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What is normal? - Printable Version

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What is normal? - alan - 19-11-2006

<!--quoteo(post=22206:date=Sat 18th Nov 2006, 08:03 PM:name=Pict)-->QUOTE(Pict @ Sat 18th Nov 2006, 08:03 PM) <{POST_SNAPBACK}><!--quotec-->Sorry Steve - you were spot on: 5000rpm at 88mph for a 900 [Image: blush.gif] (I normally spend my time more at leisure).

Crossing topics, it gave me a chance to confirm that taking the beading off the edge of my MRA screen does seem to smooth the airflow and reduce noise, even on a blustery day like today. I prefer the look of the plain edge anyway.<!--QuoteEnd--><!--QuoteEEnd-->
i found that aswell theres a reply on the 16th/11/06 its within the topic --Wind
Iv got the taller yamaha screen

What is normal? - robelst - 19-11-2006

<!--quoteo(post=22263:date=Sun 19th Nov 2006, 12:57 PM:name=wicklamulla)-->QUOTE(wicklamulla @ Sun 19th Nov 2006, 12:57 PM) <{POST_SNAPBACK}><!--quotec-->ahh oil bet she accelerates like feck though !<!--QuoteEnd--><!--QuoteEEnd-->
No complaints there, although the gear-ranges get a bit short by all this. Don't think it will do much favours to the fuel consumption though (still on first fuel load). Since I will be doing quite a lot of motorway miles on it, I will definitely get standard sprockets. Probably means a new chain as well although it show very little free play on the sprocket at the moment. Also noticed the chain's got a clip, not quite sure about that either on a 80 bhp bike... [Image: huh.gif]

What is normal? - wicklamulla - 20-11-2006

<!--quoteo(post=22280:date=Sun 19th Nov 2006, 06:21 PM:name=robelst)-->QUOTE(robelst @ Sun 19th Nov 2006, 06:21 PM) <{POST_SNAPBACK}><!--quotec-->No complaints there, although the gear-ranges get a bit short by all this. Don't think it will do much favours to the fuel consumption though (still on first fuel load). Since I will be doing quite a lot of motorway miles on it, I will definitely get standard sprockets. Probably means a new chain as well although it show very little free play on the sprocket at the moment.<!--coloro:#FF0000--><!--/coloro--> Also noticed the chain's got a clip, not quite sure about that either on a 80 bhp bike... [Image: huh.gif]<!--colorc-->
<!--/colorc--><!--QuoteEnd--><!--QuoteEEnd-->



thats really a no no on a TDM but some people do use split links, fit a soft link asap or renew the chain like ya said along with the sprox.

What is normal? - robelst - 21-11-2006

Well then, that's one mystery explained: Thanks for all your stats and figures [Image: cool.gif]


The other challenge of the hesitating throttle response still remains.

I haven't tried wrapping the plugleads / coils yet (will do), but I put some fuel additive in the tank and also discovered a loose connection between the left exhaust silencer and header. It's a Motad Nexxus system and I hope I don't insult British craftmanship but these things seem to be made out of compressed kitchen-foil [Image: blink.gif] Anyway, I put a car-type exhaust clamp on it that resolved this problem. I'd be surprised if this exhaust system will survive a single winter but let's see what happens. The engine seems to run (even) smoother now, although still failed a sudden throttle-blip this morning. So still not resolved completely.

If this problem is electrics related, I wonder if iridium plugs might help? I know there's a lot of hype, nonsense and la-di-da surrounding these things, but they do indeed foul up less quickly and need less energy to spark. It's worth a try, they are getting cheaper now and last longer too so won't loose out on this even if they don't help ridding the problem.



Probably unrelated but a final little question:
Is a faint ticking noise (sounds like distribution rather than a bearing) from the engine "normal", or is this a (known) serious reason to worry? I can hear it especially when braking on the engine and my helmet flipped open. The engine has done 33k in 3.5 years so wouldn't expect it to be worn already. It's not louder than many of the noises that my Africa Twin or Buell produce but I just wonder what the norm is in TDM-land [Image: smile.gif]

BTW: the drive-chain seems loose enough (not too loose either) so I don't think it's that. Could even be the clutch basket because the clutch has a slight tendency to rubble when used under fast accelleration. Is that typical as well maybe? [Image: huh.gif]


I hoped I haven't run out of my newbie question-quota, thanks in advance [Image: laugh.gif]

What is normal? - amarko5 - 21-11-2006

just for info my 900 is

4000 rpm 72 mph
5000 rpm 89 mph
6000 rpm 106 mph

it was a bit slippy to go any quicker yesterday [Image: laugh.gif]

ohh and they are 2 up on standard gearing BTW

What is normal? - steveglover - 22-11-2006

<!--quoteo(post=22500:date=Tue 21st Nov 2006, 10:15 PM:name=amarko5)-->QUOTE(amarko5 @ Tue 21st Nov 2006, 10:15 PM) <{POST_SNAPBACK}><!--quotec-->just for info my 900 is

4000 rpm 72 mph
5000 rpm 89 mph
6000 rpm 106 mph

it was a bit slippy to go any quicker yesterday [Image: laugh.gif]

ohh and they are 2 up on standard gearing BTW<!--QuoteEnd--><!--QuoteEEnd-->
I find if I do 106mph 2 up I get bruised kidneys.

