Sequential gearchange direction

Sequential gearchange direction

Author
Discussion

dannylt

Original Poster:

1,906 posts

285 months

Wednesday 19th February 2003
quotequote all
The demo car has push forward = change up, and I thought that was the standard, but on the EVO ECOTY CD thingy I noticed it's reversed. What is the standard? Surely it gets confusing swapping around.

nigel greensall

75 posts

256 months

Wednesday 19th February 2003
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Hi Danny

The gearchange direction is really person preference, i have driven about 30 Radicals so far and each time have to check with the owners the direction of their shift ! To be safe if it is forward for up i just use the palm of my hand for up-shifts to avoid going the wrong direction.

It snowed in Guadix last weekend but was still great fun !

Nigel

whatever

2,174 posts

271 months

Thursday 20th February 2003
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This is something which always interests me (well, a bit anyway).

To my mind, it seems most logical to have a forward press for down and a backward press for up. I think this is logical in terms of the g forces acting on the driver at the time.

However, there seems to be a roughly even split between this way round and the other, though I can't reason an explanation for doing it the other way round.

Nildram

293 posts

262 months

Thursday 20th February 2003
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It all depends what you're used to. I don't think it takes long to get used to either way. BUT if you're just beginning, then backwards for up is more logical for your body if not your mind. I was seriously considering racing something else until I realised that it can be reversed on the Radical to be the correct way around. :-)

dannylt

Original Poster:

1,906 posts

285 months

Friday 21st February 2003
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Well, on road bikes pushing down (like pushing forward) changes down, and pulling up (like pulling the lever back) changes up. So the "standard" Radical set up feels a bit non intuitive. But apparently race bikes are the other way around anyway. I'll probably get used to it pretty quickly anyhow I hope!

williamball

4,281 posts

283 months

Tuesday 15th April 2003
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Just an observation from the 'blade, but it's push forward to change up, and pull back to change down. As I hire the car out, I can confirm that this is the less 'instinctive' way round for most drivers, who naturally want to pull back to change up. However, once used to it, I can give a good reason for it to be a 'better' direction. I can think of no time when you'd want to change up multiple gears in one go, but lots of time when you have to change down multiple gears at once - say 6th to 4th. Pushing the lever forward means moving your whole arm, while pulling it back means just using fingertips, so it's a lot quicker doing multiple shifts pulling back [with fingertips] rather than pushing forward, thus pulling back makes more sense for downshifts....all IMHO etc.

WB

>> Edited by williamball on Tuesday 15th April 11:26

charisma

93 posts

259 months

Tuesday 15th April 2003
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When I lend my Megabusa out, the last thing I want is for someone to change down whilst doing 10,000+ rpm.

Surely the direction should be standardised.

Can we have a survey?

(In the factory built Megabusa forwards is down).

Nildram

293 posts

262 months

Tuesday 15th April 2003
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If you make sure people change up without using the clutch, then they shouldn't be able to get it wrong as they will simply be unable to engage the gear...

dannylt

Original Poster:

1,906 posts

285 months

Tuesday 15th April 2003
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Ouch! Not sure I like that idea! Poor gearbox...

Nildram

293 posts

262 months

Tuesday 15th April 2003
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My gearbox positively loves it (and you're wasting time if you do use the clutch). Besides, you'll blow your engine long before you wear out the gearbox... :-)

williamball

4,281 posts

283 months

Wednesday 16th April 2003
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Nildram said: My gearbox positively loves it (and you're wasting time if you do use the clutch). Besides, you'll blow your engine long before you wear out the gearbox... :-)



Not sure about that one. I recently had to replace the 3rd/4th gears on the 'blade as they were pitted where the hardening had come off. Even though the dogs are fairly hefty, it still can transmit the imact through the gear teeth.

WB

Nildram

293 posts

262 months

Wednesday 16th April 2003
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Yeah, but dogs will wear whether you use the clutch or not. These boxes change so sweetly without the clutch that I doubt there's significant extra wear on the dogs, and you save something like 0.1s on each gear change...

Steve_T

6,356 posts

273 months

Wednesday 16th April 2003
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The gear box on my bike always gives its sweetest change up without using the clutch, can't see why it's any different in this case.

Steve.

williamball

4,281 posts

283 months

Wednesday 16th April 2003
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Nildram said: Yeah, but dogs will wear whether you use the clutch or not. These boxes change so sweetly without the clutch that I doubt there's significant extra wear on the dogs, and you save something like 0.1s on each gear change...


Don't think I was talking about the dogs - I did say they were plenty meaty enough, it's the gear teeth I'd be concerned about. I'm guessing that there will be more impact on the teeth without the clutch when the dogs bang together. I only base this on the fact that I had wear, impact style wear, on the face of a few gears. Not true that the engine will blow before the box wears though.

Each to his own though; I personally choose to use the clutch, as having had the motor apart it seems relatively fragile in the box, but I'm quite sure others will change clutchless and never have a problem.

WB