Twist Grips

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simon.holyfield
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Twist Grips

Postby simon.holyfield » Mon Aug 12, 2019 3:29 pm

Folks,

Twist grip lengths. I have some horrible repro rubber grips, about 5" long on my civilianised W/NG which I am about to ditch (the grips, not the W/NG); my 1951 SQ4 has original Amal grips of about the same size.

Various canvas grips I've seen, used after 1942, appear to be about 6" long and obviously must have a longer twist grip as well. Prior to 1942, the parts books appear to illustrate rubber grips on longer twist grips, maybe 6" or so. some earlier grips I've seen appear to be even longer.

So is it fair to say, long 6" or more grips were fitted pre war, and short 5" grips post war?
cheers

Simes

'51 Square Four,
'58 Huntmaster,
'42 W/NG, '78 CX500
http://ariel-square-four.blogspot.com

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alan.moore
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Re: Twist Grips

Postby alan.moore » Mon Aug 12, 2019 11:49 pm

Have you had a look at this post i made in the WNG section

viewtopic.php?f=48&t=9445

I picked up some 6 inch long rubber grips at the Stanford autojumble recently but have been unable to see any for sale online anywhere. I lengthened a shorter amal alloy twistgrip to match the 6" rubbers as I could not find a longer one

Cheers
Alan
1939 VH Redhunter;1942 RN WNG;1951 Triumph 6T Thunderbird;1970 BSA B175 Bantam;1986 Yamaha SRX600 single
http://cloggymoore.wix.com/triumph-pre-unit-6t

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simon.holyfield
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Re: Twist Grips

Postby simon.holyfield » Tue Aug 13, 2019 7:49 am

I'd forgotten about that post Alan, though having read it again I realise I have seen it before.

I'm pleased to see you have been down the same road!
cheers

Simes

'51 Square Four,
'58 Huntmaster,
'42 W/NG, '78 CX500
http://ariel-square-four.blogspot.com

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brenton.roy
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Re: Twist Grips

Postby brenton.roy » Tue Aug 13, 2019 8:19 am

It's interesting how quickly technology changes, particularly something as common as a throttle.
My 27 has a throttle lever, as with most previous models (Air and Mixture levers).
I think most of the 30's models, well 1" bar models anyway, had the longer travel internal type throttle, with a different type of rubber grip. I know at least until 1937 does.
Red Hunters may have had a Bowden quick action twist grip from the early 30's - but there's no mention in the catalogues (that I can see at least).
So, it's possible (I could be very wrong) that your W/NG was the first Ariel model with a clamp on throttle?
'51,'56 Squares, '48 VH, '27 Model C, R67/2, Mk IV Le Mans, '06 Super Duke and Ariel projects.

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alan.moore
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Re: Twist Grips

Postby alan.moore » Tue Aug 13, 2019 3:32 pm

The part number for the clamp on throttle first appears in the 1939 parts lists (listed as twist grip quick action) has a '-39' suffix (6430-39) so I think that is when it came in. It is listed as 7/8 inch so would match up with the 1" to 7/8 inch tapered bars and the parts number for those bars states that when ordering put a Q at the end of the parts number (6400-34Q) so that must signify a tapered bar without the slot for the earlier throttle assembly?
1939 VH Redhunter;1942 RN WNG;1951 Triumph 6T Thunderbird;1970 BSA B175 Bantam;1986 Yamaha SRX600 single
http://cloggymoore.wix.com/triumph-pre-unit-6t

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paul.jameson
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Re: Twist Grips

Postby paul.jameson » Wed Aug 14, 2019 7:37 pm

The handlebar drawing for the 1" handlebars (D9/186) has slightly different slotting arrangements for 1933 and 1934. But it also has a note to the effect that the handlebar used for the 1934 VH is identical to the standard bars - but without the slot and hole needed for the straight pull throttle. So it would seem that the "twist grip quick action" throttle was in use by 1934.
Paul Jameson
36 4G, 37 VH, 53 ex ISDT KHA (project), 54 KH(A), Healey 1000/4 (project)
Former Machine Registrar & Archivist, General Secretary and Single Spares Organiser (over a 25 year period).
Now Archivist once more - but not Machine Registrar.

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alan.moore
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Re: Twist Grips

Postby alan.moore » Thu Aug 15, 2019 2:21 pm

Paul,
Looks like it. Twistgrips are not listed in the parts books until 1939 (same with Amal carb and Lucas electrical parts) so they must have been dealt with in Amal/Lucas parts lists prior to that
1939 VH Redhunter;1942 RN WNG;1951 Triumph 6T Thunderbird;1970 BSA B175 Bantam;1986 Yamaha SRX600 single
http://cloggymoore.wix.com/triumph-pre-unit-6t

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Re: Twist Grips

Postby nevhunter » Thu Aug 15, 2019 11:05 pm

The tapered bars are only on the early W/NG bikes as far as I know 1' otherwise. Nev


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