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RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  Shimano dx's
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Author Topic: Shimano dx's  (Read 14314 times)

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Offline Dannywhac

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Re: Shimano dx's
« Reply #50 on: April 16, 2012, 07:03 PM »
Dan.. You pure iz Jedi bredrin!!!

 ;D Power of da force....

All you gotta do afterwards though is remember not to chew the end of the pencil......
"Listen. I don't care what you say. Chlamydia is a soup." (Phelps, L. 2000)

Offline Discostu

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Re: Shimano dx's
« Reply #51 on: April 16, 2012, 07:19 PM »
So the conclusion is you can't weld alloy to steel unless you have a chemical coating!   That's what I said.  :daumenhoch:

Offline Dannywhac

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Re: Shimano dx's
« Reply #52 on: April 16, 2012, 07:22 PM »
So the conclusion is you can't weld alloy to steel unless you have a chemical coating!   That's what I said.  :daumenhoch:

You have to use the word 'hence' if anyone's going to reply seriously in this thread  ;D

(I bet Olly's loving this derailing - sorry Olly).
"Listen. I don't care what you say. Chlamydia is a soup." (Phelps, L. 2000)

Mdbh

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Re: Shimano dx's
« Reply #53 on: April 16, 2012, 08:58 PM »
Just for the record... as I feel very strongly about this having spent 18 year of my life studying and working in the field... if the question is "Can I weld aluminum to steel with the GMAW or GTAW welding process?" Then the answer is while aluminum can be joined to most other metals relatively easily by adhesive bonding or mechanical fastening, special techniques are required if it is to be arc welded to other metals such as steel.  Very brittle intermetallic compounds are formed when metals such as steel, copper, magnesium or titanium are directly arc welded to aluminum.  To avoid these brittle compounds, some special techniques have been developed to isolate the other metal from the molten aluminum during the arc welding process.  The two most common methods of facilitating arc welding of aluminum to steel are bimetallic transition inserts and coating the dissimilar material prior to welding.

Take for example Bimetallic Transition Inserts.  Bimetallic transition materials are available commercially in combinations of aluminum to such other materials as steel, stainless steel and copper.  These inserts are best described as sections of material that are comprised of one part aluminum with another material already bonded to the aluminum.   The method used for bonding these dissimilar materials together, and thus forming the bimetallic transition, are usually rolling, explosion welding, friction welding, flash welding or hot pressure welding, and not arc welding.  The arc welding of these steel aluminum transition inserts can be performed by the normal arc welding methods such as GMAW or GTAW.  One side of the insert is welded steel-to-steel and the other aluminum-to-aluminum.  Care should be taken to avoid overheating the inserts during welding, which may cause growth of brittle intermetallic compounds at the steel-aluminum interface of the transition insert.  It is good practice to perform the aluminum-to-aluminum weld first.  In this way, we can provide a larger heat sink when the steel-to-steel welding is performed and help prevent the steel aluminum interface from overheating.  The bimetallic transition insert is a popular method of joining aluminum to steel and is often used for producing welded connections of excellent quality within structural applications.  Such applications as attaching aluminum deckhouses to steel decks on ships, for tube sheets in heat exchangers that have aluminum tubing with steel or stainless steel tube sheets, and for producing arc welded joints between aluminum and steel pipe lines.

You could also try coating The Dissimilar Material Prior To Welding where a coating can be applied to steel to facilitate its arc welding to aluminum.  One method is to coat the steel with aluminum. This is sometimes achieved by dip coating (hot dip aluminizing), or brazing the aluminum to the surface of the steel.  Once coated, the steel member can be arc welded to the aluminum member, if care is taken to prevent the arc from impinging on the steel.  A technique must be used during welding to direct the arc onto the aluminum member and allow the molten aluminum from the weld pool to flow onto the aluminum coated steel.  Another method of joining aluminum to steel involves coating the steel surface with silver solder.  The joint is then welded using aluminum filler alloy, taking care not to burn through the barrier layer of silver solder.  Neither of these coating type joint methods are typically depended upon for full mechanical strength and are usually used for sealing purposes only.

