iain b
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| posted on 15/6/09 at 07:41 PM |
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UPDATE ON MNR REVERSE BOX
my car has been the test bed for the reverse box..the the results are as follows...1st.fantastic...2nd..after around 1000. miles of hammer in four
week i do not want my old box back ..it drives as though there is no box at all.no clucks or backlash..and totally silent in forward gears.as you only
use reverse now and then this is the most important requirement you need ...my old box made for a noisey clangy drive.......U ALL KNOW WHAT I MEAN ...
(must go it has just stopped raining so go out for another spin)...........ps.see u all at newark this weekend along with MNR..
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iain b
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| posted on 15/6/09 at 07:50 PM |
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JUST A QUICK ONE.i will be at the show with my car on the mnr stand if any body needs to know any more details...see u all there
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Steve Hignett
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| posted on 15/6/09 at 07:52 PM |
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Are they in production now then?
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eznfrank
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| posted on 15/6/09 at 08:31 PM |
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I've been told the first batch should be ready Thursday, I'm planning to go pick mine up Friday or Saturday if it's in before then.
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madteg
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| posted on 15/6/09 at 08:34 PM |
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Got any pics ?
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iain b
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| posted on 15/6/09 at 08:41 PM |
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just got back in another 40 miles clocked up ,would have been more but did not fancy getting wet ....yes they are now taking orders and the first
batch are on there way..........i would ring chris if u are picking yours up ay the weekend because they are at newark friday onwards
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eznfrank
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| posted on 15/6/09 at 08:42 PM |
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quote:
Originally posted by iain b
just got back in another 40 miles clocked up ,would have been more but did not fancy getting wet ....yes they are now taking orders and the first
batch are on there way..........i would ring chris if u are picking yours up ay the weekend because they are at newark friday onwards
Ahh....I;d not got round to suggesting a pick up date yet, I was told this morning they should be in Thursday so I might have to go Monday
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ashg
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| posted on 15/6/09 at 08:44 PM |
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i had a play with the display one and i must say its a proper bit of kit. when its not in reverse the shaft spins freely like a prop bearing.
when it goes to reverse you can feel the internal gears working the magic and the input and output turn in opposite directions. what i also noted was
how solid it felt and how well it went into and held in reverse.
[Edited on 15/6/09 by ashg]
Anything With Tits or Wheels Will cost you MONEY!!
Haynes Roadster (Finished)
Exocet (Finished & Sold)
New Project (Started)
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iain b
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| posted on 15/6/09 at 08:47 PM |
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all i can say is my old box is not going back in...and that is that
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iain b
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| posted on 15/6/09 at 08:57 PM |
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i also forgot to say.it is an exact replacement for what is the most popular box on the market...bolt holes and prop bolt centres..it took me just an
hour to swop mine over..
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Winston Todge
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| posted on 15/6/09 at 09:25 PM |
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Great news about the reverse box Iain! Sounds like a great bit of kit.
Just a question about your comment 'no clunks or backlash'. I'm just wondering if this is a comparitive point relative to the old
reverse box or whether it really is no clonks at all in forward gears irrelevant of whether you're changing up or pulling away?
I've got no reverse fitted with a TRT Dunning and Fairbank prop and there is a fair amount of backlash in the transmission. This is mostly
noticeable when slowing in first under engine braking then pulling away again without going back into neutral.
I dont have a huge amount of experience with BEC's but lots with bikes! Just curious whether this is a Differential wear issue (not
recond'ed) or whether it's inherent in motorcycle gearboxes?
Ta,
Chris.
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Triggerhappy
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| posted on 16/6/09 at 08:00 AM |
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How about servicing etc...imin the middle of my build and can only refer to my friends experiences with current reverses (Quaife and westfield) and
they spit oil etc...flange bearings don´t live to well.
Is there an power rating on the MNR box? (Hayabusa power)
Im from Sweden, so im escused...The Muppet drummer for president!!
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eznfrank
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| posted on 16/6/09 at 10:16 AM |
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quote:
Originally posted by Triggerhappy
How about servicing etc...imin the middle of my build and can only refer to my friends experiences with current reverses (Quaife and westfield) and
they spit oil etc...flange bearings don´t live to well.
Is there an power rating on the MNR box? (Hayabusa power)
I have bagged one of the boxes (just waiting a collection date). I was told it would be fine for my ZX12, similar to standard Busa power. And also
that it does not require servicing?
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iain b
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| posted on 16/6/09 at 09:19 PM |
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the box builds no pressure up so spits no oil out,as asked you will always get a bit of backlash from abike gearbox but this box is like driving with
just a straight prop with centre bearing .......................i also forgot to say i got an instant 5bhp increase at the wheels as it is friction
free
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daniel mason
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| posted on 16/6/09 at 09:53 PM |
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how much BHP do they lose against the same set up but with straight through prop and no reverse?
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marc n
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| posted on 17/6/09 at 01:00 AM |
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thats a good question !! would like to do that test too when time allows, would suspect there wont be any / or very little difference as when your
going forward all its doing is running on two oil lubricated bearings, whereas on a centre bearing prop your running through one sealed bearing
be nice to do the test one day to give the definative answer 
cheers
marc
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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daniel mason
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| posted on 17/6/09 at 05:26 PM |
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if the results are very similar i may get one later in the year marc. especially if i keep getting into awkward positions and have to get out and
push! lol
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Triggerhappy
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| posted on 18/8/09 at 12:42 PM |
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Got my precious today....Ultra smooth 
http://www.youtube.com/watch?v=i7wQfVcXOZc
[Edited on 18/8/09 by Triggerhappy]
Im from Sweden, so im escused...The Muppet drummer for president!!
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