Front 40teeth on a 4WD leo

Mike1970

Well-Known Member
Messages
2,282
Location
Manchester UK
Hi All,

Is there anyone who has tried to run with the front 40teeth wheel on a 4WD leo ..??
Hey Konrad, I've not finished my car yet but how is yours going? No idea on the gearing yet, I just want to build it up and get everything running smooth before this weekend.
 

KBracing

Active Member
Messages
34
Location
Kolding - DK
Hi Mike

I haven't tried my car yet, since the the weather is bad and, our track is under water...:(

But what I'm told, it runs more easily, than one which has runed some races :confused:
 

Mike1970

Well-Known Member
Messages
2,282
Location
Manchester UK
Hi Mike

I haven't tried my car yet, since the the weather is bad and, our track is under water...:(

But what I'm told, it runs more easily, than one which has runed some races :confused:
If you read the description about the 40t gear in the FG book it will tell you that the 40t gear gives you more propultion - I assume this means torque rather than top end.
 

KBracing

Active Member
Messages
34
Location
Kolding - DK
From what I've read, is 40teeth wheel ONLY for the front end, to make a kind of over-drive.
 
Last edited:

renbar

Well-Known Member
Messages
3,523
Location
kirby cross essex
don't get it guys as its a belt drive set up with no center diff how can the front diff be geared different to the rear diff don't all 4 wheels travel at the same speed,,doing this will make the fronts spin up quicker than the rears but the rears will be pushing harder than the fronts,,,,call me thick but i just don't get it
 

KBracing

Active Member
Messages
34
Location
Kolding - DK
:confused: In theory, will over-drive make the front tires turn faster. This should give the car less offpower steering and will give you more steering exiting the turn, but do it......????
It is something that Team Losi tried, in their XXX 4WD, but I've never tried one ....
 

renbar

Well-Known Member
Messages
3,523
Location
kirby cross essex
agreed but 4wd aint my thing the one way thing i understand,,the changing the front gear size i just cant get me head around all 4 wheels when cars moving are going the same speed yes,,so changing the front gear the fronts will be going slower than the rears
 

renbar

Well-Known Member
Messages
3,523
Location
kirby cross essex
but in that same theory the rears will be pushing the fronts on power faster than the gear wants them to go??????????? im lost mate and sticking with 2wd half the problems
 

renbar

Well-Known Member
Messages
3,523
Location
kirby cross essex
Have read on a German LS-Forum, that the y1252 One-way clutch not it is so durable. :crying:
mate i have trouble reading english lol let alone trying to read german,,the one way diff was just a idea something i found when looking through there site looked good but not having a 4wd to try it on i cant comment on how good it is or if it works but the idea i liked
 

allanach

Well-Known Member
Messages
388
Location
Brisbane
Why spend so much if all you want to do is move the drive bias to the front wheels - the gears cost pennies compaired to that.
Mike, i think they run the one way so you can adjust your brake bias between the front and rear.

Some tracks call for rear brake only and some require brakes on all 4 corners.

The only thing you couldn't do is brake on the front wheels only..... but why would you want to?

Correct me if I'm wrong but I'm sure that's why they do it.
 

scooter5200

Well-Known Member
Messages
109
don't forget to factor in tire size . To have a true the overdrive effect front tires should be smaller than the rear.
 

Mike1970

Well-Known Member
Messages
2,282
Location
Manchester UK
Having run the car I can say that the car goes very well with the 42t geat provided. I am going to try the FG version of the one way diff

https://www.fg-onlineshop.de/ItemDetail.aspx?ig3=Tuning+parts&ig2=General+Tuning+parts&ig1=Standard&desc1=Front+axle+free+wheel+for+4WD,+set&ig3id=9&ig2id=21&ig1id=2&iid=6755&mi=0&hasv=0&webi=0&pr=0

I run the car on 20/44 because I use my 2wd wheels & tyres instead of the larger ones. I have hydraulic brakes on the front and on the layshaft - it stops on a penny and goes like sh1t off a stick.
 
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