Straight cut gears for t50

[RobertoX]

Hi guys, when im sliding etc, i found the stock t50 with hd clutch, new shifter bushes and redline anti shock basically unshiftable over 6000rpm (4ac) i had to back off (which lost me the battle)... i dont know what is going on? 4ages rev well over that, hrm...

my car wouldnt make more than 90rwkw but stacks of low rpm torque, i want to keep weight down, i dont want a supra box

so i was wondering what the go would be with a straight cut 2nd and 3rd gear, possibly 4th...

i know quaife do them, but...

i dont mind stock ratios either

i just dont want to break the box basically

the car isnt street driven (well not often)

cost isnt a big issue, it will just put it in an order of importance

[mc68]

wish there was a cheaper alternative dave....but quaifes dogbox costs like 3300 pounds....and i dont know of any other companies making gear sets for the humble box.....

the problem with you box in the 71 is thats its old! the synchros have no love at that speed.

do t50's strip gears often? i just thought that the mainshaft twisted with excessive torque....as you still smash synchros with straight cut gears...

[Blown86]

It may not be your box, could be your clutch.... If you use it??



Perhaps it's the linkage or selector forks bending or twisting or just a generally tired gearbox with shagged synchromesh, is it fresh or a million Km old?



It's not really straight cut gears you need but actually to ditch the synchros and replace with dog engagement for faster shifting. The two do usually come together anyway.

[mc68]

theres alot of synchro straight cut kits for other boxes going around...

but! all dog boxes are straight cut, give or take...thing is when u wear out a dog (which will be faster than synchros do) you have to replace the whole gear with it, as they are connected to the gear, unlike synchro rings.

[mattysshop]

try and find a TRD gear set equiped T-50 on yahoo auctions... sollit could get T-50 gear sets... but for..

1st & 2nd - $1875
1st 2nd 3rd 5th - $2804
... ouch...

[Hen is a total nutcase]

Some brands that spring to mind are: Quaife, TRD, Albins, PPG, Modena. Have a chat to some of the rally guys to see what they are using.

However I doubt that is the cause of your problem. Maybe the box is worn out and just needs replacing. Or clutch issues?

Hen

[pro_k]

Try Albins Gearboxes www.albinsgear.com.au

Not sure if they do T50 gears anymore, however worth a try. It might take some time to have it done.

Ive got a Albins gearset in my Rally car and it has been excellent. Handles a fair bit of abuse.

The weak point on T50's are synchros. If you dont need close ratio its probably best to have it rebuilt well.

[RobertoX]

yeah i will try with a rebuild first, would the late model jdm larger second gear syncro work in an aus box?

[RobertoX]

thanks for all the replies so far http://www.ae86drivingclub.com.au/forums/emoticons/smile.gif

[monkeymajik]

I aint no expert by any means but it sounds like a clutch prob?

This is good info about the straight cut gears though.

[ae86 drifter]

A lot of information about t50 gear ratios and aftermarket parts.

http://home.clear.net.nz/pages/phil.bradsh...ransmission.htm (http://home.clear.net.nz/pages/phil.bradshaw/transmission.htm)

[slydar]

i think it is, worn syncro's. bent selctor forks.

albins gears and the ones matty mentioned arent straight cut. theyre just differant ratios.

dave we will have a kouki box in about 6 weeks.

there were 2 albins boxes on the clubman forum about a month ago dave.

also i will find out about that R&P for you today i think.. just going to ask when i see him, should be tonight have some shit to drop off.

[slydar]

ooohhh i see chris is browsing this topic..

go on, start bragging chris, i would http://www.ae86drivingclub.com.au/forums/emoticons/tongue.gif

[slydar]

damn, he didnt reply.

[SprinterTRD]

Yayger performance sells gearsets for the T50, the gears have replaceable dogs

[45aken]

PAR engineering,
they did my wrx box-never looked back.

and remember helical gears are stronger than straight cut, the only downside is they provide thrust.

par can do anything you want custom.

[pro_k]

i think it is, worn syncro's. bent selctor forks.

albins gears and the ones matty mentioned arent straight cut. theyre just differant ratios.

dave we will have a kouki box in about 6 weeks.

there were 2 albins boxes on the clubman forum about a month ago dave.

also i will find out about that R&P for you today i think.. just going to ask when i see him, should be tonight have some shit to drop off.[/b]


And Slydar keeps crapping on....Which albins gears have you worked with or used?

Please stop spreading your limited knowledge.

Take advise from people who know their stuff like SprinterTRD

[3sglevin]

I used an Albins gearset a couple of years ago in my t50 and they where great I changed 1st 2nd and thrid but left the stock 4th and 5th. I didnt do it for strength reasons though I needed better ratio's.

I dont think this is a gear set issue though, I dont know what the shock proof oil is like in a syncro box, but i had oil related shifting problems to start with. What was explained to me was when the gearbox is being driven and you arent using say third gear so we are in second and revving the ringer off it, the oil builds up behind the syncro's and when you go to shift into third you have to push all the oil out the back of the syncro before you can selected a gear. Now I might be very wrong here but this sounds like part of the problem, or as sprinterTRD suggested the little dog teeth are worn out.

