eznfrank
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| posted on 14/5/09 at 01:03 PM |
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Has anyone figured out a proper Locost reverse for IVA yet?
There seems to have been relatively little discussion on here about how us BEC folk are going to deal with the reverse requirement for IVA??
Personally I have no real intention of going backwards and would prefer to do without which is why I'm loathed to spend £350+ on anything the
various companies are offering.
So what are peoples thoughts? What is anyone else doing about it?
Or do I just pony up the dough and then sell it on again after?
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MakeEverything
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| posted on 14/5/09 at 01:11 PM |
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How about a starter motor on a toothed ring gear bolted to the sprocket? Shouldnt be too difficult.
Kindest Regards,
Richard.
...You can make it foolProof, but youll never make it Idiot Proof!...
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nick205
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| posted on 14/5/09 at 01:19 PM |
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How about keeping a wooden pole behind your seat?
When you need to reverse you simply use the pole to "punt" yourself backwards. No need to even undo your harness. Should be easy what
with you BEC boys being so low weight of course  
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eznfrank
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| posted on 14/5/09 at 01:20 PM |
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Yeah I think that's what MK do - £350!!
My fabrication skills are poo though, I guess for a start do we know which starter motors would be right size, spin right way and be powerful enough?
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eznfrank
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| posted on 14/5/09 at 01:22 PM |
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quote:
Originally posted by nick205
How about keeping a wooden pole behind your seat?
When you need to reverse you simply use the pole to "punt" yourself backwards. No need to even undo your harness. Should be easy what
with you BEC boys being so low weight of course
If it'd pass IVA I'd be more than happy to do that!!! How about a Fred Flintstone style trapdoor in the footwell.?
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iank
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| posted on 14/5/09 at 01:23 PM |
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MNR are releasing one according to totalkitcar
http://www.totalkitcar.com/news.php
Not cheap at £499 inc VAT but probably lighter and more reliable than a starter motor based solution.
Edit: Beware removing a reverse after IVA unless you're happy to declare it to the insurance companies and let them load the policy
accordingly.
[Edited on 14/5/09 by iank]
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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blakep82
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| posted on 14/5/09 at 01:27 PM |
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define 'proper'
i'd say proper means an actual reverse gear like you'd get in a car gearox, so in that case, the quafi box is your option, otherwise
starter motor with ring gear. been done many times by folk on here i think
________________________
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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eznfrank
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| posted on 14/5/09 at 01:50 PM |
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quote:
Originally posted by blakep82
define 'proper'
i'd say proper means an actual reverse gear like you'd get in a car gearox, so in that case, the quafi box is your option, otherwise
starter motor with ring gear. been done many times by folk on here i think
Yeah I guess my definition of "proper" is the absolute minimum to keep IVA man happy.
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02GF74
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| posted on 14/5/09 at 02:01 PM |
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quote:
Originally posted by nick205
How about keeping a wooden pole behind your seat?
When you need to reverse you simply use the pole to "punt" yourself backwards. No need to even undo your harness. Should be easy what
with you BEC boys being so low weight of course
don't be so ridiculous. a wooden pole indeed.
gotta be a carbon fibre pole.
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JekRankin
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| posted on 14/5/09 at 02:08 PM |
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I'd also like to know which starter motors are most suitable. There is a thread with a few pictures of various installations, but haven't
found much info on where to get the ring gear or how to wire it all up.
As far as I know, buying an Quaife or MNR box and selling it after IVA would mean having to change prop shafts too, unfortunately.
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rb968
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| posted on 14/5/09 at 02:15 PM |
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I'm off to the scrapyard on Saturday to try and find a reasonably small and hopefully decent Bosch or equivalent starter to use. Have got a
supplier of spur gears lined up so just need to find the right size starter and then match the gearing. Intend to sandwich it between the diff and
prop as discussed on the other topic. I will try and post some more when I get a bit further on with it.
I agree that info and how to on the subject is limited at the moment on here. Certainly to me (no fabricator either) the MK setup looks easy enough to
replicate without spending £350. Also sure the poster there said that didn't include welding mounting tubes on for the starter !
Rich
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MikeCapon
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| posted on 14/5/09 at 02:20 PM |
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Food for thought?
 
rev3
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MakeEverything
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| posted on 14/5/09 at 02:27 PM |
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quote:
Originally posted by MikeCapon
Food for thought?
rev3
Thats it. Thats what i was trying to describe.
Kindest Regards,
Richard.
...You can make it foolProof, but youll never make it Idiot Proof!...
