The Rorty R11 Stiletto II Manual

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This single-seater buggy construction manual should not be confused with the backyard type buggy plans advertised in the motoring press and elsewhere on the net. This is a proper car and uses proper components and materials.

The R11 Stiletto II single-seater, short course style buggy comes from a growing line-up of successful buggy designs used both in competition and recreational driving.

Although the R11 Stiletto II shares some of the R16's parts, the chassis is unique, with the exception of the front bumper! 

The majority of the Stiletto II's chassis is constructed from 1.5" DOM tube as opposed to 1.25" tube of some of the earlier buggies. This provides an immensely strong chassis and surprisingly, the 1.5" material is actually cheaper than 1.25" tube! The larger diameter tube will also make the Stiletto II eligible to enter a variety of race series in the US and other countries too. 

The Stiletto II boasts a mechanical gear shift paddle situated directly in front of the steering wheel which makes changing gear swift and positive. Drawings are also supplied for those wanting a more traditional shift lever. 

Custom manufactured parts have been kept to a minimum which will make it easier for those without metalworking machinery to assemble their buggy. For the diehard machinists and fabricators who would rather make everything than pay for someone else to do it, full working drawings of all the "off-the-shelf" parts are included in the manual too. 

Check here for any additions to the Suppliers List, or updates to the Parts List, drawings and specifications.

All up there are 109 technical and working drawings which will print onto US standard 11" x 17" Tabloid paper. Have a look at the two sample drawings on the right. The drawings show dual dimensions to suit everyone: The metric measurement is given priority and is followed with the decimal inch measurement in brackets.

The construction manual extends to 62 pages and contains further colour illustrations throughout the text and as usual, there are full fastener, material and parts lists all of which will print onto standard US 8.5" x 11" Letter size paper. 

Many of the parts required are available from all the usual off-road shops and auto stores. Virtually every custom part is now available for purchase from just one or two suppliers within the US, so building one of these buggies couldn't be easier.    

I have worked with Dan from RPM to come up with the best reverse box set-up available for the Shotgun. A new RPM FNR box is available for the Shotgun with an inboard brake disc and is without a doubt, the best, most reliable reverse box that money can buy.  

Not everyone wants, or needs a reverse box, so I have included drawings of the non-jackshaft cassette that I used way back in the R4. There are no big expensive bearings like the later twin-shaft cassette, just a couple of common bearings, a sprocket and a brake disc & calliper. The cassette also accepts the familiar 930 CVs, and a simple double ended adjuster takes up any slack in the drive chain. 


Purchase the R11 Stiletto II Manual now


R11 STILETTO II
SPECIFICATIONS

BRAKES
Front,
Tatum callipers with 280mm [11"] diameter discs. Rear, CNC twin piston calliper with 203.2mm [8"] diameter disc. 

CHASSIS
Spaceframe constructed from 1.5" OD DOM steel tube. 

ENGINE
Any 2, 3 or 4 cylinder, chain-drive, motorbike or snowmobile engine. 

STEERING
Aluminium rack and pinion with 1.3 turns lock to lock. 

SUSPENSION
Front, double, unequal length, tubular A-arms, with air shocks. Travel; 533mm [21"].
Rear, tubular trailing arms with air shocks. Travel; up to 508mm [20"]. 

TYRES
Front,
BF Goodrich 30X9.50R15C All Terrain.  
Rear, Goodyear Wrangler MT/R 31X10.50R15LT.

WHEELS
Front, 15" x 7.5", .190" aluminium.
Rear, 15" x 8.5", .190" aluminium. 
 

R11 STILETTO II DIMENSIONS 

GROUND CLEARANCE 339mm [13.3"].

OVERALL HEIGHT 1628mm [64"].

OVERALL LENGTH 3577mm [141"].

OVERALL WIDTH 1981mm [78"].

TRACK Nominal 1733mm [68"].

WEIGHT 480-530 kg [1060-1170 lbs] (depending on engine, wheels etc.).

WHEELBASE 2438mm [96"].

These plans have been carefully produced to enable competent fabricators and machinists to construct a superb buggy for themselves by following highly detailed and easy to read drawings. 

The R11 Stiletto II PDF manual consists of the following:

  • 171 pages of clear instructions and supporting images.

  • Fasteners list.

  • Materials list.

  • Parts list.

  • Suppliers list.

  • 109 CAD drawings.
     

Purchase the R11 Stiletto II Manual now


Be warned! The Rorty
R11 Stiletto II is not for the feint of heart. An R11 Stiletto II fitted with a large 4 cylinder bike motor can punch out over 400 BHP per tonne, and can accelerate to 100 kph (62 MPH) in under 4 seconds, with speeds approaching 200 kph (124 MPH)!

 


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MCMXCVIII - MMVIII.