What is normal? - TonyDevil - 24-11-2006

91/J mk1 with standard gearing - indicated speeds/rpm

50-80mph went past too quickly to notice....
90mph 4900rpm
100mph 5500rpm
110mph 6100rpm
120mph 6600rpm
130mph 7100rpm
she tops out at about 138 so couldn't tell you any more.

don't forget your speedo is normally out by 5% (10% variance), so 100 is 95 ish.

What is normal? - PortisHead - 24-11-2006

Did you check the TPS on the carbs ???
(Throttle Position Sensor)
If you look at the service manual there is a very easy way to check if it is working well.
In case you don't have the service manual...click below
[Image: thb_92653.jpeg]

What is normal? - copsey1 - 24-11-2006

<!--quoteo(post=22145:date=Fri 17th Nov 2006, 10:21 PM:name=SteveGlover)-->QUOTE(SteveGlover @ Fri 17th Nov 2006, 10:21 PM) <{POST_SNAPBACK}><!--quotec-->Pretty sure Pict, 88mph at 5000, 70 at 4000, both equate to about 17.5mph/1000revs.
I don't spend a lot of time at 88mph, its just a speed I pass through on the way to something more appropriate....... [Image: wink.gif]<!--QuoteEnd--><!--QuoteEEnd-->
Hi All, This is about what my 2004 900 gives when i sit at 70 on bypasses indicates @4000rpm, may help but [Image: good.gif]
TDMalcolm

What is normal? - robelst - 24-11-2006

<!--quoteo(post=22819:date=Fri 24th Nov 2006, 10:59 AM:name=PortisHead)-->QUOTE(PortisHead @ Fri 24th Nov 2006, 10:59 AM) <{POST_SNAPBACK}><!--quotec-->Did you check the TPS on the carbs ???
(Throttle Position Sensor)
If you look at the service manual there is a very easy way to check if it is working well.
In case you don't have the service manual...click below
[Image: thb_92653.jpeg]<!--QuoteEnd--><!--QuoteEEnd-->
Weyhey, that's a good suggestion, thanks for that [Image: cool.gif] . I didn't realise it was fitted on my TDM. I'm not overly impressed having the disadvantages of fuel-injection's complexity added to an honest carbed bike, but there you go [Image: dry.gif]
It will give me something to do over the weekend.

BTW: I have emptied half a bottle of Redex carb-cleaner in the fuel tank (my bike hadn't been used since May by the previous owner) which seems to help too, so I might bite the bullet and clean the carbs "manually" later on.

What is normal? - PortisHead - 24-11-2006

<!--quoteo(post=22836:date=Fri 24th Nov 2006, 05:03 PM:name=robelst)-->QUOTE(robelst @ Fri 24th Nov 2006, 05:03 PM) <{POST_SNAPBACK}><!--quotec-->Weyhey, that's a good suggestion, thanks for that [Image: cool.gif] . I didn't realise it was fitted on my TDM. I'm not overly impressed having the disadvantages of fuel-injection's complexity added to an honest carbed bike, but there you go [Image: dry.gif]
It will give me something to do over the weekend.

BTW: I have emptied half a bottle of Redex carb-cleaner in the fuel tank (my bike hadn't been used since May by the previous owner) which seems to help too, so I might bite the bullet and clean the carbs "manually" later on.<!--QuoteEnd--><!--QuoteEEnd-->

Be carefull with those carb-cleaners.
If there is dirt in your tank...they will flush the dirt away from the tank...right into your carbs.
Better....manual cleaning

What is normal? - robelst - 24-11-2006

<!--quoteo(post=22838:date=Fri 24th Nov 2006, 01:10 PM:name=PortisHead)-->QUOTE(PortisHead @ Fri 24th Nov 2006, 01:10 PM) <{POST_SNAPBACK}><!--quotec-->Be carefull with those carb-cleaners.
If there is dirt in your tank...they will flush the dirt away from the tank...right into your carbs.
Better....manual cleaning<!--QuoteEnd--><!--QuoteEEnd-->
I believe I'd seen in Haynes that the late 850 models have a fuel filter? I know these thingies have their limitations too, I was just curious if I'd notice any difference at all before taking the carbs apart. Now that is has, I may want to do that anyway and get that TPS checked over as well.