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Old 05-05-2009, 09:40 PM   #16156
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Default hara springs

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.
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Old 05-05-2009, 09:57 PM   #16157
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Hello all, I am trying to complete my build and mounted a Tekin Redline in my chassis and it looks like it touches the lower plate. Is this correct or do I need to do something different?
Since this is my first brushless combo with this chassis I dont have anything to compare to. All help and tips are appreciated.

Thanks
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Old 05-05-2009, 10:51 PM   #16158
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Quote:
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.
If they haven't changed....the Hara springs are progressive and the HPI's are linear. Correct me if I'm wrong. It's sort of like apples to oranges.
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Old 05-05-2009, 11:32 PM   #16159
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If they haven't changed....the Hara springs are progressive and the HPI's are linear. Correct me if I'm wrong. It's sort of like apples to oranges.
Hey Failure. That's the problem with the internet. Someone spews out some info and everyone treats it as fact. I keep hearing at the track that the Hara Springs are progressive cause they read it on the internet.

A progressive spring has a non-constant pitch or non-constant diameter. Take a look at your precious Hara spring. It's fixed pitch and fixed diameter. That means it's linear.
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Old 05-05-2009, 11:37 PM   #16160
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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
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Old 05-05-2009, 11:56 PM   #16161
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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.
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Old 05-06-2009, 12:17 AM   #16162
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LOL too funny. Maybe we should have you measure the hpi pro 4 springs and the hara springs for the heck of it sometime.

-Korey
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Old 05-06-2009, 01:20 AM   #16163
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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.


Its funny how you say you know that yet you havnt measured nor handed it to an ME, but yet you still know it as if you already did. Kinda breaking your own argument when you simply could have replaced that funky statement with "i am 100% sure they are linear."

Oh to sit as a neutral party and witness the amazingness that is internet forum posting.
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Old 05-06-2009, 04:04 AM   #16164
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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.
so, its difficult to compare??
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Old 05-06-2009, 07:20 AM   #16165
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Hey,

New to the forum.

I currently have a Pro4 and am looking to get a belt car. Are parts still compatible from the older pro4 to a newer cycone (CF race version). It would be nice to be able to use what i have.

Also, have anyone here driven both cars and can say how they compare?

Thanks,
Tom
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Old 05-06-2009, 07:44 AM   #16166
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Yes,the Older versions of the Cyclone use the same Arms,C-hubs,Knuckles,bearings,and toe blocks.The cars drive similar,but the cyclone feels more refined.I would say,pull trigger on a getting a cyclone.You wont regret it.
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Hey,

New to the forum.

I currently have a Pro4 and am looking to get a belt car. Are parts still compatible from the older pro4 to a newer cycone (CF race version). It would be nice to be able to use what i have.

Also, have anyone here driven both cars and can say how they compare?

Thanks,
Tom
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Old 05-06-2009, 08:55 AM   #16167
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Thanks for the info. I love my pro4, so i bet i would like a cyclone too.
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Old 05-06-2009, 10:31 AM   #16168
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Also, have anyone here driven both cars and can say how they compare?
Compared to the cyclone the pro 4 pushes in corners, which is typical of shaft drive cars. I found that if you are a good driver then the pro 4 can be fast in the spec classes. But generally speaking the handling of the Cyclone is far superior to the Pro 4 (which is also pretty typical of shaft vs belt).

Been a while since i drove my pro 4 though....
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Old 05-06-2009, 11:18 AM   #16169
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really?!
Its an old LOSI joke everything comes out in 2 weeks when it comes from LOSI
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Old 05-06-2009, 01:46 PM   #16170
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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.
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
Attached Files
File Type: pdf All Manu Spring Chart.pdf (63.0 KB, 95 views)
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