-
- Item #1207
- PN: 10001294
- In Stock
- Item #1207
The Jeppesen CR Circular Computers offer solid construction and proven performance. Whether you're solving wind triangles, polar grid navigation or pressure pattern flying, CR Computers prove their value and versatility every day. Useful in high and low speed problems. They automatically compensate for temperature rise and compressibility factors. Vinyl carrying case are included with each CR-3. 6" Diameter.
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If you find a better price elsewhere on this product we will Match that price and beat it by 10% of the difference. See Details.
Buy with Confidence!
Purchase today and you can return it in the original condition through Tuesday, July 7, 2026! See our return policy.
- In Stock
- Item #1207
- PN: 10001294
Jeppesen CR-3 Circular Flight Computer Overview:
The Jeppesen CR Circular Computers offer solid construction and proven performance. Whether you're solving wind triangles, polar grid navigation or pressure pattern flying, CR Computers prove their value and versatility every day. Useful in high and low speed problems. They automatically compensate for temperature rise and compressibility factors. Vinyl carrying case are included with each CR-3. 6" Diameter.
22 CUSTOMER REVIEWS
Jeppesen CR-3 Circular Flight Computer
22 Reviews
- Average Customer Review:
-
Top Reviews
Verified Purchase
A fundamental piece of equipment, useful as long as there is air to fly in.
- By Old and not bold pilot from Madison Wi on Monday, June 28, 2021
- Pros: It's compact, versatile, accurate and easy to use
- Review: I used the cr-3 in for 25 years in corporate flying, it's useful for flying a cub too. I retired 13 years ago and still have mine, use it 3-4 times a week. This one is probably 20 years old. Keep it in the case and it will stay clean longer, you can wash it with soap and water, carefully dry between the disks and Turtle wax car wax in between the disks, then carefully buffed will keep the whiz in the wheel. It's nicer to use when it moves easily.
- Verified Purchase
My 2nd CR-3
- By Ferdinand from Irvine CA USA on Thursday, June 4, 2020
- Pros: More compact than E6B classic; computes wind problems much faster than with the E6B; cannot scratch the markings; light and easy to carry.
-
Review:
I was introduced to the CR (circular ruler) computer about 10 years ago by my old instructor - he was carrying a cardboard version in his chest pocket all the time. I got the 4" version, CR-4, and started to use it all the time. (Unfortunately, Jeppesen doesn't produce those anymore.) Because my eye sight is not 20/20 any longer, I was forced to get the larger version, the CR-3.
I used the CR-3 for over 10 years, and I would still used if if not for me sticking my fingers where they were not supposed to be, and cracking the wind disk in a couple of places around the rivet. It is THAT reliable! and it doesn't need batteries, either. ;-)
I still use it, but I got a 2nd one for the time when the wind disk will break completely.
Speaking of ergonomics and work done with it, I find the CR-3 superior to the classic E6B. It does everything the E6B does, and more, in a more compact package that's way easier to carry! And the 4" CR-4 is even easier to carry. I still use it, although I have to squint at the smaller numbers sometimes.
It is easy to work with, and there is the right amount of friction on the rivet, so the disks do not rotate freely, nor they are stuck, thus needing a lot of force to rotate them. The Chinese knockoff I tried, you would need to be a rock climber or doing pushups on you fingers in order to make the wheels rotate. :-D
I have two words of advice to give for those looking at the CR computers:
1. I would advise to stay away from Chinese knock offs. They're poorly made, imprecise, and you feel the wheels scratching against each other, a very annoying feeling. I also find the smoked transparent disk to actually reduce the contrast (thus, readability), rather than improving it. The Jep computer may still be produced in China (what isn't these days?) but there is a definite difference in QA between the actual Jep computer and the Chinese knock off.
2. I would also advise to stay away from the APR clones (the yellow ones). They put the Mach window in a place that literally takes away all the markings between 20 and 25 on the inner disk...you'll have to guess which tick mark you're using. Stupid design!
One little thing that annoys me is the temperature coefficients on the true airspeed hairline: one is for standard temperature at sea level, the other for stratosphere. Aside from the fact that they are so close to one another you won't get much difference in your TAS, the question is... who the heck flies in the stratosphere while using a CR-3? However, the APR clone did it again, not only they had a 0.8 Ct (temperature coefficient), they also have a 0.6 Ct. Huh?
All-in-all, if I would be a student pilot again and had to choose between the E6B classic and the CR-3, I would go with the latter without a second thought.
