Today's Message Index:
----------------------
1. 01:48 PM - Suzuki 1300 SVS (Arthur Nation)
2. 08:53 PM - Double Belt Drive (Tedd McHenry)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> Engines-List message posted by: Arthur Nation <anation@w-link.net>
Hi,
I am looking for info on the above engine. Raven shows HP etc but no torque
curves/vs HP etc. Would appreciate any info on your installation.
Arthur
Tacoma, WA
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Double Belt Drive |
--> Engines-List message posted by: Tedd McHenry <tedd@vansairforce.org>
I've recently had an idea that's probably crazy, but I'm interested in other
people's thoughts on it. For a rotary installation, the offset that a belt
drive provides isn't required, and is actually a liability in some
installations. My idea is to use a two-stage belt drive. The first drive is
connected to the output flange of the crankshaft in the conventional manner.
But the driven pulley is on an idler shaft with another pulley that drives the
second stage. The driven pulley of the second stage is concentric with the
engine output shaft and connected to the prop flange.
Each stage provides half of the total reduction ratio, so the two drive pulleys
are the same size and the two driven pulleys are the same size.
Advantages:
The redrive output shaft is concentric with the engine crankshaft.
Tighter packaging (vertically and laterally). Each stage contributes half of
the overall reduction ratio, so the two large pulleys are smaller than the
driven pulley would be in a single-stage redrive. Also, the smaller difference
in diameter between the driving pulleys and the driven pulleys means that the
shaft spacing can be closer (i.e. smaller "center distance factor"). Overall
the reduction in the frontal area should be significant.
Disadvantages:
Cost, weight, more parts to fail, and longer.
---
Tedd McHenry
Surrey, BC
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|