kingtito

iTrader: (2)

Thanks

terry.sc

You might have problems fitting it as it's made for the F103/F104 pod which is narrower than the TRF101 pod and the side tunnel might end up where you need to fix it to the left side mount and the spur gear protector might not line up with the gear. It could be made to fit, but you might end up cutting an extra hole or two in it for clearance.

You might be better trying an ABC Hobby or Zen Racing diffuser, they don't have the side tunnels.

BTW RCMart have the TRG diffuser in stock.

terry.sc

It increases downforce and stabilises the rear end of the car. In this article from RC World magazine, they tested several diffusers on an F103, and compared it to the standard setup. Usually they gave around 15% rear downforce for about 4% more drag, and on the track there is a noticeable difference. They work even better if you don't cut out the hole under the motor, but obviously that reduces the amount of motor cooling.

The secondary reason for using one is that it protects the rear of the car and particularly the spur gear from damage. With the diffuser if someone hits the rear of your car they can end up damaging the diffuser but they won't get into the spur gear teeth.

simmo0916

The wait for my TRF101 to pass through customs is killing me

I just want to be building it already!

macavant

iTrader: (65)

Here are side by side pictures of my F1R with the TRG diffuser and my TRF101. The mounting points on the diffuser are pre-marked with dimples - but you can create new ones to fit the pod. (along with the cutout area for the motor)
The spur gear should clear w/o issues.

merkyworks

I'm surprised this would work as well as it does because the cutout for the motor should destroy any effect the diffuser creates.

JayL

It works really well, when I ran it on F103 foam I was able to run much harder rear tires, 35 shore vs 40 and still have the same rear grip with very little tire wear. On the F103 15th stock tires it almost made the car push it you can imagine that on a F103 Foam

aloksatoor

iTrader: (42)

A thin sheet of plastic stcikers or saran wrap on t the cutout should work better then

simmo0916

Maybe Im the only one... But I'm getting a bit confused by the TRF instruction manual. Does anyone know a good step by step online?

theatriks

iTrader: (8)

Are you just stuck on one step ? ...I think petit rc has a build that a member on this forum had done .

terry.sc

You don't have to cut out the hole in the diffuser.

There are two ways of looking at it. Leaving the diffuser solid means you have a smoother airflow to the diffuser and faster moving air under the pod to reduce pressure and generate downforce. Cutting the hole out means you have the airflow wrapping around the bottom of the motor, pulling air up through the hole which reduces the air entering the diffuser, so reducing pressure again to generate downforce. The air coming up through the hole ends up going over the top surface of the diffuser, also helping downforce.

Personally I always cut out the hole, it helps airflow around the motor and running indoors on tight tracks means motor cooling is very much a priority.

Autocratic

iTrader: (26)

How much does the diffuser raise the motor pod?

simmo0916

Its the servo installation - I will be having a look at it with fresh eyes later

Jorge T

iTrader: (14)

.030 inch, ~.8mm

simmo0916

Hi guys - Time for some daft questions before I start my build.

With chassis prep - CA... Is that just normal superglue?
What about clear nail varnish, would that do the job?