DorsetStrider
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| posted on 21/3/05 at 11:44 PM |
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Lengthening drive shafts/axels
Ok guys time to pick your collective brains again.
I'm using an alfa 33 engine and droping it in the back of my chassis to create a middy.... is it possible or a good idea to lengthen the
driveshafts/axels that come from the gear box directly to the wheels? or better yet cut them off then afbricate new ones using the orignal alfa ends
at the gear box side but something else at the other thus enabling me to use a different set of wheel hubs?
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stephen_gusterson
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| posted on 21/3/05 at 11:58 PM |
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if you can find rorty's web site he describes a way to do it.
basically, you cut the shaft, and weld a sleeve over it of a significant length, 'rose welding' thro holes at several staggred points.
luego sell a sleeve for sierra shafts. you might find a pic on the net or from some helpful person on here.
bear in mind the shafts are hardened, and wont be as good after welding due to the softening. the shafts (if like the ford) are solid construction.
atb
steve
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James
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| posted on 22/3/05 at 08:45 AM |
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There's a company (mentioned in a post I read yesterday) that'll make you new, ultralight shafts for £70 (each?).
HTH,
James
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"The fight is won or lost far away from witnesses, behind the lines, in the gym and out there on the road, long before I dance under those lights."
- Muhammad Ali
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locoboy
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| posted on 22/3/05 at 09:34 AM |
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GB engineering in Nantwich?
ATB
Locoboy
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NS Dev
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| posted on 22/3/05 at 09:37 AM |
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That's the one I keep on about! Geoff berrisford supplies nearly all the autograssers in the uk with their driveshafts. He is an automotive
toolmaker/prototyper by trade, but does a lot of VERY nicely made "other bits" too.
I cannot fault any of the stuff I have had from him and I am very good at finding faults!!!
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locoboy
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| posted on 22/3/05 at 12:27 PM |
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I know its the one you go on about , thats how i know of it - never used him just heard of him ......................only via one source
though...............Mr Dev!
ATB
Locoboy
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NS Dev
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| posted on 22/3/05 at 12:41 PM |
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I think Mr Ison has dealt with him before and will back up my claims!
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locoboy
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| posted on 22/3/05 at 01:10 PM |
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I wasnt disputing your claims just letting you know that if you throw enough mud some will stick
If they can make parts to withstand grasser abuse then locost will be piece of P***.
Where do you find out about grasser events btw? wouldnt mind going along to have nosey.
ATB
Locoboy
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NS Dev
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| posted on 22/3/05 at 01:29 PM |
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I wasn't accusing, just wanted to show that I am not the only happy one with GB's work!
re. grassing events, first off the national website, www.national-autograss.co.uk,
the fixture list on there tells you about every event on up and down the country (most weekends there's something from now to October) and then,
depends on where in shropshire you are, but you really are at the heart of the sport in your area. North Shropshire Club's track is near
Whitchurch, Shropshire and Telford's track is at Crudgington near Newport (I went to college at Harper Adams just down the road from there!)
then there's loads of clubs in the Hereford and Leominster area, plus Evesham, Radford etc etc etc, spoilt for choice!!
I race mainly at Melton and Leicester's track, near Shepshed.
If you can make it, try and get down to the "MAP Open" (it's on the fixture list) at Evesham. I'll be there this year again,
this time hopefully not trashing my engine in the first race! There are usually around 600 cars entered in this event!!!!!!!!!!!!
low res pic of my car in action (ps. the car 2 behind me has a 6 ltr chevy in it!!!)
[Edited on 22/3/05 by NS Dev]
[Edited on 22/3/05 by NS Dev]
[Edited on 22/3/05 by NS Dev]
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turbodisplay
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| posted on 22/3/05 at 05:22 PM |
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I am using 4x4 sierra running gear with vectra hubs.
I tried welding two half of the shafts together, but found the heat of welding distorted the driveshafts.
I am now getting some hade up at a cost of £200 which is efffectively cost price through a local enginer. (it always helps to wait for until the
person can include your work with someone elses.)
Darren
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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Liam
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| posted on 22/3/05 at 07:44 PM |
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quote:
Originally posted by turbodisplay
I am using 4x4 sierra running gear with vectra hubs.
Just curious as to what you're building. Sounds interesting!
Liam
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Stu16v
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| posted on 22/3/05 at 08:45 PM |
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quote:
Shropshire and Telford's track is at Crudgington
Col could walk to there from his house...
Dont just build it.....make it!
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DorsetStrider
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| posted on 22/3/05 at 09:25 PM |
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I'm building a monster Liam...... but to gain experience first of all I'm building ...erm....something, not really sure how to describe
it.
Imagine the front end of a porsche boxter and the rear end of Angelina Jolie...sorry got distracted, the rear of a lamber. Alfa mid engine, one or two
of my own aerodynamic tweaks and hey presto we have either a smart sorts car or possibly much more likely the next turner prize winner.
Who the f**K tightened this up!
