Capiche 50
#1955
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From: CamborneCornwall, UNITED KINGDOM
4 bang pop wobble cough pop bang bang stroke 
good to keep those vibrations at bay
was hoping Weston would have the weights of their mounts online.
any idea Simon?

good to keep those vibrations at bay
was hoping Weston would have the weights of their mounts online.
any idea Simon?
#1956
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From: o, UNITED KINGDOM
At 63 size IMhumbleO probably not but a simple iso rubber seperation would be good.
On the big babies ie 120 140 motors. Yes cos when they get hard they get very very hard. Bit like our Rugby team
On the big babies ie 120 140 motors. Yes cos when they get hard they get very very hard. Bit like our Rugby team
#1958
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From: .,
OS 10 !? umm
Agree with Baron... you can hard mount the 63, but its better with a simple system of soft mounting at least.
I would never hardmount the 91 upwards... too much abuse on the airframe and servos.... not worth the risk..
Agree with Baron... you can hard mount the 63, but its better with a simple system of soft mounting at least.
I would never hardmount the 91 upwards... too much abuse on the airframe and servos.... not worth the risk..
#1960
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From: CamborneCornwall, UNITED KINGDOM
i had some trouble today 
the first cowl i did was perfect, everything worked great first time.
first problem this time was my engine lining up meathod didn't really work whith more gap behind the engine than i would like after i cut it out, putting the cowl on after each trim just showed i had to cut more and more. Once lined up i looked at getting the cowl central on the spinner back, but looking at the fuz the cowl was facing up way to much.
looking back at the engine it seamed to have upthrust, i loosened the bolts, gave it all the down i could and lined it up again, not much better.
F1 and 2 are lined up ok on the fuz, the mount hasn't changed from the first time, so i dunno where things are going wrong. Really dont want to have to cut more cowl later or it'll just look like a Mark 'AAAA' lash up
lined up some rulers, the big one follows the top of the CNC fuz sides, the smaller one shows the engine thrust line...
Whata you think?

the first cowl i did was perfect, everything worked great first time.
first problem this time was my engine lining up meathod didn't really work whith more gap behind the engine than i would like after i cut it out, putting the cowl on after each trim just showed i had to cut more and more. Once lined up i looked at getting the cowl central on the spinner back, but looking at the fuz the cowl was facing up way to much.
looking back at the engine it seamed to have upthrust, i loosened the bolts, gave it all the down i could and lined it up again, not much better.
F1 and 2 are lined up ok on the fuz, the mount hasn't changed from the first time, so i dunno where things are going wrong. Really dont want to have to cut more cowl later or it'll just look like a Mark 'AAAA' lash up

lined up some rulers, the big one follows the top of the CNC fuz sides, the smaller one shows the engine thrust line...
Whata you think?
#1961
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From: o, UNITED KINGDOM
The cnc is bomb proof the firewall is set at zero!! So put the firewall on you mat square for a start?? Why are you having trouble fitting a cowl????

