Hot Bodies Cyclone


Old 05-06-2009, 02:39 PM
  #16171  
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Originally Posted by linger View Post
Korey - you really should learn not to agree with STLNLST on anything. It's a slippery slope. It will be a matter of time before you show up to the track in a dress.

Sorry - my fingers aren't calibrated enough to differentiate a progressive spring from a linear one, and I don't know what a progressive spring is supposed to feel like on the track. What matters is if the spring works - then it really doesn't matter if it's progressive or linear - unless you are an engineer and you need to know why.

I do know that if you hand a Hara spring over to any engineer - they willl tell you that it's linear. And I bet that if I ever get a change to measure it - they will measure linear.

See.....this type of info will only help you in the rcgt class. No wonder you're not going to win this year You call it failure........I say it's a life experience.
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Old 05-06-2009, 02:39 PM
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Originally Posted by bigz View Post
hi, anyone familiar with hara springs ver 1. can't figure out which is the equivalent of the hpi blue and pink springs.

hara springs are in kg while hpi are in lbs.

thanks.
I'cant tell you what exactly LBS. right now since I don't have the chart on hand but I can tell you the HPI Pink is about 18 LBS. and the HPI Blue is about 16 LBS. If you asking about the Hara's, they are totally different things. They start at about 17 LBS down to 13 LBS, but when you try to compress it by your fingers (someone said not suppose to) you will notice it start soft at the beginning and getting stiffer. Compare to HPI's, you could fully compress the Springs all the way. So, you need to try it and see which one is good for.
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Old 05-06-2009, 02:44 PM
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Originally Posted by Korey Harbke View Post
Not trying to step on your toes Ling, but I will agree that the construction of the spring itself is "linear"... The springs still feel as if they are "progressive" on the track. Even Hara himself says that. They are similar to the Xray springs which are just rated with a spring constant rather than a spring rate.

-Korey
You just earned yourself a soda when you get down here. Thanks for having my back against the norcal FAILURE!!!!!
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Old 05-06-2009, 02:54 PM
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Originally Posted by STLNLST View Post
You just earned yourself a soda when you get down here. Thanks for having my back against the norcal FAILURE!!!!!
I believe he still has more wins than you...heck, Kathy has more wins than you. In fact, she has more wins in the last 3 races than you have in your sedan career! FAILURE!
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Old 05-06-2009, 03:07 PM
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Originally Posted by KDR View Post
Bigz,
Not sure if this helps you or not, in any event it is a great item to keep in your pit box. See attached.

-Steve
don't you wonder where all those measured spring values came from?

Originally Posted by EJ20 View Post
I'cant tell you what exactly LBS. right now since I don't have the chart on hand but I can tell you the HPI Pink is about 18 LBS. and the HPI Blue is about 16 LBS. If you asking about the Hara's, they are totally different things. They start at about 17 LBS down to 13 LBS, but when you try to compress it by your fingers (someone said not suppose to) you will notice it start soft at the beginning and getting stiffer. Compare to HPI's, you could fully compress the Springs all the way. So, you need to try it and see which one is good for.
6542 Blue: 273 g/mm, 15.29 lb/in
Measured 14.29, 14.27 - average of 14.28

6543 Silver 302 g/mm, 16.91 lb/in
Measured 16.34, 16.07, average of 16.21

6544 Gold 340 g/mm, 19.04 lb/in
Measured 17.38, 17.60 - average of 17.49

6545 White 363 g/mm, 20.33 lb/in
Measured 20.35, 19.33 - average of 19.84

6546 Yellow 388 g/mm, 21.73 lb/in
Measured 20.27, 20.77 -average of 20.52

6547 Red 400 g/mm, 22.40 lb/in
Measured 20.61, 20.60 - avearge of 20.61

6548 Pink 320 g/mm, 17.92 lb/in
Measured 16.60, 16.88 - average of 16.74

to get from g/mm to lb/in - just multiply by 0.056

Thanks to James Arluck for donating his new HPI spring set to get measured. The measured values do differ from the published values - which is absolutley normal. Also interesting to note that the HPI Yellow and Red practically overlap in values.
The HPI springs are indeed linear. I have the entire force/displacement curves to prove it.

Originally Posted by STLNLST View Post
You just earned yourself a soda when you get down here. Thanks for having my back against the norcal FAILURE!!!!!
Are you going to borrow money from Tina to buy Korey a soda?