Now that took ages to type so I hope you got it all  :daumenhoch:
Edd I'm not gona lie I've not read this I lost interest after the 1st 2 lines!, so I'm gone glue them back together with s$$$k lol is that ok to say that with the dollar sign or not? You said not to swear, anyway I might just sling these pedals in the bin coz it feels like ba$$ ache doing resto work!!:)

Offline Discostu

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Re: Shimano dx's
« Reply #54 on: April 16, 2012, 09:05 PM »
Olly I can't believe you said gentlemans relish!!  ??? :-X :police: :LolLolLolLol:

Mdbh

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Re: Shimano dx's
« Reply #55 on: April 16, 2012, 09:17 PM »
Olly I can't believe you said gentlemans relish!!  ??? :-X :police: :LolLolLolLol:
I didn't I said s$$$k you made your own mind up :LolLolLolLol:

Offline kev-s

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Re: Shimano dx's
« Reply #56 on: April 16, 2012, 11:55 PM »
dont sling em in the bin, bring em to me!!!


i can remove the pins, i clamped the pins in mine in my model vice then tapped the pedal out of the pin then replaced the pin with one out of another pedal

Mdbh

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Re: Shimano dx's
« Reply #57 on: April 17, 2012, 08:40 AM »
dont sling em in the bin, bring em to me!!!


i can remove the pins, i clamped the pins in mine in my model vice then tapped the pedal out of the pin then replaced the pin with one out of another pedal

you got 15 pins I can have Kev? Il let you touch my bum again!

Offline kev-s

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Re: Shimano dx's
« Reply #58 on: April 17, 2012, 09:26 AM »
lol all i did was remove the non allen key pins out of a dmr v8 pedal and used those

i think you will find you were placing your bum on my hand!

Offline BENDYCAT ELEVENTEEN

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Re: Shimano dx's
« Reply #59 on: April 17, 2012, 09:57 AM »
Well that was a great read  ;D  one picture of a hand and pencil - bums being touched

right get back on track as i have a couple of sets that need doing and i want to know how they turn out  ;D

so Hence get on with it  :knuppel2:

and get some pic's up - it's like Stevie wonder story time here  ;D

What is best for getting the last bits of paint off of the pedals - was it oven pride, and keeping an eye on it as it will melt them if not careful ?

I want to see the effect of the glass paint and how it looks - i know that you do get a build up around the pins !

cheers B  :angel:
The Devil is away on business, I'm having to step in for him - How can I make your day Hell !!!

Offline kev-s

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Re: Shimano dx's
« Reply #60 on: April 17, 2012, 09:57 AM »
olly the other option is to remove a pin and take it cp fastenings and see if they can find anything to match it, try asking them for engineering roll pins

also have a look on vintagebmx.com for a guy called ted carl, he done a full dx resto, removed the pins, mirror polished the bodys and fitted new pins etc... very in depth guide on how to do it, i used it when i did my resto

Offline kev-s

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Re: Shimano dx's
« Reply #61 on: April 17, 2012, 09:59 AM »
bendy, to remove the last bits of paint use a dremel :daumenhoch:

Offline BENDYCAT ELEVENTEEN

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Re: Shimano dx's
« Reply #62 on: April 17, 2012, 10:04 AM »
Kev can oven pride be used at all on them ? - not talking of leaving them in for long as i know it works about 2-10 mins in !
The Devil is away on business, I'm having to step in for him - How can I make your day Hell !!!