Phil take a pill
Then go try again


Phil take a pill

Then go try again
#1965
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From: CamborneCornwall, UNITED KINGDOM
the firewall is lined up with one line on the mat, the ruler with the top of the CNC fuz, and the top of the ruler is lined up nicely with the mat too. so the firewall is correct.
the black line is the cowl position and appears to lean back.
on the last i had no upthrust, maybe even some down. but this time it all just looks wrong, the cowl front doesn't match the side thrust angle of the spinner and if i make it match then it's off center from the spinner. the mount is bang on center with the line up hole.
first time i ever did a cowl and it was perfect, this time round when i'm supposed to know what i'm doing it's a right lash up.
very much like this reply which i lost thanks to this F-ing spell check that you have to copy and paste.
I've heard of up thrust for 3D before, so i might just go with what i've got. Just weird that before it was ok, this time with the engine sat square in the mount it's totally wrong, these pics are with the engine twisted down and i still have up thrust. maybe the mount was bent in the crash?
the black line is the cowl position and appears to lean back.
on the last i had no upthrust, maybe even some down. but this time it all just looks wrong, the cowl front doesn't match the side thrust angle of the spinner and if i make it match then it's off center from the spinner. the mount is bang on center with the line up hole.
first time i ever did a cowl and it was perfect, this time round when i'm supposed to know what i'm doing it's a right lash up.
very much like this reply which i lost thanks to this F-ing spell check that you have to copy and paste.
I've heard of up thrust for 3D before, so i might just go with what i've got. Just weird that before it was ok, this time with the engine sat square in the mount it's totally wrong, these pics are with the engine twisted down and i still have up thrust. maybe the mount was bent in the crash?
#1966
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From: Bristol, UNITED KINGDOM
Phil,
if I am teaching you to suck eggs here, then sorry just ignore my ramblings....
to measure your upthrust accurately on the c50,
stick a prop on the engine, (bigger the better) and have it vertical (inline with the fin and rudder)
measure from prop tips to the back of the fuse at the top of the flat sidesjust in front of the rudder (ie a point on a horizontal line that should pass through the center of the prop)
divide the difference of the two measurements by the length of the prop
take the inverse tangent of the above
Can also be used to measure side thrust, just put the prop horizontal and measure to a point on the fin.
if I am teaching you to suck eggs here, then sorry just ignore my ramblings....
to measure your upthrust accurately on the c50,
stick a prop on the engine, (bigger the better) and have it vertical (inline with the fin and rudder)
measure from prop tips to the back of the fuse at the top of the flat sidesjust in front of the rudder (ie a point on a horizontal line that should pass through the center of the prop)
divide the difference of the two measurements by the length of the prop
take the inverse tangent of the above
Can also be used to measure side thrust, just put the prop horizontal and measure to a point on the fin.
#1967
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From: .,
Phil, I think you are making a bit of a meal of this... if you are unsure just go fly it and see how it is.
No good - add a washer here and there.
When its fine... stick the cowl on.
BOSH DONE !
No good - add a washer here and there.
When its fine... stick the cowl on.
BOSH DONE !
#1968
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From: CamborneCornwall, UNITED KINGDOM
i am making a meal of it for sure. i'm also parronied that anytime you have to do something again you muck it up and the first was better. after doing all these hand written job applications and screwing up at the last hurdle i know for sure the first is the best.
think first stop is to remove the mount and check thats square on the bench with the engine fitted square on the arms using Ultimates meathod.
Might leave the cowl off, but i know from before it changes the way it flys, and i learnt now not to fly a plane thats not finished, it'll commit scuicide as soon as it is, and it looks like a lot of Capiches have death wishes
think first stop is to remove the mount and check thats square on the bench with the engine fitted square on the arms using Ultimates meathod.
Might leave the cowl off, but i know from before it changes the way it flys, and i learnt now not to fly a plane thats not finished, it'll commit scuicide as soon as it is, and it looks like a lot of Capiches have death wishes
#1969
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From: Surrey, UNITED KINGDOM
i guessing the answer is yes, but does the Saito 72 need soft mounting?
ive never used soft mounts before and have heard lots of arguments about them. Guy from Just Engines said if you can avoid it, dont use them.
ive never used soft mounts before and have heard lots of arguments about them. Guy from Just Engines said if you can avoid it, dont use them.
#1970
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From: London, UNITED KINGDOM
No I dont use soft mounts on my Saito. Not needed for noise, and just adds weight and complexity.
For bigger engines (YS 110 and up) then they are needed (for us anyway) to help keep the noise down.
For bigger engines (YS 110 and up) then they are needed (for us anyway) to help keep the noise down.
#1971
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From: london, UNITED KINGDOM
Just to back up what sprink says, My Saito 72 runs fine without the soft mount, and it doesn't shake the plane at all. It is also the quitest engine i have even with the tiny standard silencer.
#1972
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From: .,
First of all no engine NEEDS to be soft mounted.... they all run fine hard mounted.
The issues are that of vibration which is a variable depending on what motor you are talking about and what type of airframe.
The smaller engines / plane suffer less.
Noise is a important factor yes............ but thats not all...
Aside from the airframe vibration you FEEL, there is vibration you dont feel.
Aside from Noise there is the matter of preservation of the airframe and more importantly (and often forgotton) the radio - particularly the servos... the poor dears are attached to two surfaces, one moves around alot and everythings happeneing, Im cold ... boo hoo I want to go home..... zzzzzip.. the gears go (Hitec only ! tee hee)
Arguably on a model like the C50 and similar sized models there is a limited gain given the avergae lifespan of the model and gear used. But lightweight soft mounting is possible without weight or wallet penalties. (thats what Im working on at the mo for IH)
Take the 2M models.... Forget noise... hard mount a YS140 (for example) as pure a beast as it is thats a lot of direct vibration throuogh the airframe and quite honestly is just RUDE !
Taken to this extreme your servos would probably be goosed in a very short time ! (goosed does not necessarily mean non operational... they might just adopt the precision and accuracy and sloppy centres of a Hitec !).
Sorry... Im being anti Hitec..
SLAP [X(]
You get my point... I hope..
PS - Hoping to Test the Fun Fly Wing this weekend
The issues are that of vibration which is a variable depending on what motor you are talking about and what type of airframe.
The smaller engines / plane suffer less.
Noise is a important factor yes............ but thats not all...
Aside from the airframe vibration you FEEL, there is vibration you dont feel.
Aside from Noise there is the matter of preservation of the airframe and more importantly (and often forgotton) the radio - particularly the servos... the poor dears are attached to two surfaces, one moves around alot and everythings happeneing, Im cold ... boo hoo I want to go home..... zzzzzip.. the gears go (Hitec only ! tee hee)
Arguably on a model like the C50 and similar sized models there is a limited gain given the avergae lifespan of the model and gear used. But lightweight soft mounting is possible without weight or wallet penalties. (thats what Im working on at the mo for IH)
Take the 2M models.... Forget noise... hard mount a YS140 (for example) as pure a beast as it is thats a lot of direct vibration throuogh the airframe and quite honestly is just RUDE !
Taken to this extreme your servos would probably be goosed in a very short time ! (goosed does not necessarily mean non operational... they might just adopt the precision and accuracy and sloppy centres of a Hitec !).
Sorry... Im being anti Hitec..
SLAP [X(]
You get my point... I hope..
PS - Hoping to Test the Fun Fly Wing this weekend
#1973
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The Capiche 50 has been transformed into the Capiche 50 Fun....
The wing is finished.... Flight Test will take place as soon as it stops bloody raining !
A small selection of pics...
The wing is finished.... Flight Test will take place as soon as it stops bloody raining !
A small selection of pics...
#1974
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From: blender land, UNITED KINGDOM
tell me about the rain,i went to the west essex club today with me c50 but it was drizzle all day.that new wing looks good pete,does it weigh more or less than standard wing?[8D]
#1975
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From: CamborneCornwall, UNITED KINGDOM
mine was just 6oz heavier, but alot of that was the lead ailerons which had very very orange wood.
Arch, that looks great! it's weird how that massive wing doesn't really hurt the Capiches looks. Maybe we're just used to big wings on ugly planes, so a big wing on a Capiche.....
Arch, that looks great! it's weird how that massive wing doesn't really hurt the Capiches looks. Maybe we're just used to big wings on ugly planes, so a big wing on a Capiche.....


