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Nitro models pusher Bobcat?

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Old 11-18-2006 | 12:30 AM
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From: paola, MALTA
Default RE: Nitro models pusher Bobcat?

does any one know something about the keecat
thanks
Old 11-18-2006 | 07:14 AM
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Default RE: Nitro models pusher Bobcat?

Nony,
Seeing how the Bobcat fastners are all metric, you may have 35mm blind nuts in your plane.
Try the 35mm before going to standard Dubro hardware.
You may have to re-tap the blind nuts thread before using standard screws.
If you force feed the standard screw, you may risk the chance of locking/loosening/dislodging
the blind nuts in the stab, thereby creating some extra work.
Keith
Old 11-18-2006 | 11:52 AM
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Default RE: Nitro models pusher Bobcat?

no, 3.5 mm are too big. I'd rather replace them with known hardware than guess wrong and have a stab pull out in flight. Thanks for the suggestion, though....
Old 11-18-2006 | 12:20 PM
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Default RE: Nitro models pusher Bobcat?

If you are worried about the stab pulling out, just tack glue it in addition to the screws. Unless you lose a boom screw there really isn't much force trying to pull the booms away from the stab anyway.
Old 11-18-2006 | 01:47 PM
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Default RE: Nitro models pusher Bobcat?

I used epoxy on my stab, as I did not trust the bolts. You can still remove the assembly with the booms attached. Bob
Old 11-18-2006 | 05:01 PM
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Default RE: Nitro models pusher Bobcat?

Funny you should ask. I flew a buddy's KeeCat today. It has a ST 75 for power. Nice roll rate and plenty of power for vertical manuveurs. It is not nearly as fast as my Bobcat, but is a much more relaxing plane to fly. I guess the speed was in the 60-70mph vs BobCat's 90-100 (keeps getting faster as the 55ax breaks in . I think part of it is the wing loading and the other is the tail moment being a little longer. My BobCat weighs in at 6lb 14oz. His KeeCat was 2lb heavier. The prop he is using is a zinger 11x8. He could probably get more speed with a higher prop pitch. He had a little trouble with the nose gear retract not locking down after one of his landings, but otherwise the gear held up well.

Oh ya for what it's worth - I managed accidently to gently touch my BobCat's main gear on the ground during a full speed low (!) pass. The mod's I did to the gear mounting appear to work pretty well.


ORIGINAL: kenazzo2000

does any one know something about the keecat
thanks
Old 11-18-2006 | 05:33 PM
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Default RE: Nitro models pusher Bobcat?

I used epoxy on my stab, as I did not trust the bolts. You can still remove the assembly with the booms attached. Bob
\
no can do...I have a servo lead going through there, the connector is in the fin below the stab. I need to be able to swap servos should the need arise...
Old 11-18-2006 | 09:21 PM
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Default RE: Nitro models pusher Bobcat?

I have a YS 53 four stroke NIB I would like to use on this plane or do you guys think that would be too small. Joe
Old 11-18-2006 | 09:31 PM
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Default RE: Nitro models pusher Bobcat?

The weight looks to be about right (16.3oz) and it's capable of 15k rpm. If you pick the right prop it should be good.

ORIGINAL: JL636

I have a YS 53 four stroke NIB I would like to use on this plane or do you guys think that would be too small. Joe
Old 11-19-2006 | 01:32 PM
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Default RE: Nitro models pusher Bobcat?

Is the Nitroplanes bobcat same as the one sold by Raidentech??
Old 11-19-2006 | 03:13 PM
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Default RE: Nitro models pusher Bobcat?

Yes. They are the same plane. From what I have heard here on RCUniverse Nitroplanes and Raidentech are one in the same company.


ORIGINAL: kmtranmd

Is the Nitroplanes bobcat same as the one sold by Raidentech??
Old 11-21-2006 | 01:59 PM
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Default RE: Nitro models pusher Bobcat?


ORIGINAL: CAPMDON

I noticed on this page NONY also makes mention of rotating the carbs but it will only work if the front hub w/carb is bolted to the crankcase.
All the ducted fan engines have a bolted carb assembly. Simply take out the bolts and rotate the entire assembly tighten it down and your
ready to go.
when you rotate it, from looking at the prop stud from the front, which way do you rotate it? thanks
Old 11-23-2006 | 12:31 AM
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Default RE: Nitro models pusher Bobcat?

The Jan issue of MAN is out and has a review of the BCat 50...I haven't had a chance to read it yet......
Old 11-23-2006 | 12:47 AM
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Default RE: Nitro models pusher Bobcat?

when you rotate it, from looking at the prop stud from the front, which way do you rotate it? thanks
I'm pretty certain it is rotated 90 degrees in the direction of rotation...IE looking at the prop it would go counter clockwise 90 degrees.
Old 11-23-2006 | 09:08 AM
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Default RE: Nitro models pusher Bobcat?

I read the article the other day. Good info if you are going to electrify it.


