Manual Transmission Club

[chrcal14]

I guess when I'm heavier on the throttle, then the transition from 1st to 2nd is neck jarring for passengers. I tried shifting at 3k, 3500, and 4k. THe longer I wait to shift, the more RPMs it drops. I.e. shifting at 4k drops the RPMS to 2500 before I get going again. It's such a fast drop.

But if I'm being causal with the throttle then shifts are smooth and no bunny hopping.

Well, I appreciate the comments. I was hoping there was a magic formula to address it. I thought I heard larger tires impacts this issue, but don't recall if it was for better or worse.


Still need a mod for heated shift knob...Otherwise I'll have to pull my Michael Jackson gloves out.

I think you're onto something there. Drive casual.

I'm a low RPM kind of guy. From glancing down, 2500 is about where my gut-o-meter tells me to shift. It actually gave me some gip when I first got my Jeep, as 2nd to 3rd gear doesn't like 2500, it's a fan of 3000. Didn't take me long to just know to run 2nd a bit more, I don't even think about it now. And you get the situational thing down pretty quick too, you can upshift at very low RPMs flat and downhill. I cruise along flat 55mph roads in 6th with just a little pedal. I have my coasting moments in neutral and know when to just pop it down into gear to keep on trucking.

I find moments of joy in realizing I know the Jeep now, that I just shift it second nature. Every so often I just catch myself doing it. Makes me smile.

It's a simple pleasure that only comes standard in a manual.

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[hawkijon]

I think you're onto something there. Drive casual.

I'm a low RPM kind of guy. From glancing down, 2500 is about where my gut-o-meter tells me to shift. It actually gave me some gip when I first got my Jeep, as 2nd to 3rd gear doesn't like 2500, it's a fan of 3000. Didn't take me long to just know to run 2nd a bit more, I don't even think about it now. And you get the situational thing down pretty quick too, you can upshift at very low RPMs flat and downhill. I cruise along flat 55mph roads in 6th with just a little pedal. I have my coasting moments in neutral and know when to just pop it down into gear to keep on trucking.

I find moments of joy in realizing I know the Jeep now, that I just shift it second nature. Every so often I just catch myself doing it. Makes me smile.

It's a simple pleasure that only comes standard in a manual.

you said it man!!! i totatlly agree... miles of smiles!!!

 

[mojocho]

The neck jarring is caused by the 1st to 2nd fast shift with the gas still pressed too much. You can accelerate pretty fast in first, lets say to 3500 rpm, then, more deliberately shift to second and match the revs -- so you do not lurch forward. If the gas pedal is pressed too much during the shift, then the Jeep will always lurch forward because your dropping the clutch with the engine rev'd too much.

This is what I would have expected. I still get the lurch even with no gas input.
So for example, I start rolling in first with gas coming on and clutch transitioning, release clutch and continue accelerating in 1st to about 3500 - 4000. off gas, clutch in, shift to 2nd, on gas, big lurch. I tried this in a parking lot. with this method, by RPMs drop from 4000 to 2500 between letting off the clutch-shifting and getting on gas. I must be coming back on the gas too much-too soon. I'll play with that more.

If I go slower and shift around 2500-3000, no lurching.

I'll try to start in 2nd more or really just use 1st to get forward momentum and shift much sooner and see that that goes.

Appreciate all the comments. Learning alot.

 

[mojocho]

I think you're onto something there. Drive casual.

...

It's a simple pleasure that only comes standard in a manual.

Yeah, this is my first truck with M/T where previous M/T are sporty cars or motorcycles. Must be my expectations. Not that I ever thought this was going to win any drag races, but must still not be approaching this. I'll admit I have a heavy foot. Even in my JKU with Auto, i'd be quick off the line more often than not...even with 35's and lift.

 

[hawkijon]

This is what I would have expected. I still get the lurch even with no gas input.
So for example, I start rolling in first with gas coming on and clutch transitioning, release clutch and continue accelerating in 1st to about 3500 - 4000. off gas, clutch in, shift to 2nd, on gas, big lurch. I tried this in a parking lot. with this method, by RPMs drop from 4000 to 2500 between letting off the clutch-shifting and getting on gas. I must be coming back on the gas too much-too soon. I'll play with that more.

If I go slower and shift around 2500-3000, no lurching.

I'll try to start in 2nd more or really just use 1st to get forward momentum and shift much sooner and see that that goes.

Appreciate all the comments. Learning alot.

I understand what your saying. With this modern clutch system, the feeling is very binary...(either engaged or disengaged) and takes a some practice to find that sweet spot for smooth transitioning between clutch engagement/disengagement, shifting and rpm. They are all separate variables changing all the time, but when you find your groove, its perfect harmony and the "grinds" become "grins"...it just takes time and practice..i think what makes it difficult by default is how quite the truck is and not being able to hear the rpm's until the are soaring. So, it becomes more of a sense of feel in the steering wheel and inertia G forces in the seat, unless your constantly eyeing the tach.

 

[Gatorized]

The other driver thing is real as well. Not only are most people unable to drive manuals, they're not accustomed to driving around them. I've had a few people right on my bumper on hills that I probably wouldn't have given much thought to with recent auto transmissions. I enjoy the sport of looking in the rearview as I intentionally drift back a little, just to put the reminder out there in the general population. Make it a fun and educational thing.

This is where the "hill hold" shines - no need to worry about those idiots pulling up to your bumper on hills anymore!

 

[Ichthus]

After only a week I’ve rounded the first 1000 miles in my JTR 6spd with factory Falken M/Ts and am entirely impressed with the ride, more importantly the fuel economy. If you’re on the fence about a Jeep truck, I easily managed 19+ MPG between 70 & 75 MPH, but will say the best average economy I saw was 22 MPG with cruise set 67 MPH. This truck rocks !!

Is that with a tonneau cover, or without?

 

[hawkijon]

Is that with a tonneau cover, or without?

I had the soft tonneau cover rolled up off and on for about 400 miles of that 1000miles. I didnt see much change on the eco meter, nor did i see difference on my recorded fuelings.

 

[chrcal14]

This is where the "hill hold" shines - no need to worry about those idiots pulling up to your bumper on hills anymore!

True, but I'm an old hand at half clutch off brake on gas other half out.

I just like to scare 'em.

 

[Gatorized]

True, but I'm an old hand at half clutch off brake on gas other half out.

I just like to scare 'em.

I do the same! LOL!

 

[Puttyandnapalm]

Anyone swap the shift knob yet?

 

[mojocho]

Anyone swap the shift knob yet?

I'd love to. Would the reverse lock ring cause any issues?

 

[Puttyandnapalm]

I'd love to. Would the reverse lock ring cause any issues?

speeddawg has an adapter, but I only found one pic

 

[Dr Kel]

Just ran from Chicago to Cleveland. Got 21.5 across the entire trip. The mileage really dropped in Ohio. For the record, I had the cruise set at 74 and am still running stock tires/wheels. The fist hour and a half was in heavier traffic with speeds ranging from stopped up to 75 or so.

 

[mojocho]

speeddawg has an adapter, but I only found one pic

Nice find!

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