Lotus Elan

Handbrake bolt

PostPost by: davidj » Wed Mar 25, 2020 7:01 pm

Evening all,

I am fitting the handbrake onto my s3 from the pile of bits purchased from the previous owner. The hole in the bulkhead looks to be clearance for a 1/4" bolt while the mounting hole in the handbrake is for a 3/8" bolt. Am I missing something? This is a significant difference in size, and yes, I could use a large washer to secure the 1/4" nut in handbrake, but is is a little crude. Alternatively make the bulkhead hole bigger, but why was it not done in the first place?

Cheers.
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IMG_20200325_170250.jpg and
Bolts just to size. I will not actually be using these!
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PostPost by: oldelanman » Wed Mar 25, 2020 7:13 pm

The original fitment was a spire nut on the bracket and a large coarse threaded self-tapping type bolt with a washer under the head.

Handbrake pull lever mount.jpg and

Handbrake pull attachment.jpg and


Not shown in the Elan Parts List but in the Plus 2 list it's shown as RSTS1212 .... a number 12 self tapping screw 3/4" long. Presume it's the same for the 2 seater.

Handbrake lever har.png and
Roger
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PostPost by: davidj » Wed Mar 25, 2020 10:59 pm

Ah! That explains it! I could not understand why there was such a difference in the hole size, and alarm bells started ringing. I guess it was designed for quick assembly, and a nut and bolt may be stronger.

Thanks very much. :D

David
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PostPost by: nigelrbfurness » Thu Mar 26, 2020 6:03 pm

I think it is a safety issue, the spire nut and "self tapping" bolt are much less likely to vibrate loose than a standard nut and bolt and the assembly can be fitted and tightened from above just about single-handed. If you use a nut and bolt, be sure to use a nyloc nut.
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PostPost by: Mazzini » Thu Mar 26, 2020 6:48 pm

Good luck getting a spanner inside the bracket.
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PostPost by: davidj » Fri Mar 27, 2020 9:40 am

Yes, I have not tried, but getting a spanner in may be difficult! I have never really trusted spire nuts in anything more important than trim, and would much prefer to use a nyloc nut and bolt. However, that is my view, which may be incorrect, and in this case I will use a spire nut as it looks to a proven technique.

Cheers.
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PostPost by: Mazzini » Fri Mar 27, 2020 9:58 am

I've never seen a handbrake pull through the GRP, it may have happened, but I've never seen it.
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PostPost by: Vaughan » Fri Mar 27, 2020 11:32 am

you could fit a rivnut/nutsert.
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