Drive shaft angle????

[telboy]

If its the same as the Mi3 (which I'm sure it is) then the belt tension remains similar and it is just the height of the diff which is altered. We used to mess around with this in the TC to help set ups.


Anyway, don't let mark win, get argueing with him!!!!

[Alfonzo]

Pretty sure any sweep forward or backwards will increase the lateral loading on the outboard bearings, but I don't think it will have any effect upon suspension I'd imagine that any extra rotating mass gain through mud on tyres, etc will amplify the effect.

[MRD]

Is it not the case that rasing/lowering the diff effects the CG and thats what people are feeling, not the drive angle? .

[Lee]

Originally Posted by MRD

Is it not the case that rasing/lowering the diff effects the CG and thats what people are feeling, not the drive angle? .

I dont think that statement is true, because you could alter the height of the hub and give the same effect, CL explaination seems to make sense and i trust chris, and CD backed it up. Its good enough for me

[Chrislong]

Originally Posted by MRD

Is it not the case that rasing/lowering the diff effects the CG and thats what people are feeling, not the drive angle? .

No.

if the effect was as simple as the weight of it effecting C of G, we'd be putting lead high up on the tower rather than going through all the effort raising the gearbox.

[Richard Lowe]

Originally Posted by Chrislong

With CVD's this effect is less, so when driving through a corner and the driveshafts are like this \ \ the wheels can still spinup without the straightening force as much as Losi dogbones will....

I think you have that backwards Schlong, CVD's are the ones that want to straighten themselves under load

[Chris Doughty]

when looking at the top of the car, if the driveshafts sweep forwards as they go outwards the car will want to rise when on power.

if they sweep backwards the car will want to lower its self when on power.

[Chrislong]

Originally Posted by Richard Lowe

I think you have that backwards Schlong, CVD's are the ones that want to straighten themselves under load

Hiya Rich!

Now you say it, I have a feeling you are right. Can anybody else confirm either way?

[Chrislong]

Originally Posted by DoughtyUK.net

when looking at the top of the car, if the driveshafts sweep forwards as they go outwards the car will want to rise when on power.

if they sweep backwards the car will want to lower its self when on power.

Got it, with some funky hand movement and chin scratching - I think I can remember it too...

CD, can you confirm the thing above, is it the Dogbone or CVD's which straighten up more on drive?

[Paul_Sinclair]

I'm pretty sure RL is right... CVD's are "stiffer" or want to straighten out more than Losi-style universals.

[Chris Doughty]

I seem to remember CVD's make the car square up much quicker (stiffer) than dogbones.

I love not having to worry about any of this stuff anymore.

[ashleyb4]

i think its all part of the fun chris worrying about the little things.

It is facanating reading this thread ive always ondered what the diffrence between cvd's and dogbones are

A

[Lee]

Originally Posted by DoughtyUK.net

when looking at the top of the car, if the driveshafts sweep forwards as they go outwards the car will want to rise when on power.

if they sweep backwards the car will want to lower its self when on power.

This is interesting, i can see it now too, because im imagining CL`s hand movements

So shortening the wheelbase of the car is not just about getting more weight behind the wishbones, there is more to it. Nice to know this stuff

[Northy]

Schlong, I'm sure Elvo told me that Gill Losi Jr set out to have zero dogbone plunge on the BK2....

G

[Chris Doughty]

there are so many 'simple' changes that we make that also change other things about the car that we don't or may not understand or realise, like you say, wheelbase does not just change the wheelbase, but also the driveshaft angle.

[Chrislong]

Originally Posted by Northy

Schlong, I'm sure Elvo told me that Gill Losi Jr set out to have zero dogbone plunge on the BK2....

G

Then im pretty sure Elvo is wrong. It has a bucket full of plunge with those stumpy driveshafts. I know that as I drove one for quite a while - do you still have your BK2? I don't have mine otherwise id be double checking.

[Chris Doughty]

I seem to remember there being a lot of plunge.

they might as well have stuck a solid rear axle on the car the rear was that tight on power

[Northy]

Maybe I remember it the wrong way round.

I'm sure he'll pop by and let us know.

I don't have mine any more - converted it to a Hybrid - then a CR - then sold it. Stu and Damo still run them and like them!

I have a few bits left at home....

G

[Alfonzo]

Originally Posted by DoughtyUK.net

when looking at the top of the car, if the driveshafts sweep forwards as they go outwards the car will want to rise when on power.

if they sweep backwards the car will want to lower its self when on power.

I can't get this Can you explain more?

[Lee]

The way i have it in my mind is:

Shafts angled / \ (backwards) means as they rotate they try and lift the rear end as they are pulling the wheels (sort of)

When angled \ / (forwards) in my mind they make the car squat more on power and drives the rear end into the ground


Someone correct me if im wrong