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BEC Gear change
minimanred - 8/5/05 at 07:36 PM

what is everyones favorite method of changing up and down the gearbox?


Dillinger1977 - 8/5/05 at 07:40 PM

i havent built mine yet, but will (hopefully) be taking the racing game method of Back=up, fwd=down.


Lightning - 8/5/05 at 07:58 PM

Had a courtsey car which was a tiptronic Corsa (yes they do exist) You pushed to go up the box. Bloody awful car. Kept pulling instead of pushing. Unnatural. As the car accelarates (very slowly in the corsa) you should be pushed back and hence pull the stick back and visa versa


timvangemert - 8/5/05 at 08:00 PM

When you accelerate the BHP's will push you backwards into your seat. When you decelerate you will be forced into your seatbelts.

So downshifting is pushing and up-shifting is pulling.


OX - 8/5/05 at 08:16 PM

yip pull back to go up the box push to go down

but what do you do when you have paddels behind the steering wheel,do you pull back on the left or right to go up the box


Lightning - 8/5/05 at 08:19 PM

mine is up on the right down on the left.


PAUL FISHER - 8/5/05 at 08:40 PM

My car has a tiptronic gearbox push forward to go up gearbox,pull back to go down, so this is the way Ive set up my MK


colibriman - 8/5/05 at 09:06 PM

mine is forward for up.....but would prefer it the other way - just the way the cable length forced it to be


tadltd - 9/5/05 at 01:04 AM

It's easy to make it go the other way, Colin. You only need to mount the cable above/below one or other pivot (depending on your set-up).

I could have explained if you'd come over to help with the blimmin' wiring on the LMP!

Steve.


smart51 - 9/5/05 at 06:43 AM

All smarts are push forwards for up.


colibriman - 9/5/05 at 06:52 AM

quote:

It's easy to make it go the other way, Colin. You only need to mount the cable above/below one or other pivot (depending on your set-up).



I know Steve...just there's no room on other side of pivot either end...

I was late back from Aberdeen...and so knackered I couldn't move


ChrisGamlin - 9/5/05 at 08:15 AM

Definitely pull back for up, going with the acceleration. I guess like anything its whatever you get used to though, but its always best to go with the majority cos if you are used to changing gear the other way, you're not likely to find a fellow BEC owner that will let you have a quick go in their car!


Peteff - 9/5/05 at 09:09 AM

Which proves they are not that smart after all. Back for up. You still have to go forward for first though, why can't neutral be last ?.


ChrisGamlin - 9/5/05 at 09:23 AM

I imagine that they don't put it last for safety reasons, if neutral was last, then you'd have to know which gear you were in when changing down the box aiming for 1st, otherwise you'd run the risk of hitting neutral and so losing engine braking. As it is, once you're out of neutral, you can't accidentally select it with normal gear lever movements.


Coose - 9/5/05 at 10:43 AM

Left for up. Oh sorry, you mean one of those archaic gear levers in the transmission tunnel!?

Back for up..... Tried both and prefer it for the reasons mentioned....


Hellfire - 9/5/05 at 11:31 AM

Last Indy was back for up, this re-built one will be forward for up. Should be quite interesting


ChrisGamlin - 9/5/05 at 11:42 AM

.....and I predict after a piston exits stage left, the next engine will be back for up again


PAUL FISHER - 9/5/05 at 12:10 PM

quote:
Originally posted by ChrisGamlin
Definitely pull back for up, going with the acceleration. I guess like anything its whatever you get used to though, but its always best to go with the majority cos if you are used to changing gear the other way, you're not likely to find a fellow BEC owner that will let you have a quick go in their car!

Hellfires done it this way ,so they can let me have a drive of it when they have finished


Alez - 9/5/05 at 12:22 PM

I've had both. First one was pull for up and I found it very natural. I should mention that normal "H" gearboxes are in fact arranged that way (I'm talking about 1 to 2 and 3 to 4, where the stick moves on a straight line). Then second one was push for up. I found it unnatural and still do (I'm now used to it). I now have to think twice when I drive my other car (a Golf) and actually I've downshifted by mistake a couple of times in the Golf because of this. This had never happened when I had the first car. I would like to change to pull for up in the future, I find it way more intuitive.

Cheers,

Alex

[Edited on 9/5/05 by Alez]


tks - 16/5/05 at 01:51 PM

`that pulling force is rougher then pushing..???feeling??

i mean an bit enthausiastic when you have race spirit and then maybe thinggs can go wrong?/

TKS


colibriman - 16/5/05 at 02:28 PM

that pulling force is rougher then pushing..???feeling??

i mean an bit enthausiastic when you have race spirit and then maybe thinggs can go wrong?/

TKS


I tend to think not....during racing at the weekend I was banging the lever forward with waaaay too much enthusiasm..... heck it was great....!!

didnt break anything....the car performed fantastically....