SaMAlex

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Re: Shimano dx's
« Reply #63 on: April 17, 2012, 10:06 AM »
Enough about pins for a moment. Does anyone have any of the re-pop end caps? My pedals are OK but the end caps are mashed where I took them out to swap the spindles round for LHD  :crazy2:

Better still, does anyone have any used, but OK end caps? A brand new set would look a bit out of place on my used bodys

Offline kev-s

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Re: Shimano dx's
« Reply #64 on: April 17, 2012, 10:06 AM »
no there not anno, paint stripper and a dremel will do the job :daumenhoch:

Offline kev-s

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Re: Shimano dx's
« Reply #65 on: April 17, 2012, 10:08 AM »
alex pm rakas or joe on here, to give em the worn look, rough em up on a brick wall and smear a bit of dirt and grease on em and wipe off :daumenhoch: :daumenhoch:

Offline ED209

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Re: Shimano dx's
« Reply #66 on: April 17, 2012, 10:09 AM »
You can't weld steel to alloy.  :daumenhoch:

Alloy melts at a much lower temperature against steel.

Nope.. you said "You can't weld steel to alloy" and you can  :laugh:



"Do not go gentle into that good night,
Old age should burn and rave at close of day;
Rage, rage against the dying of the light."

Dylan Thomas

WANTED : Victor DX 9/16 spindle or pedal

Offline ED209

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Re: Shimano dx's
« Reply #67 on: April 17, 2012, 10:10 AM »
Enough about pins for a moment. Does anyone have any of the re-pop end caps? My pedals are OK but the end caps are mashed where I took them out to swap the spindles round for LHD  :crazy2:

Better still, does anyone have any used, but OK end caps? A brand new set would look a bit out of place on my used bodys

might be able to help you there Alex as I need a pukka new pair for my DX so can flow you the others I have if you thought they were good enough... will do a pic  :daumenhoch:
"Do not go gentle into that good night,
Old age should burn and rave at close of day;
Rage, rage against the dying of the light."

Dylan Thomas

WANTED : Victor DX 9/16 spindle or pedal

SaMAlex

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Re: Shimano dx's
« Reply #68 on: April 17, 2012, 10:14 AM »
might be able to help you there Alex as I need a pukka new pair for my DX so can flow you the others I have if you thought they were good enough... will do a pic  :daumenhoch:


I like the sound of that, thanks.  :daumenhoch:

Im sure we can work out some kind of a swap  ;)

Offline ED209

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Re: Shimano dx's
« Reply #69 on: April 17, 2012, 10:20 AM »
alex - will pm ya a pic in a sec  :)
"Do not go gentle into that good night,
Old age should burn and rave at close of day;
Rage, rage against the dying of the light."

Dylan Thomas

WANTED : Victor DX 9/16 spindle or pedal

Mdbh

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Re: Shimano dx's
« Reply #70 on: April 17, 2012, 11:25 AM »
Mine are on there way from joe £15 shipped!

Mdbh

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Re: Shimano dx's
« Reply #71 on: April 17, 2012, 11:33 AM »
You can't weld steel to alloy.  :daumenhoch:

Alloy melts at a much lower temperature against steel.

Nope.. you said "You can't weld steel to alloy" and you can  :laugh:
Don't think stu has smelt kevs breath, that could weld anything together! :LolLolLolLol:




Offline Discostu

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Re: Shimano dx's
« Reply #72 on: April 17, 2012, 11:39 AM »
 :LolLolLolLol:

Mdbh

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Re: Shimano dx's
« Reply #73 on: April 17, 2012, 11:56 AM »
olly the other option is to remove a pin and take it cp fastenings and see if they can find anything to match it, try asking them for engineering roll pins

also have a look on vintagebmx.com for a guy called ted carl, he done a full dx resto, removed the pins, mirror polished the bodys and fitted new pins etc... very in depth guide on how to do it, i used it when i did my resto
Link please Kev?

Offline dordymush

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Re: Shimano dx's
« Reply #74 on: April 17, 2012, 12:43 PM »
you aint gonna win stu so give up man  ;D ;D
dave the bmxing gypo


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