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Search: Posts Made By: chasbmw
Forum: Airheads Yesterday, 10:57 AM
Replies: 25
Views: 1,194
Posted By chasbmw
I have those mirrors minted on the headlamp ear...

I have those mirrors minted on the headlamp ear bolts on my R50, they show the indicator on the end of the handle bar and not much else! They are not that well made and as the glass is flat you...
Forum: Airheads Yesterday, 06:20 AM
Replies: 14
Views: 472
Posted By chasbmw
Some of the differences between early 70s Nortons...

Some of the differences between early 70s Nortons and airheads make you realise why the airheads were such premium priced products compared to the Nortons and the other Brit bikes.
Forum: Airheads Yesterday, 12:35 AM
Replies: 12
Views: 358
Posted By chasbmw
I have used Bridgestone BT45s (Euro designation)...

I have used Bridgestone BT45s (Euro designation) road riders and Pilot Actives on my bikes over the last 4 years.

IMHO the pilot actives in Stock BMW sizes are by a reasonable margin the best...
Forum: Airheads 04-16-2015, 12:47 AM
Replies: 14
Views: 472
Posted By chasbmw
As well as the change to the breather valve, BMW...

As well as the change to the breather valve, BMW fitted a deeper oil sump to increase crankcase volume.
Forum: Old's Cool 04-15-2015, 01:15 AM
Replies: 7,707
Views: 3,590,648
Posted By chasbmw
I think that if you are going to put a shed load...

I think that if you are going to put a shed load of hours and even more cash into building the bike of your dreams then you should end up with something that goes faster, brakes better and handles...
Forum: Airheads 04-13-2015, 02:46 PM
Replies: 26
Views: 1,002
Posted By chasbmw
And remember the copper grease on the threads and...

And remember the copper grease on the threads and the back of the screw head when you put it back together again!

I find that rapping the end of the screwdriver with a light hammer (carb body...
Forum: Airheads 04-13-2015, 02:41 PM
Replies: 28
Views: 1,099
Posted By chasbmw
My brother had a very fast 2002, Pistons cams and...

My brother had a very fast 2002, Pistons cams and heads, bit of throttle in the wet on londons slippery streets and the back slid very nicely.

But what would be interesting is the number of parts...
Forum: Airheads 04-13-2015, 02:37 PM
Replies: 6
Views: 398
Posted By chasbmw
Those Pistons look good. Worthwhile to check the...

Those Pistons look good. Worthwhile to check the width of the top ring groove, opposite the wrist pin, it's the first point of wear.
Forum: Old's Cool 04-13-2015, 08:49 AM
Replies: 16
Views: 1,023
Posted By chasbmw
Back then, when I was a more ignorant little so...

Back then, when I was a more ignorant little so and so, I had a T110 based Tribsa with a goldstar frame, I bought it as a scrambler then spent too much time and effort converting it back to a road...
Forum: Old's Cool 04-13-2015, 08:38 AM
Replies: 6
Views: 422
Posted By chasbmw
My experience with the very similar Racetech...

My experience with the very similar Racetech valves on ATE forks is that they are sold as a one size fits all kit and my experience with the Racetech suggested settings was that they were plain...
Forum: Airheads 04-13-2015, 12:44 AM
Replies: 6
Views: 398
Posted By chasbmw
Motoren Israel sell 9.5:1 Pistons for use in...

Motoren Israel sell 9.5:1 Pistons for use in 90/6s and 90s in three oversizes, modern lightweight Pistons made by Wossner. Slightly cheaper than OEM.

For info.
Forum: Airheads 04-09-2015, 02:11 PM
Replies: 7
Views: 383
Posted By chasbmw
Sure about that?

Sure about that?
Forum: Airheads 04-09-2015, 01:09 AM
Replies: 11
Views: 882
Posted By chasbmw
It Lille be good to see a professionally built...

It Lille be good to see a professionally built cafe racer, hopefully the seat won't be covered baby shit brown leatherette and no exhaust wrap!
Forum: Airheads 04-09-2015, 01:06 AM
Replies: 5
Views: 272
Posted By chasbmw
Some vendors such as Motorworks in the UK have...

