Important notice
Please remember that people from all over the world read and post on this forum, and that every country has its own rules, regulations and standards. This forum is based in the USA and so much of the information posted here is for the benefit of people who operate aircraft in the experimental/exhibition or experimental/racing categories. Advice given on this forum may be region specific. A person from Europe, for example, may make suggestions perfectly appropriate for a U.S reader, although not acceptable in his home country!

Please take this into account and carefully consult the authorities, standards and approved documentation where you fly.
Fournier Forums Upload picture | User Cp  |  Register  |  Members  |  Search  |  Help
    |- Fournier Aircraft > Propellers Post New Topic   Post A Reply
Test Flying Hoffmann 145/B/80 propeller on 1400cc RF4 printer friendly version
next newest post | next oldest post
Author Messages
Bob Grimstead
Captain

Gender: Male
Location: Perth, Western Australia or West Sussex, England
Registered: Dec 2006
Status: Offline
Posts: 2027

Click here to see the profile for Bob Grimstead Visit http://www.redhawksduo.co.uk Send email to Bob Grimstead Send private message to Bob Grimstead Find more posts by Bob Grimstead Edit or delete this message Reply w/Quote
Posted Thursday, July 3, 2008 @ 11:21 AM  

9th March 2006
Temp 28°C, QNH 1010 HPa
VH-HDO 1400cc engine
Hoffmann 145/B/80 propeller, no spinner, 36 litres fuel (max weight)
Take-off rpm 2,800
Climb 500-1,500 feet 1:40 @ 60 knots and 2,850 rpm = 600 fpm
Max IAS 110 kts @ 3,600 rpm

18th February 2007
VH-HDO 1,400cc engine
Hoffmann 145/B/80 propeller, small cap spinner
30 litres fuel + 5kg baggage (max weight).
25°C, 1015, 700 feet, calm air.

2,500 rpm = 70 kt IAS (80.5 mph, 129.6 kph)
3,000 rpm = 86 kt IAS (99 mph, 159 kph)
3,500 rpm = 110 kt IAS (126.6 mph, 203.7 kph – max level speed)
4,000 rpm = 120 kt IAS in a dive
This Hoffmann 145/B/80 propeller (broader chord blades, 57in diameter by 31.5 in pitch) propeller, is actually the approved prop for a 1700cc Limbach VW conversion in the two-seat RF5.

Yours, Bob

Post New Topic   Post A Reply Jump to:
Contact Us | cfiamerica.com | Privacy Policy All times are GMT -4 Hours.
Welcome to The Fournier Forum, Guest!  
Login
Username :
Password :
In order to fully utilize the abilities of this board, you are required to register as a member. Registration is free, and allows you to do lots of things including turning on or off certain features of this board. Register now!
Forum Rules & Description
Who Can Read The Forum? Any registered user or guest
Who Can Post New Topics? Any registered user
Who Can Post Replies? Any registered user
Who Can Edit Posts? Any original author
Propellers for motorgliders
Currently Active Users: 80
There are currently 0 members and 80 guests on the boards. | Most users ever online was 822 on 08-01-2020 10:15 PM
Search This Forum
Search Keywords: Search From:
Powered by CuteCast v2.0 BETA 2
Copyright © 2001-2003 ArtsCore Studios