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Date: Fri, 03 Jan 2014 19:13:24 -0500
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From: Kevin Stallard <kevin@arilabs.net>
Subject: RE: [LML] Re: Tempest PowerFlight Starter
Thread-Topic: [LML] Re: Tempest PowerFlight Starter
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I like my boat anchor as well.  It's heavy, but so far it hasn't given me a=
ny issues... 80 hrs and climbing :)

Kevin

________________________________________
From: Lancair Mailing List [lml@lancaironline.net] On Behalf Of Paul Miller=
 [pjdmiller@gmail.com]
Sent: Friday, January 03, 2014 12:22 PM
To: lml@lancaironline.net
Subject: [LML] Re: Tempest PowerFlight Starter

Any non geared starter will undoubtedly be superior to a geared lightweight=
s except for weight.   The reason for the starter adapter problems with the=
 original geared starters was the friction causing the adapter spring to st=
ay engaged--not the speed of the starter motor itself.  The newer sky techs=
 appear to solve this issue but they do not spin the prop as fast as my pre=
stolite boat anchor.

Looking at tempest specs I think they are positioned against the geared sta=
rters with no obvious benefit from a boat anchor unit.  Any starter can be =
friction tested by simply measuring torque in ounce inches and comparing wi=
th a target of 3-5 oz-in maximum.  The good shops who rebuild the boat anch=
ors will get that figure for a few hundred bucks and a core which is probab=
ly a few hundred less than a new 24v tempest.  I would expect the boat anch=
ors and tempest to both be excellent units on the large continentals.

Paul
Friction expert, rubs people the wrong way frequently.

On 2014-01-03, at 11:11, Mark Sletten <mwsletten@gmail.com<mailto:mwsletten=
@gmail.com>> wrote:

Gang,

I just got off the phone with Bill Ward (really friendly guy who was very g=
enerous with his time) of Aerospace Components, the company that builds the=
 PowerFlight starter for Tempest. He tells me their product:

 *   Uses roller bearings instead of bushings to reduce internal friction
 *   Is so low friction it can be turned by hand
 *   Produced higher torque than stock
 *   Requires lower amperage while turning (20% for the 12V; more for the 2=
4V)
 *   Has up to 50% lower peak inrush amperage

The only real drawback I noted is the weight; it's significantly heavier th=
an the lightweight offerings of other manufacturers. Mr. Ward warned me, ho=
wever, that many people are reporting the lightweight starters are prematur=
ely wearing their starter adapters. He attributes this to the fact they (th=
e lightweights) incorporate an internal gear which results in the starter t=
urning some 17,000 rpms, which is higher than the starter adapter was desig=
ned for.

If anyone has any experience with the Tempest starter please share.

Thanks,

--Mark