Old Atomic-Carbon proto's

[OldTimer]

As people want to see more pictures of the upgraded XX4 i do a few years ago, i thought it might be nice to post various photos from the different protos i have made over the years.

Hopefully it might inspire people to have a dabble themselves and mod there own cars or dream up something new.

OK 1st up is a Slim 2 which i made back in 2006, it seems this layout style is catching on again

[OldTimer]

And a alternative version of the Slim 2 to reduce torque steer.

Big problem with both cars was the slipper clutch had no adjustment, it was either locked up or slipping like crazy.

I did race the car at a 2wd mid west regional at Marston Palmer and it felt like a 4wd to drive, but it was very very hard to put the power down without lighting up the rear tires, due to the slipper.

[OldTimer]

Ok next up is my idea of a upgraded Losi XX4 the 4X from 2008

Photo 1 - this was the 1st proto using a flat CF chassis to make sure everything fits before the mould is made for the tub chassis.

Photo 2 - This is comparing the car against a 501

Photo 3 - The tubbed version of the car, i am pretty sure Simon Reeves and Brian Preddy ran the car, problem i had was it really needed some aluminium parts like the motor plate instead of plastic which flex a lot. And with a XX4 rear end and a Cat SX front end, it would be to expensive to produce a kit as you need two donor cars. But with 3mm pitch and wider belts it was better suited for brushless and lipos.

[dibble34]

Looks really good. Could you of used the xx4 front end as well? Thanks for the pics, loved my xx4

[James]

Great thread, keep it up

[OldTimer]

Originally Posted by dibble34

Looks really good. Could you of used the xx4 front end as well? Thanks for the pics, loved my xx4

XX4 front end was well know to be very weak hence using the Cat front end which was more upto the job and dimensional was very very similar to the XX4

[GRIFF55]

It was super fast round Coventry right out of the car
Where are the pics of the best proto ever ;-))

[tyreman]

Originally Posted by OldTimer

Ok next up is my idea of a upgraded Losi XX4 the 4X from 2008

Photo 1 - this was the 1st proto using a flat CF chassis to make sure everything fits before the mould is made for the tub chassis.

Photo 2 - This is comparing the car against a 501

Photo 3 - The tubbed version of the car, i am pretty sure Simon Reeves and Brian Preddy ran the car, problem i had was it really needed some aluminium parts like the motor plate instead of plastic which flex a lot. And with a XX4 rear end and a Cat SX front end, it would be to expensive to produce a kit as you need two donor cars. But with 3mm pitch and wider belts it was better suited for brushless and lipos.

When I ran the car at Eden Park it was really good, but like Jonathan said it needed 2 parts made out of alloy, as when the motor got hot the heat transfer caused the motor mount to twist and flex, as it was made from delrin.

[Jaune]

I want a 4X!!!

[Bomberpilot]

Hi Jonathan

still got that 501 GTO with the engine more at front...it performed really well with the old heavy mh-batteries...

Greetings from switzerland
Maurice

[isobarik]

Originally Posted by OldTimer

Ok next up is my idea of a upgraded Losi XX4 the 4X from 2008

Photo 1 - this was the 1st proto using a flat CF chassis to make sure everything fits before the mould is made for the tub chassis.

Photo 2 - This is comparing the car against a 501

Photo 3 - The tubbed version of the car, i am pretty sure Simon Reeves and Brian Preddy ran the car, problem i had was it really needed some aluminium parts like the motor plate instead of plastic which flex a lot. And with a XX4 rear end and a Cat SX front end, it would be to expensive to produce a kit as you need two donor cars. But with 3mm pitch and wider belts it was better suited for brushless and lipos.

That carbon tubed updated xx4 should be awsome with orange colored gearboxes ....damn ...

when can i buy one ???

mvh isobarik

[Tom3012]

moved

[Darnoc]

This is STILL my best car bar far!!

[Naushad]

How did you get the weight forward with that setup?

Originally Posted by OldTimer

And a alternative version of the Slim 2 to reduce torque steer.

Big problem with both cars was the slipper clutch had no adjustment, it was either locked up or slipping like crazy.

I did race the car at a 2wd mid west regional at Marston Palmer and it felt like a 4wd to drive, but it was very very hard to put the power down without lighting up the rear tires, due to the slipper.

[OldTimer]

Originally Posted by Naushad

How did you get the weight forward with that setup?

Was trying to get the weight back over the rear end rather than forward.

[Tom3012]

Hi Jonathan,

Do you think that company could get hold of some belts which would be stronger for the xx4? Noticed the one in your X4 arent green losi ones thats why i ask

Cheers, Tom

[OldTimer]

Originally Posted by Tom3012

Hi Jonathan,

Do you think that company could get hold of some belts which would be stronger for the xx4? Noticed the one in your X4 arent green losi ones thats why i ask

Cheers, Tom

The problem with the xx4 belts is they are a strange pitch which is hard to find, i will try and dig out what it is, i think they are a american standard.

On the 4X i converted everything to 3mm HTD pitch belts, a lot of cars use this like touring cars and most off road cars which are metric ie Yok, Schumacher, Xray, Serpent etc, the belts are a lot easier to get hold of.

[Battle_axe]

Originally Posted by Tom3012

Hi Jonathan,

Do you think that company could get hold of some belts which would be stronger for the xx4? Noticed the one in your X4 arent green losi ones thats why i ask

Cheers, Tom

i am running belts from there at the moment in the standard losi pitch but they wont last now when the avrg 6.5 is getting lose to 700W of power and the belts really are designed for your photocopier!!