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Discussion Starter · #1 ·
Hi,
I have a silly query

I have two Slot it Porsche 962 cars.The one motor has an orange motor end housing and the other white.Does this indicate different motor specs ?
Pace wise they both seem equal.

Cheers
Bryan
 

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Matt Tucker
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Bryan
no query is silly.

White ones are early versions are specified to run at 25k but have lower 'torque'/grunt. The orange ones whihc are now standard are specified to run at 21.5k but with more grunt.

I find they both can be equally quick but require different driving styles or even gear ratios to make them equally quick.

Hope this helps
Matt
 

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Not silly at all Bryan

The white endbell motor was fitted to earlier model cars up till about . . . um maybe 4 years ago.
It was known as a V12/2 motor. It developed 25,000RPM, but a modest torque figure which I forget.

The later model cars have the V12/3 motor with orange end-bell which develops 21,500 RPM, but has much higher torque figure. It's overall power rating is a little higher than the earlier motors.

You could test these for straightline speed if you ever want to exactly equalise them, - even by starting them off a couple of metres apart and running a slow lap then calculating the difference in distance traveled - a bit crude, but a gauge to use.
Then adjust the crown gear on one for more or less teeth to offset RPM versus torque to balance up acceleration and top speed more closely.

One other tidbit - the current motors have a variable performance. Some develop 5% more or less power than the stated spec.
I have one out of the box which is developing 23,200rpm, and also seems to have very good torque . . .
 

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Shoot matt, you replied while I was still typing . . . but we must have gone to the same slotty-school of learning
 

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Gerald Lambourn
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I have a Racer Sideways Riley that doesnt have the standard orange endbell, it has a brown one but I can't find a spec for this motor, ideas please. GeraldL
 

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Gerald Lambourn
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I picked out a Racer Sideways car for my friend Duncan the other night, very disappointing performance, motor seemed to be unbalanced, put another orange endbell motor in, spare from a Ferrari F40 kit, much better. I still think NSR motors are more consistent.
 

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Discussion Starter · #7 ·
Hi guys,

Thanks for the info..but now you have put your foot in it!I have more questions.

a)I always buy cars in pairs, normally the same model but in different colours, so as to easily distuingish between the two when racing.Sometimes the one car seems faster than the other.The test I do is to run both cars on the same lane directly behind each other at a constant speed.(I know this is not healthy for the controller) The way I figure it is they should stay in close contact with each other if they are more or less the same.Is this a valid conclusion?

Scalextric cars with the 'long can' motor normally have a black pinion fitted that is held tight with a type of cup.Do they have the same amount of teeth as the white ones ?(Not that I a lazy to count but my arms are too short to see)

Cheeers
Bryan
 

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Matt Tucker
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Bryan
Scalextric have the following standard ratios:
inline - 9 pinion 27 crown = 3:1
sidewinder - 11 tooth pinion 36 crown = 3.27:1

Gerald
brown end-bell - you are putting it in the wrong hole young man. Not sure about brown but they did/do produce a teal coloured one that is rated at 19.5k
 

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Slot.It V12/1c "silver" (FC-130) 25,000 RPM/12v; tested 25,163-28,098 RPM/12v
135 gcm/12v, 8.4W/12v
Slot.It V12/2 "silver" (FC-130) 26,000 RPM/12v
135 gcm/12v, 8.8W/12v
Slot.It V12/2b "silver" (FC-130) 25,000 RPM/12v, tested 20,746-26,164 RPM/12v
122 gcm/12v, 7.6W/12v

Slot.It V12/3 "orange endbell" early versions (FC-130) 21,500 RPM/12v; tested 22,500-23,766 RPM/12v
170 gcm/12v, 9.1W/12v
Slot.It V12/3 "orange endbell" later version, square corner case (FC-130) 21,500 RPM/12v; tested 23,535 RPM/12v
170 gcm/12v; tested 167 gcm/12v, tested 9.8W/12v

The dark orange/brown endbell is the later version orange endbell, there was an error in the assembly plant apparently...
 
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