RunRyder RC Helicopter Topic - Kalt Baron 50

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Antiques or Out of Business > Kalt Baron 50

tonybraz
Heliman
Location: Herne Bay. England

The shaft would be weaker because the slot for the 8mm is the same depth as a 10 mm shaft.Maybe another idea bond some carbon fiber tube to the outside to give more torsional strength.

07-13-2009 09:32 PM

trillian
New Heliman
Location: London, UK

The 8mm shaft would not have a slot. (I am assuming the slot does not need to be deeper than 1mm, which is just a guess at the moment). So the point being that if a solid 8mm shaft is strong enough and if the slot on the 10mm shaft is not deeper than 1mm, the same task could be accomplished using this sleeve approach. (keep in mind the rotorhead and drive gear hub would need to bolt onto it and through the sleeve and the 8mm shaft so not sure carbon fibre would be as good as steel in this regard)

But as I say, I am just thinking out loud here and may not see potential problems. Ideally the 8mm shaft would be strong enough on its own and any rigidity offered by the tube on the outside would just be icing on the cake as its only function would be to provide the slot for the collective.

Quote
The shaft would be weaker because the slot for the 8mm is the same depth as a 10 mm shaft.Maybe another idea bond some carbon fiber tube to the outside to give more torsional strength.

07-13-2009 10:21 PM

keef
New Heliman
Location: France

Hi Trillian,

any advances on the guy who could mould Kalt gears? no pressure, just wondering and getting very bored not being able to fly.

keef

07-15-2009 07:25 PM

HOMEPAGE

trillian
New Heliman
Location: London, UK

Gears

I emailed him recently and he said he was still trying to get the mix just right on the Kyosho gears he is experimenting with. He said he is still not certain the mix is right in terms of hardness but not too brittle. But he said he will look into this more and get back in touch.

I also sent a PM to someone on Helifreaks that had mentioned about being able to get gears made. But the post was a few years old so we shall see.

There was a more recent thread about gears for the Gaui 550 and someone on helifreaks was talking about being able to make them but I think he was talking about cutting a gear from nylon stock and so the added element of the bevelled section would kill that option.

What are the specs of the gear you need most?

07-15-2009 07:40 PM

keef
New Heliman
Location: France

kalt replacement gears

Hi Trillian, the baron 50 needs a bevel gear for the tail and a 86(can't remember now)tooth vertical outer for the main drive. The guy I spoke to said that a polyester mix with filler will produce a hard-wearing but flexible gear, a bit like the original Nylon but more durable. I do know that that baron 60, mini-boy, gasser all use different gears, but it would appear that the most wanted is for the baron 50 which was the most popular model of that era. I reckon on an order for 10 is enough to be viable, I already have 4 orders, Midland will undoubtably take a few, so it's just a case of who needs them to get flying again ( I have severe Baron withdrawal symptoms, weeks without flying is getting a bit sad now). If you want a/some gears and £10 isn't too much, let me know and I will get the bloke making them ASAP.
Regards,
Keef

keef

07-15-2009 09:43 PM

HOMEPAGE

trillian
New Heliman
Location: London, UK

Gears

Hi Keef,

I haven't counted the teeth but just eyeing it in the Baron 50 gear looks very close to the same size as the others I have but is a bit thinner. I would be willing to bet the bevelled section is the same.

I discovered that three of my Kalts use the same gear, it is 88 /69 teeth but is slightly thicker than the one on the Baron 50, maybe 1 or 2 milimetres thicker on the main drive gear.

It is Kalt part number 31068.

But regardless, I'd definitely take at least one of the Baron 50 gears at £10.00. If it is really tough enough then it would also work on the others if it's 88 tooth even if it is a bit thinner (well for sure it would be fine on the Baron 30 but I'm more concerned with the GS)

I think I have a spare Baron 50 gear and I can take the gear off the Baron Alpha 60 and compare them for all dimensions. If it looks like the Baron 50 gear will fit the Alpha's then that would be great.

07-15-2009 09:56 PM

trillian
New Heliman
Location: London, UK

difference between Baron 50 and later Baron gears

Ok, I have had a good look at the Baron 50 gear and you're right it is 86 teeth. The bevel section is a finer tooth size compared to the Alpha gears.

So it does not look like the one gear can be shared between them. But that's OK.

I'd still take 2 of the Baron 50 gears as it does look more fragile than the gear on the Alphas.

07-15-2009 10:13 PM

R-Moore74
Senior Heliman
Location: norway

Hi guys!
The uppermost gear on Shawmcky's two pics I think is the same as my Baron 50 gear. Probably older though since mine has the metal hub. I'm still in on 2 - 3 gears from new production if we can get it going!

