RPM for 2019 (and Max Speeds in a Given Gear)

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RC20
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RPM for 2019 (and Max Speeds in a Given Gear)

Post by RC20 » Tue Jul 16, 2019 11:54 pm

I have been going over this and scratching my head trying to sort it out.

The Emissions sticker says Max 6200 rpm (cT 2019) I tam taking that as redline. Was the old Redline lower?

Book says 5500 rpm Max. Yellow? Dated?

I think I got the rev limiter kicked in but as no tach (yet) no idea what that was. Anyone?

I do have the chart that was made using 5500 as the top.

Heidel had one up to 83 mph, that would seem to indicated (from the chart) that they were close to 6200.
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Re: RPM for 2019 (and Max Speeds in a Given Gear)

Post by Msblu79 » Wed Jul 17, 2019 7:14 am

I missed a shift years ago trying to hurry up and I saw 7,000rpm on the tach. So far, many klicks later, it appears it didn't hurt it to much so there is a bit of a safety margin. I don't think it would be wise to sustain continuous running above 5500rpm but maybe the 2019's can handle it. :)
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Re: RPM for 2019 (and Max Speeds in a Given Gear)

Post by Lokiboy » Wed Jul 17, 2019 9:52 am

Msblu79 wrote:
Wed Jul 17, 2019 7:14 am
I missed a shift years ago trying to hurry up and I saw 7,000rpm on the tach. So far, many klicks later, it appears it didn't hurt it to much so there is a bit of a safety margin. I don't think it would be wise to sustain continuous running above 5500rpm but maybe the 2019's can handle it. :)
With improvements to FD metallurgy and cylinders, improved crankshaft (D-10) quite possibly. Time will tell.

Often see posts where folks go up to 65mph + and report no problems. One can have a failing component, but if only riding 500 miles a year it may never become apparent. It’s when stress is induced over long stretches and multiple times along with constant riding that problems are more likely to surface.

It will be interesting if HQ ever recalculates the RPM limits. Until then, if I owned a 2019, I’d stick with the 5600 RPM. I’m riding a Ural, where am I in a hurry to go?
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Re: RPM for 2019 (and Max Speeds in a Given Gear)

Post by Mr Wazzock » Wed Jul 17, 2019 6:10 pm

As far as I know the major difference is the new EFI system, everything else is pretty much as is, unless metallurgy has kept pace. Personally I don't feel comfortable exceeding about 4,500 rpm which is probably around 65 mph for a CT (smaller wheels), but then mine's a 2016.
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Re: RPM for 2019 (and Max Speeds in a Given Gear)

Post by Pterodactyl » Wed Jul 17, 2019 6:37 pm

My tach says the max RPM the engine has achieved is over 11,000.... Hey, it is on my dash so it must be true.
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Re: RPM for 2019 (and Max Speeds in a Given Gear)

Post by Lofty » Wed Jul 17, 2019 6:45 pm

I should get on the stick and do the wiring job necessary to enable the tachometer function on my GU.

Just today, and for the first time, I got to 50 mph in 3rd gear. Too high! I was daydreaming a bit (not good), and my subconscious must have been enjoying the acceleration. I happened to look at the Acewell and the needle was at high noon. Oops.

I've been very careful to shift into 4th no later than 45 mph. By "no later", I mean that I time my shifts so that there's very little likelihood of lugging the engine before or after each gear change. I learned mechanical sympathy from my father, and I've been pretty good about treating my stuff well. To be honest, though, there are days when I still miss the effortless acceleration of the Jap rockets that preceded my acquisition of the Ural. There are trade-offs with everything, though; the thumbs-up from other motorists continues unabated whilst I'm piloting the Russian rig. :thumbsup:
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Re: RPM for 2019 (and Max Speeds in a Given Gear)

Post by atlasheating » Wed Jul 17, 2019 8:26 pm

According to what I have 50 mph in 3rd gear is 4650rpm. Which is under the 5400RPM Redline. I have gone up to 50 in 3rd gear when I am getting up to speed. Or downshifting going up a pass, Starting at the bottom going 60 and then slowing to 50 and downshift and make it to the top.

