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Search: Posts Made By: Prutser
Forum: Airheads Today, 10:49 AM
Replies: 29
Views: 1,089
Posted By Prutser
Pokie is right that it might be a good idea to...

Pokie is right that it might be a good idea to machine the cylinder base.
Once when I ran into this same problem without a lathe or other tools to machine the cylinder. At that time I used a marker...
Forum: Airheads Today, 12:07 AM
Replies: 29
Views: 1,089
Posted By Prutser
You might have an old type crank case and new...

You might have an old type crank case and new cylinders. Than the big O-ring doesn't fit.
You could machine the crank case by hand to make the cylinders fit like they should.
If you check the...
Forum: Airheads Yesterday, 12:29 PM
Replies: 205
Views: 22,931
Posted By Prutser
it's structure powder coated. Great stuff... Our...

it's structure powder coated. Great stuff... Our local powder coater doesn't even ask me any more what color I want when I bring stuff to them :rofl
Forum: Airheads 09-13-2014, 12:23 PM
Replies: 205
Views: 22,931
Posted By Prutser
New Dash

When I changed my speedo from a Motogadget mini to a Motoscope Pro more than a year ago I tried to fit the bigger Pro on the dash I had made when I build the bike. This was a bit tight but it worked....
Forum: Airheads 09-13-2014, 11:24 AM
Replies: 1,579
Views: 150,195
Posted By Prutser
:clap:clap:clap Finally....... time to get...

:clap:clap:clap

Finally....... time to get my "AIRHEAD RALLY TEAM" support T-shirt out of the closet again :rofl
Forum: Airheads 09-12-2014, 01:33 PM
Replies: 26
Views: 1,008
Posted By Prutser
These pictures might help to show what I mean...

These pictures might help to show what I mean with tire offset.

The bike is an R80GS with a 50mm extended mono lever. Extended with a bolt on kit.
The wheel is a modified R100GS hub machined to...
Forum: Airheads 09-10-2014, 03:10 PM
Replies: 205
Views: 22,931
Posted By Prutser
Nothing going on...

Don't have time to change things on my ST at the moment although I need to change the tires for a week off-road in the Italian Alps at the end of the month.:clap

When I come back I'm planning to...
Forum: Airheads 09-10-2014, 02:59 PM
Replies: 26
Views: 969
Posted By Prutser
G/S and Basic seat

First picture is a G/S seat next to a R100GS basic fender and rear frame.

https://lh3.googleusercontent.com/-MEPVfHi3RiE/VBDDT5GJh3I/AAAAAAAACGs/DhkTGXyi72g/w1161-h871-no/IMG_6141.JPG

^^^^ the...
Forum: Airheads 09-07-2014, 11:13 PM
Replies: 26
Views: 969
Posted By Prutser
The shape of the G/S and the basic seats are the...

The shape of the G/S and the basic seats are the same but the baseplate isn't. The rubbers that support the seat on the frame's are not in the same place because the cross tube on the basic and GS...
Forum: Airheads 09-07-2014, 09:45 AM
Replies: 26
Views: 969
Posted By Prutser
Phil in this thread there is some info about the...

Phil in this thread there is some info about the seat and rear frame difference.
http://www.advrider.com/forums/showthread.php?t=923901
Forum: Airheads 09-06-2014, 12:53 PM
Replies: 26
Views: 1,008
Posted By Prutser
About 210mm if you have a good shaft and...

About 210mm if you have a good shaft and swing-arm combo. But my R65GS will not be able to make more than 195mm before the shaft starts to rub against the swing arm.
Forum: Ride reports 09-06-2014, 12:05 PM
Replies: 158
Views: 47,749
Posted By Prutser
Thnx for the report. Enjoyed it a lot.

Thnx for the report. Enjoyed it a lot.
Forum: Airheads 09-06-2014, 10:34 AM
Replies: 26
Views: 1,008
Posted By Prutser
I have done a few of those extensions and if...

I have done a few of those extensions and if would have to build my self a new bike I would NOT use the longer swing arm again. If you would like to have extreme amounts of wheel travel you would...
Forum: Airheads 09-05-2014, 11:19 PM
Replies: 26
Views: 969
Posted By Prutser
With more wheel travel the tire can hit the seat...

