Cashmoor warbird fleet size increase

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19 Jan 2019 22:42 #18739 by kevinross
Replied by kevinross on topic Cashmoor warbird fleet size increase

Dave Rogers wrote: Kevin

Grate looking plain!

Can’t weight to sea it in the air. I guess your weighting for the wheather to get good?


Before i fly it - just some wind and straight down the strip.
Although it seems well built, i still need to check all the "hidden" controls etc.

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20 Jan 2019 08:34 #18741 by JRI
Replied by JRI on topic Cashmoor warbird fleet size increase
More info please Kevin, what scale is it, where is the exhaust, are the retracts pneumatic or electric?
I reckon we are building up to a good warbird event soon - Typhoon is a good addition to the fleet.
YT International (aka ESM) models look really good, apparently fly well too but boy are they heavy!

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20 Jan 2019 10:00 #18742 by kevinross
Replied by kevinross on topic Cashmoor warbird fleet size increase
hi JRI
its 73" span - I dare not calculate the wing loading ! - A saving grace may be that the root cord depth is 3" so it should generate good lift
Pneumatic retracts by YT Stock exhaust with silicone extensions to exit the cowl below
Think my first task is to rework the nose weight as per your MIG and hopefully reduce AUW
Q1 On your DLE 35 What- prop for pre & post running in.
Q2 what exhaust are you using.

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20 Jan 2019 19:27 #18747 by JRI
Replied by JRI on topic Cashmoor warbird fleet size increase
Hi Kevin, my MiG.3 is running a 3W 55with a Krumscheid tuned pipe, The Sbach has an OS33 GT with standard pipe amd an 18x10 APC

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25 Jan 2019 20:16 #18808 by kevinross
Replied by kevinross on topic Cashmoor warbird fleet size increase
Ive already said this model is heavy so In order to reduce the total I've optimised ballast by configuring it in a MS / PB / MS "bagel" on outriggers from the engine mounts. Just need some longer HT bolts to bring the bagel directly behind the cowl.

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25 Jan 2019 22:15 #18809 by JRI
Replied by JRI on topic Cashmoor warbird fleet size increase
May the lead compress if you clamp the bagel with the engine mount bolts?

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25 Jan 2019 23:16 #18810 by 4Pedalsfly
Replied by 4Pedalsfly on topic Cashmoor warbird fleet size increase
Kevin - Interesting solution but would it not be simpler to epoxy a cast lead billet into the front of the cowl ?
What size & length of socket screws do you need - I'll have a look in my stock, worked for many years in
the fastener industry. ?

Colin.

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26 Jan 2019 08:59 #18811 by kevinross
Replied by kevinross on topic Cashmoor warbird fleet size increase
Thought about compressing the lead and will post the solution

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26 Jan 2019 09:01 #18812 by kevinross
Replied by kevinross on topic Cashmoor warbird fleet size increase

4Pedalsfly wrote: Kevin - Interesting solution but would it not be simpler to epoxy a cast lead billet into the front of the cowl ?
What size & length of socket screws do you need - I'll have a look in my stock, worked for many years in
the fastener industry. ?

Colin.

As my fastener supplier is closed until Monday - do you have any threaded to head m5 HT machine screws x 100mm long or just m5 HT studding ?

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26 Jan 2019 09:51 #18813 by Phil Ford
Replied by Phil Ford on topic Cashmoor warbird fleet size increase
My $0.02. I wouldn't put any weight on the cowl. The extra weight would really pull on the securing screws and tear the fibreglass.

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