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MakeEverything
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| posted on 14/5/09 at 02:29 PM |
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quote:
gotta be a carbon fibre pole.
Unless youre under overhead lines......
Kindest Regards,
Richard.
...You can make it foolProof, but youll never make it Idiot Proof!...
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tegwin
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| posted on 14/5/09 at 02:37 PM |
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I dont think the pole would pass radius tests 
------------------------------------------------------------------------------------------------------------------------
Would the last person who leaves the country please switch off the lights and close the door!
www.verticalhorizonsmedia.tv
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Richard Quinn
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| posted on 14/5/09 at 02:47 PM |
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I quite like the pole behind the seat idea. Or even an estonion or lithuanian.
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40inches
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| posted on 14/5/09 at 02:53 PM |
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There are a lot of variables involved in fabricating an electric reverse, not least is using a starter motor that runs in the correct direction, if
you don't want another forward gear 
Then there is finding a starter with a gear pitch that can be replicated, some manufactures use some very strange pitch and pressure angles.
You then need a starter that is small enough to fit, but powerful enough to move the car and at least the driver.
So far I have found what I believe to be a suitable starter and have ordered a spur gear that will fit on the diff flange as per MK, also have just
finished the drawings for a motor mount that can be either bolted, or welded on the chassis and is adjustable, so in theory it should fit most
7's.
All this lot should come together in about 2 weeks, so if you can wait I could put it all together with relays and wiring and try for a group buy, but
I will definitely post a shopping list, if it all works
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eznfrank
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| posted on 14/5/09 at 02:56 PM |
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quote:
Originally posted by 40inches
There are a lot of variables involved in fabricating an electric reverse, not least is using a starter motor that runs in the correct direction, if
you don't want another forward gear
Then there is finding a starter with a gear pitch that can be replicated, some manufactures use some very strange pitch and pressure angles.
You then need a starter that is small enough to fit, but powerful enough to move the car and at least the driver.
So far I have found what I believe to be a suitable starter and have ordered a spur gear that will fit on the diff flange as per MK, also have just
finished the drawings for a motor mount that can be either bolted, or welded on the chassis and is adjustable, so in theory it should fit most
7's.
All this lot should come together in about 2 weeks, so if you can wait I could put it all together with relays and wiring and try for a group buy, but
I will definitely post a shopping list, if it all works
If it all works OK, I'd be up for a group buy.
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sickbag
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| posted on 14/5/09 at 03:04 PM |
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quote:
Originally posted by MikeCapon
Food for thought?
rev3
Just out of curiousity - how close is the ring-gear to the ground?
Finally back on the job!
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mr henderson
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| posted on 14/5/09 at 03:13 PM |
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quote:
Originally posted by iank
MNR are releasing one according to totalkitcar
http://www.totalkitcar.com/news.php
Not cheap at £499 inc VAT but probably lighter and more reliable than a starter motor based solution.
Edit: Beware removing a reverse after IVA unless you're happy to declare it to the insurance companies and let them load the policy
accordingly.
[Edited on 14/5/09 by iank]
I can't think that it would be much lighter, not if it was well built, but would be absorbing some power all the time, whereas the electric
solution only requires power when it is operating due to the gears only meshing when needed
John
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CraigJ
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| posted on 14/5/09 at 05:09 PM |
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What what be used to control the speed of the reverse? last thing i want to do is switch it on and end up smashing through my garage door lol.
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matt_claydon
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| posted on 14/5/09 at 08:21 PM |
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Brake pedal!
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02GF74
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| posted on 15/5/09 at 07:09 AM |
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why electric?
has anyone considered hydraulic solution - e.g. using power steering pump as the driver or compressed air?
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40inches
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| posted on 15/5/09 at 10:20 AM |
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Far too complicated I think.
It would be difficult, if not impossible, to run a hydraulic pump from a bike engine, so an electric pump would be needed plus some form of hydraulic
motor to turn prop shaft or a wheel, same with compressed air, then figure in the weight and complexity
In the end most of us don't actually want a reverse, we must have one for IVA, so the simplest/cheapest route is the best way, and if it turns
out to be usable as well, that's a bonus
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Hellfire
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| posted on 15/5/09 at 11:29 AM |
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Sounds to me like there's a market here for a 'rent-a-reverse', in a similar way to the 'rent-a-cat' for IVA
purposes.
I'm sure whoever designs and builds a simple one that could be easily transferred from vehicle to vehicle, would soon recoup their initial
outlay and even make a few quid
Phil
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