Search found 694 matches

by andyb
Tue Dec 01, 2020 9:14 pm
Forum: General Off Topic Chat
Topic: The moon
Replies: 14
Views: 373

Re: The moon

I think the Chinese have found it!
AndyB
by andyb
Fri Nov 27, 2020 4:54 pm
Forum: Airhead Q&A's
Topic: Coil types
Replies: 34
Views: 777

Re: Coil types

Why not ring Boyer and ask if their system powers down when the engine is not running?

I can not see a MkIII Boyer kit for BMWs on their website but they do KIT00097 which is their Micro-Digital system (which my bike has). How does their MkIII system differ to their Micro-Digital system?

AndyB
by andyb
Mon Nov 23, 2020 8:55 pm
Forum: Airhead Q&A's
Topic: Monoshock Gaitor
Replies: 5
Views: 212

Re: Monoshock Gaitor

I made one for my R100R by sewing velcro onto 3mm neoprene and wrapping it around the suspension unit. It has lasted about 10 years now! The neoprene has nylon on both sides as used in wetsuits.
AndyB
by andyb
Sat Nov 21, 2020 8:43 pm
Forum: Airhead Q&A's
Topic: Heated grips
Replies: 68
Views: 6791

Re: Heated grips

Why not use a BMW 2 way rocker switch? I also did not like the Oxford controller and so simply used the standard BMW switch with resistance wire reducing the power in one of the positions. My bike had previously had heated grips so it was easy to change the wiring from the BMW grips to the Oxford on...
by andyb
Thu Nov 12, 2020 3:20 pm
Forum: Airhead Q&A's
Topic: Oil cooler thermostat questions
Replies: 33
Views: 733

Re: Oil cooler thermostat questions

If the wire got caught and went open circuit, then worked again once it was released, I would think it may be damaged internally and one day will go open circuit again.......I would replace it. Unless when it was pulled it simply opened a push connection that you have remade,
andyB
by andyb
Mon Nov 09, 2020 10:22 pm
Forum: Airhead Q&A's
Topic: Hydraulic lifts.
Replies: 13
Views: 398

Re: Hydraulic lifts.

I have the same as Mark. It has worked fine with my R100R but is too short for my Moto Guzzi V7 (the centre stands on Guzzis are quite far back).
AndyB
by andyb
Sat Nov 07, 2020 8:09 pm
Forum: Airhead Q&A's
Topic: Oil cooler thermostat questions
Replies: 33
Views: 733

Re: Oil cooler thermostat questions

...I can’t imagine demonstartors being run in today either! :drunken: But that is probably not what you meant. When I fitted the deeper sump to my R100R (after removing the oil cooler) it allowed a lower minimum oil level as I also fitted the lower pick up. Rather essential! The lower pick up is 11m...
by andyb
Mon Nov 02, 2020 10:28 pm
Forum: Airhead Q&A's
Topic: Gearbox / rear diff oil R100R
Replies: 16
Views: 645

Re: Gearbox / rear diff oil R100R

Hi Mark
No problem O:)
AndyB
by andyb
Mon Nov 02, 2020 9:33 pm
Forum: Airhead Q&A's
Topic: Gearbox / rear diff oil R100R
Replies: 16
Views: 645

Re: Gearbox / rear diff oil R100R

Well....I initially ordered the fully synthetic 75w90 that Mark pointed me to. At under £25 for 5 L it seemed a good buy, Two hours later I had second thoughts and cancelled the purchase. I then ordered 3L of Fuchs synthetic 75w90 at £30 and felt happier that this would be OK - until I started worry...
by andyb
Mon Nov 02, 2020 9:12 am
Forum: Airhead Q&A's
Topic: Gearbox / rear diff oil R100R
Replies: 16
Views: 645

Re: Gearbox / rear diff oil R100R

OK - so the older mineral sae 80w90 oils have now been replaced by more modern sae 75w90 semi or pure synthetic oils....which will be slightly thinner at low temps.
Any downside of a 75w90? Eg Seal leakage?

AndyB
by andyb
Sun Nov 01, 2020 7:19 pm
Forum: Airhead Q&A's
Topic: Gearbox / rear diff oil R100R
Replies: 16
Views: 645

Gearbox / rear diff oil R100R

Looks like I will have a little time over the next few weeks to catch up on some maintenance on my R100R..... Where I used to live I could pick up Valvoline Durablend 80W90 Which I think is semi-synthetic but I can not find it now. I don’t want to use mineral, or ester, so another brand of semi-synt...
by andyb
Fri Oct 30, 2020 1:11 pm
Forum: Airhead Q&A's
Topic: R100 gear selection problem on the down-shift
Replies: 32
Views: 846

Re: R100 gear selection problem on the down-shift

So far I have been lucky with gearboxes and not had any problems. I am mechanically competent but I am also aware of my own limitations and the tools that are needed to do a gearbox overhaul properly. Plus there is an expertise that builds up when someone is doing a job regularly.........so personal...
by andyb
Thu Oct 22, 2020 6:48 pm
Forum: Airhead Q&A's
Topic: R100R rear wheel hub cover
Replies: 7
Views: 261