With more wheel travel the tire can hit the seat lock on a stock G/S frame. The para lever being 5 cm longer might start to eat parts of the seat and the person sitting it :lol3

Next week I could...
Forum: Airheads 09-05-2014, 01:34 PM
Replies: 26
Views: 1,008
Posted By Prutser
The bolt on kit moves the final drive backwards...

The bolt on kit moves the final drive backwards by using a spacer between the swing arm and final drive.
(if thats the kit you are talking about??:rofl) Gletter makes a set like that.
...
Forum: Airheads 09-05-2014, 11:16 AM
Replies: 26
Views: 1,008
Posted By Prutser
I.M.O its way better to save a bit more money for...

I.M.O its way better to save a bit more money for the "by welding" extended swingarm.
The bolt on kit has to much things that make it hard to get everything perfect.

Things like tire clearance,...
Forum: Airheads 09-01-2014, 01:12 PM
Replies: 27
Views: 995
Posted By Prutser
The edge of my uni filter was to soft. The rubber...

The edge of my uni filter was to soft. The rubber was so flexible that it was sucked into the air box.

For the rest I think they work fine...most of the time :D

I did find a way to seal the...
Forum: Airheads 09-01-2014, 11:37 AM
Replies: 27
Views: 995
Posted By Prutser
I had one on my bike for 15k. The biggest...

I had one on my bike for 15k.
The biggest problem was that it leaked between the air box and the filter it self. I found a lot of dirt in the air box even with the filter proper oiled.

If you...
Forum: Airheads 09-01-2014, 02:32 AM
Replies: 211
Views: 19,169
Posted By Prutser
I tried those knurled aluminum balls. They don't...

I tried those knurled aluminum balls. They don't work for those mirrors. You still need to tighten the clamps way to hard and the mirrors won't stay in place. The knurled surface balls might help to...
Forum: Airheads 08-30-2014, 08:59 AM
Replies: 211
Views: 19,169
Posted By Prutser
The one she uses comes from Motogadget. It's on...

The one she uses comes from Motogadget. It's on their website but I found them on the web for a bit less.

http://motogadget.com/en/accessories/push-buttons.html
Forum: Airheads 08-27-2014, 03:30 AM
Replies: 48
Views: 2,457
Posted By Prutser
That depended on how long the owner would wait...

That depended on how long the owner would wait before they came to the workshop to have it repaired.
Some needed the welding others didn't.
Most of the time the frame tabs were bend.
I don't have...
Forum: Airheads 08-26-2014, 11:22 PM
Replies: 48
Views: 2,457
Posted By Prutser
Could be that someone used the bushings from the...

Could be that someone used the bushings from the reinforcement kit BMW used to sell for those bikes.
They had a kit with longer bushings including a plate that needed to be welded on the outside of...
Forum: Airheads 08-26-2014, 10:14 AM
Replies: 867
Views: 175,103
Posted By Prutser
Great bikes you have. But what's up with the...

Great bikes you have.

But what's up with the luggage rack above the headlight ?
Forum: Airheads 08-25-2014, 12:38 PM
Replies: 900
Views: 51,454
Posted By Prutser
We started at the outside of the pistons and took...

We started at the outside of the pistons and took off as little as possible.. Just to get the squish right.

After we done this mod on an R80G/S last week the bike pulled wheelies in 1,2 and 3rd...
Forum: Airheads 08-25-2014, 11:43 AM
Replies: 900
Views: 51,454
Posted By Prutser
You are right they vary a LOT !! ...

You are right they vary a LOT !!



Don't know. This wasn't my bike.



The Siebenrock and BMW pistons do not have the same shape.
When I checked the squish on my bike it was squishing the...
Forum: Airheads 08-25-2014, 12:54 AM
Replies: 900
Views: 51,454
Posted By Prutser
This is what a those piston can look like. It's a...

This is what a those piston can look like. It's a single plugged bike. Which was pinging pretty badly.
...
Forum: Airheads 08-23-2014, 02:25 PM
Replies: 211
Views: 19,169
Posted By Prutser
You have to machine the axle castings. Machining...

