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Tempest Spark Plugs

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bhoppe2

Joined: 09 Apr 2015
Posts: 15
Location: Nolensville, TN

Posted: Wed Aug 16, 2017 7:26 pm Post subject: Tempest Spark Plugs

I pulled my Champion spark plugs today with about 100 hours on them.  Every one of them was bad with unmeasurably high resistance.  Ordered Tempest today.  Several friends with much more experience than me recommended Tempest over Champion.  I am sending the bad spark plugs back to Champion through BPE tomorrow.  Let's see what they say.



Bruce Hoppe



Sent from my iPad



 	  Quote: 	
		   On Aug 16, 2017, at 10:02 PM, kearney <kearney(at)shaw.ca> wrote:

 

 

 

 Hi

 

 I am wondering if anyone has used the Tempest Massive spark [lugs in their -10. I will likely be replacing my Champions in a few months and am wondering if Tempests are a good choice. My hanger mate has a set of 8 unused massive plugs that I could use (along with another 4).

 

 Any comments appreciated.

 

 Cheers

 

 Les

 

 C-GCWZ - Flyings

 C-GROK - Some assembly required

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=471920#471920

_________________
Bruce Hoppe

Kelly McMullen

Joined: 16 Apr 2008
Posts: 1188
Location: Sun Lakes AZ

Posted: Thu Aug 17, 2017 6:21 am Post subject: Tempest Spark Plugs

Did you get your rough running and fuel pressure issues resolved? Did

AFP have suggestions?



The fine wires are good if you don't mind more than double the money

up front, and hoping you don't drop one, break the electrode trying to

adjust gap, or any other malady arise during your run to TBO with fine

wires.

Currently $80 times 12 vs $28 times 12.



On Wed, Aug 16, 2017 at 8:25 PM, Phillip Perry <philperry9(at)gmail.com> wrote:

 	  Quote: 	
		   Those Tempest fire wires are the cats meow.   Amazing plugs!   Smooth,

 nearly impossible to foul, and there's a good chance they'll reach TBO.



 They're expensive, but IMO they're worth every dollar (or Loonie in your

 case).



 Phil

_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor
KCHD

philperry9

Joined: 23 Nov 2011
Posts: 381

Posted: Thu Aug 17, 2017 10:33 am Post subject: Tempest Spark Plugs

The difference is daylight and dark between the two.    No gapping necessary.    Buy, drop in, and fly for years.   They're every bit as smooth as my electronic ignition and the drop off (assuming I'm leaned correctly) is about 140 rpm.    Really awesome plugs.   I'll never buy another massive electrode plug again.  

I got the plane back together yesterday and flew it for 1.1.   Its back to running like a top, but fuel pressures are still fluctuating just at a higher psi.  

I'm going to try a few more things forward of the firewall.  Once I get it nailed down a bit more I'll send an update.  But don't have all the answers yet to provided anything definitive.   Just working through theories forward of the f/w right now. 

Phil

Sent from my iPhone

 	  Quote: 	
		   On Aug 17, 2017, at 9:21 AM, Kelly McMullen <apilot2(at)gmail.com> wrote:

 Did you get your rough running and fuel pressure issues resolved? Did

 AFP have suggestions?

 The fine wires are good if you don't mind more than double the money

 up front, and hoping you don't drop one, break the electrode trying to

 adjust gap, or any other malady arise during your run to TBO with fine

 wires.

 Currently $80 times 12 vs $28 times 12.

> On Wed, Aug 16, 2017 at 8:25 PM, Phillip Perry <philperry9(at)gmail.com> wrote:

> Those Tempest fire wires are the cats meow.   Amazing plugs!   Smooth,

> nearly impossible to foul, and there's a good chance they'll reach TBO.

> 

> They're expensive, but IMO they're worth every dollar (or Loonie in your

> case).

> 

> Phil

Tim Olson

Joined: 25 Jan 2007
Posts: 2878

Posted: Thu Aug 17, 2017 10:56 am Post subject: Tempest Spark Plugs

I'd second that.

I've had my current fine wire plugs for I think around 1000 hours or so,

and I've never had to re-gap them once.  They don't foul, and run

real well.  I am careful not to drop plugs, but if you drop

any plug you shouldn't use it ever again, so I'd have to be careful

with the massives too. They're just cheaper.  I have liked them

so much in my RV-10 that when I got a brand new IO-390 for the

RV-14 that came with massive electrode plugs, I pulled them out

and sold them and replaced them with fine-wire before the first

engine start.  I'll also never buy a massive again.  The spark

is so much more exposed to the fuel/air charge.

Good luck, Phil, with your hunt!

