1330 Redline

[rcturner]

I have been trying to find out what the real redline on this engine is. The tach suggests that it is 7500 RPMs but, I have not seen anything that actually says that. Also, I have not seen any dyno readouts that include this information. Has anyone found anything that actually documents the redline/fuel cutoff as well as the HP curve?

[Bob Denman]

It it's in gear: 8,100 rpm.
If the engine is spinning freely: 7,500 rpm.

(Per the Owner's Manual:8100 RPM with engaged drivetrain
Engine RPM limiter setting Forward
7500 RPM with open clutch or on neutral)

[Chupaca]

You can test it yourself on the open road.. don't have that engine but if you push hard in the different gears the Rev limiter will kick in and let you know. If your in sixth gear you may need a long clear highway. If you do you can let us know what your top speed was..many want to know...or see above.....

[billybovine]

It it's in gear: 8,100 rpm.
If the engine is spinning freely: 7,500 rpm.

(Per the Owner's Manual:8100 RPM with engaged drivetrain
Engine RPM limiter setting Forward
7500 RPM with open clutch or on neutral)

What's this Bob. Statement that it is in the owner manual in small (micro) print. Are you trying to avoid the nasty PM from somebody that they were insulted by the mention that the info is in the owners manual.

[garb55]

You will never reach the red line in 6th gear
I have a 2014 RTL and my top speed is around 105 mph
I don't know if altitude would have anything effect on top speed
I was at 6000 foot elevation when I did that
5th gear might just go faster
Don

[Bob Denman]

What's this Bob. Statement that it is in the owner manual in small (micro) print. Are you trying to avoid the nasty PM from somebody that they were insulted by the mention that the info is in the owners manual.

I finally had the time to grab a copy of it; that's all!

[rcturner]

It it's in gear: 8,100 rpm.
If the engine is spinning freely: 7,500 rpm.

(Per the Owner's Manual:8100 RPM with engaged drivetrain
Engine RPM limiter setting Forward
7500 RPM with open clutch or on neutral)

I have seen this information. It does answer the question of RPM limiting set by BRP but, I am not sure it really describes the mechanical limits of the motor or what Rotax believes the motor is capable of. Others of their motors have quite a bit of information available about them. Not so much on the 1330.

[Bob Denman]

Hook one up to the dyno, and disconnect all of the electronic limiters...
Let us know, at what point it becomes a grenade!

[ARtraveler]

To technical and fast for me.

[billybovine]

The clutch basket will probably be the limiting factor. The modern 4t engine can spin pretty high. Based on what we turn the MX bike that are similar to on of the 1330 cylinders, I would guess it will stay together over 12.5k rpm maybe more, but I doubt the clutch will.

I highly doubt there is a clutch issue with RPM.

The limiting factor are the hydraulic lifters. Floating valves just don't work well.

[rcturner]

Hook one up to the dyno, and disconnect all of the electronic limiters...
Let us know, at what point it becomes a grenade!

Somehow, I don't think this does anything to address my question. It looks like a comment just to make a comment. I have no interest in doing what your comment is suggesting and have no understanding of why you would make such a strange suggestion. My question is focused on documentation showing the capabilities of the engine. I do believe that the clutch and its associated parts would probably be the limiting factor as was suggested previously.

[jaherbst]

Why in the world would you want to know and "what difference does it make"? Seems like we are looking in the sugar bowl again for mouse droppings.

Jack

[rcturner]

Why in the world would you want to know and "what difference does it make"? Seems like we are looking in the sugar bowl again for mouse droppings.

Jack

Strictly curiosity. In the old days (50s & 60s) a performance engine with this stroke would redline about 8400 RPMs. With todays materials and technology, I would expect it to be somewhat higher. Maybe 10500 to 11500 RPMs with some degree of safety but not necessarily a long life. Plus, it makes me happy.

[Bob Denman]

Somehow, I don't think this does anything to address my question. It looks like a comment just to make a comment. I have no interest in doing what your comment is suggesting and have no understanding of why you would make such a strange suggestion. My question is focused on documentation showing the capabilities of the engine. I do believe that the clutch and its associated parts would probably be the limiting factor as was suggested previously.

Even if THEY have that information tucked away in the "Sanctum Sanctorum"; they'd never let it see the light of day!

lighten up: It's all in fun!

