Speed limiter?

Jusplainwacky · 10-29-2022, 12:14 AM

While on a trip with high winds, I would be stepping on the pedal to the floor, and I couldn't get my rig to go faster than 70-75....and many times even past 60mph. I was towing a jeep and there were times I wanted to get around a big rig, but couldn't cause I couldn't get the rig to go any faster. I would have thought it would down shift or something.

Pete'sMH · 10-29-2022, 12:23 AM

Quote:

Originally Posted by Jusplainwacky

While on a trip with high winds, I would be stepping on the pedal to the floor, and I couldn't get my rig to go faster than 70-75....and many times even past 60mph. I was towing a jeep and there were times I wanted to get around a big rig, but couldn't cause I couldn't get the rig to go any faster. I would have thought it would down shift or something.

70-75! These things are happiest at about 65 on a good day!

Jusplainwacky · 10-29-2022, 01:08 AM

I was cruising across the California desert at 75...and I felt completely comfortable.

Jimbo56 · 10-29-2022, 02:00 AM

What makes you think it will go faster than 75 mph? Get you a chip. Throw a 10 speed tranny in it. Change the rear end.

**16ACE27** · 10-29-2022, 02:14 AM

Quote:

Originally Posted by Jusplainwacky

I was cruising across the California desert at 75...and I felt completely comfortable.

The factory speed limiter is set at 75 to 77 due to the speed rating of the OEM tires.

Lt Keefer · 10-29-2022, 03:24 AM

My 29M will do 80, but that is it. On our local toll road the speed limit is 85 and most travel 90 or 95. I can't keep up with the flow of traffic. But I agree with Pete, it drives better and gets better mileage at 60 - 65.

fourthgear · 10-29-2022, 01:44 PM

Towing a Jeep in high winds may be the determining factor .

Travelin' Texans · 10-29-2022, 03:38 PM

If you're driving a large motorhome 75 to 90 mph be sure your life insurance is paid up & the kids know where the paperworks at!
I'm sorry but if you're in that big of a hurry you should of left a day earlier or left the MH behind & took a flight.
Driving a MH at those speeds is extremely dangerous for you & everyone else on the highway with you! If me or mine were involved in an accident with a MH doing 90 mph the family of the MH owners best have a damn good lawyer.
Not to mention if yours has the Ford V10 your probably getting 1-2 mpg, if not negative mpg.

**16ACE27** · 10-29-2022, 04:22 PM

Quote:

Originally Posted by Travelin' Texans

If you're driving a large motorhome 75 to 90 mph be sure your life insurance is paid up & the kids know where the paperworks at!
I'm sorry but if you're in that big of a hurry you should of left a day earlier or left the MH behind & took a flight.
Driving a MH at those speeds is extremely dangerous for you & everyone else on the highway with you! If me or mine were involved in an accident with a MH doing 90 mph the family of the MH owners best have a damn good lawyer.
Not to mention if yours has the Ford V10 your probably getting 1-2 mpg, if not negative mpg.

Wouldn't "negative mpg" mean that gas is being added to your tank as you drive?

Asking for a friend...................

Jusplainwacky · 10-30-2022, 03:47 AM

I was going 65-70 and I had motorhomes, cars, 18-wheelers passing me. The roads I was on are out in the middle of nowhere and straight as far as the eye can see...the speed limit was 75.

Delco Bobby · 11-02-2022, 06:55 PM

Quote:

Originally Posted by Jusplainwacky

I was going 65-70 and I had motorhomes, cars, 18-wheelers passing me. The roads I was on are out in the middle of nowhere and straight as far as the eye can see...the speed limit was 75.

Maybe your circumstances are different but most of have better control if we slow down in high wind conditions.

You didn’t mention direction but head winds and side winds will limit your top speed. But you probably know that.

happy · 11-02-2022, 07:03 PM

Can you lower your floor so that the pedal can go down further?

paulwadley · 11-02-2022, 08:13 PM

Towing any vehicle in California has a set speed limit of 55 mph per the California Vehicle Code plus there are signs on every California freeway advising that if towing, 55 mph maximum speed.

Paul

Jusplainwacky · 11-02-2022, 09:36 PM

Quote:

Originally Posted by paulwadley

Towing any vehicle in California has a set speed limit of 55 mph per the California Vehicle Code plus there are signs on every California freeway advising that if towing, 55 mph maximum speed.

