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Retro F1 And CR-102


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#1 Eddie Fleming

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Posted 24 November 2023 - 02:05 PM

Everything is so close to the motor I have noticed that the strong magnets in the CR-102 can effect the pan movement in Retro F1 cars. I have multiple cars that do not move the same with the motor in and out. I have changed components on two cars from steel to brass and they work fine. I even made brass pins for the rear on one car. 

 

Has anyone else noticed this?

 

 


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#2 John Luongo

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Posted 24 November 2023 - 02:37 PM

i agree with you, ed. those magnets are very strong. i have picked up numerous body pins with one inside the motor.



#3 Kim Lander

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Posted 24 November 2023 - 02:58 PM

You are correct Eddie...I have started using non-magnetic axles on flex chassis...it affects them also.


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#4 Danny Zona

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Posted 24 November 2023 - 03:01 PM

Everything is so close to the motor I have noticed that the strong magnets in the CR-102 can effect the pan movement in Retro F1 cars. I have multiple cars that do not move the same with the motor in and out. I have changed components on two cars from steel to brass and they work fine. I even made brass pins for the rear on one car. 
 
Has anyone else noticed this?
 
 

Yes.

I had that problem at the 2021 Fall Brawl Retro Nationals Race.
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#5 Pablo

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Posted 24 November 2023 - 03:23 PM

This isn't just with the CR102. It's the same with any and all of the latest FK style motors with ultra strong magnets.


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#6 Eddie Fleming

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Posted 24 November 2023 - 03:50 PM

This isn't just with the CR102. It's the same with any and all of the latest FK style motors with ultra strong magnets.

True enough Pablo.

 

I mentioned the CR-102 because it is the prevalent motor in retro racing.


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#7 Rob Voska

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Posted 24 November 2023 - 03:58 PM

Affects the bite bar in flexi chassis.


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#8 JerseyJohn

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Posted 24 November 2023 - 05:38 PM

I use a 102 dummy motor with the mags removed when i build chassis. With the mags in, the motor keeps pulling up the rails from the block. JJ


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#9 Bill Breck

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Posted 24 November 2023 - 05:57 PM

You are correct Eddie...I have started using non-magnetic axles on flex chassis...it affects them also.

 

Every one of my axles has become magnetized and I've definitely noticed that the axles spin much more freely when the motor isn't in the chassis.

 

In the HO world they use titanium and tungsten axles. Where can I get non-magnetic axles for flexi's and retro?



#10 Dominator

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Posted 24 November 2023 - 06:29 PM

Use shorter pins near the motor. This will help a bit.
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#11 Eddie Fleming

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Posted 24 November 2023 - 07:26 PM

I use a 102 dummy motor with the mags removed when i build chassis. With the mags in, the motor keeps pulling up the rails from the block. JJ

I agree with that John. Been building around no magnet motors for years. 

 

Use shorter pins near the motor. This will help a bit.

But you can only make them so short.  :)


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#12 Tim Neja

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Posted 27 November 2023 - 04:46 PM

Okay-- I hadn't thought of that.  But I'll bet it's why I prefer the Retro Eagle motors for my F-1 cars at our local races where we allow them!!  The 102 cars just don't handle as smoothly--I thought it was more due to the torque--but this makes sense RE: the pan movement!!  I'll have to put some brass pans in and see how that effects the current chassis!!  


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#13 JerseyJohn

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Posted 27 November 2023 - 08:05 PM

Stainless rails ? but not legal


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#14 Martin

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Posted 01 December 2023 - 12:26 PM

Bill, Tungsten is available at your local welding store etc. It is used for TIG welding. T being for Tungsten.

It is sold in 7'' long tenths and is 3/32" or 1/8". I use them in my chassis fixture full length.

 

It is not magnetic, but is heavy, not sure if the weight in that area  is a good or bad thing?  


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#15 Trent

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Posted 31 December 2023 - 12:00 AM

It was mentioned that TIG welding rods can be used for axles.  A quick look on Amazon shows that they come in several colors.  Is there one that is more desirable for our application.  Any difference in tinsel strength, etc?


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#16 Hot Slots

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Posted 31 December 2023 - 07:27 AM

I turn my axle around after it's magnetized and it almost pushes the car on its own.


Hahahaha
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#17 John Luongo

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Posted 31 December 2023 - 10:18 AM

thats a result of the "tesla effect" of magnetic field repulsion. it is a little known fact that the tesla effect is more pronounced when using a magnetized drive axel on an angle winder. of course polarities must be observed. best regards







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