Dyno Day at Red Baron (Saturday 29th)

[SuperDave]

The reason I think it's worth a go is because everyone puts down bikes that have high kms saying that they are low on power etc. Thought it might be interseting to see what my bikes power rating is as its getting along Km wise.

But in light of what Sarge said and the risk of blowing the engine it might not be worth it. Does one have to redline the bike though? I don't see the point of that as the maximum power the bike puts out is not at the redline but between 14k and 18k, that's 1.5k off my redline, so why would one want to redline it on a dyno?

[SARGE]

What are the benefits of dynoing a bike??

Educational reply please

i use the dyno to tune out the flat spots.. pull, tweek, pull, tweek some more.. etc..


RB's Dyno dont read RPM though so its not ideal.. more bling wank factor than actual useful tool.. want a true run.. use AMPS

[justsomeguy]

You get to pull your engine down and find out what happens when little bits of metal part company with other bits of metal and go for an unguided journey though your engine.

Very educational.

That's what I thought - unless you are trying to fine tune a race engine which you think will let you win a race, is there any reason to go near a dyno??

Wont a simple seat of the pants/ gut feel tell you how the bike is?? The gut feel could come from an experienced bike mechanic of course.

[justsomeguy]

i use the dyno to tune out the flat spots.. pull, tweek, pull, tweek some more.. etc..


RB's Dyno dont read RPM though so its not ideal.. more bling wank factor than actual useful tool.. want a true run.. use AMPS

Nice of you to be so candidly honest Sarge - instead of spinelessly praising Colemans

[N4CR]

Open testing day. Won't be any racing going on.

Sorry I'm meaning turn up and race day.. not race lol.

My bad. (I have never been to the track to race).

If we all goto the dyno I might just wait for another track day then.

[SARGE]

The reason I think it's worth a go is because everyone puts down bikes that have high kms saying that they are low on power etc. Thought it might be interseting to see what my bikes power rating is as its getting along Km wise.

But in light of what Sarge said and the risk of blowing the engine it might not be worth it. Does one have to redline the bike though? I don't see the point of that as the maximum power the bike puts out is not at the redline but between 14k and 18k, that's 1.5k off my redline, so why would one want to redline it on a dyno?

even at 80% of redline, the higher km bikes will strain hard. ( valves / cams are worn.. timing chain, etc.. if you float a valve on a hi rpm run and it impacts the piston..or snap a retainer and drop a valve into the chamber, or if your timing chain gives up and the valve/ piston interfaces..turns your baby into a doorstop for a few months..

if its been 20000 km since your last valve adjustment.. i wouldnt go for it personally

the idea of a dyno is to graph your bike's output over its rev range.. cant do a 1/2 pull and get results that mean alot.. if you tell the operator to " only take it to 9000" .. he's gonna refuse to do the pull or ignore you completely and give it death.

[SARGE]

Nice of you to be so candidly honest Sarge - instead of spinelessly praising Colemans

i wont be spineless when i pull yours out and hang it on my coatrack you little Monkey-lookin motherfucker

[SuperDave]

Thanks for explaining it a bit more Sarge, it makes more sense now. So I'm correct in understanding that its the bike sitting on or very close to the redline for about 30 secs that fucks it up, not just coming to the redline? The reason I ask this is that I've ridden the bike pretty hard taking it close to the redline in 1st, 2nd, 3rd and 4th but it never sat at the redline for too long. I think I'm gonna give this dyno thing a miss, rather spend the money on a trackday at Puke!

[SARGE]

These sorts of things are a great spectator sport. Then ride of happily on your un dynoed bike while the others phone there mates for a lift home.

previous Dyno Days there .. they made you sign a waiver.. not responsible if your engine shits itself.. we launch your bike through the concrete wall.. etc

[SARGE]

You see this is why you get a hard time sometimes JSG.. unnessaceray comment. Sarge is a good guy, and of course he will praise the place he works.. thats why he works there.

no i work there to support my habits....



food, shelter, Marlboros, lady boys and race fuel

[justsomeguy]

You see this is why you get a hard time sometimes JSG.. unnessaceray comment. Sarge is a good guy, and of course he will praise the place he works.. thats why he works there.

Go back to sleep SM - your constant sleep deprivation is clouding your judgement.

Sarge praises whoever does the best job he is honest and objective- he never gives praise where it's not worth unlike the traditional salespeople (bunch of wankers they all are - yeah used to be in sales myself)

[justsomeguy]

i wont be spineless when i pull yours out and hang it on my coatrack you little Monkey-lookin motherfucker

So you saying you need my spine to not be spineless?? So you're now spineless then?? Hmm - told you to ease it on those Malboroughs........


tubby bitch

[N4CR]

even at 80% of redline, the higher km bikes will strain hard. ( valves / cams are worn.. timing chain, etc.. if you float a valve on a hi rpm run and it impacts the piston..or snap a retainer and drop a valve into the chamber, or if your timing chain gives up and the valve/ piston interfaces..turns your baby into a doorstop for a few months..

if its been 20000 km since your last valve adjustment.. i wouldnt go for it personally

the idea of a dyno is to graph your bike's output over its rev range.. cant do a 1/2 pull and get results that mean alot.. if you tell the operator to " only take it to 9000" .. he's gonna refuse to do the pull or ignore you completely and give it death.

Hmm... so sitting at max speed and just shy of redline on my bike for a long time in 5th gear (eg off the clock loving) is quite similar to a dyno run then? I have had my valve clearances done about 4000kms ago so they have pretty much bedded in or whatever it is called.

'Wonders if it will blow up'.....

[SARGE]

Thanks for explaining it a bit more Sarge, it makes more sense now. So I'm correct in understanding that its the bike sitting on or very close to the redline for about 30 secs that fucks it up, not just coming to the redline? The reason I ask this is that I've ridden the bike pretty hard taking it close to the redline in 1st, 2nd, 3rd and 4th but it never sat at the redline for too long. I think I'm gonna give this dyno thing a miss, rather spend the money on a trackday at Puke!

i take my FJ to redline once in awhile.. of course thats only 10,000 but its quite impressive at that RPM.. that dont hurt them ( much) but i am pedantic with maintenance, my engine is balanced and blueprinted.. lightweight valves and HD retainers. a redline for more than a few seconds on a bike without that kind of attention (esp with some km's on th clock) is more likely to shit its valvetrain.

im gonna go with Alloy short-throw con-rods and forged long skirt pistons next time the old girl gets pulled down.. next summer prolly.. then ill REALLY get some revs


she's still a slow old garbage scow though ....

[SARGE]

So you saying you need my spine to not be spineless?? So you're now spineless then?? Hmm - told you to ease it on those Malboroughs........


tubby bitch

looks like theres some Indian on the menu this week

get in me belly!!