9 out of 23!!!!

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Discussion

BertBert

Original Poster:

19,539 posts

217 months

Friday 29th April 2011
quotequote all
I downloaded the SR3s Life data today to see if it helps diagnose the horrid paddleshift problem I've got.

Since the engine was refreshed last year, it has run for 23 hours and of that 9 are under load. So that's a ratio of about 1.5:1. (14:9) Can that be right?

At a guess, track driving will have 80% under load and 20% not?

It means that for a test plus race day, I'd spend approx 1 hour driving on race day and perhaps 2 (max) on the test day. So 3 hours total, of which 20% is not under load so 36 mins. So say 2.5 hours under load. With the ratio about that'd be 3.75 hours running not under load.

Summit's not right.

Any ideas?

Bert

dsl2

1,475 posts

207 months

Saturday 30th April 2011
quotequote all
All running time counts, including all the ticking over in the pits to achieve warm up!

That ratio is more or less identical to mine on my 1340cc when it decided it didn't want to power my car any longer at Pembrey.


Woollyback

18 posts

177 months

Saturday 30th April 2011
quotequote all
Same for me, one of the reasons mine is going.

BertBert

Original Poster:

19,539 posts

217 months

Saturday 30th April 2011
quotequote all
Well I have no cause for concern with the engine, Just surprised that the hours are clocking up so quickly (and the remaining hours to 30 reducing so quickly).

Isn't it Climatological-discrimination? Those rads that race in the middle east (for example) don't need to spend anywhere near as many hours running to warm up so they get lots more track driving time for their 30 hours?

Bert

jpivey

572 posts

224 months

Saturday 30th April 2011
quotequote all
Maybe a pre heating system would be a good idea, Paul Steel had one fitted on his SR3. Help warm that five gallon dry sump tank full of oil up ( is there any need for such a big tank) my wet sump prosport and PR6 never had any oil issues!! Ok a 1500 may have oil problems.

BertBert

Original Poster:

19,539 posts

217 months

Saturday 30th April 2011
quotequote all
Is a pre-heating system the same as lighting a small wood fire underneath it JP? biggrin

splitpin

2,740 posts

204 months

Saturday 30th April 2011
quotequote all
yikes Hopefully there was an element of fisherman's 'it was this big' in the description of five gallons?

If not, Silkolene's two biggest customers are (or rather were) Rad, closely followed by Decko?

mbm5

219 posts

169 months

Sunday 1st May 2011
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Does the RPE warranty not specify RACING hours rather than RUNNING hours?

Woollyback

18 posts

177 months

Sunday 1st May 2011
quotequote all
mbm5 said:
Does the RPE warranty not specify RACING hours rather than RUNNING hours?
No definitely does not, you try taking an engine with a problem at 29 hours on it and claiming on the warranty.

dsl2

1,475 posts

207 months

Sunday 1st May 2011
quotequote all
Read my post Martin, its running hours which is from the moment the buggers is started up!

Got to say I didn't know that myself until my 1340 blew last year, but to be fair to them they checked the data, pronounced that it was not my fault & set to swapping the motor at the circuit under warranty. I was back in business for four wins the following day, with just a pro-rata charge based on the used hours of a regular 40 hr rebuild fee to pay.

BertBert

Original Poster:

19,539 posts

217 months

Sunday 1st May 2011
quotequote all
40 hours? Alright for some!!

BertBert

Original Poster:

19,539 posts

217 months

Sunday 1st May 2011
quotequote all
I have added up the time spent on track since I got the car with a 0 hour engine. With the proportions of under load to not under load, I reckon that a test day plus race day is 5.25 run hours. That means that ones (30 hour) warranty runs out during the 6th race day. Eeek, that's 3/4 of a club cup season!
Bert

mbm5

219 posts

169 months

Sunday 1st May 2011
quotequote all
An oil pree-heating system sounds like a solid investment !

Although it does seem like a bit of a swizz to warrant aan engine to tick over for 20 hours and race for 10, RPE are the only engine builder I ever heard of who provide a warranty on anything used in racing. Just got to thnk that its a 10 hour racing warranty..there that feels better doesn't it...?

Martin

Woollyback

18 posts

177 months

Sunday 1st May 2011
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At what percentage throttle is on load

BertBert

Original Poster:

19,539 posts

217 months

Sunday 1st May 2011
quotequote all
Thanks Martin, that feels much better!

Load is 25% throttle. In my dodgy maths, I estimated that the throttle will be at less than 25% for 15% of a race.

Bert

BertBert

Original Poster:

19,539 posts

217 months

Friday 27th May 2011
quotequote all
Just to report back, I downloaded again this week and Oulton (test day and race day) took just under 5 hours running time. So by my calculation, after the trackday this week my engine will expire in the 4th minute of qualifying next weekend at Brands!

Bert
PS only joking, it'll get to the 7th minute easily!

mbm5

219 posts

169 months

Saturday 28th May 2011
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My oil preheating system arrived. irrespective of the effective lenghtening of engine warranty it will also be nice knowing the oil is at 60 degrees when I start the engine.
Will report back on how it goes!

BertBert

Original Poster:

19,539 posts

217 months

Saturday 28th May 2011
quotequote all
Excellent Martin, which one and size did you go for?

jpivey

572 posts

224 months

Saturday 28th May 2011
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More details please Martin, sounds interesting.

BertBert

Original Poster:

19,539 posts

217 months

Saturday 28th May 2011
quotequote all
Something like this...
http://www.padheaters.com/
Bert