Spool on 4WD Buggy
 

Hi

has anyone tried a spool on front?
Does it affect jump-ability on high-grip indoor tracks?

Greetings from switzerland

Maurice

Please explain more as spool doesnt make any sense to me.

its not a psool in theoval racing - indianapolis type tyingy i assume the reference is to a locked front diff like you run in a touring car
:thumbsup:

anyway i'd imagine it to be poo unless you are running on super high grip

Spool = fully locked Front Dif
 

Hello,
its a fully locked front diff.
Just tried it on slippery ground, doesen't feels bad...
But i dont know how it feels, when you jump.

Greez
Maurice

under acceleration on a slippy floor I'm guessing it should handle like a front one way but I bet it understeers like a bitch into corners. If its anything like the spool on my TC it'll eat tyres. Its good that people are trying different things tho. Keep us posted on your findings :)

I had one in a Losi xxx4g+ ages ago and i hated it!

I cant see any reason not to run a spool on an offroad car.

I am interested as back in the day there was no diffs it was spool on the back
2wd.

They certainly do work on road i wonder if they would be strong enough for offroad use though!!!

I can think of several reasons not to run a spool in an offroad car.

It will be terrible on bumps.

It will put a lot of strain in the drivetrain and more than likely lead to heavy wear / breakages. - (In this respect a very tight diff is a better option, which will drive similar but be less prone to breaking.)


If used on the front of a 4wd it will understeer into corners


On the rear of a 2wd will mean the car will understeer up to a point then swap ends. - Ever seen a mardve with a mod motor in it?


Back in the day 2wd cars had all sorts of crazy features.
They also had absolutely no power so pretty much anything would work!

I still want to try a one way in the rear, it would still let the car turn and you would still have front brakes. It wouldn't be amazing or everybody would use them but it would be interesting to try.

I've not tried a spool but have used a locked one-way. IE both the front wheels are linked together but they can free wheel when not under power. OK for open circuits. :thumbsup:

spool on slippery floor
 

Drove the spool yesterday for 3 packs on a slippery floor, entering the corners it has a bit more understeer, exiting it pulls the car out of the corner very fast.
If you can use the weight transfer to the front wheels during breaking, you can fight the understeer very good. If you break to hard, its goes strait on...
I think the advantage is that you can stay longer on throttle, and can exit the corner in a tighter way...

what do you guys think about?

grezz

Maurice

Well it will accelerate just as well as a one way, it wont rotate on tight corners and it will understeer going into corners, the only advantage is the car will brake a lot better. I don't think it will be even close to a one way/diffed car in a race.

I think Southwell is spot on .... it sounds like you would get on with my most hated buggy component, the one-way diff. I hate them, many people love them .... it's all down to how you drive but it has to be better than a spool IMHO.

Spool
 

Hi forgot to say, in my last post, i compared spool / one way in my description.
Rotation of the car in slow corners dont semme worser, because you can lift the brake a little bit, the wheels have to roll, an with the aditional dynamic weight transfer to the front, it turns not worser than with one-way.
But i still couldn't find out how it jumps...

Greez

Maurice

I have always wondered this

1, in a wheeler most people pretty much run a locked diff up front.
2, Would be easier to maintain then double diffs (not that its hard, but still)

I might have to try it out some day! I tend to get bored on practice days and try everything

Really?

That must be a states thing as I don't think I know a single person that's ever deliberatly run a locked front diff in their 4wd over here.

Yeah thats what most guys do. Its not locked, has just a little bit of give:thumbsup: