Sequential shifter conversions??

[oldcorollas]

so thjis is my late night thread, since everyone else has buggered off for Golden Week and i am still in lab


how hard would it be to convert a regular H pattern shift mechanism to a sequential shift pattern..
by hard i mean "physically feasible" in a relatively compact setup

i understand how the sequential shift barrel thing works, and realise it is better to have it moving the shift forks directly.. but we all know thats not going to happen to a T50 or W5X without a fairly extensive modification of the main housing... ie, not gonna happen..

however, i stumbled across theIkeya seq shifter, available for a number of cars, and the videos look pretty slick(20meg or so.. but good to see it in action!!)
small vid(less than 1meg) showing shifter going back and forth..
more explanation and some inside pics!!

(keep in mind they are about $1.5K... there is a lotus elise version for US$2.8K
and more.. US$900

changing a FWD is pretty easy, since it is remote mounted, but for the T and W box, it requires a modded extension housing and probably shift rods for a more direct action....

anyway, it is possible to do by modding the extension housing to accept a barrel shifter and changing ends of shift rods, and also the Ikey way by moving the normal shift mechanism via a sifferent shifter, so it is drop in...

has anyone else had these thoughts, know of other similar product???

once again, LEASE LIMIT REPLIES TO TECHNICAL INPUT... thansk y'all..

Cya Stewart

[oldcorollas]

there are a number of "shift up only" mechanisms around.. like the Stillway for supra 6speed etc, but i think this is impractical for a road car

also, air shifters, whilst pretty damn snazzy, may not be the best option for a road car either

it is possible to have it hydraulically activated (as in shift lever is master), but that may give imprecision to the shift, so something directly mechanical seems the best option (in terms of cost, reliability, and practicality on a road going car).
the ability to select neutral between gears is also very desirable (like the ikeya one does)

hmmm.....

[ViPeR_NiPPleX]

damn... snazzy and expensive

one concern i have with the sequential to H pattern adaptors... what happens if a gear doesnt want to engage? will you simply not be able to push/pull the shifter?

[hemi twofifteen turbo]

yeah i thought about doing it a while ago too. did u mean also doing the clutch too?
I was going to have a controller sensing engine RPM/wheel rpm and apply a pressure to the shifter in proportion to how matched thge speeds were (so not to screw the syncro's) or even instead just springs that compress on the shifter and let the shifter move when it's ready etc. I wanted something that could even run as an auto with a clutch that will engage in propertion to accelerator position, so at the lights if you floor it just drops the clutch for u or if u just cruise off it does it real gentle...
something over the orig shifter stick so u can see it move automatically and grab it and take over whenever u wanted..

I dont know why i just like making shit hehe maybe one day

[oldcorollas]

nah, not talking about clutchless transmissions.. thats another project and something not really good for street...

just talking about replacing the H pattern shifter on a normal box, either as a drop in or as a modded extension housing, for a nicer method

as much as i like the H pattern, i think i need a project also

[sam-131]

i wonder if you can get one for a supra 6 six speed if so a friend of a friend modded one of those short shift selecters to fit a w58 from talking over msn he rekons it was a peace of piss no real mods need to be done just a lil farking around so IF a Sequential shifter is available for a 6 speed it should with some mods work go on a w58 i gotta get more info next time i see him

or would'nt it be easyer to get one for say an example a s13 and mod it to fit well thats what i'd be doing although what are you looking at doing making customs from scratch? if so i can forsee headaches either way it's stating to hurt my head thinking about it

[oldcorollas]

the $1.5-2K price tag prevents me from getting one to play with
heck for maybe $3K, they would make one for a W5X as well
thats the main issue, there are not many around, because not many people will pay 2 or 3K for a shifter...
a proper sequential box is more like $10-20K... so it's out of reach for most kiddies...

[sam-131]

well bugery that took the wind out of my sail
jesus for 3k you could make a custom make that many customs 3k thats insane for a shifter i think i'll stick to my H pattern

[oldcorollas]

well bugery that took the wind out of my sail
jesus for 3k you could make a custom make that many customs 3k thats insane for a shifter i think i'll stick to my H pattern

i'm trying to say it shouldn't NEED to cost that much

[rob]

i noticed an advertisement for these in zoom magazine last night while laying some big brown cable for telstra

i noticed that they didnt make them for toyota boxes and was thinking how are they different to nissan and mazda boxes

has anyone compared the shift mechanism for all 3 makes?

[wilbo666]

I propose a microcontroller controlled system!

It take the input from the sequential shifter and uses that to drive solenoids connected to a shifter stub.

I'm thinking that 2 dual action solenoids would be enough, one pulls the shifter along the neutral bar, the other does the 1st+2nd, 3rd+4th and then 5th movement.

comments?

Cheers
Wilbo

[.T.]

i looked into this years ago using a micro controller & 2-direction electromagnetic solenoids. the solenoids are available, but rather expensive - also they were rather powerful - if the linkage did not work propperly i suspect they would quite hapily bend the forks etc.

there are other mechanical methods you can use - a drum with groves in it - however i am yet to find a compact dual direction indexing ratchet.

T

[mrshin]

I think the reason they are not available for Toyota's is the sheer wank factor... But who am I to judge;-)

While I haven't tried one, I gather these units you can buy for Nissan etc. have a lot of little bits inside, are bulky and ugly, don't really shift that nicely, and don't live an overly long or happy life if used with enthusiasm. I will admit that I do always enjoy an opportunity to drive a car with a 'bogan shifter' auto (B&M etc.), it's good fun!

If electric solonoids are used, they don't HAVE to be set up to break the gearbox. A circuit could be used to limit the current, and also bring on the force gradually, rather than tearing things to pieces. This could also be connected to engine load/throttle position to allow the synchro's to live some kind of life when driven gently.

I still reckon that a standard (i.e. non dog engagement etc.) gearbox can be shifted as quickly as it will withstand with a decent arm though - if you're struggling, then learn to drive and buy a gym membership!

[thechuckster]

i'm with wilbo - plus you could use the micro to do clutch control.

edit: clutch actuation could be servo rather than solenoid - that way you could control slippage and harshness of change.

[kingmick]

there is an australian made one called RENEGADE. they make them for top loaders, super t10's etc. they go for around $635 and are made well. you might be able to make them work on toyota boxes, i havnt had a look at one but ive sold around 20 of them. they are heavy duty.