Rev Matching

Topic 13444 | Page 1

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JayB's Comment
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I'm a lil confused. On rev matching on downshift eaton fuller 10 I start a new job Monday driving a concrete. Ready mix truck I can up shift fine its just the downshift I'm sc out of my mind about

Robert B. (The Dragon) ye's Comment
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10 and 15 will work on any transmission whether it's a 10,13, or 18 speed. It'll get you in the gear you need until you drive for a while and figure out where the truck prefers to be shifted.

6 string rhythm's Comment
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I've always used 11 and 14 as a guideline. Not to muddle the subject or seem like I'm randomly arguing with Robert. Your school should've covered the vanilla basics on shifting and what RPM to watch for. Keep your eye on that tachometer.

Also keep in mind that the load you're pulling will affect your shift points - or rather how fast your have to shift, as will your speed (e.g. going up or downhill). Judging your road speed with your shift points is something that will only come with experience. You're gonna grind and sputter. Everybody does. Use those vanilla guidelines your school taught you, and what Robert and I suggested (we are saying the same thing), and eventually when you figure out that road speed and your RPMs, that's where it really starts clicking and getting smooth.

HOS:

Hours Of Service

HOS refers to the logbook hours of service regulations.
Ruminator's Comment
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Ok. I'm Going to assumie your double clutching.

Your up shifts that you're doing well on are probably at 1300-1500 rpm range right Traveling in 6th gear 20-25 mph your rpms are 1500. Clutch neutral clutch 7th Done!

Downshifting When u downshift. You are still shifting at that -1500- RPM Both up and downs are at that 1500 number. When they say downshift at 1100. That's when u begin your first part of your shift. Ok so at 1100 rpm. Tap clutch only. Shift to neutral NO THROTTLE . Then quick tap on throttle to get rpm to 1500. Not a press and hold on throttle but a quick tap and release. Then tap clutch and put in your lower gear

As was said above. Your rpm points may differ. 1100-1500 1000-1400 1000-1500. 1100-1600

But it's that top number your aiming for your downshifts as well as your up shifts

Example 1100-1500 rpm range You're in 7th gear at 25 mph rpm in the sweet spot at 1200/1300 Turn coming up Apply brake only Your rpms and speed will drop automatically So now your at 15 mph 1000-1100 rpms Foot off brake. Clutch to neutral Foot on throttle only. Tap to rev to 1500 Quickly clutch shift to 6th gear Do not let rpms drop to 1100 or under. You may have to re rev to get back to 1500 again

I hope this helped

Double Clutch:

To engage and then disengage the clutch twice for every gear change.

When double clutching you will push in the clutch, take the gearshift out of gear, release the clutch, press the clutch in again, shift the gearshift into the next gear, then release the clutch.

This is done on standard transmissions which do not have synchronizers in them, like those found in almost all Class A trucks.

Double Clutching:

To engage and then disengage the clutch twice for every gear change.

When double clutching you will push in the clutch, take the gearshift out of gear, release the clutch, press the clutch in again, shift the gearshift into the next gear, then release the clutch.

This is done on standard transmissions which do not have synchronizers in them, like those found in almost all Class A trucks.

JayB's Comment
member avatar

Thanks 6 string and I didn't go to CDL school imma have to look up what 11and 15 means I've had my CDL for 3 years now and never driven till I got offered. This job

I've always used 11 and 14 as a guideline. Not to muddle the subject or seem like I'm randomly arguing with Robert. Your school should've covered the vanilla basics on shifting and what RPM to watch for. Keep your eye on that tachometer.

Also keep in mind that the load you're pulling will affect your shift points - or rather how fast your have to shift, as will your speed (e.g. going up or downhill). Judging your road speed with your shift points is something that will only come with experience. You're gonna grind and sputter. Everybody does. Use those vanilla guidelines your school taught you, and what Robert and I suggested (we are saying the same thing), and eventually when you figure out that road speed and your RPMs, that's where it really starts clicking and getting smooth.

CDL:

Commercial Driver's License (CDL)

A CDL is required to drive any of the following vehicles:

  • Any combination of vehicles with a gross combined weight rating (GCWR) of 26,001 or more pounds, providing the gross vehicle weight rating (GVWR) of the vehicle being towed is in excess of 10,000 pounds.
  • Any single vehicle with a GVWR of 26,001 or more pounds, or any such vehicle towing another not in excess of 10,000 pounds.
  • Any vehicle, regardless of size, designed to transport 16 or more persons, including the driver.
  • Any vehicle required by federal regulations to be placarded while transporting hazardous materials.

HOS:

Hours Of Service

HOS refers to the logbook hours of service regulations.
JayB's Comment
member avatar

Never mind bout the 11/15 it slap me in the face what it means thanks everyone if someone could make a video of downshifting rev matching i tryed youtubeing everyone is doing in bmws and Hondas...

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