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stephen_gusterson
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| posted on 23/3/05 at 12:00 AM |
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im within a hairs breath of getting a shaft made up for my car, as i dont trust the cut n shut ive got.
will give em a call in next few days and let you know my experiences.
atb
steve
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NS Dev
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| posted on 23/3/05 at 08:20 AM |
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quote:
Originally posted by turbodisplay
I am using 4x4 sierra running gear with vectra hubs.
I tried welding two half of the shafts together, but found the heat of welding distorted the driveshafts.
I am now getting some hade up at a cost of £200 which is efffectively cost price through a local enginer. (it always helps to wait for until the
person can include your work with someone elses.)
Darren
I am using sierra 4x4 CV joints on my grasser in the pics on the prev page (L25, in my archive too)
To link them to the Vauxhall F20 gearbox, I sawed the astra 16v CV's in half where the cage is friction welded to the stubshaft forging,
machined a step onto the end of the stub forging, then sawed some sierra 4x4 rear stubs (the bits with the abs teeth on!) in two near to th 6 bolt
flange, then stepped that to be a press fit into the astra stub forging, pressed them together with my lathe tailstock and a rotating centre,
protected the lathe bed, then welded them together all the way around (after tacking in 4 places) whilst turning the chuck slowly by hand.
I now had a joint on an F20 'box to take a Ford CV. I then got a pair of shafts made by GB Engineering, at £70 apiece. These are heat treated
EN27 steel, rolled spline, with extended splines to allow extreme articulation (you only put a circlip on the outer end at each end, then the spline
can slide through the CV's at each end)
They are basically unbreakable in a "locost" application. (I have a welded diff in the grasser which puts huge stress on the shafts!)
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bigandy
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| posted on 23/3/05 at 11:32 AM |
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I'm going to be needing some custom driveshafts made up pretty soon. Ford outers (fiesta xr2) to toyota Mr2 (mk1, 4a-ge engine) inners, So
thanks for the lenk to GB engineering. They aren't too far from my Parents house.
A quick question though (aimed at NSDev!). Does the chap at GB engineering need the original shafts the replicate the ends, or can he work from
sketches, and knowing that the shafts need to fit a Mark2 fiesta XR2 outer cv joint?
Cheers
Andy
Dammit! Too many decisions....
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NS Dev
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| posted on 23/3/05 at 01:20 PM |
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Good question, I have no idea, give him a ring and see is the best idea. I have only had them made up with the sierra 4x4 spline, which he reffered to
as "Ford small CV spline". I think the big one is the cosworth one???
Don't know on the fiesta ones though, give him a call.
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bigandy
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| posted on 23/3/05 at 01:48 PM |
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I will do. I was under the impression that Ford splines were all basically the same. I know the outer CV joints on a fiesta XR2 are the same as some
of the Escort ones.
I quite like the sound of having custom made shafts, as I originally anticipated cut and shut ones!
Cheers
Andy
Dammit! Too many decisions....
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Minicooper
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| posted on 1/4/05 at 12:52 PM |
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Hello all,
Does anyone have a number for Geoff gb engineering
Cheers
David
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NS Dev
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| posted on 1/4/05 at 03:09 PM |
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Geoff Berrisford Engineering are on 01270 841081
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Bob C
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| posted on 1/4/05 at 03:39 PM |
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when I visited "classic conversions" they had some titanium halfshafts on show with ford splines.
I can't remember the cost but it was not too exhorbitant; minus a kilo of unsprung weight I reckon!
go on - you know you want some.....
BTW I cut&shut my mx5 halfshafts. I put a taper on the shaft and sleeves & hammered home prior to welding - they seem to have come out
straight. I also messed about grinding flats on and zig- zagging the welded edge.
They'll probably fall to bits first drive... I'll let on if they do (that'll be next year then)
Bob C
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NS Dev
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| posted on 2/4/05 at 08:38 AM |
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You may well be fine, but as a precautionary note, a friend of mine who races in autograss, had a car with a Vauxhall 2.0 8v engine in the back and
cut and welded driveshafts. The short side one failed at the weld on the first lap of a race (not the first race it did though!) and flailed around,
smashing the gearbox to pieces in the process. Pieces of the ally casting (Vauxhall F20 gearbox) were distributed all over the track by the time he
realised what had happened!!
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Rorty
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| posted on 8/4/05 at 02:28 AM |
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There's no doubt that billet axles are a nice option if your budget permits (and at 70 quid a pop, why wouldn't you!), but welded axles
have worked well for me too. I've run welded axles in everything from a 5.1 litre mid-engined Beetle to my off-road cars and I've never
experienced a breakage. It's all down to how they're assembled and welded. If you're welding is suspect, don't even
contemplating welding any axles. They have to be done properly and allowed to cool really slowly. otherwise you will only be making grenades.
Lobro and GKN (the makers of most of the world's CV joints) both list splined axle ends in their catalogues which are intended for welding into
tubing for custom length axles. There's nothing wrong with welding them, it just has to be done by an experienced fabricator.
Cheers, Rorty.
"Faster than a speeding Pullet".
PLEASE DON'T U2U ME IF YOU WANT A QUICK RESPONSE. TRY EMAILING ME INSTEAD!
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