You have to machine the axle castings. Machining the tubes is not an option because above the existing thread on the sliders they get thinner so you can't make new thread there.

It's quite a risk...
Forum: Airheads 08-21-2014, 01:11 PM
Replies: 211
Views: 19,169
Posted By Prutser
280mm I didn't shorten them for my ST.

280mm

I didn't shorten them for my ST.
Forum: Airheads 08-21-2014, 10:27 AM
Replies: 45
Views: 1,639
Posted By Prutser
Sorry I forgot it was an 18"....

Sorry I forgot it was an 18"....
Forum: Airheads 08-20-2014, 11:12 PM
Replies: 68
Views: 2,446
Posted By Prutser
There are some improvements on those boots. There...

There are some improvements on those boots. There is a groove in them which fits perfect over the edge of a paralever swing. Plus the hose clamp fits into a groove in the boot so the clamp won't...
Forum: Airheads 08-20-2014, 10:50 PM
Replies: 45
Views: 1,639
Posted By Prutser
Isn't that the dangerous front wheel? The one...

Isn't that the dangerous front wheel? The one from which the center can breake out !!!:cry
Forum: Airheads 08-20-2014, 03:26 PM
Replies: 33
Views: 1,351
Posted By Prutser
On what bikes did you use them Rob ? They...

On what bikes did you use them Rob ?

They fit much better on the para levers ( thats what they are designed for) but they were too loose on the mono swing imo.
The swingarm side was really loose...
Forum: Airheads 08-20-2014, 02:45 PM
Replies: 1,811
Views: 648,275
Posted By Prutser
Here's another one....

Got this one from Walter C. who got the picture from Lyndon Poskitt.

https://lh5.googleusercontent.com/-pSlPfyp-oxs/U_UVS5jo7-I/AAAAAAAACEA/SoT7yPuEOcQ/s960/IMG_0800.JPG
Forum: Airheads 08-19-2014, 04:15 AM
Replies: 13
Views: 906
Posted By Prutser
The subframe is lifted indeed. Its mounted above...

The subframe is lifted indeed. Its mounted above the main frame so the seat fitted better against the RT tank.
He uses a custom build shock. The problem with the shock lengths for the mono's is...
Forum: Airheads 08-18-2014, 09:34 AM
Replies: 13
Views: 906
Posted By Prutser
He didn't even have to do all that. I guess he...

He didn't even have to do all that. I guess he was just lucky with the shaft and swing arm combo.

Lots of bikes I measured didn't even have enough room for the amount of travel as shown in the...
Forum: Airheads 08-18-2014, 01:43 AM
Replies: 13
Views: 906
Posted By Prutser
This is what a friend of mine did to a R80RT. He...

This is what a friend of mine did to a R80RT. He really likes the bike. He used a shortened drz fork and the stock swing arm.
He did weld a new tube above the swing arm pivot point to give it a bit...
Forum: Airheads 08-16-2014, 11:27 PM
Replies: 28
Views: 1,316
Posted By Prutser
Be carefull with taking them out. I have seen...

Be carefull with taking them out. I have seen that going wrong many times (with the stainless ones).
Hitting the stainless tubes will make them deform easily. Because aluminium and stainless is such...
Forum: Airheads 08-16-2014, 12:08 PM
Replies: 28
Views: 1,316
Posted By Prutser
I had them fall out of the cylinder without...

I had them fall out of the cylinder without touching them on a set of cylinders I ordered with the tubes in them.The tubes Od was 0,1 mm smaller than the holes in the cylinders.
Most others I...
Forum: Airheads 08-14-2014, 11:06 PM
Replies: 211
Views: 19,169
Posted By Prutser
She even had her T-shirt on backwards for more...

She even had her T-shirt on backwards for more protection :lol3
Forum: Airheads 08-14-2014, 02:52 PM
Replies: 19
Views: 792
Posted By Prutser
I drilled one in the center of the oil filter...

I drilled one in the center of the oil filter cover. I used the m10x1 sensor sold by motogadget.
They also sell the sensor that would fit your sump plug.
...
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