Some vendors such as Motorworks in the UK have the wrong date for the change from 8 tooth to 9 tooth staters (09/74), I have not checked to see if this is replicated in Real OEM. My advice would be...
Forum: Airheads 04-08-2015, 01:11 AM
Replies: 37
Views: 2,246
Posted By chasbmw
The building is a better place without SS. ...

The building is a better place without SS.

Soft is good, if it is properly controlled by the damping. Riding a bike with seriously hard springs or a serious stiction problem is very dangerous as...
Forum: Airheads 04-07-2015, 01:49 PM
Replies: 13
Views: 428
Posted By chasbmw
If you are using a liner, just ensure that the...

If you are using a liner, just ensure that the material used is GTeed for use with Ethanol based fuels.

Many people have come to grief when their liner disintegrates when in contact with Ethanol.
Forum: Airheads 04-07-2015, 12:37 PM
Replies: 37
Views: 2,246
Posted By chasbmw
Just some added information. This winter I...

Just some added information.

This winter I took the forks to Maxtons in the UK, who gutted them and fitted modern fork internals. The forks feel very compliant, but I have not yet completed the...
Forum: Airheads 03-31-2015, 06:26 AM
Replies: 18
Views: 755
Posted By chasbmw
No, the bike is running the SR 1070 kit including...

No, the bike is running the SR 1070 kit including the SR assyemtrical cam. Jim cray built it and as part of the build balanced the engine and ported the heads. It also has a proper 40mm exhaust with...
Forum: Airheads 03-31-2015, 01:04 AM
Replies: 18
Views: 755
Posted By chasbmw
A dual plugged bmw will start easier and will be...

A dual plugged bmw will start easier and will be smoother, it probably can be jetted a bit leaner, especially if the jetting has been set a bit rich to dampen down pinging.

The main advantage of...
Forum: Airheads 03-30-2015, 02:56 PM
Replies: 18
Views: 755
Posted By chasbmw
Finishing at 28 degrees should be the important...

Finishing at 28 degrees should be the important bit.

Try the 2 alternative curves, see which one feels better.

I did a couple of back to back dyno runs at 26 and 28 degrees, the run at 28...
Forum: Airheads 03-29-2015, 10:54 AM
Replies: 58
Views: 1,666
Posted By chasbmw
I very much doubt it, very different bikes

I very much doubt it, very different bikes
Forum: Airheads 03-29-2015, 05:32 AM
Replies: 71
Views: 6,158
Posted By chasbmw
It looks as if you have blasted off all the...

It looks as if you have blasted off all the plating from the pushrood tubes, getting them repainted without removing them will be difficult?

How will you ensure that the rest of the engine and...
Forum: Airheads 03-28-2015, 01:16 PM
Replies: 6
Views: 361
Posted By chasbmw
Finally got round to fitting the deep sump, all...

Finally got round to fitting the deep sump, all went together nicely, used some Dreibond on the hard cardboard type gasket, on filling the bike, I worked out that it increases oil capacity by 1...
Forum: Airheads 03-27-2015, 05:22 AM
Replies: 32
Views: 1,033
Posted By chasbmw
You are mixing up Nikisil with pre nikilsil! ...

You are mixing up Nikisil with pre nikilsil! Need to change the rings.....you might want to check piston and valve clearance, given that you have such a mixture of parts.

Jim cray built an...
Forum: Airheads 03-27-2015, 05:13 AM
Replies: 78
Views: 5,852
Posted By chasbmw
I agree.....does not look safe at all

I agree.....does not look safe at all
Forum: Airheads 03-27-2015, 01:10 AM
Replies: 13
Views: 737
Posted By chasbmw
That /2 looks kind of shagged..... You could...

That /2 looks kind of shagged.....

You could spend a lot of money to bring it to half decent mechanical and cosmetic condition. Check out parts prices on Vech's website.

The brakes have a...
Forum: Airheads 03-26-2015, 01:15 AM
Replies: 62
Views: 4,206
Posted By chasbmw
Good luck with it all, you will get it done. I...

