OILHEAD [ R1100S BASED ] CAFE RACER.

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OILHEAD [ R1100S BASED ] CAFE RACER.

Postby beachcomber550 » Thu Jul 16, 2015 12:20 pm

yes I know George - finish one thing at a time !!!

HOWEVER, I was involved in this project right from the beginning as a "what if" when we ended up with a couple of R1100S donors for the stalled [ but not abandoned! ] Scorpio Y Trike project.

So the "Valkyrie" [ in house name ] project seemed to have a life of it's own - and simply "happened" ! :-"

The styling was to be along the lines of a 60's [ styling cues ] Cafe Racer with a modern twist.

Along the way we've developed a number of GRP replacement parts that will fit all Oilhead models [ belly pans, BCR valve covers, mudguards, huggers ] and in addition we've looked at some of the chassis design issues.

As we've naturally developed a range of RAMSHOX for the Oilheads, we took on board what peeps were saying about "sharpening" the steering, seat height, etc. All familiar Kay territory.

The instant fix was to fit the shorter GS paralever strut. That development has resulted in an adjustabe Paralever [ RAMSTRUT ] which allows the steering to be sharpened via raising the rear - or lowering GS' so that shorthouses like me can reach the ground ! Why adjustable and not fixed GS length ? Well, it allows for fine tuning - or to set the ride for touring / scratching with an instant 3 minute adjustment.

The other intriguing mod we came across was the shortening of the Telelever pivot mount by 10mm [ and alternates ]. This has the effect of sharpening the steering and according to those with the necessary experience - "transforming" the bike. It has the same effect of raising the rear [ via the strut ].

That's now been developed and jigs made for exchange. Not satisfied with that - we thought, why not adjustable ? So that's the current project.

The bike .....?

We're probably 2 months away from launch, but essentially we have a 60's influenced tank [ cover ] and seat and stripped away as much of the squitter as possible to clean the yokes, sides, etc.

We've developed a special side upswept exhaust ending in a GP style silencer [ all stainless ] and we are having a special chip developed to go along with the Y Pipe cat replacement unit.

It WILL be a Marmite jobbie !!!! :wink:
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Re: OILHEAD [ R1100S BASED ] CAFE RACER.

Postby george baker » Fri Jul 17, 2015 9:25 am

Hi
tempting pictures.

I have not done anything about my project, in fact not even been near the K this year

BUT I have taken the R to Spain, Borders, and Orkney :bounce:

Stuff getting in the way of life ATM ](*,)

George
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Re: OILHEAD [ R1100S BASED ] CAFE RACER.

Postby beachcomber550 » Thu Jul 23, 2015 6:10 pm

Wheels built and tyres fitted [ using the large tie wrap method - brilliant ], and discs etc all fitted up ready for prelim assembly.

Then it's the wiring - OMG. Fortunately our new mechanic is an ace with electrics.

We're getting the final quotes in now for the Y Piece cat replacement. Along with that we're getting final specs for the new complimenting chip.

The tank and seat patternmaking / moulds also completed so hopefully - paint in a week or two. We have made a separate upholstery base that when upholstered will simply bolt on to the new seat so we won't risk damaging the paint !
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Re: OILHEAD [ R1100S BASED ] CAFE RACER.

Postby chasbmw » Tue Aug 04, 2015 3:40 pm

What's the tank made out of and what is the capacity?
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Re: OILHEAD [ R1100S BASED ] CAFE RACER.

Postby beachcomber550 » Wed Aug 05, 2015 11:03 am

Hi Chas - the "Tank" is actually a GRP cover :wink: for the new alloy fuel reservoir - 20 litres.

The new tank has all the original squitter fitted and has a screw on fuel cap, which is accessed via the "dummy" Monza cap on the "tank". The res has given us several advantages - free hand with "tank" styling, lower CoG and slimmer with fuel contained within the centre mass of the bike.

All the electrical gizmos are now situated in the area immediately behind [ under seat / side panel ] and amazingly required no alteration to the wiring ! Gel battery living in the seat hump.

The Adjustable Paralever was developed to enable riders to sharpen the steering input - the idea's been around for a while with peeps substituting the shorter GS paralever to achieve the same results.
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Re: OILHEAD [ R1100S BASED ] CAFE RACER.

Postby chasbmw » Wed Aug 05, 2015 11:54 am

That's a great solution, simple to make aware tank and cover with shapely pice of fibreglass.

I have an early Commando - don't like fibreglass tanks
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Re: OILHEAD [ R1100S BASED ] CAFE RACER.

