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640 adventure
- Thread starter big simp
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Pics,
Pretty much full service history,every 4K or so
All mots
Rides spot on
I'm a happy bunny
Let me know when you decide to move it on!
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Richard,come down and have a ride,apart from being silly tall it fits me !!
30 or 40mm lower and I'm sorted,it's not got the low and midrange torque of MY funduro,but a more flat spread of power,wanting the revs.
I think the motor either has too small a carb or the exhaust is holding things back,adv rider will be bedtime reading for a while,all 400+pages
1st impressions suggest this will be a keeper,but it needs more poke
After riding the 650 on the trails at the weekend for the 1st time in a year and being spoilt by my 525,
then riding Ian's x challenge
I realised I needed a change
Will do that (probably after Spain)
Having chased Timolgra's quite a lot on the TAT I can assure you his didn't lack grunt!
Having chased Timolgra's quite a lot on the TAT I can assure you his didn't lack grunt!
My bike has a FCR 41 pumper carb with JD jetting kit Mikey, the power is there mainly low to mid range it pulls strongly at higher revs but I rarely need to go past 5 -6K rpm and that's enough to keep the 690s at bay
I've ridden standard 640s and they're not particularly exciting with much less grunt where you really want it and an almost slight delay in throttle response.
In theory, the FCR39 gives more emphasis on power low down although not sure it could be better than my set up.
I've tried the open side air box conversion but it sucks a lot of dust there and of course deep water could get in there so run with just the snorkel removed and an Akra exhaust.
Probably best not to use this mod on a pre high flow engine as it can't cope with that amount of fuel/air possibly causing detonation but your's is hi Flow and although can't be discounted, it's less of an issue in my opinion.
There's some modifications you can make to the standard carb which you'll find on adv rider but doubt it'll be as effective as the FCR by a long way.
Oh, fit new cam followers (you can buy just the bearings) and rebuild the water pump while your at it.
I've ridden standard 640s and they're not particularly exciting with much less grunt where you really want it and an almost slight delay in throttle response.
In theory, the FCR39 gives more emphasis on power low down although not sure it could be better than my set up.
I've tried the open side air box conversion but it sucks a lot of dust there and of course deep water could get in there so run with just the snorkel removed and an Akra exhaust.
Probably best not to use this mod on a pre high flow engine as it can't cope with that amount of fuel/air possibly causing detonation but your's is hi Flow and although can't be discounted, it's less of an issue in my opinion.
There's some modifications you can make to the standard carb which you'll find on adv rider but doubt it'll be as effective as the FCR by a long way.
Oh, fit new cam followers (you can buy just the bearings) and rebuild the water pump while your at it.
Will do that (probably after Spain)
Having chased Timolgra's quite a lot on the TAT I can assure you his didn't lack grunt!
My bike was flat then compared to how it is now mate
Archie Adv
Registered user
Archie Adv
Registered user
Its got the usual marks to be expected though if it's been used as intended. Chris Barnes on this site and ADV Rider is your man for the Carbon fibre tank protectors to prevent further damage and protect the fuel tap which really is exposed to damage and the tanks cost a fortune and are like hens teeth.
Tim highlights the points we chatted about on Thursday and mentions the FCR Carbs as a worthwhile mod.
I've got a nice KTM power rangers suit that will fit you and you'll really look the part..!! Instead of the old Hein Gericke kit you wear.....
I've also got the fix for you being a short arse like me providing the prospective buyer doesn't need it - More anon.
I'm also sure you will find it much more comfortable than the 525 with its armchair like seat a opposed to the plank on the 525....
Single disc conversion could be worthwhile IMO
You will find out PDQ it's not a green laner..... turning circle is too big and is reduced further by the bar protectors hitting the mask/fairing.
The 525 will be better on the lanes providing you don't get bogged in the first 100m off road...... ha ha. Hope he doesn't read this Paul?
I'm intrigued by what look like big rubber bands on the fairing.. WTF are they?
More work to keep you occupied in the dark months ahead..... Enjoy mate.
Tim highlights the points we chatted about on Thursday and mentions the FCR Carbs as a worthwhile mod.
I've got a nice KTM power rangers suit that will fit you and you'll really look the part..!! Instead of the old Hein Gericke kit you wear.....
I've also got the fix for you being a short arse like me providing the prospective buyer doesn't need it - More anon.
I'm also sure you will find it much more comfortable than the 525 with its armchair like seat a opposed to the plank on the 525....
Single disc conversion could be worthwhile IMO
You will find out PDQ it's not a green laner..... turning circle is too big and is reduced further by the bar protectors hitting the mask/fairing.
The 525 will be better on the lanes providing you don't get bogged in the first 100m off road...... ha ha. Hope he doesn't read this Paul?
I'm intrigued by what look like big rubber bands on the fairing.. WTF are they?
More work to keep you occupied in the dark months ahead..... Enjoy mate.
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The rubber bands,PO said they were really handy for stuffing gloves / etc behind the "screen".
Why you would want to drill a load of holes in the bodywork is quite beyond me but he was a proper fenlander born and bred so who knows.
