Technical > Roo Man's Room

mounting a solid front axle

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rooman:
Re the rear end upright plates the rule is that the weld has to wrap around the end of the plate not the plate around the frame. At least one NHRA tech guy did (does?) not understand the rule and told a newby builder that the plate had to wrap around.
 The intent of the rule is to make the weld contiguous and avoid creating a stress riser at the edge of the plate. It is also a good idea to at least stitch weld the other side of the plate in the vicinity of the rear end mounting holes.

Roo

225digger:
i think i got it now , i guess i was over thinking the rule alittle bit for some reason ............after doing some studying on pics today i belive im going to go with the rectangular tubing with bungs , looks alot nicer and just better over all

denverflatheader:
225digger – I see you mention red, so I don’t mind adding info.  Here’s 3 pictures of 999 from 2011.  I too prefer looks of the torsion axle setup.  First picture shows my dropped chrome axle, 46 inches king pin to king pin.  I was told it’s old funny car axle, uses the 26 inch torsion setup with 5 inch arms.   It’s now my pretend torsion setup with 1.5 inch CM tube and 3/8 plate cut for 5 inch arms.  CM tube is tig welded to lower front frame rails, the 5 inch arms slide on CM tube.
   
Make sure you have 3 inch minimum ground clearance (check tech rules) with your wheels/tires in place and then tig weld 5 inch arms solid to 1.5 inch CM tube.  Front axle bolts on like normal torsion setup, you can adjust caster, but for most part axle is solid mounted.  Pictures easy to follow.  I’m thinking you can use with fed type steering too....

Extra tubing on front is for fuel tank I was designing to look like a grill shell.  Changed my mind as I decided shorter fuel line better.  Shotgun shell decoration above steering is to hide it as I didn’t like looks of rack & pinion, too modern for me.  Plus can add lead weight to shell if I need to.  Second picture is after media blasting, third picture is after powdercoating.  Any questions, please ask.  DF

slingshot383:
What's the wheelbase on that chassis?  Have you thought about using a Track T nose on it?

denverflatheader:
slingshot383 – has 222 inch wb.  I’d not thought about a track t front, but would consider it.  I’d have to see what it would take to make one out of aluminum, never tried that before… it would have to appeal to me too, or else no go.  I’m always open to suggestions, thanks.  DF

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