SMALL - espritmodel.com SMALL - Telemetry SMALL - Radio
Reply
Thread Tools
Old Feb 06, 2002, 06:40 PM
Registered User
Florida
Joined Oct 2001
178 Posts
Source for a 5,6, or 7 to 1 Gear Box for a sp400?

I have had good results from 3.4:1, 10 700Mah NiMH, and 11X7 apc prop. I put the figures through MotoCalc and things really get good at around 5-7 to 1 with a bigger prop. The highest ratio box I can find is 4 to 1. Any suggestions?
Thanks,
Rick
rsieminski is offline Find More Posts by rsieminski
Reply With Quote
Sign up now
to remove ads between posts
Old Feb 07, 2002, 01:17 PM
Registered User
Berks, England
Joined Jun 2001
598 Posts
The highest I have seen in the shops is the Cosmotech (4.5:1). But listed in "Electric Flight Gearboxes" by Oliver Wennmacher are:
2-stage:
Conzelmann "Volksgetriebe", 5.4:1 and 4.3:1
Ludwig "CNC gearbox for 400 motors", 5.9:1 or less
Planetary:
Gross "Guppy", 6:1 or 5.29:1

I've no idea where these are available from. The author is from Germany, so I would try the mainland European distributors. The book is about 5 years old, so they might not still be around.

Stuart
stuartaw is offline Find More Posts by stuartaw
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Wanted Mounting bolts for Hacker B20 w/4:1 gear box flystoolow Aircraft - Electric - Power Systems (FS/W) 8 Aug 02, 2006 12:17 PM
3- 1.7:1 gear drives for Speed 400 by Kyosho for Ferrias JTinCT Aircraft - Electric - Airplanes (FS/W) 2 Mar 16, 2003 07:38 PM
New - Hacker B50-11s Brusless Motor with 6.7:1 gear box! comes with Precision s Joe Pierson Aircraft - Electric - Airplanes (FS/W) 0 Mar 25, 2002 08:31 PM
Need a sp400 gearbox at 5, 6, or 7 to 1? Where? rsieminski Sport Planes 0 Feb 07, 2002 04:33 PM
Source for a 5,6, or 7 to 1 Gear Box for a sp400? rsieminski Parkflyers 0 Feb 06, 2002 11:20 PM