Postby beachcomber550 » Thu Aug 06, 2015 10:12 am

That's a great solution, simple to make aware tank and cover with shapely pice of fibreglass.

I have an early Commando - don't like fibreglass tanks
I used the same solution [ tank cover ] some years ago for my TR1 sixties style Cafe Racer.

I grew up with GRP tanks in the early 60's and can honestly say I never had any problems. However, with the advent of ethynol in our fuel, I looked for a long term solution. Same deal, a tank reservoir with a "tank" cover - virtually any shape you want ! :wink:

I particularly wanted an AJS 7R / Matchless G50 style tank to go with the other 60's styling cues [ 7R seat, wire spoked alloy rimmed wheels, Grimeca 4LS front hub / brake, etc.,etc ] so I had to make my own up !

We also came up with a similar idea for a Yamaha Virago Cafe Racer we're working on [ tank res + cover ] - so it was a well trodden path for us in this instance.

The development mule is in the final stages now and we hope to get the bodywork off for paint in the next 2-3 weeks.

Our latest donor is an immaculate [ !! ] R1100S - that makes 3 in total as we have three separate "themed" finishes we are aiming for.
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Re: OILHEAD [ R1100S BASED ] CAFE RACER.

Postby chasbmw » Thu Aug 06, 2015 12:11 pm

The commando that I've got suffered from the dreaded fibreglass rot and no one makes reasonably priced / Quality steel tanks in a Fastback format, so it's taking your chances with an Indian tank.

Back in the day I had a big red fibreglass tank on an A10, it worked well enough then, but would not like to have had a big Off with it fitted.

It that a 2 sided TLS brake?
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Re: OILHEAD [ R1100S BASED ] CAFE RACER.

Postby beachcomber550 » Thu Aug 06, 2015 5:17 pm

yes it's a Grimeca 4LS [ double sided ] hub / brake.

I was lucky, I got one of the last two to be imported before they went bust ! My pal had the other.

Ridiculous price [ £750 :shock: ], but I did a deal for it with my pal just cost me my time and expertise - barter system !
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Re: OILHEAD [ R1100S BASED ] CAFE RACER.

Postby beachcomber550 » Sat Sep 05, 2015 3:54 pm

Well here it is - the results of 6 months graft - the RAM-MOTO "Scream" Cafe Racer.

Seen here in POC format - final styling changes and styling detailing to be finalised, but essentially there.

No doubt a "Marmite" jobbie, but we've got thick skins. :-"

We used it primarilly as a platform to develop and prove out all the various RAM products to go alongside the RAMSHOX range - RAMSTRUT [ adj paralever strut ], Power Plug Leads, GRP components, Y PIpe, Tuning Chip........... but it IS fun to ride ! :twisted:

Based on R1100S donors [ we have 3 now ] we went back to our 60's roots for the retro styling inspiration. The other 2 will be the same essential bodywork and fittings, but with a distinctly different styling theme - The "Stealth" and the "B-C-R" [ Boxer Cafe Racer ]. No prizes for guessing what they'll look like !

Now then, let's hope there's some Summer sun left ! \:D/

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OILHEAD [ R1100S BASED ] CAFE RACER.

Postby Galactic Greyhound » Sat Sep 05, 2015 4:53 pm

Looks good TJ!

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Re: OILHEAD [ R1100S BASED ] CAFE RACER.

Postby george baker » Sat Sep 05, 2015 5:39 pm

Hi
a bit sporty for me, but nicely done

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Re: OILHEAD [ R1100S BASED ] CAFE RACER.

Postby keiththeoutfitter1 » Sat Sep 05, 2015 7:26 pm

Very nice!
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OILHEAD [ R1100S BASED ] CAFE RACER.

Postby Ruralman » Sat Sep 05, 2015 7:50 pm

Nice looking bike :grin:

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Re: OILHEAD [ R1100S BASED ] CAFE RACER.

Postby beachcomber550 » Sat Sep 05, 2015 9:17 pm

Why thank you kindly gents, much appreciated. =D>

Hey George, just imagine it with a chair and Vincent straights ! I am :wink:
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Re: OILHEAD [ R1100S BASED ] CAFE RACER.

Postby beachcomber550 » Fri Oct 09, 2015 10:17 pm

The project has now been productionised along with all the specialised parts - GRP, Y Pipe, FRI tuning chip, Adjustable Paralever, etc.,etc. - so time to look at what 's next ?

