the Axial tyres are 1/2" larger OD than the Traxxas tyres which is an advantage but it's only half an inch and the Traxxas has a smaller pumpkin with greater ground clearance than the Axial. Plus, its axles are actually higher as well giving it a definite advantage at getting over objects (less high centring). Add in the tyre compound and foam advantage and the Traxxas looks in good shape. It would IMO be unfair comparing the TRX4 to a regular 1.9 SCX10.1 as the ground clearance would be markedly different and in the Traxxas' favour.
The RR10 claws back some advantage being 4cm wider and clearly has better approach/departure angles. I've taken that into account by taking the absolutely best possible lines with the TRX4 unlike the Bomber.
The 'drag race' was performed in low ratio first and then high ratio in both trucks.
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The 'rock pile' took a single go with the Bomber. The TRX4 took a number of goes so I showed the last which was the best. It also managed to run one direction perfectly.
I took my time and was as careful as possible with the TRX4 as you will see. I wanted to give it the best opportunity to shine.
The TRX4 could not make the first flat rock; I've had about 10 goes at it and it rolls every time no matter how I approach it. The Bomber did this rock twice to show the difference. The high COG nails the Traxxas on this rock.
Second set of small rocks again proves to be easy for the Bomber but whilst ok, still a bit of work for the TRX4.
With the last large rock I was able to carefully work it and had a great run. Bomber nailed this rock with ease.
'Drag race'. The Bomber is a bit faster in low as it's geared a little higher and maybe 2-3 km/h faster overall. It's not much but the Traxxas understeers like a pig unfortunately so whilst it doesn't roll, it's less tail happy and doesn't drift with the heavy body on it. It's not as fun going fast but doesn't end up on its roof like the Bomber (foams are a major part of this though).
I really like the TRX4; it's a really great unit IMO and I'm excited to add a winch and maybe another body (though it looks so good, I'll struggle changing it just to make it crawl better). It really doesn't need much to be a lot of fun. The Bomber is a truck I'd suggest anyone pickup. It's so reliable and is like a mad puppy; it just wants to tear around but it's clearly a fantastic crawler. Best all round truck I own (SCX10,1, TRX4, Rock Rey, Yeti).
<iframe width="640" height="360" src="https://www.youtube.com/embed/-Fa6jFcHX8Y?ecver=2" frameborder="0" allowfullscreen=""></iframe>
I know some people may feel it's unfair that I'm crawling a 1.9 vs a 2.2 but I want to outline a few things first. It's not a comp and it's more like one mate with an Axial and another with the Traxxas doing some crawling. As you'll see, there is a definite difference to how the trucks go about their obstacles.
Traxxas is totally stock and running in low ratio with full locked diffs.
The Axial is a stock RTR Bomber with plastic links, glue on Baja TA tyres, foams that have seen far too many miles and have totally collapsed and the same Titan 550 21T as the TRX4 (though not reverse turn like the Traxxas). The Bomber has the optional Axial 2 speed (running also in low ratio) and runs 3S with a Hobbywing 1080 ESC and Savox waterproof servos.
Now, the Axial tyres are 1/2" larger OD than the Traxxas tyres which is an advantage but it's only half an inch and the Traxxas has a smaller pumpkin with greater ground clearance than the Axial. Plus, its axles are actually higher as well giving it a definite advantage at getting over objects (less high centring). Add in the tyre compound and foam advantage and the Traxxas looks in good shape. It would IMO be unfair comparing the TRX4 to a regular 1.9 SCX10.1 as the ground clearance would be markedly different and in the Traxxas' favour.
The RR10 claws back some advantage being 4cm wider and clearly has better approach/departure angles. I've taken that into account by taking the absolutely best possible lines with the TRX4 unlike the Bomber.
The 'drag race' was performed in low ratio first and then high ratio in both trucks.
====
The 'rock pile' took a single go with the Bomber. The TRX4 took a number of goes so I showed the last which was the best. It also managed to run one direction perfectly.
I took my time and was as careful as possible with the TRX4 as you will see. I wanted to give it the best opportunity to shine.
The TRX4 could not make the first flat rock; I've had about 10 goes at it and it rolls every time no matter how I approach it. The Bomber did this rock twice to show the difference. The high COG nails the Traxxas on this rock.
Second set of small rocks again proves to be easy for the Bomber but whilst ok, still a bit of work for the TRX4.
With the last large rock I was able to carefully work it and had a great run. Bomber nailed this rock with ease.
'Drag race'. The Bomber is a bit faster in low as it's geared a little higher and maybe 2-3 km/h faster overall. It's not much but the Traxxas understeers like a pig unfortunately so whilst it doesn't roll, it's less tail happy and doesn't drift with the heavy body on it. It's not as fun going fast but doesn't end up on its roof like the Bomber (foams are a major part of this though).
I really like the TRX4; it's a really great unit IMO and I'm excited to add a winch and maybe another body (though it looks so good, I'll struggle changing it just to make it crawl better). It really doesn't need much to be a lot of fun. The Bomber is a truck I'd suggest anyone pickup. It's so reliable and is like a mad puppy; it just wants to tear around but it's clearly a fantastic crawler. Best all round truck I own (SCX10,1, TRX4, Rock Rey, Yeti).
<iframe width="640" height="360" src="https://www.youtube.com/embed/-Fa6jFcHX8Y?ecver=2" frameborder="0" allowfullscreen=""></iframe>