[jaherbst]

Strictly curiosity. In the old days (50s & 60s) a performance engine with this stroke would redline about 8400 RPMs. With todays materials and technology, I would expect it to be somewhat higher. Maybe 10500 to 11500 RPMs with some degree of safety but not necessarily a long life. Plus, it makes me happy.

​Good answer. Thanks, Jack

[BLUEZL600EFI]

Why in the world would you want to know and "what difference does it make"? Seems like we are looking in the sugar bowl again for mouse droppings.

Jack

So you can shift about 25-50 rpms before you hit the rev limiter, once you hit that your power drops instantly. If you shift right before you get maximum power to each ascending gear. It took me a bit to get used to the lower rev limit coming off the 998. After 2500 miles I rarely hit it any more.
I was surprised the triple did not have a higher one considering most 3 and 4 inlines rev to 12,000 or more these days. Plus with the 1330 it just stops going higher, you don't get that timing retard sound you got with the twin, so if you are not aware you can be in pretty good before you realize you're losing speed.

[Bob Denman]

You have to remember that they're tuning this engine for touring; not racing. As such; they're also building it to last for a heckuva long time.
Did you know that Harley's air-cooled "Big twins" usually start to need some freshening up of the top-end, at considerably less than 50,000 miles?

[IGETAROUND]

Plus with the 1330 it just stops going higher, you don't get that timing retard sound you got with the twin, so if you are not aware you can be in pretty good before you realize you're losing speed.

I believe that is considered a "soft" rev limiter. The one on the 998 is more of a hard limiter.

[rcturner]

You have to remember that they're tuning this engine for touring; not racing. As such; they're also building it to last for a heckuva long time.
Did you know that Harley's air-cooled "Big twins" usually start to need some freshening up of the top-end, at considerably less than 50,000 miles?

Yes, I am familiar with many of the mechanical limitations of the Harley engines. However, this is a good example of how techonolgy has helped performance and the life of the product. My 2008 Ultra Classic was an incredably expensive bike to keep on the road but, with the design changes made around that time, it was reliable. In spite of the fact that it never let me down, I never could actually learn to trust it. I am sure that a big part of the problem was that I went from a 2004 1800 Goldwing to this Ultra Classic. When I couldn't stand it any longer, I went back to a Goldwing. New Harleys with the liquid cooling are claimed to be better yet. However, I don't know anybody that has one. As a matter of fact, I only have two friends that have Harleys. On the other hand, I have seven friends right here in our small berg that have Spyders. The rest of my rider friends ride a mixture of Hondas, Victorys, etc. None of these bikes has any real problems that are not owner/rider generated. Technology has definitely improved the breed.

[DrewNJ]

You have to remember that they're tuning this engine for touring; not racing. As such; they're also building it to last for a heckuva long time.
Did you know that Harley's air-cooled "Big twins" usually start to need some freshening up of the top-end, at considerably less than 50,000 miles?

That is SO untrue... There are a ton of very high mileage Harley's out there. MANY MANY more than Spyders. 50k is just breaking in for a big twin.

Most Harley riders are more motor heads and just can't resist going bigger! [emoji6]

Sent from my Nexus 6 using Tapatalk

[Bob Denman]

I'm just repeating what the Sales Manager at O'Toole's Harley-Davidson, in Wurtsboro, NY told me...

[Wildrice]

My 2003 Deuce with Screamin Eagle engine mods went down at 13,900 mi when oil pump gear broke off.

My 2014 Street Glide Special ran well but I got tired of trying to get the pig to back up off of loose dirt/gravel. Kept the 2007 Turbo Busa for occassional Spiritual Enhancement needs.

Darrell

[DrewNJ]

Bob, What were you doing at a Harley dealer?
[emoji19] [emoji23] [emoji23]

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[Bob Denman]

Actually; I really LIKE their bikes!
They look great, they have lots of accessories available, and I was checking out their "Street Series"...
(For Sonny-Boy)

I've also got a lot of riding buddies, who are on Big-Twins!

[budsboy]

YOU KNOW , YOU ARE PROBABLY ONE OF THESE GUYS THAT NEVER GET OVER 65 MPH. YOU ALL WAYS HAVE SOMETHING TO SAY ABOUT PEOPLES QUESTIONS. THEIRS A COUPLE GUYS ON THIS FORUM THAT ALWAYS HAVE SOMETHING NEGATIVE TO SAY ABOUT SOMEONE QUESTION. JUST KEEP SITTING IN THAT CHAIR