ORIGINAL: Wayne22

The Jan issue of MAN is out and has a review of the BCat 50...I haven't had a chance to read it yet......
Old 11-23-2006 | 11:08 AM
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Default RE: Nitro models pusher Bobcat?

My Bobcat should be here any day, I'm going to power it with a OS 61 FX. In the MAN article, its says that the CG should be 10.3 " back from the leading edge. I assume that is where the wing joins the fuse and does anybody know what he means by 10.3..... 10 3/16ths.... what? Thanks
Joe
Old 11-23-2006 | 11:35 AM
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Default RE: Nitro models pusher Bobcat?

I have mine at 10" from the leading edge at the root. Flies fine. I am going to move the battery back a little to see if it improves knife edge a hair, but at 10" it seems to be pretty well balanced.


ORIGINAL: JL636

My Bobcat should be here any day, I'm going to power it with a OS 61 FX. In the MAN article, its says that the CG should be 10.3 " back from the leading edge. I assume that is where the wing joins the fuse and does anybody know what he means by 10.3..... 10 3/16ths.... what? Thanks
Joe
Old 11-23-2006 | 02:02 PM
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Default RE: Nitro models pusher Bobcat?

I have 1 coming in a few days i have read the entire forum and read the article in MAN

Im going 2 power it with a OS 46 fx 2 keep it lite

I read were some of u r going without rudder servos GOOD or BAD ??

Also anyone try or think flaperons are a good idea ??

Thx

Jason
Old 11-23-2006 | 02:13 PM
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Default RE: Nitro models pusher Bobcat?

I like having rudder control and find myself using it frequently on most of my planes. You can fly the BobCat without rudder servo's and will save the weight of the 2 additional servo's. I'm just a control freak

You can also shave off the weight of an extra elevator servo if you mount a low profile servo in the stab.


ORIGINAL: dragraces

I have 1 coming in a few days i have read the entire forum and read the article in MAN

Im going 2 power it with a OS 46 fx 2 keep it lite

I read were some of u r going without rudder servos GOOD or BAD ??

Also anyone try or think flaperons are a good idea ??

Thx

Jason
Old 11-23-2006 | 02:26 PM
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Default RE: Nitro models pusher Bobcat?

I saw were a couple people did that i wondered myself the reason for 2 on ele

And whats up with the landing gear turned the other way anybody changing theres ??
Old 11-23-2006 | 02:37 PM
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Default RE: Nitro models pusher Bobcat?

The instructions call for mini servo's for elev and rudder. At speed one of those might not have enough torque to move the surface.

I read the explanation for turning the gear wires sideways in the article and just don't see the logic. As far as others reversing it foward, if you don't have a positive AOA to the wing on the ground the take off run is excessive and the plane jumps into the air. I have my nose gear fully extended and take off's are fine.


ORIGINAL: dragraces

I saw were a couple people did that i wondered myself the reason for 2 on ele

And whats up with the landing gear turned the other way anybody changing theres ??
Old 11-23-2006 | 09:00 PM
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Default RE: Nitro models pusher Bobcat?

Where did you see servo recommendations in the instructions ? I didn't find anything ....
Old 11-23-2006 | 10:38 PM
  #573  
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Default RE: Nitro models pusher Bobcat?

wayne22

I used Hitec HS-225MG for the rudders and dual elevators, HS-425BB on the ailerons.

I fly a futaba 9CA tx and mixed elevator to aux1 and reversed servo direction to make it correct, Set aux1 to vrA to adjust center position matching the elevator
Old 11-24-2006 | 12:04 AM
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Default RE: Nitro models pusher Bobcat?

Thanks, I already have my servos...I was just wondering about "The instructions call for mini servo's for elev and rudder" out of curiosity more than anything else.

I only get 20 minutes a day to work on it, so it is going to be a slow ( but steady) project....mind you, it is severe winter here, so there is not rush to finish it......
Old 11-24-2006 | 03:08 AM
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Default RE: Nitro models pusher Bobcat?

ORIGINAL: Crazy4Flight
I used Hitec HS-225MG for the rudders and dual elevators, HS-425BB on the ailerons.
Ewwww. Cross your fingers and hope to fly.

Do a search on HS225 problems -- you'll find plenty of them.

I bought three of these (HS225MG) servos and they all stripped out real quick. The problem is the tiny nylon gear that is driven by the motor pinion. It's just 0.8mm (30 thousandts of an inch) thick and has teeth so fine you can barely see them. The slightest knock -- or even a puff of breeze :-) is enough to strip that baby.

I did some tests and found that there is *no* difference in geartrain strength between the MG and the nylon-geared version -- because even with the plain (cheaper) nylon gears, that tiny little cog is always the first to go.

In fact, the only thing you get from the meta-geared version is more slop and faster wear.

I certainly would not trust any model to an HS225, least of all a model capable of traveling at speeds that would make it lethal if you accidentally hit someone.

And, just for the record -- I'm a Hitec fan. I've got over 50 Hitec servos from HS81s through to HS5955TGs. Of all those servos the *only* ones that have *ever* failed me were the HS225 -- and the *all* stripped within a flight or two -- even when used on throttle!


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