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Weakest link of a Banjo? Hotting them up?
#51
Posted 28 July 2010 - 01:46 PM
I would be interested in seeing turbotrana's bracing on the caps, is this some kind of 'cap girdle'? The description didn't really make it obvious to me.
Putting bracing on the back of the diff isn't very difficult - just gotta make sure it's aligned how you want it before hand, and gotta check that it hasn't gone out after you do the work. I don't know how sensitive they are, but potentially quite sensitive! If it's going to be out-of-alignment in any way, a bit of toe-in and a bit of negative camber is what you want, so you can just get an oxy onto the upper front side of the axle tubes and shrink it an appropriate amount, but obviously you'd want to measure before & after so you know what is actually going on.
He said no shorter than 3.36, he means no TALLER than 3.36. They go really short because they go in commercial vehicles, four cylinder cars etc. For a street or race car, going really short obviously has huge advantages but disadvantages that come with it. That's not rocket science, my comment was only correcting his wording stuff-up, and saying that 3.36 really isn't THAT short either, if you have an overdrive or decent size wheels that is generally fine for a street car that sees highways a bit, but that is a topic for another discussion anyway
#52
Posted 28 July 2010 - 03:51 PM
#53
_HQ SS_
Posted 28 July 2010 - 04:09 PM
http://gallery.oldho...g00006.jpg.html
was the reinforcement that had bee added to a HR banjo housing in a bash car that we worked on for a while.
This was very well used by the owner while he owned it and never suffered a diff or axle failure in that time but did blow a celica box or two up.
There are more pictures of the rest of the car in the same place as that picture too.
Cheers Paul.
#54
Posted 28 July 2010 - 06:51 PM
If you kept power down to about 100hp then that would not be a problem.
You'd be able to keep the 4 speed and the Banjo, and Nana's venetians on the rear window wouldn't rattle either!
That HR reinforcing looks good, would have to be worthwhile. Most diffs will bend a bit and need straightening after some miles, but the Banjo design is worst of the lot both in respect of being susceptible to bending and the fact that being bent causes major problems.
Edited by 76lxhatch, 28 July 2010 - 06:47 PM.
#55
Posted 30 July 2010 - 11:26 AM
I remember asking a question about it and getting an answer too, just dont know where it is!
#56
_torana1979_
Posted 31 August 2010 - 05:00 PM
I am curious on something with the banjo diffs.
I have blown up heaps of banjo's and snapped numerous axles over the years but all the banjo failures have been from the centre out.
Either spiders splitting in half or loosing teeth and overriding each other (then splitting the centre carrier in half.) or the small spiders
overheating on the centre pin causing a failure as described above.
But has anyone here actually had a banjo crown wheel and pinion fail on there cars.
What I mean by that is a actual crown wheel or pinion that has had the teeth fail.
I do not mean as a after affect to spider gears being spat into them or centre giving way and breaking but a out and out tooth failure.
If you have can you describe in what circumstance.
The reason I ask is that I have seen a fair amount of salisbury and hilux diffs where they have suffered out and out pinion or crown wheel
failure but not a banjo gear set.
Also in fairness to the banjo as well, a centre that has wear in the carrier which allows the spiders to move further apart, therefor giving
less tooth contact is a lot more likely to go bag than a a carrier with no wear/ movement.
This may be a lot more common problem than a lot of people may think.
For example in the last big clean out of banjo centres I did I tossed out twenty odd carriers and kept two, all the rest were flogged out.
So with the diffs that everyone has had fail how many were actually in good condition to start with.
I am of course talking about the open wheel centres above from past experience the LSD centres are worse for blowing up because of the
even smaller spider gears in them.
On another note the longest lasting banjo diffs I have ever owned were all cig lockers which solved the spider gear problems.
Cheers Paul.
i agree ive broken a few,always the spider gears,the crown gear and the pinion gears hold up fine.i find that the holes in the diff case that the pinion shaft goes thew.thoes holes in the cast become oval and allows the pinion shaft to move and the spider gears smash.also the the bearing cases seem to split otherwise they are a good desighn.
#57
_nips060_
Posted 08 October 2011 - 09:40 AM
#58
_Trentm_
Posted 12 October 2011 - 03:49 PM
cheers, Trent.
#59
_nips060_
Posted 02 November 2011 - 12:58 PM
Nips whats the URL for the Ebay listing? I like this option I rung the seller his name is Steve and was very helpfull but he told me that he needs some internal measurements of the gears etc before he can check with the manufacturer to see if they have one that fits a open wheeler banjo. I didn't know what the measurements were? (does anyone know). Anyway about $450 dollars to buy - not a bad option I would have thought. Any other comments about this product?
cheers, Trent.
Hi I did see these on EBay and saved the link, have not seen again. From what I have read they are Ok but as soon as they start to slip there is no friction to stop it slipping. They are metal on metal.
#60
_rorym_
Posted 02 November 2011 - 09:53 PM
R
#61
_2ELCS_
Posted 03 November 2011 - 07:54 AM
It would be easier to get World Peace than make a banjo work without breaking...but Heath...be my guest....
R
He's too busy breaking cars Rory???
#62
Posted 03 November 2011 - 08:21 AM
#63
_2ELCS_
Posted 03 November 2011 - 08:50 AM
#64
_CHOPPER_
Posted 03 November 2011 - 10:37 AM
It would be easier to get World Peace than make a banjo work without breaking...but Heath...be my guest....
R
It's been about 20 years since I broke a banjo diff. The V8 Salisbury upgrade works a treat.
#65
_rorym_
Posted 03 November 2011 - 11:26 AM
R
#66
_rob350hatch_
Posted 03 November 2011 - 02:34 PM
Edited by rob350hatch, 03 November 2011 - 02:34 PM.
#67
_2ELCS_
Posted 03 November 2011 - 02:39 PM
#68
_CHOPPER_
Posted 03 November 2011 - 04:01 PM
#69
_Trentm_
Posted 15 November 2011 - 07:43 PM
#70
_nips060_
#71
Posted 31 December 2011 - 02:40 PM
Cheers Blake
#72
_CHOPPER_
Posted 31 December 2011 - 06:04 PM
#73
_CHOPPER_
Posted 31 December 2011 - 06:57 PM
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