Verified Purchase
great unit
- By A Customer from Windsor CO USA on Monday, May 16, 2016
- Pros: works as advertized
- Review: If I had seen this prior to purchase, I would have gotten the one smaller in size, but, it's a great unit. Be even better with a good instruction book.
- Verified Purchase
nice design
- By A Customer on Sunday, August 30, 2015
- Pros: well planned design
- Review: I like the design of the Jepp CR-2 that I have, but it is too small to read easily. The CR-3 is large enough that it is much easier to read. This computer has more features than the E-6B, and the circular wind-drift calculator is a nice method that takes less turning and sliding of wheels.
- Verified Purchase
The 'Old School' CR Whiz Wheel tech will never die
- By Old Aeronaut on Monday, December 15, 2014
- Pros: Considers everything regardless of the aircraft type (high performance and low performance aircraft)
- Review: I learned flight planing with the old Jep Avstar electronic E6-B in Embry-Riddle back in the '80's. When I learned to use the CR Wheel, the Avstar was thrown in to the back of the desk draw and never used again. In my opinion - I don't know why the E6-B was never retired when the CR was introduced... It factors in Compressibility and Ram Rise - which other computers don't - electronic or otherwise, and it's more portable. The 'Wind Side' is just plain stupid-easy. It's nothing more than a 360 cross wind correction chart.
Verified Purchase
Out of line
- By Sue from Parafield SA Australia on Monday, October 6, 2014
- Pros:
- Review: The wheel is out of alignment, need I say more
Verified Purchase
Great Idea....hard to read.
- By Charles from Woodbury MN USA on Saturday, June 7, 2014
- Pros:
-
Review:
The CR-3 has all the functionality you need but the Black print and Gray background make the wiz wheel difficult to read in anything but good lighting conditions.
A fundamental piece of equipment, useful as long as there is air to fly in.
- By Old and not bold pilot from Madison Wi on Monday, June 28, 2021
- Pros: It's compact, versatile, accurate and easy to use
- Cons: Don't abuse it by leaving it in the sun.
- Review: I used the cr-3 in for 25 years in corporate flying, it's useful for flying a cub too. I retired 13 years ago and still have mine, use it 3-4 times a week. This one is probably 20 years old. Keep it in the case and it will stay clean longer, you can wash it with soap and water, carefully dry between the disks and Turtle wax car wax in between the disks, then carefully buffed will keep the whiz in the wheel. It's nicer to use when it moves easily.
- Was this review helpful to you? Yes No 3 Other people found this review helpful.
- Verified Purchase
My 2nd CR-3
- By Ferdinand from Irvine CA USA on Thursday, June 4, 2020
- Pros: More compact than E6B classic; computes wind problems much faster than with the E6B; cannot scratch the markings; light and easy to carry.
- Cons: Plastic warps if left in sunshine/inside the car; can scratch the plastic if sand/dust goes between the plastic disks;
- Review:
I was introduced to the CR (circular ruler) computer about 10 years ago by my old instructor - he was carrying a cardboard version in his chest pocket all the time. I got the 4" version, CR-4, and started to use it all the time. (Unfortunately, Jeppesen doesn't produce those anymore.) Because my eye sight is not 20/20 any longer, I was forced to get the larger version, the CR-3.
I used the CR-3 for over 10 years, and I would still used if if not for me sticking my fingers where they were not supposed to be, and cracking the wind disk in a couple of places around the rivet. It is THAT reliable! and it doesn't need batteries, either. ;-)
I still use it, but I got a 2nd one for the time when the wind disk will break completely.
Speaking of ergonomics and work done with it, I find the CR-3 superior to the classic E6B. It does everything the E6B does, and more, in a more compact package that's way easier to carry! And the 4" CR-4 is even easier to carry. I still use it, although I have to squint at the smaller numbers sometimes.
It is easy to work with, and there is the right amount of friction on the rivet, so the disks do not rotate freely, nor they are stuck, thus needing a lot of force to rotate them. The Chinese knockoff I tried, you would need to be a rock climber or doing pushups on you fingers in order to make the wheels rotate. :-D
I have two words of advice to give for those looking at the CR computers:
1. I would advise to stay away from Chinese knock offs. They're poorly made, imprecise, and you feel the wheels scratching against each other, a very annoying feeling. I also find the smoked transparent disk to actually reduce the contrast (thus, readability), rather than improving it. The Jep computer may still be produced in China (what isn't these days?) but there is a definite difference in QA between the actual Jep computer and the Chinese knock off.
