944 alloy arms

[Andy Sykes]

has anybody narrowed a set of pre 87 arms im sure ive seen 1 set done before looking for pros and cons

cheers andy

[StrokerMcDell]

Hi Andy,

I think its quite easy ......

 

Jason started off by buying my pre 87 ally arms and finished off with the back end looking like this.

[Andy Sykes]

Cool thanks that's given me a few ideas watch this space

[Jay Aldred]

Hi Andy,

I think its quite easy ......

 



Jason started off by buying my pre 87 ally arms and finished off with the back end looking like this.

Its moved on a bit,





This is a 8 1/2 ich rim under a stock arch

[Andy Sykes]

good work so is mine but imtrying fit it all in a stock body 

Knocked a jig up ready to narrow the porsche arms



right there cut and tacked ready to be checked tmw fingers crossed ive got it right













mock up what my plan is







cheers andy

[Jay Aldred]

I have to say thats quite impressive I had a set of those porsche ally a-arms first off before I took te route I have, didn`t consider cutting them, wasn`t brave enough and I have never tried welding ally. Do you loose any depth narrowing them or geomtrically do they stay the same just narrower?.

I love they way people solve problem in so many different ways and end up with the same result, how much narrower have you gone?.

cheers

Jay..

[Andy Sykes]

I have to say thats quite impressive I had a set of those porsche ally a-arms first off before I took te route I have, didn`t consider cutting them, wasn`t brave enough and I have never tried welding ally. Do you loose any depth narrowing them or geomtrically do they stay the same just narrower?.

I love they way people solve problem in so many different ways and end up with the same result, how much narrower have you gone?.

cheers

Jay..

cheers, geometrically they stay the same thats why i made the jig, i can tig but im not good enough to takle these i have some mates in a unit around the corner from me who are the dogs when it comes to welding so they are doing the welds on the arms when ive got everything in place. So far i have taken 50mm out but that may change when i have mocked it all up

I made some solid mounts today fromthis then welded the to the G50 its not going to move now lol



G50 back in





cheers andy

[Andy Sykes]

first stage of welding completed







cheers andy

[dannyboy]

no bird shit there m8 looks good 

[Andy Sykes]

no bird shit there m8 looks good 

cheers thanks

slight change in plan im mounting the ladder bar to were thw spring plate attched to









ive got to shorten the drive shafts or find some the fit ive ordered some coilovers with a few differnt springs so i can expriment with spring rates ect


cheers andy

[TexasTom]

Andy,
Have you considered welding some flat aluminum plates to your control arms to locate the ladder bars? That way, you could capture rod ends at the top and bottom with thru-bolts, use steel rods for the ladder bars for strength, and everything would be adjustable.
Looks like a fun project ...
TxT

[Andy Sykes]

Andy,
Have you considered welding some flat aluminum plates to your control arms to locate the ladder bars? That way, you could capture rod ends at the top and bottom with thru-bolts, use steel rods for the ladder bars for strength, and everything would be adjustable.
Looks like a fun project ...
TxT

i hadnt untill then sounds a better plan than mine watch this space

cheers andy

[StrokerMcDell]

Not completely sure what Tom means but although mine is S/A it can maybe be done in a similar way.

[Andy Sykes]

so here is the plan 

 looks like this will be solid when its welded





cheers andy

[Jay Aldred]

so here is the plan 

 looks like this will be solid when its welded





cheers andy

Andy thats spot on and will ork very well, that was my plan before I built the a-arms from scratch.

[Andy Sykes]

cheers :)bit more fettling this afternoon after my trip to Hull and Bradford

i think you can see what happening here



Jon the master welder on the case welding up the arms fully i dont trust myself with this bit yet on alloy











were getting there now im going to shorten  axles  this week too

cheers andy

[Frallan]

Really like what you are doing.
I am sure it will work well.

Now one suggestion for building further on the safety factor would be to do a steel end plate for the Uniball to thread in to a steel attachment plate with three four bolts to the arm, instead of aluminium.

[Jay Aldred]

Really like what you are doing.
I am sure it will work well.

Now one suggestion for building further on the safety factor would be to do a steel end plate for the Uniball to thread in to a steel attachment plate with three four bolts to the arm, instead of aluminium.

Unless you use T6 which is compaable to steel, coming to gether well, oh and I envy the quality of the welding, I can tig weld steel but have had little success on aluminium, all down to the machine no doubt and practice.

[Andy Sykes]

bit more done

cut and weled a 6mm plate for the uniball to bolt to i will make an alumium cap tmw

 



shock mounts still line up





cheers andy

[Andy Sykes]

 after some frantic rushing about this afternoon talking to Quaife they pointed me in the direction of R&N enginnering who make one offs for them so im know having complete new shafts made next week they seamed very helpful

so cut up a 944 shaft



944 is the soild one G50 is hollow



measured the new shaft lengh and TIG welded up



trial fitted







Ive posted the cut and shut shaft off to have two machined but 1 has to be 15mm shorter

cheers andy

[Bruce]

944 is the soild one G50 is hollow

That is very interesting, I didn't know they were hollow.  Can you measure the ID and OD?  And the OD of the 944 shaft?

[Andy Sykes]

no probs the the OD of the G50 is 29mm ID is 9mm the 944 OD is 26mm

I spent most of the afternoon modifying Mr Porsches parts i think ive made it work







cheers andy

[Bruce]

no probs the the OD of the G50 is 29mm ID is 9mm the 944 OD is 26mm

Thanks for that info.
After a few quick calculations, the G50 shafts are 53% stronger, while weighing only 12% more.

[Andy Sykes]

thats great info i think i will get my new shafts driiled to match the G50 shafts

cheers andy

[Zach Gomulka]

Very impressive work here. Well done!!

[Bruce]

thats great info i think i will get my new shafts driiled to match the G50 shafts

Just remember, a drilled shaft is always weaker than a solid shaft of the same OD.  The BIG difference is the weight.  With the G50 shaft, the 9mm hole reduces it's strength by only 0.9%.  The 9mm hole reduces the shaft's weight by almost 10%

[Zach Gomulka]

Where do you find someone who can drill that??

[Frallan]

Now one suggestion for building further on the safety factor would be to do a steel end plate for the Uniball to thread in to a steel attachment plate with three four bolts to the arm, instead of aluminium.
[/quote]

Unless you use T6 which is compaable to steel, coming to gether well, oh and I envy the quality of the welding, I can tig weld steel but have had little success on aluminium, all down to the machine no doubt and practice.

What I remember from my years building airplanes, T6 is not a good idea to weld on. Long time ago so I might remember wrong.
Should it not be normalized or T3 prior to welding and then treated to T6?

[Bruce]

Where do you find someone who can drill that??

They get drilled on a lathe.  It's not difficult, it's just slow going.

[Jay Aldred]

Now one suggestion for building further on the safety factor would be to do a steel end plate for the Uniball to thread in to a steel attachment plate with three four bolts to the arm, instead of aluminium.

Unless you use T6 which is compaable to steel, coming to gether well, oh and I envy the quality of the welding, I can tig weld steel but have had little success on aluminium, all down to the machine no doubt and practice.

What I remember from my years building airplanes, T6 is not a good idea to weld on. Long time ago so I might remember wrong.
Should it not be normalized or T3 prior to welding and then treated to T6?
[/quote]

With the end plate no welding required otherwise you are right it would need to be normalised to return the granualar structre back to it orginal state.