Last edited by linger; 05-06-2009 at 03:14 PM. Reason: legibility
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Old 05-06-2009, 03:23 PM
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Thanks Ling for your Info.
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Old 05-06-2009, 04:56 PM
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Originally Posted by Advil View Post
I believe he still has more wins than you...heck, Kathy has more wins than you. In fact, she has more wins in the last 3 races than you have in your sedan career! FAILURE!
That's not true. I have a good handful of wins over the years. You were at a couple of them too She is the fastest Davenport in your household though
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Old 05-06-2009, 04:57 PM
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Originally Posted by linger View Post
don't you wonder where all those measured spring values came from?



6542 Blue: 273 g/mm, 15.29 lb/in
Measured 14.29, 14.27 - average of 14.28

6543 Silver 302 g/mm, 16.91 lb/in
Measured 16.34, 16.07, average of 16.21

6544 Gold 340 g/mm, 19.04 lb/in
Measured 17.38, 17.60 - average of 17.49

6545 White 363 g/mm, 20.33 lb/in
Measured 20.35, 19.33 - average of 19.84

6546 Yellow 388 g/mm, 21.73 lb/in
Measured 20.27, 20.77 -average of 20.52

6547 Red 400 g/mm, 22.40 lb/in
Measured 20.61, 20.60 - avearge of 20.61

6548 Pink 320 g/mm, 17.92 lb/in
Measured 16.60, 16.88 - average of 16.74

to get from g/mm to lb/in - just multiply by 0.056

Thanks to James Arluck for donating his new HPI spring set to get measured. The measured values do differ from the published values - which is absolutley normal. Also interesting to note that the HPI Yellow and Red practically overlap in values.
The HPI springs are indeed linear. I have the entire force/displacement curves to prove it.



Are you going to borrow money from Tina to buy Korey a soda?
I'm going to use the money I saved by switching to Geico
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Old 05-06-2009, 05:02 PM
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Originally Posted by Advil View Post
I believe he still has more wins than you...heck, Kathy has more wins than you. In fact, she has more wins in the last 3 races than you have in your sedan career! FAILURE!
toasty......
As Dr Phil would say...How does that make you feel?/

Sometimes the truth hurts.....
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Old 05-06-2009, 05:02 PM
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Originally Posted by STLNLST View Post
That's not true. I have a good handful of wins over the years. You were at a couple of them too She is the fastest Davenport in your household though
HA! She has gone 3 for 3 in the last 3 weeks. How about you for....let's just say the last 3 years? LOL

She has the most wins, our son has the fastest lap. I'm just old, fat and slow, and I can still beat YOU!

P.S. Don't blame me....blame the HB car we have her driving. She was never this successful with all of the other cars.....
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Old 05-06-2009, 05:06 PM
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Originally Posted by STLNLST View Post
I'm going to use the money I saved by switching to Geico
Don't you mean how much the Ol lady saved by by switching to Geico
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Old 05-06-2009, 08:58 PM
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Originally Posted by KDR View Post
Bigz,
Not sure if this helps you or not, in any event it is a great item to keep in your pit box. See attached.

-Steve
Hi Steve,

i can't open the file.
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Old 05-06-2009, 09:05 PM
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Originally Posted by EJ20 View Post
I'cant tell you what exactly LBS. right now since I don't have the chart on hand but I can tell you the HPI Pink is about 18 LBS. and the HPI Blue is about 16 LBS. If you asking about the Hara's, they are totally different things. They start at about 17 LBS down to 13 LBS, but when you try to compress it by your fingers (someone said not suppose to) you will notice it start soft at the beginning and getting stiffer. Compare to HPI's, you could fully compress the Springs all the way. So, you need to try it and see which one is good for.
that's what i've heard also. so if im using HPI Pink and Blue i can't find a match with the Hara springs since their softer...... have to try each at the track.
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Old 05-07-2009, 03:55 AM
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Originally Posted by bigz View Post
Hi Steve,

i can't open the file.
you need acrobat reader to view the file

sometimes you might need to save the file to your PC, then try opening it
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Old 05-07-2009, 06:31 AM
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Progressive or linear discussions asside, when do you use HPI or Hara springs?

Personally im starting to like the hara springs for long, flowing tracks. I feel it makes the car feel more predictable and smoothes the steering. For twisty tracks i like the HPI springs as it feels more sharp turning in.

What are you thoughts?
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