Jerry Bates F4F Wildcat - Page 10 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 05-09-2016, 01:51 PM   #91
mwavesdave
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Re: Jerry Bates F4F Wildcat


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Take offs and landings, I think are easier on the runway. Far less chance of catching a wheel on something and doing donuts all over the place, or nosing over.
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Old 05-09-2016, 03:06 PM   #92
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Re: Jerry Bates F4F Wildcat

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Originally Posted by mwavesdave View Post
Take offs and landings, I think are easier on the runway. Far less chance of catching a wheel on something and doing donuts all over the place, or nosing over.
Could be! I just remember the 5 hours or so of instruction I had on a Citabria, back in the 80's. Flying was fine, ground handling not so much!

In any case, I don't think it would be right to maiden the 'cat somewhere other than Shearwater.
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Old 05-09-2016, 06:47 PM   #93
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Re: Jerry Bates F4F Wildcat

Just have to watch, we've got a few Focke-Wulfe's, the odd Zero, etc that might be out looking for payback.
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Old 05-13-2016, 05:55 AM   #94
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Re: Jerry Bates F4F Wildcat

So PM'd Kevin just now, about this little issue. Robart seems to have lost all quality control with the Wildcat gear. First, one of the drive chains and several screws were missing from the kit. Now, I went to install the chains, the replacement having arrived, but only to find that the drive sprocket on the right main has smaller, shallower teeth cut, and the chain won't fit on. Left gear, and the cylinder gears are fine. So until we can get that sorted out, I can't finish setting up the retracts. Argh.
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Old 05-13-2016, 09:11 AM   #95
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Re: Jerry Bates F4F Wildcat

Am I pissed? Oh yeah.

Dave, I downloaded those pics, and am firing off a nasty email to Robart. For the money they charge, these retracts should be flawless... and they ain't.
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Old 05-13-2016, 11:18 AM   #96
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Re: Jerry Bates F4F Wildcat

Wow, one would certainly expect better. There looks to be a lot of slop in the chain also. Are you able to take some of the links out of the chain? Very sloppy craftsmanship...
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Old 05-13-2016, 12:46 PM   #97
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Re: Jerry Bates F4F Wildcat

Don't look at the slop in the chain J-G, that's just due to the fact that the one sprocket won't allow the chain to go into position. Which means I can't mark out the location of the air cylinders, and bolt them into place, as they do have to be tensioned. The cylinders and gear are totally separate parts, only connected by the chains. Tensioning is done by putting everything together, then marking and drilling the holes and mounting the cylinders so as to have even tension on both units. It's certainly not fool proof, that's for sure!
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Old 05-13-2016, 02:02 PM   #98
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Re: Jerry Bates F4F Wildcat

So I just called Robart. No one home! Got a voicemail (no option to leave a message, probably lucky for them) giving their business hours (which this is). So I suspect they closed for the week to go to Joe Nall.
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Old 05-13-2016, 10:28 PM   #99
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Re: Jerry Bates F4F Wildcat

I have a theory.

It sounds like somewhere over the years they changed the sprocket to suit a chain of a different pitch.

Ie original sprocket was pitched for an imperial pitched chain, and somehwere along the line was an engineering change (cost saving change?) to a different pitched chain, and they needed to change the sprocket to match the new pitched chain (?)

Just my thought, having looked at the pictures, that chain to sprocket pitch is WAY off!
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Old 05-13-2016, 11:04 PM   #100
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Re: Jerry Bates F4F Wildcat

Could very well be. I'm sure I've seen photos in the past of other guys using the Robart retracts that showed only 1 cylinder for the whole setup. Mine has one for each side. Assuming my memory is correct, then clearly they have changed the design.

Gonna be interesting to see how this gets resolved. I expect it will involve shipping the gear back to them to fix!
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