CRP 5 wind scale or not?
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Join Date: Apr 2006
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CRP 5 wind scale or not?
About to start reading the Gen Nav stuff and wondered if anyone has a view on whether the wind scale is an advantage or disadvantage for the exams.( as opposed to a pencil line)
I notice both CRP 5 types are for sale.
....the other question I have which relates to the same topic is the best writing media on the wind scale. When I completed the PPL and IMC tests I found a non permanent fine point marker the best but it did stain a little.
cheers
Fastair.
I notice both CRP 5 types are for sale.
....the other question I have which relates to the same topic is the best writing media on the wind scale. When I completed the PPL and IMC tests I found a non permanent fine point marker the best but it did stain a little.
cheers
Fastair.
Hovering AND talking
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I used a CRP-5 with wind arm for the very reason that repeated use with pencil/pen stained. With a wind arm, there is no need for any marks to be made on the computer. Much preferred it.
Cheers
Whirls
Cheers
Whirls
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cheers for the comment ...can I ask a question......
does the wind arm stay in the same place when you "wizz" the thing around ?
sorry to ask what might be obvious but never seen or used one
F
does the wind arm stay in the same place when you "wizz" the thing around ?
sorry to ask what might be obvious but never seen or used one
F
Use a soft pencil. 2B is my preferred hardness with a reasonable balance between softness & durability. Definitely not anything in the H series, not even a HB. A soft pencil will rub off without leaving a mark. If needed wet your thumb/finger with a bit of saliva then rub.
Slight change of topic, but you can save some money & use a Jeppesen CR type whiz wheel. Every bit as accurate as any slide type whiz wheel but more compact and, for some problems at ATPL level, quicker to solve with fewer steps than needed with a CRP5.
Lots of UK instructors don't like the CR based on lack of familiarity but they're not hard to use.
Slight change of topic, but you can save some money & use a Jeppesen CR type whiz wheel. Every bit as accurate as any slide type whiz wheel but more compact and, for some problems at ATPL level, quicker to solve with fewer steps than needed with a CRP5.
Lots of UK instructors don't like the CR based on lack of familiarity but they're not hard to use.
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I would always opt for the CRP-5; it’s effectively stood the test of time. Although, I removed the wind arm as I found it to be an awful nuisance, somewhat arduous indeed, in place opting for a good old fashioned pencil!
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Chinagraphs!
When I first started my Nav exercises in South Africa, my instructor repeated over & over CHINAGRAPHs.
They are awesome pencils use anywhere jot notes on the plastic clip board, window, mark the horizon & of course on the CRP 5
Though recently got a new pooleys CRP5 it does say not to use chinagraphs, Why I dont know..... I find it easy to rub off & no marks.
Anyone else know/experience why?
My thoughts great pencils bit pricey in an art shop, so buy a couple of boxes off ebay. I find the red ones work best.
I know now why my instructor went on & on about them. Just my little input hope it helps.
Goodluck with your exams
They are awesome pencils use anywhere jot notes on the plastic clip board, window, mark the horizon & of course on the CRP 5
Though recently got a new pooleys CRP5 it does say not to use chinagraphs, Why I dont know..... I find it easy to rub off & no marks.
Anyone else know/experience why?
My thoughts great pencils bit pricey in an art shop, so buy a couple of boxes off ebay. I find the red ones work best.
I know now why my instructor went on & on about them. Just my little input hope it helps.
Goodluck with your exams
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With repeated use, chinagrpah pencils will stain the plastic. You must wipe it off immediately otherwise it will stain. Personally, I don't think they're sharp enough; feels like you're writing with a tree stump 
Cheers
Whirls
Cheers
Whirls
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If you have the windarm you stand a better chance in the exams if you arrive at a result half way in between the answers they give. It allows you to massage the wind component and see what effect it would have without you having to rub a pencil mark out and start again. All the tripe about it being less accurate than a big fat pencil mark is rubbish, because you're far more likely to make an error with a pencil than reading from the wind arm.
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Hi,
I dunno about anybody else, but personally I could never get used to using pencils + CRP... I've always found it much easier to use a fine black ink permanent marker, making a single 'dotted point' as opposed to a cross where I want it.
Much easier to see, and if you wet your finger first, it will come off no problems within about five minutes or so of being applied. And honestly, how long are you going to be using it for at once - perhaps for 30 minutes of the navigation exam?
Just my thoughts, and to answer the original question, yes, I would definitely reccommend the CRP-5 with windarm.
I may be ignorant here, but how else would you work out W/V probs? Trigonometry!?! Haha don't be so silly... oh, you're not joking...
Jack
I dunno about anybody else, but personally I could never get used to using pencils + CRP... I've always found it much easier to use a fine black ink permanent marker, making a single 'dotted point' as opposed to a cross where I want it.
Much easier to see, and if you wet your finger first, it will come off no problems within about five minutes or so of being applied. And honestly, how long are you going to be using it for at once - perhaps for 30 minutes of the navigation exam?
Just my thoughts, and to answer the original question, yes, I would definitely reccommend the CRP-5 with windarm.
I may be ignorant here, but how else would you work out W/V probs? Trigonometry!?! Haha don't be so silly... oh, you're not joking...
Jack
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I would definetely go WITH a windarm.... I was a bit sceptical at first, but once you get up to speed on it, I found it much much faster... also a few speed tests in class confirmed it..!
One more recommendation.. after you're done with exams.. buy a strong, American built aluminium E6-B.. after 10 years mine is still as good as new, whereas, after 6 months ( at 3 times the price ) my Cr aP 5 is already showing wear and tear.
One more recommendation.. after you're done with exams.. buy a strong, American built aluminium E6-B.. after 10 years mine is still as good as new, whereas, after 6 months ( at 3 times the price ) my Cr aP 5 is already showing wear and tear.
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What ever you do, do not go for one of the Transair TPS 1/2 computers. They are a pain in the neck due to the fact that the wheel part slide over the "wind lines" part too easliy. It makes it a nighmare to use. Also, don't wind arms make it impossible to do certain things, such as calculating crosswind components?
