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TM7 trigger spring mod


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#1 side-effects

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Posted 29 September 2010 - 09:33 AM

Was messing around the other night and finally got sick enough of the stock return spring to do something about it. LOL. Dave at Flasc was nice enough to send me one of his new bearing metal triggers for beta testing and while it made a huge difference it becomes evident that the return system really is what makes the trigger bad (IMO) on these markers. Anyway, on with it.

Start by disassembling the marker to get to the trigger.
Prep the trigger by turning the return spring tension screw out until there is about 4 threads showing.
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Bend the stock return spring around the mounting pin or anything of similar diameter until it is 180 degrees or cut the end off as I did.
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Next sacrifice your pen for it's ever elusive "pen spring". Cut to the approximate length, depending on how much return pressure you are looking for (may require some trial and error) and stretch the last coil on the end you cut as shown.
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Place the spring with the stretched coil over the two pins in the marker body as shown.
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Place your modified stock return spring in the marker with the long arm of the stock spring holding the pen spring in the body.
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While holding the stock return spring down with your finger place the tension screw on your trigger in the other end of the spring and reinstall the trigger on it's pivot. Once in place it all stays in there. No worries of it all flying out at you when you assemble or disassemble.
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Reinstall the selector shaft barrel and trigger guard. Reassemble marker and adjust trigger as needed, although you shouldn't have to unless you are installing a new trigger as I did.
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The only down side is that you have to take the marker apart to adjust the trigger return tension and if you were to cut it too short you would have destroy another pen for it's donor spring LOL. Only cut about a half coil off at a time and you should be fine. If you are using a stock trigger your spring will be slightly shorter than mine depending on how much tension you want. I personally don't like alot of return tension as I like to walk my trigger.

Oh and It walks like no one business now!
Thanks to Dave at Flasc for another great BT upgrade!
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#2 bvdave

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Posted 29 September 2010 - 11:44 AM

great idea and nice guide for a super easy to do mod for anyone
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#3 Warmachine

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Posted 29 September 2010 - 01:07 PM

Well done guide Side Effects!
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#4 longhornjake

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Posted 29 September 2010 - 02:48 PM

Any advantages to using this update on the spring mod versus just using Dave's trigger with the stock trigger spring, whether using Roberts mod to the spring?
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#5 side-effects

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Posted 29 September 2010 - 03:43 PM

View Postlonghornjake, on 29 September 2010 - 02:48 PM, said:

Any advantages to using this update on the spring mod versus just using Dave's trigger with the stock trigger spring, whether using Roberts mod to the spring?

Oh there is definite improvement in just using Dave's trigger. It removes most of the side to side play and takes the gritty feeling out of it and I just prefer the feel of a metal trigger anyway. But the stock spring still leaves it feeling mushy. I would say this would be the complete opposite of Roberts mod. If you like the positive feel of that mod with a single trigger than this is probably not the mod for you. However if you like a double trigger and want it to "bounce" more like a speedball gun than this is it.
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#6 Canascar

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Posted 29 September 2010 - 08:09 PM

Nice work brother, excellent walk-through. :)
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#7 Five Oh

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Posted 30 September 2010 - 05:28 PM

are the Flasc triggers available? sorry for the off topic question?
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#8 Tenit

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Posted 30 September 2010 - 07:42 PM

Think he's aiming for Christmas release
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#9 Five Oh

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Posted 30 September 2010 - 08:00 PM

Thanks for the reply. I thought they may have been out already since i saw one up there in side effects photo. I dont want to miss that one.
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#10 bvdave

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Posted 30 September 2010 - 09:25 PM

Goal is to have them ready in December as said above, FX has a prototype hes testinig for me
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#11 Five Oh

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Posted 01 October 2010 - 09:19 AM

Cool, If you want to send a prototype to the states for testing LMK, i will gladly pay handsomely for one Dave :) If not December is not too far away.
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#12 bvdave

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Posted 01 October 2010 - 11:44 AM

Sorry, only had 2 prototypes done up, was planning on three but one got damaged in the final stages of building.. DUOH!
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#13 side-effects

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Posted 01 October 2010 - 02:01 PM

Now I feel special! It is a really nice piece, nothing I would change on it thus far. Might have to start a preorder Dave!
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#14 Five Oh

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Posted 01 October 2010 - 08:59 PM

I'm in for a preorder. LMK!
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#15 bvdave

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Posted 01 October 2010 - 10:04 PM

well there "may" be a preorder up soon as we have a clear date as to when they will be avaiable, theres a HUGE ammount of stuff in production right now that is going to keep me busy for a while, once im over that hurdle ill have a better idea of when I can get the triggers finished
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#16 LT.DAN

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Posted 02 October 2010 - 11:35 AM

i just did the spring mod while i had it apart today. I had a barrel leak to fix from when i did my clean up for the year.

while it was apart i did the spring mod and man oh man is there a difference. no more annoying gritty feeling and the return feeling is nice.

feels like how it should have come from the factory.

thanks for posting this

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#17 side-effects

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Posted 02 October 2010 - 06:33 PM

Glad you liked it Lt.Dan!
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#18 sameagol26

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Posted 02 October 2010 - 09:35 PM

I will likely do this as well. Even a simple enough mod for me! :freaked:
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#19 Warmachine

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Posted 28 December 2010 - 02:54 PM

I pinned this as it is informational and I never want it to go away. :)
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#20 side-effects

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Posted 28 December 2010 - 03:32 PM

Thanks bro!
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