Re: R100R rear wheel hub cover

I love it! \:D/
It may well be a pan lid but needs to be about 24m diameter not 40cm.
Does anyone know the size of a /5 one?
I did ask the seller (yes it is that Black R100R in the ebay advert) but he did not know where it came from.
AndyB
by andyb
Wed Oct 21, 2020 8:38 pm
Forum: Airhead Q&A's
Topic: R100R rear wheel hub cover
Replies: 7
Views: 261

R100R rear wheel hub cover

On ebay is a nice black R100R with an alloy or chrome rear wheel hub cover that hides the rather ugly 4 bolts that hold the wheel in place. I have emailed with the seller but he does not know where it came from. I have spoken with ‘Works who say it is not a K series cover.....and they were very good...
by andyb
Sat Oct 17, 2020 8:32 pm
Forum: Airhead Q&A's
Topic: Changing Fork Oil Viscosity
Replies: 72
Views: 1959

Re: Changing Fork Oil Viscosity

Rob,
That is what I said in my post on the front page. Less oil adds more air and softens the forks.
AndyB
by andyb
Mon Oct 12, 2020 2:04 pm
Forum: Airhead Q&A's
Topic: Changing Fork Oil Viscosity
Replies: 72
Views: 1959

Re: Changing Fork Oil Viscosity

The volume of oil can also make quite a difference - a little less and the forks can become more supple (more air being compressed?) - I imagine too much oil would make them harsh when hitting bumps
andyB
by andyb
Sat Sep 26, 2020 7:56 pm
Forum: Airhead Q&A's
Topic: Advice on fuel consumption
Replies: 63
Views: 2096

Re: Advice on fuel consumption

Parasitic drag is the enemy. Panniers, wing mirrors and slab fronted screens all unfortunately cause drag. While I personally do not like the RS fairing I believe it is quite efficient? It really is time that motorbikes were better aerodynamically
AndyB
by andyb
Wed Sep 23, 2020 6:57 pm
Forum: Airhead Q&A's
Topic: Advice on fuel consumption
Replies: 63
Views: 2096

Re: Advice on fuel consumption

When fuel is sold in litres and bikes have speedometers in miles, miles per litre seems a logical way to consider fuel burn? 10 miles / litre is 45mpg, 11 is 50, 12 is 55..... My R100R does just over 10 miles / litre so 45 - 50mpg. Not great economy for the power.... My Triumph Sprint had a lot more...
by andyb
Tue Sep 22, 2020 8:26 pm
Forum: Airhead Q&A's
Topic: Actual and Quoted Power Outputs
Replies: 6
Views: 360

Re: Actual and Quoted Power Outputs

I put my Moto Guzzi on a dyno to check out the effect of removing the lambda sensor - horrible experience! Maybe I am too mechanically sensitive but never again. Seeing my bike’s engine thrashed to check the power delivery was not nice.
AndyB
by andyb
Sat Aug 29, 2020 9:13 pm
Forum: Airhead Q&A's
Topic: High idle and rough acceleration
Replies: 57
Views: 2889

Re: High idle and rough acceleration

If the bike is new to you I really would change all the fluids - 3 x oils and brake fluid. And oil filter of course. Cheap insurance.
AndyB
by andyb
Tue Aug 25, 2020 5:04 pm
Forum: Airhead Q&A's
Topic: High idle and rough acceleration
Replies: 57
Views: 2889

Re: High idle and rough acceleration

Hi Roy, The point I was trying to make is that as a modern semi-synthetic oil will run to 140C in a rotax engine, then the same oil type will run to 140C in an airhead....the oil does not know what engine it is in! I agree that it is not wise to run to the max oil temp, and that at high temps the li...
by andyb
Sat Aug 22, 2020 7:21 pm
Forum: Airhead Q&A's
Topic: High idle and rough acceleration
Replies: 57
Views: 2889

Re: High idle and rough acceleration

Just going back to the original question of this thread.....the high tickover and rough pick up does sound very much like a choke sticking on. A little ACF50 can lubricate the pivots without any dismantling required
AndyB
by andyb
Sat Aug 22, 2020 6:50 pm
Forum: Airhead Q&A's
Topic: High idle and rough acceleration
Replies: 57
Views: 2889

Re: High idle and rough acceleration

Hi Barry, The MG V7 small blocks all run on synthetic 10/60 oil which is quite expensive (£12/L I seem to remember). The engines have quite a small oil capacity, 2L with the standard sump, no oil cooler, and my V7 does get hotter than my R100R. A common mod is to fit an enlarged sump - the early eng...
by andyb
Fri Aug 21, 2020 7:10 pm
Forum: Airhead Q&A's
Topic: High idle and rough acceleration
Replies: 57
Views: 2889

Re: High idle and rough acceleration

Hi Roy I think you may have made a typo in your first sentence about oil types? On other not dis-similar engines I run to 130C with Good quality semi-synthetic oil - so 110C in the sump of my airhead seems OK. Do BMW quote a max sump oil temp? I think we have had this discussion before. You live in ...
by andyb
Thu Aug 20, 2020 7:23 pm
Forum: Airhead Q&A's
Topic: High idle and rough acceleration
Replies: 57
Views: 2889

Re: High idle and rough acceleration

I had an RT - I could not see the ground immediately in front of the front wheel, which made slow riding a bit tricky if the road was not smooth. Lots of weather protection. Felt big. RS - over the years I have had 2 and I got rid of each of them very quickly - so much wind noise! Otherwise a fine b...

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