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RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  Dia Compe Tech 7 restoration
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Author Topic: Dia Compe Tech 7 restoration  (Read 4850 times)

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Offline tfi_friday

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Dia Compe Tech 7 restoration
« on: May 14, 2017, 02:07 PM »
I've restored a few sets of these now and it's relatively straight forward but the prices of Tech 7s are a bit silly for a clean set so to clean up might save a few quid.

Here's what I started with. They came on an 1987 GT PFT I picked up for £40 (complete bike)



Not in bad shape, but I need a white/silver for my next build and there's heavy rust on the locking pins.

That's where I started first remove the locking pin spring and to dremel the rust off the top of the locking pin as best I could. Stuck the spring in Citric Acid at the same time.







To get a nice finish on the bolts and locking pin I put the end of it in a drill and spin it around against sand paper. Works great and fast to do.





With that done, it's to remove the paint (black is paint not anodiized)





Then it's just to clean it up and remove the small blemishes from the body and levers.



All done and ready for paint/powder



Here's a couple of sets I restored earlier




« Last Edit: May 14, 2017, 02:12 PM by tfi_friday »

Offline Andyboy77

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Re: Dia Compe Tech 7 restoration
« Reply #1 on: May 14, 2017, 02:32 PM »
Excellent job and guide!  :4_17_5:  fistblump

Offline BMX1973

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Re: Dia Compe Tech 7 restoration
« Reply #2 on: May 14, 2017, 09:52 PM »
Very nice.  :coolsmiley:

griff

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Re: Dia Compe Tech 7 restoration
« Reply #3 on: May 14, 2017, 09:56 PM »
Nice work  :4_17_5:

Offline CustardLips

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Re: Dia Compe Tech 7 restoration
« Reply #4 on: May 14, 2017, 10:22 PM »
Bolts, drill and sand paper... great tip.  :daumenhoch:
"Every year is getting shorter, never seem to find the time"

"WWG1WGA"

Offline Taipan

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Re: Dia Compe Tech 7 restoration
« Reply #5 on: May 14, 2017, 10:49 PM »
« Last Edit: May 14, 2017, 10:55 PM by Taipan »

Offline tfi_friday

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Re: Dia Compe Tech 7 restoration
« Reply #6 on: May 15, 2017, 09:30 AM »
Bolts, drill and sand paper... great tip.  :daumenhoch:

Gives a nice brushed finish...

A bit of autoglym and a rad will polish them up also (just watch the rag and the drill)

Offline tfi_friday

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Re: Dia Compe Tech 7 restoration
« Reply #7 on: May 15, 2017, 11:16 AM »
Ready for paint :-)




Offline deeman

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Re: Dia Compe Tech 7 restoration
« Reply #8 on: May 15, 2017, 11:20 AM »
Great work Alan  :daumenhoch:
SMALL MINDS TALK ABOUT PEOPLE....
MEDIUM MINDS TALK ABOUT EVENTS...
GREAT MINDS TALK ABOUT IDEAS....

Offline tfi_friday

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Re: Dia Compe Tech 7 restoration
« Reply #9 on: May 15, 2017, 01:56 PM »
Great work Alan  :daumenhoch:

cheers :-)

They're turning out nicely.

Cleaned up the levers since they won't be painted and started painting the bodies.




Offline tfi_friday

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Re: Dia Compe Tech 7 restoration
« Reply #10 on: May 15, 2017, 05:28 PM »
...and done!


Offline brimfull

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Re: Dia Compe Tech 7 restoration
« Reply #11 on: May 07, 2018, 11:55 AM »
Hi Alan, sorry to drag this up but I've just bought some that need restoring. How do you get the locking lever and spring off and back on - do you need a press or something?

Offline kalex

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Re: Dia Compe Tech 7 restoration
« Reply #12 on: May 07, 2018, 12:48 PM »
Blimey how a year flys by, I thought this was a recent thread until I saw the date.

Offline tfi_friday

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Re: Dia Compe Tech 7 restoration
« Reply #13 on: May 09, 2018, 01:42 PM »
Hi Alan, sorry to drag this up but I've just bought some that need restoring. How do you get the locking lever and spring off and back on - do you need a press or something?

The spring is easy to remove, just pop if the start of the sprint over the lip of the locking button and move the spring round and around the locking button till it comes off.

The locking button can be painted/powdered without removal.


The lever is bolted in place... not a rivet like Tech 3


Offline brimfull

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Re: Dia Compe Tech 7 restoration
« Reply #14 on: May 09, 2018, 10:51 PM »
Hi Alan, sorry to drag this up but I've just bought some that need restoring. How do you get the locking lever and spring off and back on - do you need a press or something?

The spring is easy to remove, just pop if the start of the sprint over the lip of the locking button and move the spring round and around the locking button till it comes off.

The locking button can be painted/powdered without removal.


The lever is bolted in place... not a rivet like Tech 3

Thanks dude  :nuts:  fistblump

Offline Taipan

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Re: Dia Compe Tech 7 restoration
« Reply #15 on: May 10, 2018, 05:23 PM »
Is that a pair of your refurbished levers on ebay for £350  :shocked:

Offline PHIL9HUF

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Re: Dia Compe Tech 7 restoration
« Reply #16 on: May 11, 2018, 01:11 AM »
Great job Alan  :daumenhoch:
Didn't they only make them for 1 year ?
Hence not too many about that makes them expensive !

Offline tfi_friday

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Re: Dia Compe Tech 7 restoration
« Reply #17 on: May 12, 2018, 06:41 PM »
Is that a pair of your refurbished levers on ebay for £350  :shocked:

Nope all mine in use :-)

£350??? Bloody Nora

Offline tfi_friday

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Re: Dia Compe Tech 7 restoration
« Reply #18 on: May 12, 2018, 06:42 PM »
Great job Alan  :daumenhoch:
Didn't they only make them for 1 year ?
Hence not too many about that makes them expensive !

Think it was a couple of years, but they broke at the clamp which also makes them a tough find
« Last Edit: May 13, 2018, 06:46 PM by tfi_friday »

Offline PHIL9HUF

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Re: Dia Compe Tech 7 restoration
« Reply #19 on: June 08, 2018, 01:06 AM »
There is a nos pair in an auction on eBay for over £900!


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