Tim

On 8/17/2017 1:33 PM, Phillip Perry wrote:

 	  Quote: 	

 The difference is daylight and dark between the two.    No gapping necessary.    Buy, drop in, and fly for years.   They're every bit as smooth as my electronic ignition and the drop off (assuming I'm leaned correctly) is about 140 rpm.    Really awesome plugs.   I'll never buy another massive electrode plug again.

 I got the plane back together yesterday and flew it for 1.1.   Its back to running like a top, but fuel pressures are still fluctuating just at a higher psi.

 I'm going to try a few more things forward of the firewall.  Once I get it nailed down a bit more I'll send an update.  But don't have all the answers yet to provided anything definitive.   Just working through theories forward of the f/w right now.

 Phil

 Sent from my iPhone

> On Aug 17, 2017, at 9:21 AM, Kelly McMullen <apilot2(at)gmail.com> wrote:

>

> 

>

> Did you get your rough running and fuel pressure issues resolved? Did

> AFP have suggestions?

>

> The fine wires are good if you don't mind more than double the money

> up front, and hoping you don't drop one, break the electrode trying to

> adjust gap, or any other malady arise during your run to TBO with fine

> wires.

> Currently $80 times 12 vs $28 times 12.

>

>> On Wed, Aug 16, 2017 at 8:25 PM, Phillip Perry <philperry9(at)gmail.com> wrote:

>> Those Tempest fire wires are the cats meow.   Amazing plugs!   Smooth,

>> nearly impossible to foul, and there's a good chance they'll reach TBO.

>>

>> They're expensive, but IMO they're worth every dollar (or Loonie in your

>> case).

>>

>> Phil

Kellym

Joined: 10 Jan 2006
Posts: 1705
Location: Sun Lakes AZ

Posted: Thu Aug 17, 2017 12:41 pm Post subject: Tempest Spark Plugs

Glad you all liked fine wires so much. I have flown with Champion fine 

wires, currently have 8 of them in my -10. I have not noticed that kind 

of improvement. Have always had 80-120 rpm drop on mag checks. Granted 

the Tempest probably are better than the Champions. Usually, when I do 

the math, there isn't much difference in cost between massives that need 

replacing 3-4 times over a TBO run, and fine wires that don't need 

replacing, unless one gets damaged.



On 8/17/2017 11:55 AM, Tim Olson wrote:

 	  Quote: 	
		   

 

 I'd second that.

 I've had my current fine wire plugs for I think around 1000 hours or so,

 and I've never had to re-gap them once.  They don't foul, and run

 real well.  I am careful not to drop plugs, but if you drop

 any plug you shouldn't use it ever again, so I'd have to be careful

 with the massives too. They're just cheaper.  I have liked them

 so much in my RV-10 that when I got a brand new IO-390 for the

 RV-14 that came with massive electrode plugs, I pulled them out

 and sold them and replaced them with fine-wire before the first

 engine start.  I'll also never buy a massive again.  The spark

 is so much more exposed to the fuel/air charge.

 

 Good luck, Phil, with your hunt!

 Tim

 

 

 

 

 On 8/17/2017 1:33 PM, Phillip Perry wrote:

> 

>

> The difference is daylight and dark between the two.    No gapping 

> necessary.    Buy, drop in, and fly for years.   They're every bit as 

> smooth as my electronic ignition and the drop off (assuming I'm leaned 

> correctly) is about 140 rpm.    Really awesome plugs.   I'll never buy 

> another massive electrode plug again.

>

> I got the plane back together yesterday and flew it for 1.1.   Its 

> back to running like a top, but fuel pressures are still fluctuating 

> just at a higher psi.

>

> I'm going to try a few more things forward of the firewall.  Once I 

> get it nailed down a bit more I'll send an update.  But don't have all 

> the answers yet to provided anything definitive.   Just working 

> through theories forward of the f/w right now.

>

> Phil

>

> Sent from my iPhone

>

>> On Aug 17, 2017, at 9:21 AM, Kelly McMullen <apilot2(at)gmail.com> wrote:

>>

>> 

>>

>> Did you get your rough running and fuel pressure issues resolved? Did

>> AFP have suggestions?

>>

>> The fine wires are good if you don't mind more than double the money

>> up front, and hoping you don't drop one, break the electrode trying to

>> adjust gap, or any other malady arise during your run to TBO with fine

>> wires.

>> Currently $80 times 12 vs $28 times 12.

>>

>>

>>

>>> On Wed, Aug 16, 2017 at 8:25 PM, Phillip Perry 

>>> <philperry9(at)gmail.com> wrote:

>>> Those Tempest fire wires are the cats meow.   Amazing plugs!   Smooth,

>>> nearly impossible to foul, and there's a good chance they'll reach TBO.

>>>

>>> They're expensive, but IMO they're worth every dollar (or Loonie in 

>>> your

>>> case).