[COS61AE86RACER]

Yager performance sells gearsets for the T50, the gears have replaceable dogs[/b]

Yeah there nice too http://www.ae86drivingclub.com.au/forums/emoticons/2thumbs.gif http://www.ae86drivingclub.com.au/forums/emoticons/greenbounce.gif

Love my new box its awesome, be prepared to pay rather large amounts of coin tho boys, good gear is not cheap http://www.ae86drivingclub.com.au/forums/emoticons/wink.gif

Catch ya
Chris O

[slydar]

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i think it is, worn syncro's. bent selctor forks.

albins gears and the ones matty mentioned arent straight cut. theyre just differant ratios.

dave we will have a kouki box in about 6 weeks.

there were 2 albins boxes on the clubman forum about a month ago dave.

also i will find out about that R&P for you today i think.. just going to ask when i see him, should be tonight have some shit to drop off.[/b]


And Slydar keeps crapping on....Which albins gears have you worked with or used?

Please stop spreading your limited knowledge.

Take advise from people who know their stuff like SprinterTRD
[/b]

what information are you adding? and what information did i provide that was incorrect? albins gearsets, the ones i have priced and considered buying, are not a straight cut dog engagement gear set. they retain syncro's.

likewise the TRD set matt described are just ratio changes. trd do also do a dog box with a 1:1 5th. but that is obviously not the item matt is talking about.

you may not have noticed, but what is happening here is a group of enthusiasts sharing their knowlege/experiance. if you feel you are more knowlegeable than some one who is contributing, please go ahead and make a contribution/corection.

[pro_k]

Please get your facts straight before you ask me what I might be adding.

The Albins gearset (which used to be made) for the T50 is Straight Cut! Maybe check with the workshops you visit and usually regurgitate information from...

I am sure you can buy Helical Cut gears from Albins as well (at a cheaper price).

You also dont seem to realize that Spur cut gears dont always come in the form of dog engagement.

You have mixed up Dog engagement as being the same as straight cut! Heres something for you to learn and repeat elsewhere..

Im sorry if I come accross as being harsh on you, however everytime I read a thread with your input its usually full of false information.

I hope you learnt something....

Now maybe you can visit a workshop and ask them which gears are stronger - Straight cut or Helical? http://www.ae86drivingclub.com.au/forums/emoticons/rolleyes.gif

[slydar]

it is obvious even by looking helical are stronger, there is more gear surface/contact patch. the reason aftermarket manufacturers use straight cut gears is they are easier to manufacture, engage easier, have less drag, and NVH is not a consideration.

virtually all straight cut gears are dog engagement.
so albins make/have made a straight cut set aswell as syncro? i did not know that no.

nothing ive said is specifically wrong or misleading.

ive asked you to leave the attitude out.

[Billzilla]

Slightly helical cut gears are strongest, but lose more power over straight cut.
I have both in one of my T-50's, and it has synchromesh on all gears.

[tom210]

i enquired about trd gearsets, to which i was answered "they would be no stronger than the originals, they are helical cut and retain synchro's they are simply just different ratios", quaife do make a straight cut dog gearset for the t50 which was made for trd, this kit retails for approx $10,800, plus you also have to buy a quaife modified t50 housing which is on an exchange basis this also adds approx $400 to the price before it gets here and is assembled, or once again you can pay a lil bit more and get them to assemble it for you. albens gears last i spoke to them no more than six months ago told me they do make gears for the t50 which changes the ratio of 1st, 2nd, 3rd they are helical cut, retain synchro's and are stronger than original as they are welded to the shafts as aposed to being retained by circlips, which works quite well, i have used there gearset before in a vw gear box with great success, i cut my box breakage from 3 a month down to 1 in two years. There are other manufacturers of gearsets hollinger are interested in making gearsets but at a cost of course, par engineering i believe make a straight cut dog gear set, which i'm currently waiting on a price for. However all that said your gearbox issues sound to be like what someone else said and in the oil, i'd start with the simpler and cheaper option first and go from there.

[mc68]

also ad that quaife's gearset changes first to a dogleg.

[Dems]

I remember seeing OS GIKEN gear sets being advertised in an old HPI. maybe contact Otomoto and see if they can hook something up.

[RobertoX]

not keen on dog leg

os giken dont do for t50, i have already enquired

looks like im going supra argh!

[Hen is a total nutcase]

Why not just check your clutch and replace the T50? I used a T50 with more power and lots of abuse for two years. I broke one, and that was autocrossing, not drifting.

They are suprisingly strong.

Hen

[rallystanza]

I totally Agree with this nutcase character.

Fix/Check your clutch both mechanically and hydraulically.

Check/Rebuild your gearbox. All a hell of a lot cheaper than what your proposing with gear sets.

A working clutch system and a working T50 will be more than adequate.

And Hens car did take a hell of a time and just lapped it up.

Jez

[RobertoX]

the clutch is new and since it was installed the uptake is about 10mm off the floor, i have bled it etc but....

[Hen is a total nutcase]

If the takeup is too low, you should be able to adjust this at the point where the pedal attaches to the master cylinder piston.

And another solution to the initial problem to starting working out at the gym and bulk up those arms so you can snap it between the gears regardless of the condition of the box.

An advantage of this plan is that this allows you to get sweaty with a bunch of other scantily clad men in a socially acceptable setting.... if that sort of thing floats your boat of course.

Hen

[roadsailing]

lawson, adjust your clutch, thats way too low.

i have explained the process numerous times, as have others - do a search on clutch adjusting.

and to repeat what others have said, straight cut gears won't help you one little bit.

[RobertoX]

thanks peoples

hen - i hope you fulfilled your own fantasies with that post

[RobertoX]

i just searched the whole forums and your post history and found nothing...

care to enlighten me?

thanks