I'm going to ride it for a few weeks to get the feel of it,but would be interested in the lowering links plus any other desirable bling anyone may have
I started reading the ADV rider forum but lost the will to live after about 10 pages,(I hate yank forums,, way too much drivel
)I may get more sense by asking questions here
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Tim,what doner bikes have the FCR pumper fitted.?
I found a recon 41.8 fcr by flowpro,?£355 .
Sounds expensive,but if it fits and works well from the box it may be an easy solution.
Having ridden the bike a bit more,it's not lacking power,but I expected it to be more urgent and torquey.
It smells like it's running rich and I had petrol coming from one of the breathers when I did a big stoppie,
also it won't wheelie??
Adv fellas are saying these will lift the front wheel in 2nd and 3rd.
So jobs are;
See what gearing its got on,I can see it has 49 on the rear
Full service,
Strip carb ,check float level and check for wear(it has done60k)
The bike has never been apart looking at it,so it's due some TLC,
But I'm reluctant to start pulling it apart cos once I start I won't stop till it's been reduced to its constituent parts.
The frame paint is a bit shit with rusty patches ,it's already bugging me
I found a recon 41.8 fcr by flowpro,?£355 .
Sounds expensive,but if it fits and works well from the box it may be an easy solution.
Having ridden the bike a bit more,it's not lacking power,but I expected it to be more urgent and torquey.
It smells like it's running rich and I had petrol coming from one of the breathers when I did a big stoppie,
also it won't wheelie??
Adv fellas are saying these will lift the front wheel in 2nd and 3rd.
So jobs are;
See what gearing its got on,I can see it has 49 on the rear
Full service,
Strip carb ,check float level and check for wear(it has done60k)
The bike has never been apart looking at it,so it's due some TLC,
But I'm reluctant to start pulling it apart cos once I start I won't stop till it's been reduced to its constituent parts.
The frame paint is a bit shit with rusty patches ,it's already bugging me
Archie Adv
Registered user
I'm with you on the rubber bands and as mentioned above the fairing is mega £'s if you had to replace! In fact you could probably buy a Carbon one like Tim's for less than OEM.
We both know a man who does a nice job in Powder Coat.... ha ha And you get it cheaper than most.
You've got too much on the go right now so take your time, ride it.
The Kouba link will do the job however you'll still be only Tip Toes on the deck and tbh I haven't found it to dramatically affect the handling. Never bottomed out on me ever but then you and me are lightweights! might be different if your a 16 stone fat boy...... They do pull wheelie's! Easily but if it's been geared for higher speed cruising it might be a struggle.
Derek (Motolab) on ADV Rider will tell you the carb will need a new slide and multifarious other parts and I'd probably agree at 60K a refurb wouldn't harm it it but the FCR pumper will release the power more easily and as you already know they're not cheap either..!!
It's a big bike once it's in the air but a rider (Nutter) of your calibre should have no problem..
ha ha.
A good deal can be had on the bling... KTM Power (Ranger) Wear (Matching Twin Set)
Suit you down to a 'T'....
BTW nut & bolt checks are a must due to vibes subframe and rear peg hangers loosen off easily and are a pain if the sheer as they are into blind threaded holes. Fairing mounting bolts also seem to have a habit of working loose too. Not teaching to to suck eggs mate, I've lost count of the number I've had to replace.
Catch up during the week.
We both know a man who does a nice job in Powder Coat.... ha ha And you get it cheaper than most.
You've got too much on the go right now so take your time, ride it.
The Kouba link will do the job however you'll still be only Tip Toes on the deck and tbh I haven't found it to dramatically affect the handling. Never bottomed out on me ever but then you and me are lightweights! might be different if your a 16 stone fat boy...... They do pull wheelie's! Easily but if it's been geared for higher speed cruising it might be a struggle.
Derek (Motolab) on ADV Rider will tell you the carb will need a new slide and multifarious other parts and I'd probably agree at 60K a refurb wouldn't harm it it but the FCR pumper will release the power more easily and as you already know they're not cheap either..!!
It's a big bike once it's in the air but a rider (Nutter) of your calibre should have no problem..
ha ha. A good deal can be had on the bling... KTM Power (Ranger) Wear (Matching Twin Set)
Suit you down to a 'T'....BTW nut & bolt checks are a must due to vibes subframe and rear peg hangers loosen off easily and are a pain if the sheer as they are into blind threaded holes. Fairing mounting bolts also seem to have a habit of working loose too. Not teaching to to suck eggs mate, I've lost count of the number I've had to replace.
Catch up during the week.
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Bikes like Husaberg, KTM exc etc. often have FCRs but they won't necessarily work straight away with the 640 as all the jets and needle need to suit as well as adjusting (restricting) the fuel squirt.
640 boot from the air box doesn't fit, so get one for a ktm 625 which does have an FCR fitted, even then they're on'y just long enough which you can get away with but I've made one for my bike by bonding the two ie. 640 and 625 to give a better fit.
I've just left my tps disconnected, then you need to sort the choke which will depend on whether it's an mx carb, it's all easily doable and I still have my choke on the bars.