>>>

>>> Phil

>>

>>

_________________
Kelly McMullen
A&P/IA, EAA Tech Counselor # 5286
KCHD

philperry9

Joined: 23 Nov 2011
Posts: 381

Posted: Thu Aug 17, 2017 2:01 pm Post subject: Tempest Spark Plugs

I wish I had experience with the fine wires at the time I built up the engine on paper; I probably would have skipped the electronic ignition all together for the simplicity and performance of the magneto and fine wires.  

On a scale with massive electrodes on one end and electronic ignition on the other, the Tempest fine wires performance had been much closer to the performance of the electronic ignition than to the massive electrode.  I carry a massive electrode as a spare, but I'm even considering swapping the spare out for a fine wire in the go-box. 

Every time I do a mag check on my Slick, I literally smile.  Is it as good as the electronic ignition?   No.  But man is it close and it doesn't require any wiring or squeezing a $1,700 box into a well ventilated home.  

I'd be just as happy with dual fine wire mags as I am with a 1 and 1 configuration.   

Sent from my iPhone

 	  Quote: 	
		   On Aug 17, 2017, at 3:41 PM, Kelly McMullen <kellym(at)aviating.com> wrote:

 Glad you all liked fine wires so much. I have flown with Champion fine wires, currently have 8 of them in my -10. I have not noticed that kind of improvement. Have always had 80-120 rpm drop on mag checks. Granted the Tempest probably are better than the Champions. Usually, when I do the math, there isn't much difference in cost between massives that need replacing 3-4 times over a TBO run, and fine wires that don't need replacing, unless one gets damaged.

> On 8/17/2017 11:55 AM, Tim Olson wrote:

> 

> I'd second that.

> I've had my current fine wire plugs for I think around 1000 hours or so,

> and I've never had to re-gap them once.  They don't foul, and run

> real well.  I am careful not to drop plugs, but if you drop

> any plug you shouldn't use it ever again, so I'd have to be careful

> with the massives too. They're just cheaper.  I have liked them

> so much in my RV-10 that when I got a brand new IO-390 for the

> RV-14 that came with massive electrode plugs, I pulled them out

> and sold them and replaced them with fine-wire before the first

> engine start.  I'll also never buy a massive again.  The spark

> is so much more exposed to the fuel/air charge.

> Good luck, Phil, with your hunt!

> Tim

>> On 8/17/2017 1:33 PM, Phillip Perry wrote:

>> 

>> 

>> The difference is daylight and dark between the two.    No gapping necessary.    Buy, drop in, and fly for years.   They're every bit as smooth as my electronic ignition and the drop off (assuming I'm leaned correctly) is about 140 rpm.    Really awesome plugs.   I'll never buy another massive electrode plug again.

>> 

>> I got the plane back together yesterday and flew it for 1.1.   Its back to running like a top, but fuel pressures are still fluctuating just at a higher psi.

>> 

>> I'm going to try a few more things forward of the firewall.  Once I get it nailed down a bit more I'll send an update.  But don't have all the answers yet to provided anything definitive.   Just working through theories forward of the f/w right now.

>> 

>> Phil

>> 

>> 

>> 

>> 

>> 

>> Sent from my iPhone

>> 

>>> On Aug 17, 2017, at 9:21 AM, Kelly McMullen <apilot2(at)gmail.com> wrote:

>>> 

>>> 

>>> 

>>> Did you get your rough running and fuel pressure issues resolved? Did

>>> AFP have suggestions?

>>> 

>>> The fine wires are good if you don't mind more than double the money

>>> up front, and hoping you don't drop one, break the electrode trying to

>>> adjust gap, or any other malady arise during your run to TBO with fine

>>> wires.

>>> Currently $80 times 12 vs $28 times 12.

>>> 

>>> 

>>> 

>>>> On Wed, Aug 16, 2017 at 8:25 PM, Phillip Perry <philperry9(at)gmail.com> wrote:

>>>> Those Tempest fire wires are the cats meow.   Amazing plugs!   Smooth,

>>>> nearly impossible to foul, and there's a good chance they'll reach TBO.

>>>> 

>>>> They're expensive, but IMO they're worth every dollar (or Loonie in your

>>>> case).

>>>> 

>>>> Phil

>>> 

>>>

jrlark

Joined: 03 Jul 2009
Posts: 72

Posted: Fri Aug 18, 2017 8:28 am Post subject: Tempest Spark Plugs

I replaced my old style Champions as well about a month ago.  While none had really high resistance, they ranged between 1800 ohm to 2500.

Champion told me they would refurbish them if I sent them in, so I did just that.

Haven't seen them come back yet.

Rick

C-GDMH

Sent from my iPad

 	  Quote: 	
		   On Aug 16, 2017, at 11:24 PM, Bruce Hoppe <bruce.hoppe(at)yahoo.com> wrote:

 I pulled my Champion spark plugs today with about 100 hours on them.  Every one of them was bad with unmeasurably high resistance.  Ordered Tempest today.  Several friends with much more experience than me recommended Tempest over Champion.  I am sending the bad spark plugs back to Champion through BPE tomorrow.  Let's see what they say.

