Reply to thread

See what others are reading now! Try Forums > Current Activity

Message

Hmm.. actually it does in my head.. at least in theory it does, after all, looking at the speed vs rpm chart here, its obvious that as speed climbs, rev drops become more exaggerated. Naturally we won't see much difference on 8-9K rpm engines, but I think it should be quite apparent on an 11K spoon engine.

Edit.. I think i interpret it wrong, I think you're right that FD does not affect rev drop points, but rather how high the engine is revving that affects the rev drop points. Opps on my part... :P

Which reminds me of something, that on low speed shifts, the 3rd gear rev drop is only like 1K? So in a way, how high the rpm during the point of shifting affects how much rpm drop.

[ATTACH=full]623711[/ATTACH]
Chart for a Y21 g/box if the car has enough torque to actually push the gears up to those speeds.

Of course, this is theory, and in my head, I also think that drag co-efficiency (Cd) and momentum would play a part in affecting real life rev drop points, which is why as speed climbs, there are differences in theory and practical applications.

During off throttle/shifting time, does the car still accelerate due to momentum, or does it start to decrease speed due to drag?

Man, got my head in a bind there.

<blockquote data-quote="shiroitenshi" data-source="post: 2267465" data-attributes="member: 27518">Hmm.. actually it does in my head.. at least in theory it does, after all, looking at the speed vs rpm chart here, its obvious that as speed climbs, rev drops become more exaggerated. Naturally we won&#039;t see much difference on 8-9K rpm engines, but I think it should be quite apparent on an 11K spoon engine.Edit.. I think i interpret it wrong, I think you&#039;re right that FD does not affect rev drop points, but rather how high the engine is revving that affects the rev drop points. Opps on my part... :PWhich reminds me of something, that on low speed shifts, the 3rd gear rev drop is only like 1K? So in a way, how high the rpm during the point of shifting affects how much rpm drop.[ATTACH=full]623711[/ATTACH]Chart for a Y21 g/box if the car has enough torque to actually push the gears up to those speeds.Of course, this is theory, and in my head, I also think that drag co-efficiency (Cd) and momentum would play a part in affecting real life rev drop points, which is why as speed climbs, there are differences in theory and practical applications.During off throttle/shifting time, does the car still accelerate due to momentum, or does it start to decrease speed due to drag?Man, got my head in a bind there.</blockquote>

[QUOTE="shiroitenshi, post: 2267465, member: 27518"] Hmm.. actually it does in my head.. at least in theory it does, after all, looking at the speed vs rpm chart here, its obvious that as speed climbs, rev drops become more exaggerated. Naturally we won't see much difference on 8-9K rpm engines, but I think it should be quite apparent on an 11K spoon engine. Edit.. I think i interpret it wrong, I think you're right that FD does not affect rev drop points, but rather how high the engine is revving that affects the rev drop points. Opps on my part... :P Which reminds me of something, that on low speed shifts, the 3rd gear rev drop is only like 1K? So in a way, how high the rpm during the point of shifting affects how much rpm drop. [ATTACH=full]623711[/ATTACH] Chart for a Y21 g/box if the car has enough torque to actually push the gears up to those speeds. Of course, this is theory, and in my head, I also think that drag co-efficiency (Cd) and momentum would play a part in affecting real life rev drop points, which is why as speed climbs, there are differences in theory and practical applications. During off throttle/shifting time, does the car still accelerate due to momentum, or does it start to decrease speed due to drag? Man, got my head in a bind there. [/QUOTE]

Verification

The Marketplace Latest

Perodua Alza convert new facelift body parts
- Started by jeff6126
- Exterior and Body
BMW E60 Msport Body Kit
- Started by jeff6126
- Exterior and Body
BMW F30 M3 mperformance front skirt lip
- Started by jeff6126
- Exterior and Body
Honda City 2014~19year Drive68 body kit
- Started by jeff6126
- Exterior and Body
Perodua Alza gear up body kit / spoiler
- Started by jeff6126
- Exterior and Body
Proton Saga Mix body kit
- Started by jeff6126
- Exterior and Body
Mitsubishi Lancer JS GTwing spoiler
- Started by jeff6126
- Exterior and Body
Honda Civic FD TypeR body kit
- Started by jeff6126
- Exterior and Body
Proton Satria GTi body kit / Evo front bonnet hood
- Started by jeff6126
- Exterior and Body
BMW F30 gts front bonnet hood with scoop
- Started by jeff6126
- Exterior and Body

Posts refresh every 5 minutes

DIY: Changing Myvi absorbers.... solves the kluk kluk sound.

Hi All,

Today I bring to you not a detailing journey of mine but a recent DIY that I did for my wife's Myvi. Car has been driven around for 7 years and it is giving out this "kluk kluk" sound on any uneven roads...

Beginner in Evo7

hello guys..just got my evo7 GT-A last week..just want some guide from the sifus about a few standard mods that we need to do as a beginner..not too ganas one lar..just a typical mods..my turbo knowledge is poor coz...

High boost, low rpm

Dear All,
Currently, i'm driving 1.8 Mivec Turbo. Sometimes, i experience this phenomena: High boost +/-0.6 @ 2k rpm. Car feels hardly to pick-up. Most of the time when gear dropping from 4th to 3rd. When I release...

Search

Enjoying Zerotohundred?

Log-in for an ad-less experience

Reply to thread

The Marketplace Latest

Perodua Alza convert new facelift body parts

BMW E60 Msport Body Kit

BMW F30 M3 mperformance front skirt lip

Honda City 2014~19year Drive68 body kit

Perodua Alza gear up body kit / spoiler

Proton Saga Mix body kit

Mitsubishi Lancer JS GTwing spoiler

Honda Civic FD TypeR body kit

Proton Satria GTi body kit / Evo front bonnet hood

BMW F30 gts front bonnet hood with scoop

Posts refresh every 5 minutes

Recent Posts

Performance Tire Prices(Pls Contribute The Price & Location to buy)

Tire Price list Zth

Paging for Hyundai Coupe owner, CCGT @ 28th May 2005

New GR Yaris Automatic & GR Supra Track Edition Now in Malaysia

2025 Volvo EX90 Wins World Luxury Car Award

Search

Online now

Enjoying Zerotohundred?