Paul

REALLY??? I didn't know this!

Glad the states I was in didn't have this rule. 99% of the people towing/trailing don't follow this rule...including truckers.

My post wasn't about getting a course on driver safety or laws in California...thank you.

Muggs · 11-03-2022, 01:44 PM

Hilarious!!!!

I have heard some have speed limiters based on oem tire ratings. Mine being on 2016 e450 chassis will run 85 on flat ground. Have not felt any need to see what upper limit is. Engine not really working hard at that speed.

I have no issue running it up periodically as chassis and driveline designed to operate over a wide variety of loads. Being in Florda in the hottest times it seems prudent to go a little easier due to tire/road heat. I had someone ask why I feel tires/trailer hubs while fueling, explained looking for variation in temps. Any wide variation may be sign of impending failure. Have heat gun I use at times or if something feels unusual.

ProsperTrail · 11-05-2022, 04:52 AM

the important thing is how quick can you STOP!

And how will you explain to survivors in a crash why you couldn't stop in time.

Take extra time when driving a big rig and enjoy the trip!

Jusplainwacky · 11-05-2022, 05:24 AM

Quote:

Originally Posted by ProsperTrail

the important thing is how quick can you STOP!

And how will you explain to survivors in a crash why you couldn't stop in time.

Take extra time when driving a big rig and enjoy the trip!

Perhaps you didn't read...and this goes for others.

This POST wasn't to get lectures from people about driving at safe speeds.

Regardless, driving slow can be dangerous in itself, especially when passing a big rig and trying to get around/away from them as quickly as possible, merging onto a freeway and getting out of the way of an on-coming traffic... especially a big rig. What is important is to leave plenty of space for stopping.

Enough about speed and safety.

Dan-sr@perra-us.net · 11-05-2022, 02:42 PM

The question is are you hitting a speed limiter or a rev limiter? Years ago, I had a similar problem on my 1995 Jeep Grand Cherokee. The problem was caused by the RPM limiter and the transmission. In short, the transmission shift point from second gear was set too high. This was only a problem at full throttle then the RPM limit would kick in and then set up an on / off / on / off cycle. The first time it happened it was absolutely the most terrifying thing that ever happened to me while driving because I was attempting to merge into traffic traveling at 80 mph. The problem was corrected when I got my transmission rebuilt. Your problem might be that the transmission tries to down shift when you push the throttle to the floor but shifting into the lower gear results in the engine RPM going too high and the rev limiter slows the engine down. I would get your transmission checked out.

craigd853 · 11-05-2022, 04:39 PM

Quote:

Originally Posted by Jusplainwacky

While on a trip with high winds, I would be stepping on the pedal to the floor, and I couldn't get my rig to go faster than 70-75....and many times even past 60mph. I was towing a jeep and there were times I wanted to get around a big rig, but couldn't cause I couldn't get the rig to go any faster. I would have thought it would down shift or something.

Hello, the easy answer if you want to go faster but necessarily sure it's safer is to buy and install a 5 star tuner which will allow you to adjust speed limit govonor to where you want it and also will adjust the shift parameters on your transmission. Read up on it if interested and see if there are any restrictions on being sold to you you based on where you live and also to see if this might be a good fit for you. Good luck

ProsperTrail · 11-05-2022, 06:07 PM

Quote:

Originally Posted by Jusplainwacky

Perhaps you didn't read...and this goes for others.

This POST wasn't to get lectures from people about driving at safe speeds.

Regardless, driving slow can be dangerous in itself, especially when passing a big rig and trying to get around/away from them as quickly as possible, merging onto a freeway and getting out of the way of an on-coming traffic... especially a big rig. What is important is to leave plenty of space for stopping.

Enough about speed and safety.

I did read you post, but maybe I didn't make the point I wanted to make.

The question is why do you want to go faster than 70-75 on BIG RIG?

The governor is installed on all this big unit because if you are driving any faster you won't be able to stop within a safe distance as required by the Highway Safety guidelines. So, you become a danger to other people on the road and everyone onboard your own RV.

Yes, there are ways to circumvent this limit. I ask again, why would you?

and as for not even getting 65 on high wind conditions, it's call aerodynamics, and RV don't know how to spell that.

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