2. I would also advise to stay away from the APR clones (the yellow ones). They put the Mach window in a place that literally takes away all the markings between 20 and 25 on the inner disk...you'll have to guess which tick mark you're using. Stupid design!
One little thing that annoys me is the temperature coefficients on the true airspeed hairline: one is for standard temperature at sea level, the other for stratosphere. Aside from the fact that they are so close to one another you won't get much difference in your TAS, the question is... who the heck flies in the stratosphere while using a CR-3? However, the APR clone did it again, not only they had a 0.8 Ct (temperature coefficient), they also have a 0.6 Ct. Huh?
All-in-all, if I would be a student pilot again and had to choose between the E6B classic and the CR-3, I would go with the latter without a second thought. - Was this review helpful to you? Yes No 7 Other people found this review helpful.
- Verified Purchase
great unit
- By A Customer from Windsor CO USA on Monday, May 16, 2016
- Pros: works as advertized
- Cons: a little big
- Review: If I had seen this prior to purchase, I would have gotten the one smaller in size, but, it's a great unit. Be even better with a good instruction book.
- Was this review helpful to you? Yes No 3 Other people found this review helpful.
- Verified Purchase
nice design
- By A Customer on Sunday, August 30, 2015
- Pros: well planned design
- Cons: a little awkward to rotate the wheels
- Review: I like the design of the Jepp CR-2 that I have, but it is too small to read easily. The CR-3 is large enough that it is much easier to read. This computer has more features than the E-6B, and the circular wind-drift calculator is a nice method that takes less turning and sliding of wheels.
- Was this review helpful to you? Yes No 4 Other people found this review helpful.
The 'Old School' CR Whiz Wheel tech will never die
- By Old Aeronaut on Monday, December 15, 2014
- Pros: Considers everything regardless of the aircraft type (high performance and low performance aircraft)
- Cons: Some fine print - but you get used to it...
- Review: I learned flight planing with the old Jep Avstar electronic E6-B in Embry-Riddle back in the '80's. When I learned to use the CR Wheel, the Avstar was thrown in to the back of the desk draw and never used again. In my opinion - I don't know why the E6-B was never retired when the CR was introduced... It factors in Compressibility and Ram Rise - which other computers don't - electronic or otherwise, and it's more portable. The 'Wind Side' is just plain stupid-easy. It's nothing more than a 360 cross wind correction chart.
- Was this review helpful to you? Yes No 4 Other people found this review helpful.
- Verified Purchase
Out of line
- Verified Purchase
Great Idea....hard to read.
- By Charles from Woodbury MN USA on Saturday, June 7, 2014
- Review:
The CR-3 has all the functionality you need but the Black print and Gray background make the wiz wheel difficult to read in anything but good lighting conditions.
- Was this review helpful to you? Yes No 3 Other people found this review helpful.
7 QUESTIONS & ANSWERS
Previously Asked Questions
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Monday, January 5, 2015
Q: Is the CR-3 made of metal or plastic?
A: This is a plastic CR-3.
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Wednesday, May 4, 2011
Q: I have an old CR-1. How does it compare with the current CR's, and where can I find instructions on how to use it? Thank You.
A:
All of the CR computers are basically the same, they are just different sizes and materials (i.e. plastic, metal, etc.). We have the CR Computer Manual/Workbook that will provide instructions.
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Monday, January 24, 2011
Q: Do you have this computer instructions in other languages?
A: We do not, but you might check with Jeppesen Europe. http://www.jeppesen.com/company/office-locator.jsp
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Thursday, November 12, 2009
Q: Do you have a big CR computer for demonstrating in class for students?
A: We do not have any larger instruction-style flight computers.
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Sunday, October 5, 2008
Q: how can i download the cr3 instruction manual to use it.
A: The Jeppesen CR Flight Computer instructions are available for viewing online on Jeppesen's website.
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Wednesday, March 19, 2008
Q: I'd like to know what does CR stand for? Is it an acronym? thanks
A: CR stands for Counter-Rotating.
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Thursday, February 14, 2008
Q: The original computer I was inquiring about is a 4 inch diameter. Do you have a CR style smaller than the CR-3 which I believe is 6 inches. The smaller size fits in my shirt pocket.
A: Jeppesen also makes a CR-5 that has a 3.75" diameter and a CR-2 with a 4.25" diameter.
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Lowest Price Guaranteed!
If you find a better price elsewhere on this product we will match that price and beat it by 10% of the difference.
Buy with Confidence!
Purchase today and you can return it in the original condition through Tuesday, July 7, 2026 ! See our return policy.