 Bruce Hoppe

 Sent from my iPad

> On Aug 16, 2017, at 10:02 PM, kearney <kearney(at)shaw.ca> wrote:

> 

> 

> 

> Hi

> 

> I am wondering if anyone has used the Tempest Massive spark [lugs in their -10. I will likely be replacing my Champions in a few months and am wondering if Tempests are a good choice. My hanger mate has a set of 8 unused massive plugs that I could use (along with another 4).

> 

> Any comments appreciated.

> 

> Cheers

> 

> Les

> 

> C-GCWZ - Flyings

> C-GROK - Some assembly required

> 

> 

> 

> 

> Read this topic online here:

> 

> http://forums.matronics.com/viewtopic.php?p=471920#471920

> 

> 

> 

> 

> 

> 

> 

> 

>

Mauledriver(at)nc.rr.com
Guest

Posted: Tue Aug 22, 2017 10:08 am Post subject: Tempest Spark Plugs

So we are referring to the Tempest UREM 38S fine wire (per the Service 

Instruction No. 1042AC)?



I see they are $944/12 at ACS.



Bill "  " Watson



---

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Tim Olson

Joined: 25 Jan 2007
Posts: 2878

Posted: Tue Aug 22, 2017 10:37 am Post subject: Tempest Spark Plugs

That sounds about right. But many of us only need 6. . I only use them on the bottom and use auto plugs on the top.

I think if I had dual mags I'd use them on the bottom for sure but for the top I don't know.  The bottoms foul so much easier...that's where they would do the most good.

Tim



 	  Quote: 	
		   On Aug 22, 2017, at 12:08 PM, Bill Watson <Mauledriver(at)nc.rr.com> wrote:

 

 

 

 So we are referring to the Tempest UREM 38S fine wire (per the Service Instruction No. 1042AC)?

 

 I see they are $944/12 at ACS.

 

 Bill "  " Watson

 

 ---

 This email has been checked for viruses by Avast antivirus software.

 https://www.avast.com/antivirus

Mauledriver(at)nc.rr.com
Guest

Posted: Wed Aug 23, 2017 9:19 am Post subject: Tempest Spark Plugs

Thanks Tim!

I went back and read the plug info on your site.  I'm thinking that my 

best option may be to put (6) fine wires on the bottom and stay with the 

Champions on top.  I have enough to take me through another round of 

changes.  Rotation will be a bit different so will have to think about that.

Generally speaking I've been very happy with dual mags, LOP running and 

all.  Having examined the plugs thru several cycles of rotation and a 

replacement round, I've become even more aggressive leaning on the 

ground, especially when in a conga line like the short one we had at 

Triple Tree a few days ago.  Keeping the RPMs over 1,000 at all times 

seems to help as well.  I clean and gap as required at every annual as 

well.  Having never flown with any electronic ignition, I'm very 

satisfied in my ignorance.

A note for dual mag, massive electrode owners: I was doing everything 

'on condition' up thru about 1200 hours.  Then I exchanged the mags for 

rebuilts and changed any remaining original plugs to new.  Engine ran 

noticeably smoother and probably put out more power.  I'll be doing more 

replacing and exchanging based on time going forward.

(OT) I read your 2015 Bahama trip  - our first Bahama trip in 2012 

involved the exact same itinerary!  I did my first Bonefishing while on 

Andros, always stop at Staniel for a 'burger,  and incidentally joined 

up with an AOPA group at Fernandez Bay.  We had a 2 story rental there 

that came with a resident cat(!) and a frog living in the fresh air 

toilet.   Been back several times to other islands since... Love It 

All!  Went to the Turks & Caicos and even the BVIs but there's really no 

need to go beyond the Bahamas which is by far the most accommodating to 

pilots.

Bill "always looking forward to the next out island bonefishing 

experience" Watson

On 8/22/2017 2:35 PM, Tim Olson wrote:

 	  Quote: 	

 That sounds about right. But many of us only need 6. . I only use them on the bottom and use auto plugs on the top.

 I think if I had dual mags I'd use them on the bottom for sure but for the top I don't know.  The bottoms foul so much easier...that's where they would do the most good.

 Tim

> On Aug 22, 2017, at 12:08 PM, Bill Watson <Mauledriver(at)nc.rr.com> wrote:

>

> 

>

> So we are referring to the Tempest UREM 38S fine wire (per the Service Instruction No. 1042AC)?

>

> I see they are $944/12 at ACS.

>

> Bill "  " Watson

>

> ---

> This email has been checked for viruses by Avast antivirus software.

> https://www.avast.com/antivirus

>

>

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