Please be advised that Sandalwood Ltd will be closed from Friday April 26th to Monday May 13th for our Spring holiday, both dates inclusive.
We apologise for the inconvenience. During our break all orders in our system will be progressed as normal and dispatched when we reopen. Goods ordered on line will ge given priority when we return. We apologise for any inconvenience and look forward to supporting your requirements for Jodel and Robin spares in the future

Welcome to Sandalwood Services  THE PLACE for the continuing support for your Jodel or Robin Aircraft
the Market Place for the sale of Ex Airworld UK Stock.

We have  acquired a significant proportion of the stock following Airworld's closure in November 2016 but are also committed to maintaining a supply of Robin and Jodel parts to help the private owner and small business.
We have also retained the format of the old Airworld website to make navigation easier

Many of the items shown on this site are in stock, others may be obtained to order, and there are also some that have yet to be uploaded, so if you don't see exactly what you want please email your requirements to sales@sandalwoodservices.com.

Because Sandalwood Ltd is, and will remain, a small company we are not registered for VAT and so all the prices on this web site INCLUDE ANY VAT CONTENT. So no nasty surprises when you see the invoice.
This also means that VAT cannot be shown as a separate item on your invoice.

Payment for any item that you wish to buy will be by Bank Transfer. We will process your order and then send you payment details as when your order is ready to ship



You are here: Home > Airframe Parts and Fittings > Venturi

Vacuum Powered Instruments - The Facts

  • Venturi sizes are measured in inches
  • This refers to the amount of suction measured in inches of mercury the venturi develops at 120 mph, not to the physical dimensions
  • The faster you fly the more suction is developed
  • Venturis should be mounted in the slipstream away from disturbed air
  • If you are not sure where this is on your aeroplane, look for inspiration from similar types
  • Connect with soft plastic hose
  • Avoid constrictive bends
  • An intake filter will prolong instrument life
  • Filters will block with use and so require inspection
  • Venturi powered gyros may not be effective until some time after take-off
  • Venturi systems are not ideal for IFR flight because they can ice up
  • A suction gauge will help to monitor the health of the system, but is not mandatory for VFR flight
  • A 2" venturi will power a turn and bank indicator only
  • A 4" venturi will power one vacuum horizon or a directional gyro
  • A 9" venturi will power a horizon, a turn and bank and a directional gyro, although convention says that if you have a vacuum horizon, an electric turn co-ordinator is the usual combination