Cortina Lotus Mk1/2 (2000E) 5 Speed gearbox

Cortina Lotus Mk1/2 (2000E) 5 Speed gearbox

Author
Discussion

jwoch

Original Poster:

4 posts

172 months

Monday 21st January 2008
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Does anyone know who might have produced a 5 speed dog engagement gearbox which fits into the 'bullet'/Mk 1 casing?

Sam_68

9,939 posts

222 months

Monday 21st January 2008
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I'm pretty sure there's no such animal.

Lots of people undertake 5-speed conversions on Lotus Elans; there are a variety of solutions (Alfa, Isuzu, modified Ford MT75) which would be unneccesary if anyone did a 5-speed gearset to fit within the existing 'bullet' casing.

jwoch

Original Poster:

4 posts

172 months

Monday 21st January 2008
quotequote all
Sam
The Lotus Cortina Register forum has just come up with the answer:
In 1966/67, Hewland produced a five speed Cortina gearbox - later to be built and sold by C.T.Wooler ( Engineers ) of Wembley.

The box was developed for race use and resulted from a demand from Cortina, Cortina Lotus and Lotus Elan drivers who used their cars for motorsport. They found that the gap between second and third on the standard box made life a little awkward when coupled to their tuned and often "peaky" engines.

Using the original cast-iron gearbox casing, the Hewland engineers went about the task of fitting five gears whilst retaining the format of a three shaft, constant mesh box. Space within the casing only allowed for a face-dog, non-synchromesh gear engagement system to be used. The lack of synchromesh is compensated by the extremely close ratios of the gears and provided an astoundingly fast gearchange, ideally suited to racing. Hewland used helical gears ( A first for Hewland ) as a compromise between the much needed strength for competition and a reasonably quiet operation for everyday road use.


Sam_68

9,939 posts

222 months

Monday 21st January 2008
quotequote all
But is it still available?? It's not even listed on the history page of Hewland's website, which suggests it was a 'special proiject' with no more than a handful built.

Why do you need a 5 speed box in the first place? If it's to provide relaxed high-speed cruising, then you'll probably find that even if they are available, the Hewland gear clusters will give direct drive in fifth (ie. the same as the standard box), if they were intended for race use, so won't offer any real advantage.

jwoch

Original Poster:

4 posts

172 months

Monday 21st January 2008
quotequote all
Sam
I've got one of the said boxes but didn't know what it was. I think we've now answered the question. It's in superb condition and would clearly suit a classic racer (not something I do). Selling it is probably my best option.
JW

Sam_68

9,939 posts

222 months

Monday 21st January 2008
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Ah...ok. Should be quite valuable, if you find the right buyer!

twin cam mark

54 posts

121 months

Saturday 11th August 2012
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hi, do you still have the 2000e box. mark 07976 329622.

twin cam mark

54 posts

121 months

Friday 29th March 2013
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still wanting one of these if anyone can help or does anyone know this gent who has one.please pm me.

Sardonicus

18,376 posts

198 months

Saturday 30th March 2013
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I take it this is the 3 rail box and not the single rail version your talking ?

twin cam mark

54 posts

121 months

Sunday 31st March 2013
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yes it is, dont want to start cutting and messing about so after a nice 3 rail lotus box with the aloy tail. any help to find one much appreciated. mark

mcstig

1 posts

108 months

Friday 3rd May 2013
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hi new to this site ,
but would like to reply to this item ,
a hewland 5 speed box is in the hands of a chap in scotland , however it has a cracked first gear
the box is at a friend in in the south of england , where it has been stripped and has been laser checked
the problem with those early hewland boxes , was the material used at the time , stuff was case hardened, but was like toffee the further down you go and very limited with the emount of power that can be used i think at the time it would have been 150bhp tops and had modified cast iron casings ,, so was quite heavy for what it was
however what is planned ,
new five speed gear kits built into mag casings , with some very hard steel still to be finalised , envolute dogs
reason for new mag casing, the 3 rail box is now a 4 rail , so a alloy casing from tony tompson or the use of cast iron wont work this has been greatly discussed , hewland had put a lot of effort into it at the time , , but i suppose because of being a very limited market , they probably lost money doing it then it would have been dropped the mag casing and gear sets , will be identical to hewland , abiet, from being made with better material , and some tweeks , power the box will easiy handle will arounf 230bhp ,
it will be tested in my caterham 7 , which has a alloy bdg bottom end 1794cc, with qed lotus twincam big port head , on 48s
and has 230bhp ,

twin cam mark

54 posts

121 months

Sunday 28th December 2014
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sorry for the very late reply on this topic that i,am very interested in indeed. the new box your planing sounds very exiting and i would like to know a bit more if you let me. engine wise were not a million miles away, i have a couple of options ,one a BRM twin cam and a novamotor 2tr twin cam. drop me a email and i,ll send you some pics. mark.dcs1@btconnect.com

jabingb

4 posts

246 months

Saturday 2nd December 2017
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This is a pretty old thread but I have one of these boxes and am considering selling it. I've had it for 35+ years, was told at the time it was a Hewland/derivation, 5th is definitely an o/d, ~ 0.80. Dog engagement, different shifter rail. Dave Bean had one of these and provided additional insight, a very low 1st, gear, just over 3.0.



jabingb

4 posts

246 months

Monday 8th January 2018
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I have been inspired by another Lotus enthusiast to look more closely at the box I have and realize that 5th is indeed 1:1, not an overdrive as I optimistically stated earlier. In fact, here is the shift pattern and approximate ratios, as eyeballed with vise grips on either end providing those estimates. I don't know if this is the early Hewland or the Wooler version that followed, any thought how to determine that?

johnsop

1 posts

141 months

Wednesday 24th January 2018
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Hi I have a friend who might be interested in buying the box. Do you have an email they can contact you on? He is based in uk. Thanks Pete.

AlfieTFlattie

1 posts

31 months

Monday 7th October 2019
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Resurrecting an old thread! I've got two of these Hewland/Wooler dog boxes. From the selector mechanism yours looks like the earlier Hewland type for the Anglia. The Wooler ones seem to have selector rods that look much more like the 2000E selectors except the reverse gear has had the U shape on the end cut down. However, I could well be wrong and the two styles depended on the final application and type of remote, if any. John

Dentman01

2 posts

52 months

Wednesday 2nd December 2020
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Hi
Do you still have 2 of those Hewland/Wooler Gearboxes & if so are you considering selling them, I need one for my Early 1300GT Vince Woodman BROADSPEED Escort?
Thanks in advance
Paul

jabingb

4 posts

246 months

Saturday 14th May
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Wow, this is really an old thread but I am seriously considering selling this rare bit. But it seems to be better suited for a lower hp car, maybe an Anglia?