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My New Theoben Evo .177 (Converted To Spring Power)


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All built up again

Well just picked this up a .177 evolution   was offered it a while ago but decided against it as gas ram can be bit touch and go but cudnt help thinking a spring conversion would make a fantastic

I've hit a few snags on way though the cocking shoe is kaput it's fallen apart and dumped metal shards inside everything so needs a full polish of everything New cocking shoe A hefty spring as the

Quick update all parts been made he has spun the piston and shaved the rebate indie that the RAM o ring sits in as caught on spring new complete delrin guide and top hat and pre loads should be smooth as now !

We rebuilding it at his and fiting a securing pin through so IL add pics while there

Cant wait

Edited by mattybugeye
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That's a lot of spring that you've had to fit to make the power you've got.

 

Honestly, does it really shoot better than when the ram was fitted? I know the cocking cycle will be easier but what about everything else?

 

Interesting thread.

Edited by andyfr1968
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Well I was up at his workshop for 4 hours today we got new guide in and top hat all greased up etc and now shoots a dream very very little recoil and no more horrific twang put around 30 shots through it and its settled at a very consistent 11 ft lbs exactly stays in the 11.0s too over moon with it he even made a very neat cover for back of action too as they just have a cer clip and o ring as standard finishes it off perfect I'm really going to enjoy this gun was worth all the effort ive put in, he even made me another spare guide as I may be tempted to do 1 in .22 at some point. The guy who made it makes custom parts for all guns to a great standard and is a top bloke to deal with IL put a link to his website up when its finished :-)

Few pics of what we done today

The new guide

20140708_122204.jpg

 

20140708_122212.jpg

 

20140708_184923.jpg

 

20140708_184917.jpg

 

Will put some groups up from it probably tomorrow looking forward to good test

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Well had half hour this morning with it and was instantly unhappy with trigger was awful so stripped back down was full of grease and gunk

Removed all parts gave good clean them used dremul to polish all metal to metal contacts splash of oil rebuilt and much better the pull is still pretty heavy so may bend the spring in to make lighter .

Couple of pics

20140709_102006.jpg 20140709_102949.jpg 20140709_102954.jpg 20140709_102958.jpg 20140709_104458.jpg

 

then put 6 shots through chronograph and got these readings

 

20140709_095144.jpg 20140709_095222.jpg 20140709_095332.jpg 20140709_095417.jpg 20140709_095531.jpg 20140709_095609.jpg

 

can't argue with that ;)

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