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Airdale's Bush Gear

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For starters I would like to say... I would have chosen some other manufacture... What a PAIN! 

I thought I would post an update with the modifications. Also a few were asking how the struts worked.

Here is one assembled and one apart. The spring is installed with the "hat" and bolt through the hole in the hat and though the slot. So it "pulls" instead of "pushes".

DSC00730_zpskqsferw1.jpg

The difference in the springs (long travel mod) thanks to Leni!!! :BC:

DSC00733_zpsrjbnsacf.jpg

So now I have to cut the slots 2" and build the fixtures to hold the larger diameter springs.

DSC00735_zpsmzdpohuw.jpg

I have a source for the metal and a machinist with a Bridgeport to cut the slots...

 

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Posted (edited) · Report post

What is ID and cost of those black springs?  Are they same ID top and bottom?   I may need one for a nosegear.  EDMO

Edited by EDMO

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What is ID and cost of those black springs?  Are they same ID top and bottom?   I may need one for a nosegear.  EDMO

The ID is 1.8" top and bottom. 7.5" long with no preload. And it looks like I will have to compress the springs 2" to get them in. $50 bucks apiece less shipping. They make a lighter spring (I might try if these are too stiff) also. That might be better for the nose. The part number is 503190854 for what I have.

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Posted (edited) · Report post

What is ID and cost of those black springs?  Are they same ID top and bottom?   I may need one for a nosegear.  EDMO

The ID is 1.8" top and bottom. 7.5" long with no preload. And it looks like I will have to compress the springs 2" to get them in. $50 bucks apiece less shipping. They make a lighter spring (I might try if these are too stiff) also. That might be better for the nose. The part number is 503190854 for what I have.

Are these the 325 pound springs?  What is the lighter ones?  Who sells them?   If you compress them 2", then aren't you losing gear travel?   I would think with that rating, about a 1" static compression should be right for your plane weight?  Can you modify one or both of the spring caps to give you less static compression?  My estimated Static weight on nose should be 120 to 150 pounds, depending on GW.

Thanks, EDMO

Edited by EDMO

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Posted · Report post

Assuming you bought this gear some time ago?

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Posted · Report post

I don't know. It is for a Skidoo.. rear spring I think. Leni might know the other part number.

If you look at the red spring compared to the black, look how far the coils are spaced. The red will coil bind in 1.8". I should be good. It has to be a big improvement.

Yea, I bought these sometime back. It several months for Bret to get it to me. So long I was frustrated and told him to give me my money back.. LOL! Then one had the brake mounting plate clocked wrong so I had to send it back. I will say his turn around on that was a lot better.

No doubt I would have been a lot further ahead if I had bought something that was pretty much ready to bolt up. I would be done by now! :rolleyes:

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Posted · Report post

looks good.  I think you will find this spring much better than the previous spring in them.  Compression rate is much more suited to our planes and the extra travel should keep you from bending up the bird.  I have beat the crap out of mine and no more bent axles or sharp thumps of metal to metal when rolling over rocks and snow banks.

 

:BC:

 

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I also redrilled the hole in the top "hat" so I would have less preload on it.  I drilled it as close to the flat plate as I could and still get a wrench on the bolt.  remember the spring rate on them is 325 per inch of load so in order to run out of spring and do metal to metal your going to have to hit hard enough to more than likely set off the ELT :lmao: 

 

:BC:

 

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Posted · Report post

Oh fine, I finally ordered a pair of springs,

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I also redrilled the hole in the top "hat" so I would have less preload on it.  I drilled it as close to the flat plate as I could and still get a wrench on the bolt.  remember the spring rate on them is 325 per inch of load so in order to run out of spring and do metal to metal your going to have to hit hard enough to more than likely set off the ELT :lmao: 

 

:BC:

 

So did you preload this spring 2 inches or did you build a whole new mount to hold the spring, I'm in the designing stage right now, Thinking about building a whole new setup that holds the spring, I guess my question is, if you preloaded the spring 2 inches do you regret it or does it work great the way it is?

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I put the preload on them and they work good.  no issues so far.

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I was thinking about making a mount that I could put the top adjuster off the sled shocks on it so I could adjust the preload.  not sure if that's complete overkill or not though.

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Ha that is exactly what I was thinking, but didn't want to waste my time if yours work fine with a bit of preload, thanks

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I also redrilled the hole in the top "hat" so I would have less preload on it.  I drilled it as close to the flat plate as I could and still get a wrench on the bolt.  remember the spring rate on them is 325 per inch of load so in order to run out of spring and do metal to metal your going to have to hit hard enough to more than likely set off the ELT :lmao: 

 

:BC:

 

I can do that, but I was thinking about moving the slot upwards a half inch or so to help also. I will still have to compress the spring to get it in.

1/2" on one end of the slot and 1 1/2" slot added on the lower end? Then I can spin and drill another hole on the hat and gain another 3/8" maybe.

:huh:

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