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KM4 SR7 Stock MOTOR - handle the spring ?


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#1 Nimrod Cushmaro

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Posted 31 October 2013 - 07:19 AM

hello.

my friend own the sr 7, and he want to change the spring to a 120m spring. is it necesery to switch out the KWA stock motor also ? the KWA stock motor will work ok with the 120m spring ?

thank you :)

#2 gcw360

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Posted 31 October 2013 - 08:51 AM

View PostNimrod Cushmaro, on 31 October 2013 - 07:19 AM, said:

hello.

my friend own the sr 7, and he want to change the spring to a 120m spring. is it necesery to switch out the KWA stock motor also ? the KWA stock motor will work ok with the 120m spring ?

thank you :)
Yes, absolutely.  I've known KWA motors to pull M150 springs.

#3 SR105

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Posted 31 October 2013 - 09:11 AM

Hi Nimrod. The spring in the SR7 is already an m120 spring. If you want higher FPS, you'll want to change your cylinder to any of these:
http://www.evike.com...oducts_id=25871
http://www.evike.com...oducts_id=35787
http://www.evike.com...oducts_id=27667
or similar porting location

#4 Gavilan

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Posted 13 November 2013 - 01:00 PM

I thought the SR7's had m110's in them?  Not true?

#5 gcw360

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Posted 13 November 2013 - 05:36 PM

View PostGavilan, on 13 November 2013 - 01:00 PM, said:

I thought the SR7's had m110's in them?  Not true?
They once had a  KWA m100 with a type 1 cylinder.  Now they use the CQR cylinder and an  KWA m120.

Hope this helps.




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