Good luck with it all, you will get it done. I would take the hit on replacement rotors rather than making any changes to the caliper mounts, that result in a bike that can only run K bike rotors.
Forum: Airheads 03-26-2015, 01:04 AM
Replies: 103
Views: 6,611
Posted By chasbmw
Barry, If your gearbox fits nicely square,...

Barry,

If your gearbox fits nicely square, then it's an indication that the clutch is properly aligned.

I seem to remember that with /2s you have to run the engine and operate the clutch a few...
Forum: Airheads 03-25-2015, 01:10 PM
Replies: 6
Views: 361
Posted By chasbmw
Kit comes with an extension, bit silly if it...

Kit comes with an extension, bit silly if it didn't! If I'm following Pokies advice, then I keep the original dipstick and use the existing markings. I've measured the capacity of the oil pan and...
Forum: Airheads 03-25-2015, 04:48 AM
Replies: 6
Views: 361
Posted By chasbmw
/2 oil system.

I have bought a 2.5 litre deep oil pan for my R50.

On a more modern airhead I would split the extra capacity between extra oil and extra crankcase air.

Is this the right approach on an /2,...
Forum: Airheads 03-25-2015, 04:42 AM
Replies: 17
Views: 928
Posted By chasbmw
If you want the extra oil capacity and a 5mmthick...

If you want the extra oil capacity and a 5mmthick bash plate, many of the German vendors are selling a sump extender with a thick bash plate, has to be stronger than the typical cast bottom plates
Forum: Airheads 03-24-2015, 11:46 AM
Replies: 7
Views: 482
Posted By chasbmw
Looks a bit like the high performance friction...

Looks a bit like the high performance friction plate I bought from either Seibenrock or HPN about 5 years ago. It was a bit grabby for the first few hundred miles, but otherwise non sissies, used in...
Forum: Airheads 03-24-2015, 07:58 AM
Replies: 86
Views: 6,867
Posted By chasbmw
Original 60 year old magnetos will be a pain in...

Original 60 year old magnetos will be a pain in the arse, much simpler to replace a battery! Even rebuilt magnetos can be a PIA, it very much depends on who rebuilt it and what parts they used....
Forum: Airheads 03-24-2015, 01:49 AM
Replies: 16
Views: 689
Posted By chasbmw
The cost of fitting 4 new guides from Steve...

The cost of fitting 4 new guides from Steve Scrimeger was around 150. Used parts returned. Quick turn around.
Forum: Airheads 03-23-2015, 01:13 PM
Replies: 37
Views: 1,600
Posted By chasbmw
Are you sure that the engine is not Pinging...

Are you sure that the engine is not Pinging (pinking)? Around 2700 rpm is right in the middle of the usual zone for pinging.

Does it happen going up hills under load and in too high a gear?
...
Forum: Airheads 03-23-2015, 09:02 AM
Replies: 17
Views: 1,090
Posted By chasbmw
My twinshock 90/6 has a seat height of around...

My twinshock 90/6 has a seat height of around 830mm
Forum: Airheads 03-23-2015, 08:56 AM
Replies: 4
Views: 385
Posted By chasbmw
There are some clam shell air boxes which have...

There are some clam shell air boxes which have holes on both sides, for breather hoses to go to each carb. It's fine to only fit a single carb hose to these, but you should block off the unused hole...
Forum: Airheads 03-23-2015, 08:51 AM
Replies: 25
Views: 2,545
Posted By chasbmw
When ordering the handlebar MC specify one with a...

When ordering the handlebar MC specify one with a 13mm size. This is what will improve ATE brakes, they are also available with a twin throttle cable fittings
Forum: Airheads 03-22-2015, 11:10 AM
Replies: 74
Views: 3,447
Posted By chasbmw
The Titananim lifters are pure race Bling, and...

The Titananim lifters are pure race Bling, and very expensive bling at that, ebay will be your friend if you are patient
Forum: Airheads 03-22-2015, 09:32 AM
Replies: 74
Views: 3,447
Posted By chasbmw
I agree. Motorworks will replace or refund...

I agree.

Motorworks will replace or refund second hand parts if you return them, but it still costs postage, they are good like that.
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