Blue Smoke !

[GregD-UK]

Hi all,

OK sl1000_dk, I have ordered a new diaphragm from my local M+S (never have any aprilia bits in stock!). So, thanks for all your help and advice guys , as usual

Still might take a trip to griff's to give it a look over....

Anyone got a preference on either evolutione or renegade or bespoke air box configuration.... while I am on the subject of fixing things

I seem to remember D-Rider was going to make a "bespoke" setup, but, that was some time ago...

[D-Rider]

Hi all,

OK sl1000_dk, I have ordered a new diaphragm from my local M+S (never have any aprilia bits in stock!). So, thanks for all your help and advice guys , as usual

Still might take a trip to griff's to give it a look over....

Anyone got a preference on either evolutione or renegade or bespoke air box configuration.... while I am on the subject of fixing things

I seem to remember D-Rider was going to make a "bespoke" setup, but, that was some time ago...

Still on the list .... have been collecting parts .....

Trouble is I have a very long list of things to do to the bike but none of it is getting done because I'm fighting to achieve the worlds most difficult fence installation project .......

House is a corner plot so it widens from sod-all at the road to 29m at the back .... and between the garden and the rear alley (which I'm trying to defend myself from) is a row of mature trees. I've chopped down about a dozen but the mrs wants the screening from the rest ..... and the roots are a complete nightmare ..... Have to chop through them with a cold chisel to make post holes ...... and where there are no roots there's concrete ..... though I did hire a kango to help with some of that.

Think it's going to be a few more weeks before I can look at anything else .... and then there will be things needing doing before the bike, I'll bet!

BTW I have both an evo airbox and a Renegade airkit but have never got round to fitting either. There are things about both that I do not like.

[Falco9]

The diaphragm should be bone dry whan you remove the outer casing cover.

Any oil in there is pointing to a damaged diaphragm, so you should be OK after you fit the new one.

This can be done whilst the bike is on the side stand (std length side stand of course) without losing any oil (in fact you can swap the entire clutch out this way without losing any oil)

F9

[MartDude]

BTW I have both an evo airbox and a Renegade airkit but have never got round to fitting either. There are things about both that I do not like.

Could you expand on that, Andy. been considering an airbox mod, & I'd be interested to hear your views

[GregD-UK]

Hi all,

OK andy, guess there are certain dynamic's of each of them (Evolutione/Renegade). At present I have a basic setup of a carbon plate with standard velocity stacks on it and a round hole at the front. Obviously, there is a gap between the edge of the plate and the under-side of the tank. Approximately 10-15mm all around I think. My concern is how much air is lost down the edge of the air box plate? Maybe, some up-draught from below? I would assume that the air won't be constant, hence, the irratic fuelling of air/petrol mix.

I have my strebel horn on the plate, abit like nooj I think. So, restoring the standard bottom airbox and fitting either of the a/m kits would mean moving the horn to where Anywho, a compromise of both kits might be a worthwhile project. Or even converting the falco box, to the newer rsvr bottom box, with the flat air filter fitted. Any thoughts on that guys?

[Nooj]

Makes sense, keep the bottom of the airbox for a seal round the tank, then have the Renegade filter over the TB's.

[D-Rider]

BTW I have both an evo airbox and a Renegade airkit but have never got round to fitting either. There are things about both that I do not like.

Could you expand on that, Andy. been considering an airbox mod, & I'd be interested to hear your views

The Evo:

• It retains the principle of having an airbox and it's objective is to increase the volume of the airbox.
  No problem with that.
  It does it by junking the airbox lid, jamming the air filter down with the tank and sealing the airbox to the tank with a flexible rubber seal.
  That's the bit I worry about. You cannot see whether the airbox has sealed perfectly to the tank .... it's just a matter of faith. The seal at the front of the airbox looks a bit dodgy - particularly the transition to the bit round the majority of the airbox.
  If it doesn't seal perfectly there is nothing to stop unfiltered air from bing sucked straight in to the engine.
  
  Maybe I'm being over concerned but personally I don't think this is the best idea for road use .... though when I do come to sell mine, I'm sure the next user will have no issues with it.

The Renegade

• This design does away with an airbox completely - it basically provides a platform to stick a big airfilter directly over the TBs.
  The filter is clamped to the plate by a couple of clamps. This looks a lot more reliable in terms of sealing than the Evo .... though I'm still not completely sure that the seal can be guaranteed - but would probably accept it's OK.
  I also think it's probably OK when you're out and about riding at a reasonable speed - air still channelled through the intake tubes to the area under the tank.
  What bothers me more is what happens in traffic at slow speeds - commuting for example - which is one of the uses I put mine to.
  With the gap around the plate, the majority of the air that it will suck in will be hot air risen from around the engine - at quite a different temperature to that measured by the temp sensor in the intake tubes.
  I also don't like the small volume of pre filtered air - it having to suck everything straight through the filter .... try running up and down stairs a couple of times with a DIY mask on to get the effect of having to filter as you use it.

Now the above doesn't mean they are bad ideas - they just don't do what I want them to.

I've thought about a number of ways to address these issues and I think I've come up with a way to increase airflow, guarantee a seal and exclude air that has risen from around the engine.

When I get time, I'll build it and then explain my solution.
Whether it gives the same performance as either of the "established designs" is something I can't predict and we'll just have to wait and find out.

Makes sense, keep the bottom of the airbox for a seal round the tank, then have the Renegade filter over the TB's.

Nope - far too difficult to do ..... I'm guessing you've not taken a proper look in there ..... just lift the lid, think about how on earth you would ever seal an air filter to the rather interesting shape of the floor of the airbox .... realise you are on the wrong track ..... stick the top back on and go back to the drawing board.

..... yes this was one of my earlier ideas .....

[MartDude]

Thanks Andy. More to ponder.

[Aladinsaneuk]

so, as a thought, a couple of intake fans, switched on when needed, may well be the best overall solution with the evo and rene solutions.....

[D-Rider]

so, as a thought, a couple of intake fans, switched on when needed, may well be the best overall solution with the evo and rene solutions.....

Can't see how it will help the Evo system and also don't forget just how much air they would have to flow - 10 to 12 litres per second at tickover or 84 litres per second at 10k rpm ..... that's a lot of air.

..... though maybe it weakens my concern for the rene solution as the engine heating of 12 litres of air per second as it comes up to the filter is probably not so huge ....

[Aladinsaneuk]

i keep telling you mate

just put the bloody rene chip and air kit on and go for a blast

then sell your spare stuff to others

simples

[Noeli0]

so, as a thought, a couple of intake fans, switched on when needed, may well be the best overall solution with the evo and rene solutions.....

perhaps if you used just one fan for the intake and powered via the exhaust pressure it would be more responsive.






does seem a little familiar though

[Samray]

so, as a thought, a couple of intake fans, switched on when needed, may well be the best overall solution with the evo and rene solutions.....

perhaps if you used just one fan for the intake and powered via the exhaust pressure it would be more responsive.






does seem a little familiar though

Just what I was thinking.

[D-Rider]

LOL ..... got one of those on my diesel Mazda

[GregD-UK]

Hi all,

Can I hijack my own thread and report that diaphragm changed and she ain't smoking no more The old one was very solid and had oil on both sides, tried to locate the hole/holes Anywho, the butinol rubber had turned hard, so, after nine years I guess was going to give up sooner or later....

Still want to fir it down to griff for a once over....

As for the air discussions, I like the cover over the TB's (Renegade), but, the look of the evolutione filter over the air intake seems more practical. Just the issue of sealing the compartment, and, ensuring that no ingress of unfiltered air...