Topic: Jerry Bates Bearcat

Would any one have, per chance, the recommended CofG position and control throws for the Jerry Bates 80" Bearcat.

Many thanks in advance.

Charlie C

Are now I know where the Bearcat comes from.
Believe it or not Charlie, I think you have an ex Colt member Bearcat.

Regards Phil G.

Are now I know where the Bearcat comes from.
Believe it or not Charlie, I think you have an ex Colt member Bearcat.

Regards Phil G.

I know 

I don't know who's it was though. Do I know him.

I wasn't going to tell you, and just turn up at Tibenham with it, however, I need the information so you were bound to find out.

Charlie C

HI Charlie,
                 scalefan on this forum is building one at the mo. PM him , he should be able to help.

             Keith

HI Charlie,
                 scalefan on this forum is building one at the mo. PM him , he should be able to help.

             Keith

 

Will do Keith.

Cheers

Charlie C

I know 


I wasn't going to tell you, and just turn up at Tibenham with it, however, I need the information so you were bound to find out.

Charlie C

You sly old dog. 

Regards Phil G.

Errrm, where's the piccys Mr C 

Mud 

Here ya go Muddy Flappers,





Just got a few bits to do, istall my receiver, decide what to do with the JR591's in the wing, then go fly 

Charlie C

I'm coming over on Sunday to get piccies of Stuey's latest.....will I need to bring my hard hat for your test flight too........

I'm coming over on Sunday to get piccies of Stuey's latest.....will I need to bring my hard hat for your test flight too........

What exactly are you trying to say Mr M. 

Sorry fella, not around this weekend, I would have liked you to get a listen to the engine as well.

Another day 

CC

Noice Mr C, but do give that prop a lick of satin black 

Muds 

Noice Mr C, but do give that prop a lick of satin black 

Muds 

T'will be dun sir 

CC

T'will be dun sir 

CC

When's the Maiden?

When's the Maiden?

When I can get a few issues sorted.

CC

When I can get a few issues sorted.

CC

sunday week then?

sunday week then?

The only way it can happen Sunday week is if I nick all the radio gear out of the Mustang. No chance of that.

Buuuuuut, it may happen one evening the following week being as we are allowed to fly past 7pm now   

CC

Charlie

Measured off the plan, CG is 7" back from the rear face of F-1

Jerry doesn't state any control throws on the plan.....so just work on the 'that looks right' principle.

As much as you can get on rudder. Don't go mad on elevator as it's very close coupled so the elevator will be very powerful. As much as you can get on flaps (within reason) and around 1" up & down on ailerons should be a safe starting point.

Phil

Charlie

Measured off the plan, CG is 7" back from the rear face of F-1

Jerry doesn't state any control throws on the plan.....so just work on the 'that looks right' principle.

As much as you can get on rudder. Don't go mad on elevator as it's very close coupled so the elevator will be very powerful. As much as you can get on flaps (within reason) and around 1" up & down on ailerons should be a safe starting point.

Phil

 

Thanks Phil, Much appreciated.

I am guessing that the elevator throw wont be much different to the Mustang and thats minimal, and I'll use 1" on the ailerons as you suggest.

Hopefully, I will get it airborne later on this week 

Cheers

Charlie C

Yes....somerthing like that

I'd add in a little expo as well.......just to calm things down around the mid point.........I generally run between 20 & 30% on elevators & ailerons

Phil

Yes....somerthing like that

I'd add in a little expo as well.......just to calm things down around the mid point.........I generally run between 20 & 30% on elevators & ailerons

Phil

 

Done.

The elevator is set up and I am going to replace the wing servo's this week and will set them up as you suggest 

Charlie C

Its ready to go, has been for a week.

Anyone got any good weather I can borrow 

Charlie C

Its ready to go, has been for a week.

Anyone got any good weather I can borrow 

Charlie C

has it flown yet?

has it flown yet?

Eh,   errrr nope, still waiting.

CC

Flew it this evening 

Flies nice, though I managed to get it tumbling out of the sky due to a gross miss-handling error on my part.

Thanks to Stuey for talking me through it.

Like it, but didn't, get any pictures. Will take it to Fenland on Sunday all being well.

Charlie C

Its now nearly the end of July and its still had only one flight under my ownership.

Still made the BMFA News though 

Its been an absolute nightmare to start, which isn't right for a Zenoah 38.

It turned out to be a plug cap/HT lead problem.

