drexler or quaife atb diffrential ???

[adi.r]

we are from india, participating in fsae for the first time. An importer in india offers quaife differential at a cheaper price compared to drexler. should we go for quaife ?

[Pat Clarke]

Adi,

You should introduce yourself and team.
But, regarding your question.
When the Design Judge asks "Why did you choose the XXX differential"? What will you tell him. Answering that the general opinion on an internet forum seemed to favour the XXX diff will gain neither respect or points.

Both the Drexler and Quaife diffs are very good units but are very different in their design and operation, so strictly speaking, they are not interchangeable.

You need to research all aspects of both diffs, including the cost. and make a reasoned decision on choice. This doesn't come from a forum, where the members have no knowledge of your car design, drivers abilities or your vehicle dynamics knowledge. Then, when you have made that choice, you can defend it before the judges,

Pat

Edit,

I see Jonny has just posted suggesting a spool.
That is indeed another viable option, but again, one you will have to justify to the judges.
There is information out there on how to make a car work with a spool, something you should make yourself familiar with before building one.

Pat

[Jonny Rochester]

I would advise to use no diff at all. We have just used a solid aluminium cylinder called a "spool", which equates to a locked diff, and much cheaper! If you choose, you could design your spool to the same dimensions as a differential so it could be swapped in later if you have the money.

quaife have a large catalog of diffs and gearboxes. Is the one you want to buy a torsen or clutch plate?

[MCoach]

Jonny,

We've used the Honda cam and pawl type differentials for a while and one of the methods I used for "spool" testing without having to get too custom is take a worn out set of gears and weld the assembly together and drop it back in. It allows us a quick swap way of justifying which direction to go in terms of car design and system complexity. In the case of many other systems like the viscous coupling, clutch packs, ATB and others the same strategy can be used. Its easy to decrease system complexity quickly and look at the effect of other factors.

However, in terms of weight I have to give you the cake becuase an actual spool will always be lighter than a makeshift spool.

If you ever consider changing diff types, that can be an easy avenue to go down.

[scotty young Taylor Race]

Adi,

I am Scotty from Taylor Race Engineering . Please contact me if you need help or have questions on differential choices and drive line components . I will be more than happy help and share the data we have acquired over the last 15 years with FSAE teams . The major factor for you and your team will be what you have budgeted for the drive line.

Scotty

here is our face book page .
https://www.facebook.com/pages/FSAE-Taylor-race-Engineering/139126679471784?ref=bookmarks