zilspeed
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| posted on 2/11/08 at 05:31 PM |
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Reverse ?
Check out the two pics below and give me your thoughts 
Just had this part waterjet.
Apoligies for being a crap photographer.
Ths part has in internal spline the same as a MKII escort clutch plate. The PCD of the four bolt holes are the same as a MKII escort propshaft.
[Edited on 2/11/08 by zilspeed]
 
Rescued attachment adapter.JPG
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zilspeed
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| posted on 2/11/08 at 05:32 PM |
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Adapter fitted to shaft.
 
Rescued attachment adapter on shaft.JPG
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Ivan
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| posted on 2/11/08 at 05:43 PM |
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What is it?
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zilspeed
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| posted on 2/11/08 at 05:47 PM |
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I was kinda hoping the info about the dimensions would lead the reader to working that out for themselves 
Ok, a bit more info.
Most BECs have a sprocket adapter which has the same PCD as my adapter above.
That means that you could run a short driveshaft between them....
In the second pic, it is mounted to the input shaft of an escort gearbox.
Which costs about £30, which I believe is Locost.
Is that enough info ?
[Edited on 2/11/08 by zilspeed]
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blakep82
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| posted on 2/11/08 at 05:49 PM |
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run a normal cec gearbox?
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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zilspeed
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| posted on 2/11/08 at 05:50 PM |
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quote:
Originally posted by blakep82
run a normal cec gearbox?
He shoots !!
He scores !!
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blakep82
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| posted on 2/11/08 at 05:53 PM |
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understand i wrote that before you edited you last post
hmm, could you then use BOTH the BEC gearbox,and CEC gearbox to get a bigger range of gears? possible a longer top gear, better fuel economy etc?
(you'd need another clutch in the escort box i guess)
ha ha and after coozer got all that abuse yesterday for saying something about using a CEC gearbox for reverse on a BEC 
[Edited on 2/11/08 by blakep82]
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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Paul TigerB6
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| posted on 2/11/08 at 05:58 PM |
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Utterly pointless IMHO. Why would you want to run a CEC gearbox just to gain a reverse gear?? £30 for the gearbox, plus how much for the propshafts to
connect it to the diff??
Stick with an electric reverse i recon
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zilspeed
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| posted on 2/11/08 at 06:01 PM |
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quote:
Originally posted by blakep82
understand i wrote that before you edited you last post
hmm, could you then use BOTH the BEC gearbox,and CEC gearbox to get a bigger range of gears? possible a longer top gear, better fuel economy etc?
(you'd need another clutch in the escort box i guess)
No, you don't need a clutch for the escort box, and you would neverdream of shifting gears with the car box on the move. The bike box is a dog
engagement ultra close ratio set. The escort one just isn't !
But it does give a choice of final drives.
And a REVERSE.
Before anyone brings up the weght of the box, it's around 30kg.
First of all, I really don't think that'll make that much difference to me. I'm not that good a driver.
Secondly, I have been on a diet in recent months (as everyone who know me willl confirm - I've bored them all to death).
I am personally 54lbs lighter than I was in June.
That's 25kg.
If I can lose another 5kg between now and next spring we're equal
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zilspeed
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| posted on 2/11/08 at 06:05 PM |
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quote:
Originally posted by Paul TigerB6
Utterly pointless IMHO. Why would you want to run a CEC gearbox just to gain a reverse gear?? £30 for the gearbox, plus how much for the propshafts to
connect it to the diff??
Stick with an electric reverse i recon
Completely take your point about the cost of the propshafts. I'm reckoning on £150 for the pair.
I just don't fancy an electric reverse very much. They may make the car go backwards after a fashion, but it's a bit of a compromise for
me.
Good job we're all different eh
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Ivan
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| posted on 2/11/08 at 06:55 PM |
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At least you are thinking
However weight isn't the only loss - there will be around 5% or more mechanical losses what with extra bearings spinning, extra innrtia to
overcome and things thrashing around in oil, although you might be able to minimise gearbox oil depth.
One thing, you could have a low range by using 3rd gear in the CEC box as well
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mark chandler
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| posted on 2/11/08 at 08:24 PM |
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Its been tried before, you use the gearbox the wrong way around, power fed in from the back and get the smallest lightest 4 speed box you can find.
You now have reverse and 3 overdrives if 4th is 1-1 ratio so can use a cheap diff.
Robin reliants, Suzuki SJ410 jeeps etc have very little CEC boxes.
The downside is weight, the killer of anything like this.
Rover 90 (the really old ones) had tiny aluminum cased boxes, also used in Series landrovers infront of the Transfer box, these still appear on Ebay
for £15, rebuild parts are also very cheap so this would be my choice.
Regards Mark
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daviep
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| posted on 2/11/08 at 09:03 PM |
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My first thought was that the gearbox input shaft is not designed to run un-supported.
Davie
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mark chandler
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| posted on 2/11/08 at 09:15 PM |
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Could not agree more, the input shaft allows for a certain amount of mis-aligment so you would need to chop the front off the bell housing, flat
plate in front and include a support bearing.
A whole lot off effort, I prefer to push!
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zilspeed
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| posted on 2/11/08 at 10:09 PM |
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Yes - I also totally agree.
Bearing block is to go in behind the shaft.
This is easily supported on a cylindrical housing.
This will ensure that the shaft is fully supported - as it should be.
I know, I know, it's a bit of work.
But I'm a bit thick headed some times. I have started all of this, so I must break with the habits of a lifetime and finish it. Only then can I
move onto something else.
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