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Re: RPM for 2019 (and Max Speeds in a Given Gear)

Post by Manscout » Thu Jul 18, 2019 11:16 am

Lofty wrote:
Wed Jul 17, 2019 6:45 pm
Just today, and for the first time, I got to 50 mph in 3rd gear. Too high!
Naaa. 57 Is really the "too high" mark on a Gear up. You can ride 55mph in 3rd a long time without any issues. Had to do it in headwinds for over an hour. However, it is you rig, so do not feel I am telling you that you are doing it wrong. :wink:
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Re: RPM for 2019 (and Max Speeds in a Given Gear)

Post by Msblu79 » Thu Jul 18, 2019 11:35 am

I run mine hard I guess. I cruise at 60mph which is about 4400rpm and do it for 40 miles to work and back. Doesn't seem to bother it to much, never runs hot or acts up. :moto:
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Re: RPM for 2019 (and Max Speeds in a Given Gear)

Post by solo1966 » Thu Jul 18, 2019 9:17 pm

I cruise 58 to 65 on highway all the time. On interstate 65 to 75 25 miles at a time. 2017 Gear Up had 300 miles on it when bought, 20000 miles not kilometers, miles on it now. No problem s just change fluids and adjust valves, grease u joints.
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Re: RPM for 2019 (and Max Speeds in a Given Gear)

Post by RC20 » Thu Jul 18, 2019 9:50 pm

Internet went down and just got my link back up (I hate tech sometimes)

Any 2019 Owner might want to look at the Emission sticker on the left frame area. Mine says 6200 rpm

As noted by Manscout, I had it up in 55 mph range in the hills and really heavy headwinds. I suspect I was pushing 6200 but?????

There seems to be a lot of possible variation. Anyone with a 2019 cT that has the Tach hooked up? As the GU has larger tires a GU data is off.

I may have to hook up the tac just to get the data.

Personally I see no reason not to run 70 if you want on a 2019 unless its really hot (then I would take a break per suggestion every two hours but I usually do anyway)

2019 has the larger head and more sump.
Formerly Owned: ( various rides on others)
Honda 90
2 x CB750K (one a true Japan Model flown to Hawaii by a P3 Orion Sub Patrol Aircraft!)
1 x CB700 SC (RC20 is the actual in house production Model)
1 x R80GS (ok to start with, learned to love it for what it was)
1 x CB450K
1 x 2019 cT Terracotta

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Re: RPM for 2019 (and Max Speeds in a Given Gear)

Post by atlasheating » Fri Jul 19, 2019 8:47 am

Windmill and I were on a ride going about 60 to 62 mph. His tach was reading 4,200 rpm. He has the Retro with the 18" wheels. So my Patrol (with 19" wheels) was turning 4,000 RPM.
5% lower due to wheel size.

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Re: RPM for 2019 (and Max Speeds in a Given Gear)

Post by windmill » Fri Jul 19, 2019 10:26 am

RC20 wrote:
Thu Jul 18, 2019 9:50 pm
2019 has the larger head and more sump.
Those changes are to reduce exhaust and noise emissions. and reduce oil thermal breakdown. The new EFI system is more responsive to the engines needs and allow it to produce more power, more power = more heat.

As such, the 2019's should be more reliable, and durable at sustained higher speeds when kept within their limitations that are still determined by piston velocity and valve train.

I'm comfortable running my 2018 M70 at 65 mph as long as its able to do so, and will run it at a sustained 70 mph when conditions are ideal. If I had a 2019, I wouldn't push it any harder than that.
Barry

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Re: RPM for 2019 (and Max Speeds in a Given Gear)

Post by sKiZo » Fri Jul 19, 2019 2:03 pm

I'm assUming the valves would "float" and give you plenty of warning that you've exceeded safe levels?

** I upped the rev limit on my Royal Star by changing out to double springs on the intake valves. Stock was 5800, new limit was around 6200. Doesn't sound like much, but it really showed up on 0-60 ...
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Re: RPM for 2019 (and Max Speeds in a Given Gear)

Post by BigJames » Fri Jul 19, 2019 4:36 pm

all I'll say on the what speed to ride a new one is, these ain't your old Ural. Mine goes like stink, for a Ural. Routinely pass folks going uphill with a head wind. Have not been in the way on her yet. Kinda of miss that... My Retro now feels quaint. Have 3K on my '19, if it makes it to 7K without blowing up will count it a success. Both my Retro (2 rebuilds in the 1st 10K) and M70 (new engine, then original rebuilt/installed) had multiple engine replacements in 1st 10K...not riding this one much different, so we'll see...hoping worst warranty claim is the seat (that I truly hate) coming un-sewed and speedo freaking out... 6200 RPM is what I've read/heard elsewhere is the mechanical redline (kinda like an Evo HD is 6500, as in don't even try it), that is different from the redline you really want to adhere to if you want it to run a long time. Saying that mine is quite happy in the 65 to 70 MPH range, sounding eerily like a BMW airhead...over that, not so much and IMHO too fast for it anyway.
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