That'll be a turbo then :twisted:

We also want to future proof the idea, so the next project will be based on the R1200 series - here's a little donor we collected today.

Radical bodywork, more user friendly bars and riding position oh yes, and that turbo ...................

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Re: OILHEAD [ R1100S BASED ] CAFE RACER.

Postby beachcomber550 » Sat Nov 07, 2015 11:22 am

It now appears that might be "two turbos" !!! Due to the unavailability of a suitable unit [ to date ] we are now looking at using two smaller units. Those have been sourced with the correct AR ratios, etc. and a compact enough to be packaged without the need of a small top box !

We are being aided in this development by Dobeck Performance [ US ] who are already providing RAM with ECU's as stock fitting for R1100S [ and others ]. Having road tested teh new unit on an otherwise stock bike - we can say that the claims are well justified as the unit smooths out the aggravating low speed antics of the bike, and helps fill out that mid range hole.

They will develop a specific chip to go with the Turbo unit.

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Re: OILHEAD [ R1100S BASED ] CAFE RACER.

Postby george baker » Sat Nov 07, 2015 12:46 pm

Hi
is that one turbo per side?

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Re: OILHEAD [ R1100S BASED ] CAFE RACER.

Postby beachcomber550 » Sun Nov 08, 2015 1:01 pm

Exactly so George ! Initially my plan was for a single turbo unit under the gearbox - worked from many angles including exhaust / intercooler plumbing. However we are having difficuly in obtaining a turbo with the correct characteristics AND small enough. So I then looked at "why not two ?". There IS a suitable turbo unit with the correct characteristics and small enough to work packaging wise.

Here we have two considerations - one is to start with a clean sheet of paper [ "Stealth" - the new project ] to suit the project with it's radical styling - and second - to make the turbo available to retro-fit otherwise stock configuration bikes.

When we really started to look into Oilheads, we were distressesd at how much you would have to spend for a relatively small BHP gain [ 20 - 30bhp ]. No such prooblem with turbos, 50bhp+ easily and safely available.
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Re: OILHEAD [ R1100S BASED ] CAFE RACER.

Postby chasbmw » Wed Nov 11, 2015 12:01 am

Won't it be a bigger to synchronise the cylinders with 2 separate turbos?

Won't the turbos exaggerate any differences in the output of each cylinder?

Just asking
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Re: OILHEAD [ R1100S BASED ] CAFE RACER.

Postby beachcomber550 » Wed Nov 11, 2015 11:30 am

Won't it be a bigger to synchronise the cylinders with 2 separate turbos?

Won't the turbos exaggerate any differences in the output of each cylinder?

Just asking
In a word, no and no :wink: . The two turbos will feed into a single Intercooler thus evening out any minor pulses / surges - then they go their separate ways into the injectors . As it's a blow through system the injectors will still be able to be individually adjusted / synchronised. Whether normally aspirated or forced induction - the two cylinders should be as equal as possible anyway. Using two turbos will also help to eliminate any turbo lag.

Electronics will be important, as will monitoring the various outputs.

It's obviously not a case of just slapping on a couple of turbos! Otherwise it would be a common mod.

We're currently working with Dobeck Performance for the elctronics package and with a turbo manufacturer to get a ball park spec'd unit to get the ball rolling - lot's still to do. [-o<
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Re: OILHEAD [ R1100S BASED ] CAFE RACER.

Postby beachcomber550 » Sat Dec 12, 2015 4:06 pm

The RAM-MOTO Scream will be at the Kickback show at Stamford Bridge Chelsea this weekend [ 12/13th ] Unfortunately I'm on family health watch [ Father in LAw [ this ekend and can't attend. Pop over and speak to our man Ben.

Incidentally - the complete bike weighs 185kgs [ wet ] as opposed to the stock weight of 225kgs.
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Re: OILHEAD [ R1100S BASED ] CAFE RACER.

Postby george baker » Sun Dec 13, 2015 12:59 pm

Hi
good to hear it has got to the stage where you are prepared to show it in public

George
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Re: OILHEAD [ R1100S BASED ] CAFE RACER.

Postby alexxx » Tue Oct 15, 2019 4:39 pm

Great to see more "modern" BMW's made naked and customised.
I hate all the massive bulk and always so high up, good work like this shows the wonderful simplicity that was lost.

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Re: OILHEAD [ R1100S BASED ] CAFE RACER.

Postby beachcomber550 » Sun Oct 20, 2019 9:41 pm

Something seems to have gone amiss with the Photophuckit images - they are rubbish those peeps.

I'll try to send via someone else.
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