But it'd have to be the right one...I'll measure up mine and post soon...

I had a great last evening with my father, uncle and a couple of other guys! My 60EX and the Cyclone II had some real great flights and worked flawlessly! Even my ol' man had a go with his X-cell 60 somewhat-carbon-edition!

I had also finished tuning/adjusting my uncles T-Rex450SE V2 so he did some hover training too! Sunny midnight summer nights are great! ...forgot the frigggin' camera though

!!

Bent Are

BEntHeli
Who says it can't fly? - Just watch and I'll make it!!

07-15-2009 10:28 PM

keef
New Heliman
Location: France

baron 50 gear

Hi Trillian, yep, the 50 has a tooth count of 86/75, none about anywhere. However, if your spare 50 gear is undamaged, it will be the best one to make a mould from; could it be borrowed for a while whilst the new gears are being made? Also Ron Lund has a gear 88/65 teeth, and a bag of bits like swashplate and arms etc, all brand new. If you don't know of him I can send you his e-mail. I will be in touch with the injection moulder after I hear from you. Keith

keef

07-16-2009 08:33 AM

HOMEPAGE

trillian
New Heliman
Location: London, UK

Baron 50 gear

Hi again,

Yeah I have two Baron 50 gears both brand new. One is on a heli and the other has never been used and is part of an unbuilt kit.

I'll get a photo of it and count the bevel teeth so we can be sure, I hope it is the same one.

I have heard of Ron Lund but not spoken to him. If he has a gear that will fit the Alpha I'll definitely buy it.

07-16-2009 10:52 AM

trillian
New Heliman
Location: London, UK

This is the gear I have. It is 86/76 teeth, 88mm outside diameter and 9mm thick.

07-16-2009 05:43 PM

R-Moore74
Senior Heliman
Location: norway

Hi Trillian!
Your gear is the same as mine posted earlier. My pretty exact measures are 87.77mm outer diameter, 8.70mm thick. Inner hole is 25.00mm.The outer diameter of the bevel gear is 60.00mm. Mounting hole distance across is 32mm. Tooth count is the same as yours.
My Baron 50 has a solid aluminium hub but my guess is the auto hub fits the same gear. I'll probably just make an auto hub an the lathe at work...
Ship it of to moulding then and I'll get on with the auto hub as soon as I go back to work then 'eyh!

Bent Are

BEntHeli
Who says it can't fly? - Just watch and I'll make it!!

07-19-2009 01:01 PM

trillian
New Heliman
Location: London, UK

Hi R-Moore,

I'll double check the other measurements with yours but I think it's the same gear. I'll have a look at the gear on the built baron 50 as well to see which one looks best. This one was in an un-built baron 50 kit but upon close inspection it looks a bit dirtier than I would expect and ideally could do with a bit of de-burring on some of the edges. If the other one looks better then it could be used as the master.

By the way, Is anyone here interested in an Alpha Baron 60?

I bought this recently but I am now thinking maybe I don't have time for it as a project. It is flyable as-is but really needs a bit of TLC as it is is not quite as clean and tidy as I was led to beleive.

It can be seen flying briefly in this youtube video (not me, this is the seller I bought it from) http://www.youtube.com/watch?v=vRZ_hQjT4OY

If no one is interested, well interested enough for me to recover close to my cost, then I'll strip it down and rebuld it eventually (and probably paint it some crazy colour

07-19-2009 03:40 PM

trillian
New Heliman
Location: London, UK

Yeah, this is the same gear. The inner hole is not perfect for some reason so depending on where it is measured can look like 24mm but it all agrees with your measurements.

Quote
My pretty exact measures are 87.77mm outer diameter, 8.70mm thick. Inner hole is 25.00mm.The outer diameter of the bevel gear is 60.00mm. Mounting hole distance across is 32mm. Tooth count is the same as yours.

07-19-2009 06:11 PM

keef
New Heliman
Location: France

baron 50 gear

Hi Trillian, your pic of the gear is also exactly as mine, it accepts the metal hub. I have contacted a guy in the states and am waiting for him to come back to me with some more info. He has gears for all sorts of Kalts, a big bag apparently. he is digging them out & I will let you know when he lets me know. But your gear could easily be the master for the moulding, the guy has a webpage showing some of the stuff he moulds for classic vehicles, www.cruiseruser.com I will post again when I have some news.(getting big time bored not being able to fly at all)

keef

07-21-2009 10:00 AM

HOMEPAGE

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Antiques or Out of Business > Kalt Baron 50

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