ChrisGamlin - 16/5/05 at 02:35 PM

What / where have you been racing Colin?

BTW, I still have that oil pressure hose in my bag, I will get round to posting it!


colibriman - 16/5/05 at 04:29 PM

Chris,
It was sprints at Kames circuit here in Ayrshire.... Saturday anticlockwise , sunday clockwise...it's like 2 completely different places !
I'm registered in the scottish sprint championships, trouble is I'm in the same class as busa's..holding my own...'only' 3 seconds behind the nearest one

got your loom bit too...still not found the postbox yet either..


ChrisGamlin - 16/5/05 at 05:49 PM

Sounds good fun!

I'll do you a deal, Ill visit the postbox sometime this week if you do the same


Stu16v - 16/5/05 at 09:06 PM

So who voted for option number two then?


indykid - 17/5/05 at 08:24 AM

never mind that, who voted for the one in the middle?

tom


subk2002 - 17/5/05 at 09:45 AM

Nice avator colin

I voted for 1


Alez - 24/6/05 at 10:07 AM

quote:
Originally posted by Alez
I've had both. First one was pull for up and I found it very natural. I should mention that normal "H" gearboxes are in fact arranged that way (I'm talking about 1 to 2 and 3 to 4, where the stick moves on a straight line). Then second one was push for up. I found it unnatural and still do (I'm now used to it). I now have to think twice when I drive my other car (a Golf) and actually I've downshifted by mistake a couple of times in the Golf because of this. This had never happened when I had the first car. I would like to change to pull for up in the future, I find it way more intuitive.

Cheers,

Alex

[Edited on 9/5/05 by Alez]



Guys,

A good while after I posted the quoted text, I have changed my mind.. and I think I have a point so I'm sharing it.

I still find unnatural to push for upshifts and pull for downshifts as I find it contrary to the movement the the car puts in your body. However, I now use the clutch for downshifts only. I have found clutchless upshifts to be smoother by a lot. I was convinced by this excellent article which has been posted in other threads here:
http://www.hewland.com/svga/help.htm

To upshift, now I first push the gearstick gently, and shift by just lifting the throttle. That is, the shift doesn't happen until you take the "load" out of the gearbox, and when you do that, the gearstick magically lets your hand engage the next gear without any of the clunks associated with BECs. (When uphill, I haven't yet achieved shifts as smooth as when flat unless I'm accelerating quickly, but I suspect I just need to practice how to lift the throttle almost totally instead of totally, ie leave a bit of throttle.. maybe? Still smoother than clutch aided upshifts anyway.)

What happens now is that the natural movement that the cars puts in my body is actually helping me put a bit extra pressure on the gear stick at the very moment I lift the throttle, aiding quick and smooth shift.

Therefore although I still think that the most natural way is the opposite, I will be leaving my car as it is now (I had in mind changing it), and I now think that, in our particular type of gearbox, this helps natural upshifts, so I would treat this as kind of a special case?

Chris, Lightning, OX, timvangemert, Coose and the others who favour pull for upshifts, what do you think??

Cheers,

Alex

PS: can I change my vote now??


[Edited on 24/6/05 by Alez]


ChrisGamlin - 24/6/05 at 10:28 AM

I would say "stock up on gearbox spares"

Seriously though, even when I clutchless upchange, I dont find there's much force lunging you forward when you slightly lift, there certainly shouldnt be otherwise it shows you're slowing down which is kinda against the idea of doing it so maybe you're lifting a bit too much?


Alez - 24/6/05 at 10:39 AM

Hmm, interesting point Chris, I'll be experimenting with less lift, thanks!


Hellfire - 24/6/05 at 11:37 AM

In a normal car from neutral, you go 1st (up), 2nd (down), 3rd(up), 4th (down), 5th (up). To my reckoning thats 3 forward shifts to 2 back. Therefore I conclude that it is more natural to push up when upshifting (which is possibly why its called such)

Thats my theory and I'm sticking to it.


ChrisGamlin - 24/6/05 at 11:40 AM

Ah but my tintop has a 6 speed box, and its called upshifting because you're numerically going UP the gears

[Edited on 24/6/05 by ChrisGamlin]


mad-butcher - 24/6/05 at 05:47 PM

slightly off track but nephew has a midi moto with a chinese version of a honda C90 centrifugal clutch motor does about 60mph it's a pain. threw me up the road at 50 gearbox neutral up 1 for 1st then down for 2nd 3rd 4th and 1st there is no stop between 4th and 1st just goes round and round
tony