As I said, mine has a JD jetting kit which comes with two needles plus pilots and main jets to tune the bike for altitude etc. The point of this kit is the needle has three varying tapers to help with mid range consistancy rather than just one relatively crude single taper.
Trouble I had was that despite setting the bike to their recommended info I wasn't happy so following several email exchanges I found something that worked pretty well even though they weren't sure why.
I've recently altered the needle height again to further improve that all important mid range.
You've probably guessed that for me, smooth bottom end and mid range power is by far the most important area to work on and that power needs to be instant!
Get it right and it transforms the bike
640 boot from the air box doesn't fit, so get one for a ktm 625 which does have an FCR fitted, even then they're on'y just long enough which you can get away with but I've made one for my bike by bonding the two ie. 640 and 625 to give a better fit.
I've just left my tps disconnected, then you need to sort the choke which will depend on whether it's an mx carb, it's all easily doable and I still have my choke on the bars.
As I said, mine has a JD jetting kit which comes with two needles plus pilots and main jets to tune the bike for altitude etc. The point of this kit is the needle has three varying tapers to help with mid range consistancy rather than just one relatively crude single taper.
Trouble I had was that despite setting the bike to their recommended info I wasn't happy so following several email exchanges I found something that worked pretty well even though they weren't sure why.
I've recently altered the needle height again to further improve that all important mid range.
You've probably guessed that for me, smooth bottom end and mid range power is by far the most important area to work on and that power needs to be instant!
Get it right and it transforms the bike
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Thanks for the infoYou've probably guessed that for me, smooth bottom end and mid range power is by far the most important area to work on and that power needs to be instant!
Get it right and it transforms the bike
I think this bike will evolve much as yours has Tim
I was expecting it to be more like my now sold 525 with its power delivery.
But I think a combination of things are preventing it breathing properly standard exhaust,worn carb,gearing etc .and although it's been regularly serviced I doubt it's ever been properly set up ,
The PO certainly did not have the experience to fettle it,
Most of the invoices I have are for standard servicing,and repairs.
Engine wise I have my f650 pretty well sorted,high comp piston and jetting means it pulls hard from idle ,and it has a huge amount of torque when slogging up steep climbs,
If I can get this bike as responsive as my BMW,with sorted suspension it will do me
Thanks for the info
I think this bike will evolve much as yours has Tim
I was expecting it to be more like my now sold 525 with its power delivery.
But I think a combination of things are preventing it breathing properly standard exhaust,worn carb,gearing etc .and although it's been regularly serviced I doubt it's ever been properly set up ,
The PO certainly did not have the experience to fettle it,
Most of the invoices I have are for standard servicing,and repairs.
Engine wise I have my f650 pretty well sorted,high comp piston and jetting means it pulls hard from idle ,and it has a huge amount of torque when slogging up steep climbs,
If I can get this bike as responsive as my BMW,with sorted suspension it will do me
My Husaberg 550 has the same FCR carb and I still can't get the 640 fuelling as good as that ....yet
I think the fairing loops on yours are cool and would leave it alone or if needed, make your own like with my other fairing using a Dakar screen which incidentally does a far better job that the new carbon one
albeit a bit heavier.If you get really stuck I do have another fairing as a spare which is good that I've never used plus a good tank which I'll hang onto in case of a major 'mishap'.
Most important thing with these and any bike of their kind is it being strong and reliable.
Archie mentions loosing bolts through vibration, I don't think I've ever lost any bolt so as a fellow engineer that won't be a problem to you either.
Personally I'd spend the money on refurbishing the carb to start with and definitely new cam followers (did I already mention that?
), slightly stronger fork springs, perhaps from a 950/990 and overhaul the forks.I've had to go stiffer on the rear shock, partly because of the fast stuff in Morocco but it's still compliant enough for Welsh trail riding.
Enjoy and make an appointment at the dentist for your fillings
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Anyone know if the silencer off a 625 SMC will fit the 640?
While you got the rear sub frame clear it's worth considering reinforcing it with a gusset on the under side.
You can see in the pic of how I did mine. If the tool box holder is still there....it will break off at some point losing your tool kit.
I have a tool holder fixed to the reinforced metal work so it's going nowhere.
Not sure about the silencer as I thought the header pipes are different on the SMC.
You can see in the pic of how I did mine. If the tool box holder is still there....it will break off at some point losing your tool kit.
I have a tool holder fixed to the reinforced metal work so it's going nowhere.
Not sure about the silencer as I thought the header pipes are different on the SMC.
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Any more weak points on the subframe,?
Decided on a plan yesterday,now the bike is clean and I've had a chance to look over it properly.
The frame paint is past it's best,the subframe is tatty and the motor has a leak from the output shaft.
So the whole bike will be coming apart for a proper refresh
If anyone is interested I'll start another thread ?
Decided on a plan yesterday,now the bike is clean and I've had a chance to look over it properly.
The frame paint is past it's best,the subframe is tatty and the motor has a leak from the output shaft.
So the whole bike will be coming apart for a proper refresh
If anyone is interested I'll start another thread ?
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