I've got to replace 2 of the cap screws/nuts that join the centre to the rims on my V5 simmons, and just wondering if anyone know what tension these should be tightened to?
Simmons Wheels cap screw tension
Started by
_jklumpp_
, Oct 26 2011 12:41 PM
6 replies to this topic
#3
ls2lxhatch
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Posted 28 October 2011 - 12:55 PM
#4
rodomo
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Posted 28 October 2011 - 04:42 PM
"Just got all my answers, from a 70 year old lotus club racer who owns a tyre and wheel shop.
Disassembly;
Cut sealer with a stanley knife, between the inner and outer rims.
Undo all titanium bolts and nuts, in a criss /cross fashion.
Heat the sealer with a heat gun to soften it.
Tap the rims apart with a rubber mallet, gently while applying heat.
Remove all sealer with a wire wheel on a drill, finish with a scotchbrite pad.
Clean with thinners."
Assembly;
Apply bead of silaflex to outer rim and join with inner wheel.
Apply bead of silafex to inner rim and join with outer rim/inner wheel assembly.
Put thread lock on all titanium bolts.
Tighten hand tight in a 12 oclock, 6, 3, 9 ect fashion.
Torque to 22 to 24 ft/lbs in the same 12, 6, 3, 9 criss cross method.
Apply small bead of silaflex to the outer and inner rim joint, smooth with finger.
Repeat a second bead 24 hours later.
From here:
http://www.austech.i...ing-wheels.html
Disassembly;
Cut sealer with a stanley knife, between the inner and outer rims.
Undo all titanium bolts and nuts, in a criss /cross fashion.
Heat the sealer with a heat gun to soften it.
Tap the rims apart with a rubber mallet, gently while applying heat.
Remove all sealer with a wire wheel on a drill, finish with a scotchbrite pad.
Clean with thinners."
Assembly;
Apply bead of silaflex to outer rim and join with inner wheel.
Apply bead of silafex to inner rim and join with outer rim/inner wheel assembly.
Put thread lock on all titanium bolts.
Tighten hand tight in a 12 oclock, 6, 3, 9 ect fashion.
Torque to 22 to 24 ft/lbs in the same 12, 6, 3, 9 criss cross method.
Apply small bead of silaflex to the outer and inner rim joint, smooth with finger.
Repeat a second bead 24 hours later.
From here:
http://www.austech.i...ing-wheels.html
#5
ls2lxhatch
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Posted 28 October 2011 - 04:50 PM
Sounds reasonable. 24 ft/lbs is the torque for a lubricated 8M x 1.25 12.9 socket head cap screw.
Althought the above does mention titanium bolts.
Althought the above does mention titanium bolts.
Edited by ls2lxhatch, 28 October 2011 - 04:53 PM.
#6
rodomo
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Posted 28 October 2011 - 04:55 PM
It was my immediate thought to when I first read the thread..............about 25ft/lb
#7
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Posted 28 October 2011 - 07:59 PM
"Just got all my answers, from a 70 year old lotus club racer who owns a tyre and wheel shop.
Disassembly;
Cut sealer with a stanley knife, between the inner and outer rims.
Undo all titanium bolts and nuts, in a criss /cross fashion.
Heat the sealer with a heat gun to soften it.
Tap the rims apart with a rubber mallet, gently while applying heat.
Remove all sealer with a wire wheel on a drill, finish with a scotchbrite pad.
Clean with thinners."
Assembly;
Apply bead of silaflex to outer rim and join with inner wheel.
Apply bead of silafex to inner rim and join with outer rim/inner wheel assembly.
Put thread lock on all titanium bolts.
Tighten hand tight in a 12 oclock, 6, 3, 9 ect fashion.
Torque to 22 to 24 ft/lbs in the same 12, 6, 3, 9 criss cross method.
Apply small bead of silaflex to the outer and inner rim joint, smooth with finger.
Repeat a second bead 24 hours later.
From here:
http://www.austech.i...ing-wheels.html
There is a problem with that method, the rims will not be air tight. No sealant is to be applied until AFTER the nuts are correctly torqued up. Simmons NEVER gave out any info on this, as too many people screwed it up. if not done correctly, it was common to see many of the bolts shear.
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