Today's Message Index:
----------------------
1. 02:03 PM - Re: AMPS? (jetboy)
2. 05:35 PM - Re: Re: AMPS? (Richard Girard)
3. 05:53 PM - Re: Re: AMPS? (Noel Loveys)
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 |
|
Minimum steady state cranking amps is 75 for the 912S
This is described in SB-912-042 R1
We did this test on a troublesome 912UL and got 71 amps. Although the SB does
not apply to diagnosis of faulty sprag clutch for the lower compression engine,
this indeed was the case and the engine was fixed as a result of this test.
You want the cable to take 200 amps without much sag, as someone posted, welding
cables are a good option these days, especially short links where flexibility
is important.
Ralph
--------
Ralph - CH701 / 2200a
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=315146#315146
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 |
|
Ralph et al, This is from the Rotax installation manual, page 114, 17.3.5)
Electric starter:
Wire from starter relay to the electric starter
- cross section of at least 16 mm squared (6AWG)
- output: 0.7 kW / 0.9 kW optional
page 115, 17.3.6) Starter relay
-switching current: max. 75 A (permanent)
max. 300 A (for 1 sec.)
Rick Girard
On Fri, Oct 8, 2010 at 4:01 PM, jetboy <sanson.r@xtra.co.nz> wrote:
>
> Minimum steady state cranking amps is 75 for the 912S
>
> This is described in SB-912-042 R1
>
> We did this test on a troublesome 912UL and got 71 amps. Although the SB
> does not apply to diagnosis of faulty sprag clutch for the lower compression
> engine, this indeed was the case and the engine was fixed as a result of
> this test.
>
> You want the cable to take 200 amps without much sag, as someone posted,
> welding cables are a good option these days, especially short links where
> flexibility is important.
>
> Ralph
>
> --------
> Ralph - CH701 / 2200a
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=315146#315146
>
>
--
Zulu Delta
Kolb Mk IIIC
582 Gray head
4.00 C gearbox
3 blade WD
Thanks, Homer GBYM
It is not bigotry to be certain we are right; but it is bigotry to be unable
to imagine how we might possibly have gone wrong.
- G.K. Chesterton
Message 3
| 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 |
|
According to AC43.13-1b p.11-3 the next current charted above, you always go
to the next higher draw (above 75A), is 100A the cable to be used is 4ga.
for runs up to 30 ft. That is the chart for intermittent flow. 2ga. allows
for current up to 150A., same run and for currents over 150A to 200A 1ga. is
called for. These calculations are for 20C (68F) higher temps require
larger cables.
Noel
-----Original Message-----
From: owner-rotaxengines-list-server@matronics.com
[mailto:owner-rotaxengines-list-server@matronics.com] On Behalf Of jetboy
Sent: October 8, 2010 6:31 PM
Subject: RotaxEngines-List: Re: AMPS?
Minimum steady state cranking amps is 75 for the 912S
This is described in SB-912-042 R1
We did this test on a troublesome 912UL and got 71 amps. Although the SB
does not apply to diagnosis of faulty sprag clutch for the lower compression
engine, this indeed was the case and the engine was fixed as a result of
this test.
You want the cable to take 200 amps without much sag, as someone posted,
welding cables are a good option these days, especially short links where
flexibility is important.
Ralph
--------
Ralph - CH701 / 2200a
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=315146#315146
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! --
|