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Date: Fri, 03 Jan 2014 14:22:15 -0500
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Subject: Re: [LML] Tempest PowerFlight Starter
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From: Paul Miller <pjdmiller@gmail.com>
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Any non geared starter will undoubtedly be superior to a geared lightweights=
 except for weight.   The reason for the starter adapter problems with the o=
riginal geared starters was the friction causing the adapter spring to stay e=
ngaged--not the speed of the starter motor itself.  The newer sky techs appe=
ar to solve this issue but they do not spin the prop as fast as my prestolit=
e boat anchor.

Looking at tempest specs I think they are positioned against the geared star=
ters with no obvious benefit from a boat anchor unit.  Any starter can be fr=
iction tested by simply measuring torque in ounce inches and comparing with a=
 target of 3-5 oz-in maximum.  The good shops who rebuild the boat anchors w=
ill get that figure for a few hundred bucks and a core which is probably a f=
ew hundred less than a new 24v tempest.  I would expect the boat anchors 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> wrote:

> Gang,
>=20
> 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 P=
owerFlight 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 24V)
> Has up to 50% lower peak inrush amperage
> The only real drawback I noted is the weight; it's significantly heavier t=
han the lightweight offerings of other manufacturers. Mr. Ward warned me, ho=
wever, that many people are reporting the lightweight starters are premature=
ly wearing their starter adapters. He attributes this to the fact they (the l=
ightweights) incorporate an internal gear which results in the starter turni=
ng some 17,000 rpms, which is higher than the starter adapter was designed f=
or.
>=20
> If anyone has any experience with the Tempest starter please share.
>=20
> Thanks,
>=20
> --Mark

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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto"><div><span></span></div><div><meta http-equ=
iv=3D"content-type" content=3D"text/html; charset=3Dutf-8"><div>Any non gear=
ed starter will undoubtedly be superior to a geared lightweights except for w=
eight. &nbsp; The reason for the starter adapter problems with the original g=
eared starters was the friction causing the adapter spring to stay engaged--=
not the speed of the starter motor itself. &nbsp;The newer sky techs appear t=
o solve this issue but they do not spin the prop as fast as my prestolite bo=
at anchor.</div><div><br></div><div>Looking at tempest specs I think they ar=
e positioned against the geared starters with no obvious benefit from a boat=
 anchor unit. &nbsp;Any starter can be friction tested by simply measuring t=
orque in ounce inches and comparing with a target of 3-5 oz-in maximum. &nbs=
p;The good shops who rebuild the boat anchors will get that figure for a few=
 hundred bucks and a core which is probably a few hundred less than a new 24=
v tempest. &nbsp;I would expect the boat anchors and tempest to both be exce=
llent units on the large continentals.</div><div><br></div><div>Paul</div><d=
iv>Friction expert, rubs people the wrong way frequently.</div><div><br>On 2=
014-01-03, at 11:11, Mark Sletten &lt;<a href=3D"mailto:mwsletten@gmail.com"=
>mwsletten@gmail.com</a>&gt; wrote:<br><br></div><blockquote type=3D"cite"><=
div><div dir=3D"ltr">Gang,<div><br></div><div>I just got off the phone with B=
ill Ward (really friendly guy who was very generous with his time) of Aerosp=
ace Components, the company that builds the PowerFlight starter for Tempest.=
 He tells me their product:</div>
<div><ul><li>Uses roller bearings instead of bushings to reduce internal fri=
ction</li><li>Is so low friction it can be turned by hand</li><li>Produced h=
igher torque than stock</li><li>Requires lower amperage while turning (20% f=
or the 12V; more for the 24V)</li>
<li>Has up to 50% lower peak inrush amperage</li></ul><div>The only real dra=
wback I noted is the weight; it's significantly heavier than the lightweight=
 offerings of other manufacturers. Mr. Ward warned me, however, that many pe=
ople are reporting the lightweight starters are prematurely wearing their st=
arter adapters. He attributes this to the fact they (the lightweights) incor=
porate an internal gear which results in the starter turning some 17,000 rpm=
s, which is higher than the starter adapter was designed for.</div>
</div><div><br></div><div>If anyone has any experience with the Tempest star=
ter please share.</div><div><br></div><div>Thanks,</div><div><br></div><div>=
--Mark</div></div>
</div></blockquote></div></body></html>=

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