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Type: Posts; User: jrf

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  1. Replies
    2,899
    Views
    193,515

    It is called a tuned pipe because it is tuned to...

    It is called a tuned pipe because it is tuned to a certain rpm range. Most pipes are tuned to high rpm. That means that the engine will run better (faster) at that rpm. It also means that the...
  2. Thread: 3 3/4" standoffs?

    by jrf
    Replies
    11
    Views
    360

    MTK: What do you use to soft mount your...

    MTK:

    What do you use to soft mount your engines?

    Jim
  3. Thread: 3 3/4" standoffs?

    by jrf
    Replies
    11
    Views
    360

    Thanks Dennis. That is the most precise way to...

    Thanks Dennis. That is the most precise way to do it that I have seen. Unfortunately the Top Flight Giant Scale p-51 cowl is built around the engine after it is mounted. I am going to have to...
  4. Thread: 3 3/4" standoffs?

    by jrf
    Replies
    11
    Views
    360

    Thanks for the input guys. I seems like we are...

    Thanks for the input guys. I seems like we are all in agreement that the extended standoffs are a bad idea. I will either use hardwood spacers or build an engine box.

    Jim
  5. Thread: 3 3/4" standoffs?

    by jrf
    Replies
    11
    Views
    360

    3 3/4" standoffs?

    I'm new to gas engines. Am building a P-51 giant scale with a DLE 55RA. In order to get the prop to firewall distance correct, I will have to use 3 3/4" standoffs. That is the 2 3/4" standoff that...
  6. Replies
    39
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    698

    The chargers that came with most radios charge at...

    The chargers that came with most radios charge at 50 mAh. At that rate it will take 40 hours to charge a 2000 mAh battery. You should have at least a volt meter to check the charge on the battery. ...
  7. Replies
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    698

    A 4.8 v 2000 mAh battery is what you will need...

    A 4.8 v 2000 mAh battery is what you will need for the airplane as well. One of those in the transmitter and one in the airplane will let you fly for 2 or 3 hours. (12 to 18 ten minute flights.) ...
  8. Replies
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    698

    As far as batteries go, Nickel Metal Hydride is...

    As far as batteries go, Nickel Metal Hydride is the best for an airplane the size of the Eagle. They are cheap, easy to care for, use cheap chargers and they never catch fire and burn your house...
  9. Replies
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    698

    Y3: The Sullivan tail wheel bracket won't work...

    Y3: The Sullivan tail wheel bracket won't work on the Eagle because the rudder does not go to the bottom of the airplane. You will need this one...
  10. Replies
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    698

    Another caution if you replace the wire gear with...

    Another caution if you replace the wire gear with aluminum. The wire gear is designed to flex and bend in a mishap. Aluminum gear will transfer the forces to the mounts in the fuselage and is much...
  11. Replies
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    698

    The 61 would be my choice. It should give...

    The 61 would be my choice. It should give performance roughly equivalent to the 46 2 stroke and be lighter and less expensive than the 70. Remember, you still have to buy the servos, switch,...
  12. Replies
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    698

    BTW, adding reinforcements to the airplane will...

    BTW, adding reinforcements to the airplane will make it heavier and that means it will have to fly faster, and land faster. The Eagle 2 can handle a fair amount of weight, but be careful. Your...
  13. Replies
    39
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    698

    The 46 two stroke makes a lot more power than the...

    The 46 two stroke makes a lot more power than the 52 four stroke. The 52 will fly the plane, but the 46 will give you the reserve power to get out of the bad situations that you WILL get into. Just...
  14. Replies
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    698

    Y3: Please see my edit to my post #7 regarding...

    Y3: Please see my edit to my post #7 regarding used engines vs Magnum/ASP.
  15. Replies
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    698

    Y3: I just looked at the Tactic 850 on the...

    Y3: I just looked at the Tactic 850 on the website. The free receiver is a limited time offer. The detailed describtion page is what you would get if there were no sale. Just use the product...
  16. Replies
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    698

    Avoid the LA engine. They were OS's attempt to...

    Avoid the LA engine. They were OS's attempt to compete with China on price, and they are no where near as smooth running, reliable or easy to tune as the FX engines. Used engines, though, usually...
  17. Thread: Opinions

    by jrf
    Replies
    24
    Views
    981

    If you include the muffler, four stroke engines...

    If you include the muffler, four stroke engines are generally lighter than the equivalent two stroke engine.

    Given the same percent of nitro in the fuel and using the most appropriate size prop on...
  18. Replies
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    2,995

    Minimizing your exposure is the best way to...

    Minimizing your exposure is the best way to minimize your risk. Your info can not be stolen from a database you are not in. I'm not going to list all the ways that an ID thief can use your info,...
  19. Replies
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    ***

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  20. Replies
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    A database with the need to handle hundreds of...

    A database with the need to handle hundreds of thousands of transactions, created in less than a month? Do you have any clue what it takes to build that system? They will be lucky if it functions...
  21. Replies
    95
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    2,995

    Registering with the FAA puts your credit card...

    Registering with the FAA puts your credit card info in a totally insecure data base. Using your AMA number to register, if it is allowed, will not expose you to that risk. I will wait.
  22. Replies
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    299

    The Super Tiger carb has a rotatable spray bar...

    The Super Tiger carb has a rotatable spray bar that is used as part of the tuning. Could it have moved?

    The Super Tiger 91 carb also has a larger venturi than the OS and could be starving the...
  23. Thread: Spectrum

    by jrf
    Replies
    258
    Views
    13,388

    I'm sorry, I just can't resist. 1. True, but...

    I'm sorry, I just can't resist.

    1. True, but since most flyers are on 2.4 now, it has become virtually a non-issue for 72.
    2. And yet we are losing airplanes every day to brown-outs, lockouts...
  24. Thread: Spectrum

    by jrf
    Replies
    258
    Views
    13,388

    And don't forget, the 2,4 systems are a lot...

    And don't forget, the 2,4 systems are a lot cheaper to manufacture. The necessary chips are produced in the billions and cost almost nothing to buy. Thus the manufacturing profit is higher, giving...
  25. Thread: Spectrum

    by jrf
    Replies
    258
    Views
    13,388

    I'm not trying to start an argument, nor am I...

    I'm not trying to start an argument, nor am I recommending that everyone go out and buy 72 MHz radios. I do not fly 3D or use 400 ounce servos. And all of my airplanes are 1/4 scale or under. That...
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