Stueysheep came round yesterday evening and sorted/repaired it for me and it now starts third or fourth flick 

Cheers Stuey

Hoping to fly it on Sunday and get some piccies 

Charlie C

Its now nearly the end of July and its still had only one flight under my ownership.

Still made the BMFA News though 

Its been an absolute nightmare to start, which isn't right for a Zenoah 38.

It turned out to be a plug cap/HT lead problem.

Stueysheep came round yesterday evening and sorted/repaired it for me and it now starts third or fourth flick 

Cheers Stuey

Hoping to fly it on Sunday and get some piccies 

Charlie C

Cub's motive power arrived today so it'll be playing'o'clock on Sunday....

Cub's motive power arrived today so it'll be playing'o'clock on Sunday....

Yayyyyy,

All set up ready to start aking a noise at 09:00 then 

CC

Started flicking the Z38 at 09:00 on the dot.

Still ar***hg about at 11:   

I am getting rather peed off with this particular 38.

Still not flown 

Charlie C

Fancy selling it Charlie   

Started flicking the Z38 at 09:00 on the dot.

Still ar***hg about at 11:   

I am getting rather peed off with this particular 38.

Still not flown 

Charlie C

I think this bearcat is frightened of the field... The ignition unit refused to issue a spark! Good job both the other Zenoahs perfromed faultlessly....

Fancy selling it Charlie   

Being as its been re-servo'd, batteried, wired and receivered, I think I need to finish the job and actually fly it.

Everything has its price though 

Charlie C

Charlie

I work in Lynn now so would be able to come and have a look down the field one evening if you so wish

Pick your day and i'll be there.

Steve

Charlie

I work in Lynn now so would be able to come and have a look down the field one evening if you so wish

Pick your day and i'll be there.

Steve

Thanks Steve, that would be very much appreciated. Where are you working???  A coffee stop away per chance 

This evening, instead of watching Top Gear, I eeerrr borrowed, the pick up and coil from Mudders' 38 thats sitting all nice and clean on the bench awaiting return to its rightful owner.

First off, the old one just wasn't sparking, I did check it.

Took it into the garded, flick, flick flick, nothing. Plug is full of petrol. (Engine is inverted)

Cleaned up the plug, stuffed it back in, and one flick later its purring away quite happily.
Started first or second flick several times after that.

It did this last week as well, soooooo.

I have put it away now and will drag it out again tomorrow evening. 

Just out of interest. if when I drag out tomorrow the plug is full of petrol, it means fuel is leaking into the bore somehow 

Any ideas.

Charlie C

Thanks Steve, that would be very much appreciated. Where are you working???  A coffee stop away per chance 

Just out of interest. if when I drag out tomorrow the plug is full of petrol, it means fuel is leaking into the bore somehow 

PCL Ceramics (used to be Porvair)

My suggestion would be that the non return valve is not seated properly on the carb face allowing fuel to drain into the head under gravity. Whip the diaphragm out and have a look it should be flush to the face any slight lift would cause your problem.

S

PCL Ceramics (used to be Porvair)

My suggestion would be that the non return valve is not seated properly on the carb face allowing fuel to drain into the head under gravity. Whip the diaphragm out and have a look it should be flush to the face any slight lift would cause your problem.

S

Just got in and whipped the plug out.

Its full of fuel 

Will take the diaphram out this evening.

Thanks for the call Mr M.

Charlie C

second visit to the field............

<a href="http://www.youtube.com/watch?v=3warjkwY3n4" target="_blank">http://www.youtube.com/watch?v=3warjkwY3n4</a>

and the landing....

<a href="http://www.youtube.com/watch?v=wsPdKeA6LTM" target="_blank">http://www.youtube.com/watch?v=wsPdKeA6LTM</a>

Cooo that was quick Mr Sheep.

Might as well put the landing on as well 

Thanks must be given to Mr Mitchell, Moderator of this parish. He/we spent ages mucking about with the Z38 till the problem was solved, (Plumbing by the way) and the engine re-tuned to his satisfaction.

Gotta be said, the Z38 didn't  miss a beat  , Cheers Mr M

Charlie C

Sorry, to slow. Ah well, the leg will be back on in a week or so  . Looks fast on the video. Wasn't that fast, was it 

CC

Did it rip the legs out on landing?

Did it rip the legs out on landing?

The LH leg and mounting is currently on the bench 

Charlie C