hydro non trips????

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who needs them and why :lol:

Ask Stu Barr about non trips.....

I ran one of his 67 boats for a season and found that on the exit of the corner the boat would dart because he had too steep an angle on the non trips. He changed that on future boats and the dart went away. He did have boat that runs wet with high attack angles, so this may not be for boats with less wet front sponsons.

For my use, non trips of 60 degrees to the run surface is the minimum. With a boat that has less front sponson weight (JAE) you MIGHT be able to get away with a little less.

This is just the way that I build, others may differ. Guess I will know for sure when I race against all theJAE's this next season. If I get spanked, then I will know for sure ;)
 
Its good to know that I am not the only one not building a JAE :lol:

Olly

Olly:

But I am SURE that you are happy that so many are building them. What a GREAT thing for the hobby. :)
If this keeps up im going to have a FLEET of hydros 12 and 21 are here one done other is next maybe when the 21 is done the 45 will be next
 
What is a non trip? Are they like shingles or steps on the bottom of the sponsons?
 
It is the chamfer between the bottom and side of a sponson. It's purpose is to keep the side of the sponson from making hte hull dart sideways. But as was noted, if the sponson is light on hte water, it may not be necessary, i.e. the JAE sponsons do not have them. Many other makers do. The EAgle SGX has a typical anti-trip chine.
 
Martin,

Don't the "Geraghty" version of the JAE sponson, ie the ones with the the wider rounded top, have non trips? From the pictures posted I never have gotten a good look at the bottoms I just assumed. I am awaiting my JAE 21 kit and I want to build sponsons like those but I want to be sure of their design now. Thanks

Cheers

Kevin
 
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Kevin you have it backwards. The "H" Hall sponsons have non trips because those were the first heat racing boats that were built. Thought we needed them. The Geraghty sponsons are 90 degrees to the bottom and work really well with the correct turn fin. If you dont have enough turn fin you will be going after the boat. Either sponson works really well with the JAE setup.
 
Kevin you have it backwards. The "H" Hall sponsons have non trips because those were the first heat racing boats that were built. Thought we needed them. The Geraghty sponsons are 90 degrees to the bottom and work really well with the correct turn fin. If you dont have enough turn fin you will be going after the boat. Either sponson works really well with the JAE setup.
David,

The JAE 21 kit being made now by Zipp, can it be assumed from your comments above, that it includes the "Hall" styled sponsons, meaning flat bottom?
 
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I think that the kits have the Geraghty sponsons. Both are flat bottom. The Geraghty has a 90 degree chine, the Hall has a non-trip chine. You can see it on the plans that were linked in Rod's post about the 21 and 45 plans.
 
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I have ran both sets. Saw no difference whats so ever. The 90 degree are very simple to build, and will continue to run this style. Make it as complicated as you want, if it makes you feel better.
laugh.gif
 
Kevin you have it backwards. The "H" Hall sponsons have non trips because those were the first heat racing boats that were built. Thought we needed them. The Geraghty sponsons are 90 degrees to the bottom and work really well with the correct turn fin. If you dont have enough turn fin you will be going after the boat. Either sponson works really well with the JAE setup.
My appologies for getting them backwards. Do you have any dimensions or drawings for your version for the 21 boat? Thanks

Kevin
 
Kevin you have it backwards. The "H" Hall sponsons have non trips because those were the first heat racing boats that were built. Thought we needed them. The Geraghty sponsons are 90 degrees to the bottom and work really well with the correct turn fin. If you dont have enough turn fin you will be going after the boat. Either sponson works really well with the JAE setup.
David,

The JAE 21 kit being made now by Zipp, can it be assumed from your comments above, that it includes the "Hall" styled sponsons, meaning flat bottom?
I have the 21 JAE Zippkit and the sponsons are flat bottom with 90 degree sides.
 
does having a larger turnfin add alot more drag than an angle on the sponsons especially if the nontrip is above a ride pad? or is it really a horse a piece?
 

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